/src/gdal/ogr/ogrsf_frmts/geojson/ogrgeojsonreader.cpp
Line | Count | Source |
1 | | /****************************************************************************** |
2 | | * |
3 | | * Project: OpenGIS Simple Features Reference Implementation |
4 | | * Purpose: Implementation of OGRGeoJSONReader class (OGR GeoJSON Driver). |
5 | | * Author: Mateusz Loskot, mateusz@loskot.net |
6 | | * |
7 | | ****************************************************************************** |
8 | | * Copyright (c) 2007, Mateusz Loskot |
9 | | * Copyright (c) 2008-2017, Even Rouault <even dot rouault at spatialys dot com> |
10 | | * |
11 | | * SPDX-License-Identifier: MIT |
12 | | ****************************************************************************/ |
13 | | |
14 | | #include "ogrgeojsonreader.h" |
15 | | #include "ogrgeojsonutils.h" |
16 | | #include "ogrgeojsongeometry.h" |
17 | | #include "ogr_geojson.h" |
18 | | #include "ogrlibjsonutils.h" |
19 | | #include "ogrjsoncollectionstreamingparser.h" |
20 | | #include "ogr_api.h" |
21 | | |
22 | | #include <cmath> |
23 | | #include <limits> |
24 | | #include <set> |
25 | | #include <functional> |
26 | | |
27 | | /************************************************************************/ |
28 | | /* OGRGeoJSONReaderStreamingParser */ |
29 | | /************************************************************************/ |
30 | | |
31 | | class OGRGeoJSONReaderStreamingParser final |
32 | | : public OGRJSONCollectionStreamingParser |
33 | | { |
34 | | OGRGeoJSONReader &m_oReader; |
35 | | OGRGeoJSONLayer *m_poLayer = nullptr; |
36 | | |
37 | | std::vector<OGRFeature *> m_apoFeatures{}; |
38 | | size_t m_nCurFeatureIdx = 0; |
39 | | bool m_bOriginalIdModifiedEmitted = false; |
40 | | std::set<GIntBig> m_oSetUsedFIDs{}; |
41 | | |
42 | | std::map<std::string, int> m_oMapFieldNameToIdx{}; |
43 | | std::vector<std::unique_ptr<OGRFieldDefn>> m_apoFieldDefn{}; |
44 | | gdal::DirectedAcyclicGraph<int, std::string> m_dag{}; |
45 | | |
46 | | void AnalyzeFeature(); |
47 | | |
48 | | CPL_DISALLOW_COPY_ASSIGN(OGRGeoJSONReaderStreamingParser) |
49 | | |
50 | | protected: |
51 | | void GotFeature(json_object *poObj, bool bFirstPass, |
52 | | const std::string &osJson) override; |
53 | | void TooComplex() override; |
54 | | |
55 | | public: |
56 | | OGRGeoJSONReaderStreamingParser(OGRGeoJSONReader &oReader, |
57 | | OGRGeoJSONLayer *poLayer, bool bFirstPass, |
58 | | bool bStoreNativeData); |
59 | | ~OGRGeoJSONReaderStreamingParser() override; |
60 | | |
61 | | void FinalizeLayerDefn(); |
62 | | |
63 | | OGRFeature *GetNextFeature(); |
64 | | |
65 | | inline bool GetOriginalIdModifiedEmitted() const |
66 | 0 | { |
67 | 0 | return m_bOriginalIdModifiedEmitted; |
68 | 0 | } |
69 | | |
70 | | inline void SetOriginalIdModifiedEmitted(bool b) |
71 | 0 | { |
72 | 0 | m_bOriginalIdModifiedEmitted = b; |
73 | 0 | } |
74 | | }; |
75 | | |
76 | | /************************************************************************/ |
77 | | /* OGRGeoJSONBaseReader() */ |
78 | | /************************************************************************/ |
79 | | |
80 | 0 | OGRGeoJSONBaseReader::OGRGeoJSONBaseReader() = default; |
81 | | |
82 | | /************************************************************************/ |
83 | | /* SetPreserveGeometryType */ |
84 | | /************************************************************************/ |
85 | | |
86 | | void OGRGeoJSONBaseReader::SetPreserveGeometryType(bool bPreserve) |
87 | 0 | { |
88 | 0 | bGeometryPreserve_ = bPreserve; |
89 | 0 | } |
90 | | |
91 | | /************************************************************************/ |
92 | | /* SetSkipAttributes */ |
93 | | /************************************************************************/ |
94 | | |
95 | | void OGRGeoJSONBaseReader::SetSkipAttributes(bool bSkip) |
96 | 0 | { |
97 | 0 | bAttributesSkip_ = bSkip; |
98 | 0 | } |
99 | | |
100 | | /************************************************************************/ |
101 | | /* SetFlattenNestedAttributes */ |
102 | | /************************************************************************/ |
103 | | |
104 | | void OGRGeoJSONBaseReader::SetFlattenNestedAttributes(bool bFlatten, |
105 | | char chSeparator) |
106 | 0 | { |
107 | 0 | bFlattenNestedAttributes_ = bFlatten; |
108 | 0 | chNestedAttributeSeparator_ = chSeparator; |
109 | 0 | } |
110 | | |
111 | | /************************************************************************/ |
112 | | /* SetStoreNativeData */ |
113 | | /************************************************************************/ |
114 | | |
115 | | void OGRGeoJSONBaseReader::SetStoreNativeData(bool bStoreNativeData) |
116 | 0 | { |
117 | 0 | bStoreNativeData_ = bStoreNativeData; |
118 | 0 | } |
119 | | |
120 | | /************************************************************************/ |
121 | | /* SetArrayAsString */ |
122 | | /************************************************************************/ |
123 | | |
124 | | void OGRGeoJSONBaseReader::SetArrayAsString(bool bArrayAsString) |
125 | 0 | { |
126 | 0 | bArrayAsString_ = bArrayAsString; |
127 | 0 | } |
128 | | |
129 | | /************************************************************************/ |
130 | | /* SetDateAsString */ |
131 | | /************************************************************************/ |
132 | | |
133 | | void OGRGeoJSONBaseReader::SetDateAsString(bool bDateAsString) |
134 | 0 | { |
135 | 0 | bDateAsString_ = bDateAsString; |
136 | 0 | } |
137 | | |
138 | | /************************************************************************/ |
139 | | /* OGRGeoJSONReader */ |
140 | | /************************************************************************/ |
141 | | |
142 | | OGRGeoJSONReader::OGRGeoJSONReader() |
143 | 0 | : poGJObject_(nullptr), poStreamingParser_(nullptr), bFirstSeg_(false), |
144 | 0 | bJSonPLikeWrapper_(false), fp_(nullptr), bCanEasilyAppend_(false), |
145 | 0 | bFCHasBBOX_(false), nBufferSize_(0), pabyBuffer_(nullptr), |
146 | 0 | nTotalFeatureCount_(0), nTotalOGRFeatureMemEstimate_(0) |
147 | 0 | { |
148 | 0 | } |
149 | | |
150 | | /************************************************************************/ |
151 | | /* ~OGRGeoJSONReader */ |
152 | | /************************************************************************/ |
153 | | |
154 | | OGRGeoJSONReader::~OGRGeoJSONReader() |
155 | 0 | { |
156 | 0 | if (nullptr != poGJObject_) |
157 | 0 | { |
158 | 0 | json_object_put(poGJObject_); |
159 | 0 | } |
160 | 0 | if (fp_ != nullptr) |
161 | 0 | { |
162 | 0 | VSIFCloseL(fp_); |
163 | 0 | } |
164 | 0 | delete poStreamingParser_; |
165 | 0 | CPLFree(pabyBuffer_); |
166 | |
|
167 | 0 | poGJObject_ = nullptr; |
168 | 0 | } |
169 | | |
170 | | /************************************************************************/ |
171 | | /* Parse */ |
172 | | /************************************************************************/ |
173 | | |
174 | | OGRErr OGRGeoJSONReader::Parse(const char *pszText) |
175 | 0 | { |
176 | 0 | if (nullptr != pszText) |
177 | 0 | { |
178 | | // Skip UTF-8 BOM (#5630). |
179 | 0 | const GByte *pabyData = (const GByte *)pszText; |
180 | 0 | if (pabyData[0] == 0xEF && pabyData[1] == 0xBB && pabyData[2] == 0xBF) |
181 | 0 | { |
182 | 0 | CPLDebug("GeoJSON", "Skip UTF-8 BOM"); |
183 | 0 | pszText += 3; |
184 | 0 | } |
185 | |
|
186 | 0 | if (poGJObject_ != nullptr) |
187 | 0 | { |
188 | 0 | json_object_put(poGJObject_); |
189 | 0 | poGJObject_ = nullptr; |
190 | 0 | } |
191 | | |
192 | | // JSON tree is shared for while lifetime of the reader object |
193 | | // and will be released in the destructor. |
194 | 0 | if (!OGRJSonParse(pszText, &poGJObject_)) |
195 | 0 | return OGRERR_CORRUPT_DATA; |
196 | 0 | } |
197 | | |
198 | 0 | return OGRERR_NONE; |
199 | 0 | } |
200 | | |
201 | | /************************************************************************/ |
202 | | /* ReadLayers */ |
203 | | /************************************************************************/ |
204 | | |
205 | | void OGRGeoJSONReader::ReadLayers(OGRGeoJSONDataSource *poDS) |
206 | 0 | { |
207 | 0 | if (nullptr == poGJObject_) |
208 | 0 | { |
209 | 0 | CPLDebug("GeoJSON", |
210 | 0 | "Missing parsed GeoJSON data. Forgot to call Parse()?"); |
211 | 0 | return; |
212 | 0 | } |
213 | | |
214 | 0 | ReadLayer(poDS, nullptr, poGJObject_); |
215 | 0 | } |
216 | | |
217 | | /************************************************************************/ |
218 | | /* OGRGeoJSONReaderStreamingParserGetMaxObjectSize() */ |
219 | | /************************************************************************/ |
220 | | |
221 | | static size_t OGRGeoJSONReaderStreamingParserGetMaxObjectSize() |
222 | 0 | { |
223 | 0 | const double dfTmp = |
224 | 0 | CPLAtof(CPLGetConfigOption("OGR_GEOJSON_MAX_OBJ_SIZE", "200")); |
225 | 0 | return dfTmp > 0 ? static_cast<size_t>(dfTmp * 1024 * 1024) : 0; |
226 | 0 | } |
227 | | |
228 | | /************************************************************************/ |
229 | | /* OGRGeoJSONReaderStreamingParser() */ |
230 | | /************************************************************************/ |
231 | | |
232 | | OGRGeoJSONReaderStreamingParser::OGRGeoJSONReaderStreamingParser( |
233 | | OGRGeoJSONReader &oReader, OGRGeoJSONLayer *poLayer, bool bFirstPass, |
234 | | bool bStoreNativeData) |
235 | 0 | : OGRJSONCollectionStreamingParser( |
236 | 0 | bFirstPass, bStoreNativeData, |
237 | 0 | OGRGeoJSONReaderStreamingParserGetMaxObjectSize()), |
238 | 0 | m_oReader(oReader), m_poLayer(poLayer) |
239 | 0 | { |
240 | 0 | } |
241 | | |
242 | | /************************************************************************/ |
243 | | /* ~OGRGeoJSONReaderStreamingParser() */ |
244 | | /************************************************************************/ |
245 | | |
246 | | OGRGeoJSONReaderStreamingParser::~OGRGeoJSONReaderStreamingParser() |
247 | 0 | { |
248 | 0 | for (size_t i = 0; i < m_apoFeatures.size(); i++) |
249 | 0 | delete m_apoFeatures[i]; |
250 | 0 | } |
251 | | |
252 | | /************************************************************************/ |
253 | | /* GetNextFeature() */ |
254 | | /************************************************************************/ |
255 | | |
256 | | OGRFeature *OGRGeoJSONReaderStreamingParser::GetNextFeature() |
257 | 0 | { |
258 | 0 | if (m_nCurFeatureIdx < m_apoFeatures.size()) |
259 | 0 | { |
260 | 0 | OGRFeature *poFeat = m_apoFeatures[m_nCurFeatureIdx]; |
261 | 0 | m_apoFeatures[m_nCurFeatureIdx] = nullptr; |
262 | 0 | m_nCurFeatureIdx++; |
263 | 0 | return poFeat; |
264 | 0 | } |
265 | 0 | m_nCurFeatureIdx = 0; |
266 | 0 | m_apoFeatures.clear(); |
267 | 0 | return nullptr; |
268 | 0 | } |
269 | | |
270 | | /************************************************************************/ |
271 | | /* GotFeature() */ |
272 | | /************************************************************************/ |
273 | | |
274 | | void OGRGeoJSONReaderStreamingParser::GotFeature(json_object *poObj, |
275 | | bool bFirstPass, |
276 | | const std::string &osJson) |
277 | 0 | { |
278 | 0 | if (bFirstPass) |
279 | 0 | { |
280 | 0 | if (!m_oReader.GenerateFeatureDefn(m_oMapFieldNameToIdx, m_apoFieldDefn, |
281 | 0 | m_dag, m_poLayer, poObj)) |
282 | 0 | { |
283 | 0 | } |
284 | 0 | m_poLayer->IncFeatureCount(); |
285 | 0 | } |
286 | 0 | else |
287 | 0 | { |
288 | 0 | OGRFeature *poFeat = |
289 | 0 | m_oReader.ReadFeature(m_poLayer, poObj, osJson.c_str()); |
290 | 0 | if (poFeat) |
291 | 0 | { |
292 | 0 | GIntBig nFID = poFeat->GetFID(); |
293 | 0 | if (nFID == OGRNullFID) |
294 | 0 | { |
295 | 0 | nFID = static_cast<GIntBig>(m_oSetUsedFIDs.size()); |
296 | 0 | while (cpl::contains(m_oSetUsedFIDs, nFID)) |
297 | 0 | { |
298 | 0 | ++nFID; |
299 | 0 | } |
300 | 0 | } |
301 | 0 | else if (cpl::contains(m_oSetUsedFIDs, nFID)) |
302 | 0 | { |
303 | 0 | if (!m_bOriginalIdModifiedEmitted) |
304 | 0 | { |
305 | 0 | CPLError(CE_Warning, CPLE_AppDefined, |
306 | 0 | "Several features with id = " CPL_FRMT_GIB " have " |
307 | 0 | "been found. Altering it to be unique. " |
308 | 0 | "This warning will not be emitted anymore for " |
309 | 0 | "this layer", |
310 | 0 | nFID); |
311 | 0 | m_bOriginalIdModifiedEmitted = true; |
312 | 0 | } |
313 | 0 | nFID = static_cast<GIntBig>(m_oSetUsedFIDs.size()); |
314 | 0 | while (cpl::contains(m_oSetUsedFIDs, nFID)) |
315 | 0 | { |
316 | 0 | ++nFID; |
317 | 0 | } |
318 | 0 | } |
319 | 0 | m_oSetUsedFIDs.insert(nFID); |
320 | 0 | poFeat->SetFID(nFID); |
321 | |
|
322 | 0 | m_apoFeatures.push_back(poFeat); |
323 | 0 | } |
324 | 0 | } |
325 | 0 | } |
326 | | |
327 | | /************************************************************************/ |
328 | | /* FinalizeLayerDefn() */ |
329 | | /************************************************************************/ |
330 | | |
331 | | void OGRGeoJSONReaderStreamingParser::FinalizeLayerDefn() |
332 | 0 | { |
333 | 0 | OGRFeatureDefn *poDefn = m_poLayer->GetLayerDefn(); |
334 | 0 | auto oTemporaryUnsealer(poDefn->GetTemporaryUnsealer()); |
335 | 0 | const auto sortedFields = m_dag.getTopologicalOrdering(); |
336 | 0 | CPLAssert(sortedFields.size() == m_apoFieldDefn.size()); |
337 | 0 | for (int idx : sortedFields) |
338 | 0 | { |
339 | 0 | poDefn->AddFieldDefn(m_apoFieldDefn[idx].get()); |
340 | 0 | } |
341 | 0 | m_dag = gdal::DirectedAcyclicGraph<int, std::string>(); |
342 | 0 | m_oMapFieldNameToIdx.clear(); |
343 | 0 | m_apoFieldDefn.clear(); |
344 | 0 | } |
345 | | |
346 | | /************************************************************************/ |
347 | | /* TooComplex() */ |
348 | | /************************************************************************/ |
349 | | |
350 | | void OGRGeoJSONReaderStreamingParser::TooComplex() |
351 | 0 | { |
352 | 0 | if (!ExceptionOccurred()) |
353 | 0 | EmitException("GeoJSON object too complex/large. You may define the " |
354 | 0 | "OGR_GEOJSON_MAX_OBJ_SIZE configuration option to " |
355 | 0 | "a value in megabytes to allow " |
356 | 0 | "for larger features, or 0 to remove any size limit."); |
357 | 0 | } |
358 | | |
359 | | /************************************************************************/ |
360 | | /* SetCoordinatePrecision() */ |
361 | | /************************************************************************/ |
362 | | |
363 | | static void SetCoordinatePrecision(json_object *poRootObj, |
364 | | OGRGeoJSONLayer *poLayer) |
365 | 0 | { |
366 | 0 | OGRFeatureDefn *poFeatureDefn = poLayer->GetLayerDefn(); |
367 | 0 | if (poFeatureDefn->GetGeomType() != wkbNone) |
368 | 0 | { |
369 | 0 | OGRGeoJSONWriteOptions options; |
370 | |
|
371 | 0 | json_object *poXYRes = |
372 | 0 | CPL_json_object_object_get(poRootObj, "xy_coordinate_resolution"); |
373 | 0 | if (poXYRes && (json_object_get_type(poXYRes) == json_type_double || |
374 | 0 | json_object_get_type(poXYRes) == json_type_int)) |
375 | 0 | { |
376 | 0 | auto poGeomFieldDefn = poFeatureDefn->GetGeomFieldDefn(0); |
377 | 0 | OGRGeomCoordinatePrecision oCoordPrec( |
378 | 0 | poGeomFieldDefn->GetCoordinatePrecision()); |
379 | 0 | oCoordPrec.dfXYResolution = json_object_get_double(poXYRes); |
380 | 0 | whileUnsealing(poGeomFieldDefn)->SetCoordinatePrecision(oCoordPrec); |
381 | |
|
382 | 0 | options.nXYCoordPrecision = |
383 | 0 | OGRGeomCoordinatePrecision::ResolutionToPrecision( |
384 | 0 | oCoordPrec.dfXYResolution); |
385 | 0 | } |
386 | |
|
387 | 0 | json_object *poZRes = |
388 | 0 | CPL_json_object_object_get(poRootObj, "z_coordinate_resolution"); |
389 | 0 | if (poZRes && (json_object_get_type(poZRes) == json_type_double || |
390 | 0 | json_object_get_type(poZRes) == json_type_int)) |
391 | 0 | { |
392 | 0 | auto poGeomFieldDefn = poFeatureDefn->GetGeomFieldDefn(0); |
393 | 0 | OGRGeomCoordinatePrecision oCoordPrec( |
394 | 0 | poGeomFieldDefn->GetCoordinatePrecision()); |
395 | 0 | oCoordPrec.dfZResolution = json_object_get_double(poZRes); |
396 | 0 | whileUnsealing(poGeomFieldDefn)->SetCoordinatePrecision(oCoordPrec); |
397 | |
|
398 | 0 | options.nZCoordPrecision = |
399 | 0 | OGRGeomCoordinatePrecision::ResolutionToPrecision( |
400 | 0 | oCoordPrec.dfZResolution); |
401 | 0 | } |
402 | |
|
403 | 0 | poLayer->SetWriteOptions(options); |
404 | 0 | } |
405 | 0 | } |
406 | | |
407 | | /************************************************************************/ |
408 | | /* FirstPassReadLayer() */ |
409 | | /************************************************************************/ |
410 | | |
411 | | bool OGRGeoJSONReader::FirstPassReadLayer(OGRGeoJSONDataSource *poDS, |
412 | | VSILFILE *fp, |
413 | | bool &bTryStandardReading) |
414 | 0 | { |
415 | 0 | bTryStandardReading = false; |
416 | 0 | VSIFSeekL(fp, 0, SEEK_SET); |
417 | 0 | bFirstSeg_ = true; |
418 | |
|
419 | 0 | std::string osName = poDS->GetDescription(); |
420 | 0 | if (STARTS_WITH_CI(osName.c_str(), "GeoJSON:")) |
421 | 0 | osName = osName.substr(strlen("GeoJSON:")); |
422 | 0 | osName = CPLGetBasenameSafe(osName.c_str()); |
423 | 0 | osName = OGRGeoJSONLayer::GetValidLayerName(osName.c_str()); |
424 | |
|
425 | 0 | OGRGeoJSONLayer *poLayer = |
426 | 0 | new OGRGeoJSONLayer(osName.c_str(), nullptr, |
427 | 0 | OGRGeoJSONLayer::DefaultGeometryType, poDS, this); |
428 | 0 | OGRGeoJSONReaderStreamingParser oParser(*this, poLayer, true, |
429 | 0 | bStoreNativeData_); |
430 | |
|
431 | 0 | vsi_l_offset nFileSize = 0; |
432 | 0 | if (STARTS_WITH(poDS->GetDescription(), "/vsimem/") || |
433 | 0 | !STARTS_WITH(poDS->GetDescription(), "/vsi")) |
434 | 0 | { |
435 | 0 | VSIStatBufL sStatBuf; |
436 | 0 | if (VSIStatL(poDS->GetDescription(), &sStatBuf) == 0) |
437 | 0 | { |
438 | 0 | nFileSize = sStatBuf.st_size; |
439 | 0 | } |
440 | 0 | } |
441 | |
|
442 | 0 | nBufferSize_ = 4096 * 10; |
443 | 0 | pabyBuffer_ = static_cast<GByte *>(CPLMalloc(nBufferSize_)); |
444 | 0 | int nIter = 0; |
445 | 0 | bool bThresholdReached = false; |
446 | 0 | const GIntBig nMaxBytesFirstPass = CPLAtoGIntBig( |
447 | 0 | CPLGetConfigOption("OGR_GEOJSON_MAX_BYTES_FIRST_PASS", "0")); |
448 | 0 | const GIntBig nLimitFeaturesFirstPass = CPLAtoGIntBig( |
449 | 0 | CPLGetConfigOption("OGR_GEOJSON_MAX_FEATURES_FIRST_PASS", "0")); |
450 | 0 | while (true) |
451 | 0 | { |
452 | 0 | nIter++; |
453 | |
|
454 | 0 | if (nMaxBytesFirstPass > 0 && |
455 | 0 | static_cast<GIntBig>(nIter) * static_cast<GIntBig>(nBufferSize_) >= |
456 | 0 | nMaxBytesFirstPass) |
457 | 0 | { |
458 | 0 | CPLDebug("GeoJSON", "First pass: early exit since above " |
459 | 0 | "OGR_GEOJSON_MAX_BYTES_FIRST_PASS"); |
460 | 0 | bThresholdReached = true; |
461 | 0 | break; |
462 | 0 | } |
463 | | |
464 | 0 | size_t nRead = VSIFReadL(pabyBuffer_, 1, nBufferSize_, fp); |
465 | 0 | const bool bFinished = nRead < nBufferSize_; |
466 | 0 | size_t nSkip = 0; |
467 | 0 | if (bFirstSeg_) |
468 | 0 | { |
469 | 0 | bFirstSeg_ = false; |
470 | 0 | nSkip = SkipPrologEpilogAndUpdateJSonPLikeWrapper(nRead); |
471 | 0 | } |
472 | 0 | if (bFinished && bJSonPLikeWrapper_ && nRead > nSkip) |
473 | 0 | nRead--; |
474 | 0 | if (!oParser.Parse(std::string_view(reinterpret_cast<const char *>( |
475 | 0 | pabyBuffer_ + nSkip), |
476 | 0 | nRead - nSkip), |
477 | 0 | bFinished) || |
478 | 0 | oParser.ExceptionOccurred()) |
479 | 0 | { |
480 | | // to avoid killing ourselves during layer deletion |
481 | 0 | poLayer->UnsetReader(); |
482 | 0 | delete poLayer; |
483 | 0 | return false; |
484 | 0 | } |
485 | 0 | if (bFinished || (nIter % 100) == 0) |
486 | 0 | { |
487 | 0 | if (nFileSize == 0) |
488 | 0 | { |
489 | 0 | if (bFinished) |
490 | 0 | { |
491 | 0 | CPLDebug("GeoJSON", "First pass: 100.00 %%"); |
492 | 0 | } |
493 | 0 | else |
494 | 0 | { |
495 | 0 | CPLDebug("GeoJSON", |
496 | 0 | "First pass: " CPL_FRMT_GUIB " bytes read", |
497 | 0 | static_cast<GUIntBig>(nIter) * |
498 | 0 | static_cast<GUIntBig>(nBufferSize_) + |
499 | 0 | nRead); |
500 | 0 | } |
501 | 0 | } |
502 | 0 | else |
503 | 0 | { |
504 | 0 | CPLDebug("GeoJSON", "First pass: %.2f %%", |
505 | 0 | 100.0 * VSIFTellL(fp) / nFileSize); |
506 | 0 | } |
507 | 0 | } |
508 | 0 | if (nLimitFeaturesFirstPass > 0 && |
509 | 0 | poLayer->GetFeatureCount(FALSE) >= nLimitFeaturesFirstPass) |
510 | 0 | { |
511 | 0 | CPLDebug("GeoJSON", "First pass: early exit since above " |
512 | 0 | "OGR_GEOJSON_MAX_FEATURES_FIRST_PASS"); |
513 | 0 | bThresholdReached = true; |
514 | 0 | break; |
515 | 0 | } |
516 | 0 | if (oParser.IsTypeKnown() && !oParser.IsFeatureCollection()) |
517 | 0 | break; |
518 | 0 | if (bFinished) |
519 | 0 | break; |
520 | 0 | } |
521 | | |
522 | 0 | if (bThresholdReached) |
523 | 0 | { |
524 | 0 | poLayer->InvalidateFeatureCount(); |
525 | 0 | } |
526 | 0 | else if (!oParser.IsTypeKnown() || !oParser.IsFeatureCollection()) |
527 | 0 | { |
528 | | // to avoid killing ourselves during layer deletion |
529 | 0 | poLayer->UnsetReader(); |
530 | 0 | delete poLayer; |
531 | 0 | const vsi_l_offset nRAM = |
532 | 0 | static_cast<vsi_l_offset>(CPLGetUsablePhysicalRAM()); |
533 | 0 | if (nFileSize == 0 || nRAM == 0 || nRAM > nFileSize * 20) |
534 | 0 | { |
535 | | // Only try full ingestion if we have 20x more RAM than the file |
536 | | // size |
537 | 0 | bTryStandardReading = true; |
538 | 0 | } |
539 | 0 | return false; |
540 | 0 | } |
541 | | |
542 | 0 | oParser.FinalizeLayerDefn(); |
543 | |
|
544 | 0 | CPLString osFIDColumn; |
545 | 0 | FinalizeLayerDefn(poLayer, osFIDColumn); |
546 | 0 | if (!osFIDColumn.empty()) |
547 | 0 | poLayer->SetFIDColumn(osFIDColumn); |
548 | |
|
549 | 0 | bCanEasilyAppend_ = oParser.CanEasilyAppend(); |
550 | 0 | nTotalFeatureCount_ = poLayer->GetFeatureCount(FALSE); |
551 | 0 | nTotalOGRFeatureMemEstimate_ = oParser.GetTotalOGRFeatureMemEstimate(); |
552 | |
|
553 | 0 | json_object *poRootObj = oParser.StealRootObject(); |
554 | 0 | if (poRootObj) |
555 | 0 | { |
556 | 0 | bFCHasBBOX_ = CPL_json_object_object_get(poRootObj, "bbox") != nullptr; |
557 | | |
558 | | // CPLDebug("GeoJSON", "%s", json_object_get_string(poRootObj)); |
559 | |
|
560 | 0 | json_object *poName = CPL_json_object_object_get(poRootObj, "name"); |
561 | 0 | if (poName && json_object_get_type(poName) == json_type_string) |
562 | 0 | { |
563 | 0 | const char *pszValue = json_object_get_string(poName); |
564 | 0 | whileUnsealing(poLayer->GetLayerDefn())->SetName(pszValue); |
565 | 0 | poLayer->SetDescription(pszValue); |
566 | 0 | } |
567 | |
|
568 | 0 | json_object *poDescription = |
569 | 0 | CPL_json_object_object_get(poRootObj, "description"); |
570 | 0 | if (poDescription && |
571 | 0 | json_object_get_type(poDescription) == json_type_string) |
572 | 0 | { |
573 | 0 | const char *pszValue = json_object_get_string(poDescription); |
574 | 0 | poLayer->SetMetadataItem("DESCRIPTION", pszValue); |
575 | 0 | } |
576 | |
|
577 | 0 | OGRSpatialReference *poSRS = OGRGeoJSONReadSpatialReference(poRootObj); |
578 | 0 | const auto eGeomType = poLayer->GetLayerDefn()->GetGeomType(); |
579 | 0 | if (eGeomType != wkbNone && poSRS == nullptr) |
580 | 0 | { |
581 | | // If there is none defined, we use 4326 / 4979. |
582 | 0 | poSRS = new OGRSpatialReference(); |
583 | 0 | if (OGR_GT_HasZ(eGeomType)) |
584 | 0 | poSRS->importFromEPSG(4979); |
585 | 0 | else |
586 | 0 | poSRS->SetFromUserInput(SRS_WKT_WGS84_LAT_LONG); |
587 | 0 | poSRS->SetAxisMappingStrategy(OAMS_TRADITIONAL_GIS_ORDER); |
588 | 0 | } |
589 | 0 | CPLErrorReset(); |
590 | |
|
591 | 0 | if (eGeomType != wkbNone && poSRS != nullptr) |
592 | 0 | { |
593 | 0 | auto poGeomFieldDefn = poLayer->GetLayerDefn()->GetGeomFieldDefn(0); |
594 | 0 | whileUnsealing(poGeomFieldDefn)->SetSpatialRef(poSRS); |
595 | 0 | } |
596 | 0 | if (poSRS) |
597 | 0 | poSRS->Release(); |
598 | |
|
599 | 0 | SetCoordinatePrecision(poRootObj, poLayer); |
600 | |
|
601 | 0 | if (bStoreNativeData_) |
602 | 0 | { |
603 | 0 | CPLString osNativeData("NATIVE_DATA="); |
604 | 0 | osNativeData += json_object_get_string(poRootObj); |
605 | |
|
606 | 0 | const char *const apszMetadata[] = { |
607 | 0 | osNativeData.c_str(), "NATIVE_MEDIA_TYPE=application/geo+json", |
608 | 0 | nullptr}; |
609 | |
|
610 | 0 | poLayer->SetMetadata(apszMetadata, "NATIVE_DATA"); |
611 | 0 | } |
612 | |
|
613 | 0 | poGJObject_ = poRootObj; |
614 | 0 | } |
615 | |
|
616 | 0 | fp_ = fp; |
617 | 0 | poDS->AddLayer(poLayer); |
618 | 0 | return true; |
619 | 0 | } |
620 | | |
621 | | /************************************************************************/ |
622 | | /* SkipPrologEpilogAndUpdateJSonPLikeWrapper() */ |
623 | | /************************************************************************/ |
624 | | |
625 | | size_t OGRGeoJSONReader::SkipPrologEpilogAndUpdateJSonPLikeWrapper(size_t nRead) |
626 | 0 | { |
627 | 0 | size_t nSkip = 0; |
628 | 0 | if (nRead >= 3 && pabyBuffer_[0] == 0xEF && pabyBuffer_[1] == 0xBB && |
629 | 0 | pabyBuffer_[2] == 0xBF) |
630 | 0 | { |
631 | 0 | CPLDebug("GeoJSON", "Skip UTF-8 BOM"); |
632 | 0 | nSkip += 3; |
633 | 0 | } |
634 | |
|
635 | 0 | const char *const apszPrefix[] = {"loadGeoJSON(", "jsonp("}; |
636 | 0 | for (size_t i = 0; i < CPL_ARRAYSIZE(apszPrefix); i++) |
637 | 0 | { |
638 | 0 | if (nRead >= nSkip + strlen(apszPrefix[i]) && |
639 | 0 | memcmp(pabyBuffer_ + nSkip, apszPrefix[i], strlen(apszPrefix[i])) == |
640 | 0 | 0) |
641 | 0 | { |
642 | 0 | nSkip += strlen(apszPrefix[i]); |
643 | 0 | bJSonPLikeWrapper_ = true; |
644 | 0 | break; |
645 | 0 | } |
646 | 0 | } |
647 | |
|
648 | 0 | return nSkip; |
649 | 0 | } |
650 | | |
651 | | /************************************************************************/ |
652 | | /* ResetReading() */ |
653 | | /************************************************************************/ |
654 | | |
655 | | void OGRGeoJSONReader::ResetReading() |
656 | 0 | { |
657 | 0 | CPLAssert(fp_); |
658 | 0 | if (poStreamingParser_) |
659 | 0 | bOriginalIdModifiedEmitted_ = |
660 | 0 | poStreamingParser_->GetOriginalIdModifiedEmitted(); |
661 | 0 | delete poStreamingParser_; |
662 | 0 | poStreamingParser_ = nullptr; |
663 | 0 | } |
664 | | |
665 | | /************************************************************************/ |
666 | | /* GetNextFeature() */ |
667 | | /************************************************************************/ |
668 | | |
669 | | OGRFeature *OGRGeoJSONReader::GetNextFeature(OGRGeoJSONLayer *poLayer) |
670 | 0 | { |
671 | 0 | CPLAssert(fp_); |
672 | 0 | if (poStreamingParser_ == nullptr) |
673 | 0 | { |
674 | 0 | poStreamingParser_ = new OGRGeoJSONReaderStreamingParser( |
675 | 0 | *this, poLayer, false, bStoreNativeData_); |
676 | 0 | poStreamingParser_->SetOriginalIdModifiedEmitted( |
677 | 0 | bOriginalIdModifiedEmitted_); |
678 | 0 | VSIFSeekL(fp_, 0, SEEK_SET); |
679 | 0 | bFirstSeg_ = true; |
680 | 0 | bJSonPLikeWrapper_ = false; |
681 | 0 | } |
682 | |
|
683 | 0 | OGRFeature *poFeat = poStreamingParser_->GetNextFeature(); |
684 | 0 | if (poFeat) |
685 | 0 | return poFeat; |
686 | | |
687 | 0 | while (true) |
688 | 0 | { |
689 | 0 | size_t nRead = VSIFReadL(pabyBuffer_, 1, nBufferSize_, fp_); |
690 | 0 | const bool bFinished = nRead < nBufferSize_; |
691 | 0 | size_t nSkip = 0; |
692 | 0 | if (bFirstSeg_) |
693 | 0 | { |
694 | 0 | bFirstSeg_ = false; |
695 | 0 | nSkip = SkipPrologEpilogAndUpdateJSonPLikeWrapper(nRead); |
696 | 0 | } |
697 | 0 | if (bFinished && bJSonPLikeWrapper_ && nRead > nSkip) |
698 | 0 | nRead--; |
699 | 0 | if (!poStreamingParser_->Parse( |
700 | 0 | std::string_view( |
701 | 0 | reinterpret_cast<const char *>(pabyBuffer_ + nSkip), |
702 | 0 | nRead - nSkip), |
703 | 0 | bFinished) || |
704 | 0 | poStreamingParser_->ExceptionOccurred()) |
705 | 0 | { |
706 | 0 | break; |
707 | 0 | } |
708 | | |
709 | 0 | poFeat = poStreamingParser_->GetNextFeature(); |
710 | 0 | if (poFeat) |
711 | 0 | return poFeat; |
712 | | |
713 | 0 | if (bFinished) |
714 | 0 | break; |
715 | 0 | } |
716 | | |
717 | 0 | return nullptr; |
718 | 0 | } |
719 | | |
720 | | /************************************************************************/ |
721 | | /* GetFeature() */ |
722 | | /************************************************************************/ |
723 | | |
724 | | OGRFeature *OGRGeoJSONReader::GetFeature(OGRGeoJSONLayer *poLayer, GIntBig nFID) |
725 | 0 | { |
726 | 0 | CPLAssert(fp_); |
727 | | |
728 | 0 | if (oMapFIDToOffsetSize_.empty()) |
729 | 0 | { |
730 | 0 | CPLDebug("GeoJSON", |
731 | 0 | "Establishing index to features for first GetFeature() call"); |
732 | |
|
733 | 0 | if (poStreamingParser_) |
734 | 0 | bOriginalIdModifiedEmitted_ = |
735 | 0 | poStreamingParser_->GetOriginalIdModifiedEmitted(); |
736 | 0 | delete poStreamingParser_; |
737 | 0 | poStreamingParser_ = nullptr; |
738 | |
|
739 | 0 | OGRGeoJSONReaderStreamingParser oParser(*this, poLayer, false, |
740 | 0 | bStoreNativeData_); |
741 | 0 | oParser.SetOriginalIdModifiedEmitted(bOriginalIdModifiedEmitted_); |
742 | 0 | VSIFSeekL(fp_, 0, SEEK_SET); |
743 | 0 | bFirstSeg_ = true; |
744 | 0 | bJSonPLikeWrapper_ = false; |
745 | 0 | vsi_l_offset nCurOffset = 0; |
746 | 0 | vsi_l_offset nFeatureOffset = 0; |
747 | 0 | while (true) |
748 | 0 | { |
749 | 0 | size_t nRead = VSIFReadL(pabyBuffer_, 1, nBufferSize_, fp_); |
750 | 0 | const bool bFinished = nRead < nBufferSize_; |
751 | 0 | size_t nSkip = 0; |
752 | 0 | if (bFirstSeg_) |
753 | 0 | { |
754 | 0 | bFirstSeg_ = false; |
755 | 0 | nSkip = SkipPrologEpilogAndUpdateJSonPLikeWrapper(nRead); |
756 | 0 | } |
757 | 0 | if (bFinished && bJSonPLikeWrapper_ && nRead > nSkip) |
758 | 0 | nRead--; |
759 | 0 | auto pszPtr = reinterpret_cast<const char *>(pabyBuffer_ + nSkip); |
760 | 0 | for (size_t i = 0; i < nRead - nSkip; i++) |
761 | 0 | { |
762 | 0 | oParser.ResetFeatureDetectionState(); |
763 | 0 | if (!oParser.Parse(std::string_view(pszPtr + i, 1), |
764 | 0 | bFinished && (i + 1 == nRead - nSkip)) || |
765 | 0 | oParser.ExceptionOccurred()) |
766 | 0 | { |
767 | 0 | return nullptr; |
768 | 0 | } |
769 | 0 | if (oParser.IsStartFeature()) |
770 | 0 | { |
771 | 0 | nFeatureOffset = nCurOffset + i; |
772 | 0 | } |
773 | 0 | else if (oParser.IsEndFeature()) |
774 | 0 | { |
775 | 0 | vsi_l_offset nFeatureSize = |
776 | 0 | (nCurOffset + i) - nFeatureOffset + 1; |
777 | 0 | auto poFeat = oParser.GetNextFeature(); |
778 | 0 | if (poFeat) |
779 | 0 | { |
780 | 0 | const GIntBig nThisFID = poFeat->GetFID(); |
781 | 0 | if (!cpl::contains(oMapFIDToOffsetSize_, nThisFID)) |
782 | 0 | { |
783 | 0 | oMapFIDToOffsetSize_[nThisFID] = |
784 | 0 | std::pair<vsi_l_offset, vsi_l_offset>( |
785 | 0 | nFeatureOffset, nFeatureSize); |
786 | 0 | } |
787 | 0 | delete poFeat; |
788 | 0 | } |
789 | 0 | } |
790 | 0 | } |
791 | | |
792 | 0 | if (bFinished) |
793 | 0 | break; |
794 | 0 | nCurOffset += nRead; |
795 | 0 | } |
796 | | |
797 | 0 | bOriginalIdModifiedEmitted_ = oParser.GetOriginalIdModifiedEmitted(); |
798 | 0 | } |
799 | | |
800 | 0 | const auto oIter = oMapFIDToOffsetSize_.find(nFID); |
801 | 0 | if (oIter == oMapFIDToOffsetSize_.end()) |
802 | 0 | { |
803 | 0 | return nullptr; |
804 | 0 | } |
805 | | |
806 | 0 | VSIFSeekL(fp_, oIter->second.first, SEEK_SET); |
807 | 0 | if (oIter->second.second > 1000 * 1000 * 1000) |
808 | 0 | { |
809 | 0 | return nullptr; |
810 | 0 | } |
811 | 0 | size_t nSize = static_cast<size_t>(oIter->second.second); |
812 | 0 | char *pszBuffer = static_cast<char *>(VSIMalloc(nSize + 1)); |
813 | 0 | if (!pszBuffer) |
814 | 0 | { |
815 | 0 | return nullptr; |
816 | 0 | } |
817 | 0 | if (VSIFReadL(pszBuffer, 1, nSize, fp_) != nSize) |
818 | 0 | { |
819 | 0 | VSIFree(pszBuffer); |
820 | 0 | return nullptr; |
821 | 0 | } |
822 | 0 | pszBuffer[nSize] = 0; |
823 | 0 | json_object *poObj = nullptr; |
824 | 0 | if (!OGRJSonParse(pszBuffer, &poObj)) |
825 | 0 | { |
826 | 0 | VSIFree(pszBuffer); |
827 | 0 | return nullptr; |
828 | 0 | } |
829 | | |
830 | 0 | OGRFeature *poFeat = ReadFeature(poLayer, poObj, pszBuffer); |
831 | 0 | json_object_put(poObj); |
832 | 0 | VSIFree(pszBuffer); |
833 | 0 | if (!poFeat) |
834 | 0 | { |
835 | 0 | return nullptr; |
836 | 0 | } |
837 | 0 | poFeat->SetFID(nFID); |
838 | 0 | return poFeat; |
839 | 0 | } |
840 | | |
841 | | /************************************************************************/ |
842 | | /* IngestAll() */ |
843 | | /************************************************************************/ |
844 | | |
845 | | bool OGRGeoJSONReader::IngestAll(OGRGeoJSONLayer *poLayer) |
846 | 0 | { |
847 | 0 | const vsi_l_offset nRAM = |
848 | 0 | static_cast<vsi_l_offset>(CPLGetUsablePhysicalRAM()) / 3 * 4; |
849 | 0 | if (nRAM && nTotalOGRFeatureMemEstimate_ > nRAM) |
850 | 0 | { |
851 | 0 | CPLError(CE_Failure, CPLE_OutOfMemory, |
852 | 0 | "Not enough memory to ingest all the layer: " CPL_FRMT_GUIB |
853 | 0 | " available, " CPL_FRMT_GUIB " needed", |
854 | 0 | nRAM, nTotalOGRFeatureMemEstimate_); |
855 | 0 | return false; |
856 | 0 | } |
857 | | |
858 | 0 | CPLDebug("GeoJSON", |
859 | 0 | "Total memory estimated for ingestion: " CPL_FRMT_GUIB " bytes", |
860 | 0 | nTotalOGRFeatureMemEstimate_); |
861 | |
|
862 | 0 | ResetReading(); |
863 | 0 | GIntBig nCounter = 0; |
864 | 0 | while (true) |
865 | 0 | { |
866 | 0 | auto poFeature = std::unique_ptr<OGRFeature>(GetNextFeature(poLayer)); |
867 | 0 | if (poFeature == nullptr) |
868 | 0 | break; |
869 | 0 | poLayer->AddFeature(std::move(poFeature)); |
870 | 0 | nCounter++; |
871 | 0 | if (((nCounter % 10000) == 0 || nCounter == nTotalFeatureCount_) && |
872 | 0 | nTotalFeatureCount_ > 0) |
873 | 0 | { |
874 | 0 | CPLDebug("GeoJSON", "Ingestion at %.02f %%", |
875 | 0 | 100.0 * nCounter / nTotalFeatureCount_); |
876 | 0 | } |
877 | 0 | } |
878 | 0 | return true; |
879 | 0 | } |
880 | | |
881 | | /************************************************************************/ |
882 | | /* ReadLayer */ |
883 | | /************************************************************************/ |
884 | | |
885 | | void OGRGeoJSONReader::ReadLayer(OGRGeoJSONDataSource *poDS, |
886 | | const char *pszName, json_object *poObj) |
887 | 0 | { |
888 | 0 | GeoJSONObject::Type objType = OGRGeoJSONGetType(poObj); |
889 | 0 | if (objType == GeoJSONObject::eUnknown) |
890 | 0 | { |
891 | | // Check if the object contains key:value pairs where value |
892 | | // is a standard GeoJSON object. In which case, use key as the layer |
893 | | // name. |
894 | 0 | if (json_type_object == json_object_get_type(poObj)) |
895 | 0 | { |
896 | 0 | json_object_iter it; |
897 | 0 | it.key = nullptr; |
898 | 0 | it.val = nullptr; |
899 | 0 | it.entry = nullptr; |
900 | 0 | json_object_object_foreachC(poObj, it) |
901 | 0 | { |
902 | 0 | objType = OGRGeoJSONGetType(it.val); |
903 | 0 | if (objType != GeoJSONObject::eUnknown) |
904 | 0 | ReadLayer(poDS, it.key, it.val); |
905 | 0 | } |
906 | 0 | } |
907 | | |
908 | | // CPLError(CE_Failure, CPLE_AppDefined, |
909 | | // "Unrecognized GeoJSON structure."); |
910 | |
|
911 | 0 | return; |
912 | 0 | } |
913 | | |
914 | 0 | CPLErrorReset(); |
915 | | |
916 | | // Figure out layer name |
917 | 0 | std::string osName; |
918 | 0 | if (pszName) |
919 | 0 | { |
920 | 0 | osName = pszName; |
921 | 0 | } |
922 | 0 | else |
923 | 0 | { |
924 | 0 | if (GeoJSONObject::eFeatureCollection == objType) |
925 | 0 | { |
926 | 0 | json_object *poName = CPL_json_object_object_get(poObj, "name"); |
927 | 0 | if (poName != nullptr && |
928 | 0 | json_object_get_type(poName) == json_type_string) |
929 | 0 | { |
930 | 0 | pszName = json_object_get_string(poName); |
931 | 0 | } |
932 | 0 | } |
933 | 0 | if (pszName) |
934 | 0 | { |
935 | 0 | osName = pszName; |
936 | 0 | } |
937 | 0 | else |
938 | 0 | { |
939 | 0 | const char *pszDesc = poDS->GetDescription(); |
940 | 0 | if (strchr(pszDesc, '?') == nullptr && |
941 | 0 | strchr(pszDesc, '{') == nullptr) |
942 | 0 | { |
943 | 0 | osName = CPLGetBasenameSafe(pszDesc); |
944 | 0 | } |
945 | 0 | } |
946 | 0 | } |
947 | 0 | osName = OGRGeoJSONLayer::GetValidLayerName(osName.c_str()); |
948 | |
|
949 | 0 | OGRGeoJSONLayer *poLayer = new OGRGeoJSONLayer( |
950 | 0 | osName.c_str(), nullptr, OGRGeoJSONLayer::DefaultGeometryType, poDS, |
951 | 0 | nullptr); |
952 | |
|
953 | 0 | OGRSpatialReference *poSRS = OGRGeoJSONReadSpatialReference(poObj); |
954 | 0 | bool bDefaultSRS = false; |
955 | 0 | if (poSRS == nullptr) |
956 | 0 | { |
957 | | // If there is none defined, we use 4326 / 4979. |
958 | 0 | poSRS = new OGRSpatialReference(); |
959 | 0 | bDefaultSRS = true; |
960 | 0 | } |
961 | 0 | { |
962 | 0 | auto poGeomFieldDefn = poLayer->GetLayerDefn()->GetGeomFieldDefn(0); |
963 | 0 | whileUnsealing(poGeomFieldDefn)->SetSpatialRef(poSRS); |
964 | 0 | } |
965 | |
|
966 | 0 | if (!GenerateLayerDefn(poLayer, poObj)) |
967 | 0 | { |
968 | 0 | CPLError(CE_Failure, CPLE_AppDefined, |
969 | 0 | "Layer schema generation failed."); |
970 | |
|
971 | 0 | delete poLayer; |
972 | 0 | poSRS->Release(); |
973 | 0 | return; |
974 | 0 | } |
975 | | |
976 | 0 | if (GeoJSONObject::eFeatureCollection == objType) |
977 | 0 | { |
978 | 0 | json_object *poDescription = |
979 | 0 | CPL_json_object_object_get(poObj, "description"); |
980 | 0 | if (poDescription != nullptr && |
981 | 0 | json_object_get_type(poDescription) == json_type_string) |
982 | 0 | { |
983 | 0 | poLayer->SetMetadataItem("DESCRIPTION", |
984 | 0 | json_object_get_string(poDescription)); |
985 | 0 | } |
986 | |
|
987 | 0 | SetCoordinatePrecision(poObj, poLayer); |
988 | 0 | } |
989 | | |
990 | | /* -------------------------------------------------------------------- */ |
991 | | /* Translate single geometry-only Feature object. */ |
992 | | /* -------------------------------------------------------------------- */ |
993 | |
|
994 | 0 | if (GeoJSONObject::ePoint == objType || |
995 | 0 | GeoJSONObject::eMultiPoint == objType || |
996 | 0 | GeoJSONObject::eLineString == objType || |
997 | 0 | GeoJSONObject::eMultiLineString == objType || |
998 | 0 | GeoJSONObject::ePolygon == objType || |
999 | 0 | GeoJSONObject::eMultiPolygon == objType || |
1000 | 0 | GeoJSONObject::eGeometryCollection == objType) |
1001 | 0 | { |
1002 | 0 | auto poGeometry = std::unique_ptr<OGRGeometry>( |
1003 | 0 | ReadGeometry(poObj, poLayer->GetSpatialRef())); |
1004 | 0 | if (!AddFeature(poLayer, std::move(poGeometry))) |
1005 | 0 | { |
1006 | 0 | CPLDebug("GeoJSON", "Translation of single geometry failed."); |
1007 | 0 | delete poLayer; |
1008 | 0 | poSRS->Release(); |
1009 | 0 | return; |
1010 | 0 | } |
1011 | 0 | } |
1012 | | /* -------------------------------------------------------------------- */ |
1013 | | /* Translate single but complete Feature object. */ |
1014 | | /* -------------------------------------------------------------------- */ |
1015 | 0 | else if (GeoJSONObject::eFeature == objType) |
1016 | 0 | { |
1017 | 0 | auto poFeature = |
1018 | 0 | std::unique_ptr<OGRFeature>(ReadFeature(poLayer, poObj, nullptr)); |
1019 | 0 | AddFeature(poLayer, std::move(poFeature)); |
1020 | 0 | } |
1021 | | /* -------------------------------------------------------------------- */ |
1022 | | /* Translate multi-feature FeatureCollection object. */ |
1023 | | /* -------------------------------------------------------------------- */ |
1024 | 0 | else if (GeoJSONObject::eFeatureCollection == objType) |
1025 | 0 | { |
1026 | 0 | ReadFeatureCollection(poLayer, poObj); |
1027 | |
|
1028 | 0 | if (CPLGetLastErrorType() != CE_Warning) |
1029 | 0 | CPLErrorReset(); |
1030 | 0 | } |
1031 | | |
1032 | 0 | poLayer->DetectGeometryType(); |
1033 | |
|
1034 | 0 | if (bDefaultSRS && poLayer->GetGeomType() != wkbNone) |
1035 | 0 | { |
1036 | 0 | if (OGR_GT_HasZ(poLayer->GetGeomType())) |
1037 | 0 | poSRS->importFromEPSG(4979); |
1038 | 0 | else |
1039 | 0 | poSRS->SetFromUserInput(SRS_WKT_WGS84_LAT_LONG); |
1040 | 0 | poSRS->SetAxisMappingStrategy(OAMS_TRADITIONAL_GIS_ORDER); |
1041 | 0 | } |
1042 | 0 | poSRS->Release(); |
1043 | |
|
1044 | 0 | poDS->AddLayer(poLayer); |
1045 | 0 | } |
1046 | | |
1047 | | /************************************************************************/ |
1048 | | /* GenerateLayerDefn() */ |
1049 | | /************************************************************************/ |
1050 | | |
1051 | | bool OGRGeoJSONReader::GenerateLayerDefn(OGRGeoJSONLayer *poLayer, |
1052 | | json_object *poGJObject) |
1053 | 0 | { |
1054 | 0 | CPLAssert(nullptr != poGJObject); |
1055 | 0 | CPLAssert(nullptr != poLayer->GetLayerDefn()); |
1056 | 0 | CPLAssert(0 == poLayer->GetLayerDefn()->GetFieldCount()); |
1057 | | |
1058 | 0 | if (bAttributesSkip_) |
1059 | 0 | return true; |
1060 | | |
1061 | | /* -------------------------------------------------------------------- */ |
1062 | | /* Scan all features and generate layer definition. */ |
1063 | | /* -------------------------------------------------------------------- */ |
1064 | 0 | bool bSuccess = true; |
1065 | |
|
1066 | 0 | std::map<std::string, int> oMapFieldNameToIdx; |
1067 | 0 | std::vector<std::unique_ptr<OGRFieldDefn>> apoFieldDefn; |
1068 | 0 | gdal::DirectedAcyclicGraph<int, std::string> dag; |
1069 | |
|
1070 | 0 | GeoJSONObject::Type objType = OGRGeoJSONGetType(poGJObject); |
1071 | 0 | if (GeoJSONObject::eFeature == objType) |
1072 | 0 | { |
1073 | 0 | bSuccess = GenerateFeatureDefn(oMapFieldNameToIdx, apoFieldDefn, dag, |
1074 | 0 | poLayer, poGJObject); |
1075 | 0 | } |
1076 | 0 | else if (GeoJSONObject::eFeatureCollection == objType) |
1077 | 0 | { |
1078 | 0 | json_object *poObjFeatures = |
1079 | 0 | OGRGeoJSONFindMemberByName(poGJObject, "features"); |
1080 | 0 | if (nullptr != poObjFeatures && |
1081 | 0 | json_type_array == json_object_get_type(poObjFeatures)) |
1082 | 0 | { |
1083 | 0 | const auto nFeatures = json_object_array_length(poObjFeatures); |
1084 | 0 | for (auto i = decltype(nFeatures){0}; i < nFeatures; ++i) |
1085 | 0 | { |
1086 | 0 | json_object *poObjFeature = |
1087 | 0 | json_object_array_get_idx(poObjFeatures, i); |
1088 | 0 | if (!GenerateFeatureDefn(oMapFieldNameToIdx, apoFieldDefn, dag, |
1089 | 0 | poLayer, poObjFeature)) |
1090 | 0 | { |
1091 | 0 | CPLDebug("GeoJSON", "Create feature schema failure."); |
1092 | 0 | bSuccess = false; |
1093 | 0 | } |
1094 | 0 | } |
1095 | 0 | } |
1096 | 0 | else |
1097 | 0 | { |
1098 | 0 | CPLError(CE_Failure, CPLE_AppDefined, |
1099 | 0 | "Invalid FeatureCollection object. " |
1100 | 0 | "Missing \'features\' member."); |
1101 | 0 | bSuccess = false; |
1102 | 0 | } |
1103 | 0 | } |
1104 | | |
1105 | | // Note: the current strategy will not produce stable output, depending |
1106 | | // on the order of features, if there are conflicting order / cycles. |
1107 | | // See https://github.com/OSGeo/gdal/pull/4552 for a number of potential |
1108 | | // resolutions if that has to be solved in the future. |
1109 | 0 | OGRFeatureDefn *poDefn = poLayer->GetLayerDefn(); |
1110 | 0 | const auto sortedFields = dag.getTopologicalOrdering(); |
1111 | 0 | CPLAssert(sortedFields.size() == apoFieldDefn.size()); |
1112 | 0 | { |
1113 | 0 | auto oTemporaryUnsealer(poDefn->GetTemporaryUnsealer()); |
1114 | 0 | for (int idx : sortedFields) |
1115 | 0 | { |
1116 | 0 | poDefn->AddFieldDefn(apoFieldDefn[idx].get()); |
1117 | 0 | } |
1118 | 0 | } |
1119 | |
|
1120 | 0 | CPLString osFIDColumn; |
1121 | 0 | FinalizeLayerDefn(poLayer, osFIDColumn); |
1122 | 0 | if (!osFIDColumn.empty()) |
1123 | 0 | poLayer->SetFIDColumn(osFIDColumn); |
1124 | |
|
1125 | 0 | return bSuccess; |
1126 | 0 | } |
1127 | | |
1128 | | /************************************************************************/ |
1129 | | /* FinalizeLayerDefn() */ |
1130 | | /************************************************************************/ |
1131 | | |
1132 | | void OGRGeoJSONBaseReader::FinalizeLayerDefn(OGRLayer *poLayer, |
1133 | | CPLString &osFIDColumn) |
1134 | 0 | { |
1135 | | /* -------------------------------------------------------------------- */ |
1136 | | /* Validate and add FID column if necessary. */ |
1137 | | /* -------------------------------------------------------------------- */ |
1138 | 0 | osFIDColumn.clear(); |
1139 | 0 | OGRFeatureDefn *poLayerDefn = poLayer->GetLayerDefn(); |
1140 | 0 | CPLAssert(nullptr != poLayerDefn); |
1141 | | |
1142 | 0 | whileUnsealing(poLayerDefn)->SetGeomType(m_eLayerGeomType); |
1143 | |
|
1144 | 0 | if (m_bNeedFID64) |
1145 | 0 | { |
1146 | 0 | poLayer->SetMetadataItem(OLMD_FID64, "YES"); |
1147 | 0 | } |
1148 | |
|
1149 | 0 | if (!bFeatureLevelIdAsFID_) |
1150 | 0 | { |
1151 | 0 | const int idx = poLayerDefn->GetFieldIndexCaseSensitive("id"); |
1152 | 0 | if (idx >= 0) |
1153 | 0 | { |
1154 | 0 | OGRFieldDefn *poFDefn = poLayerDefn->GetFieldDefn(idx); |
1155 | 0 | if (poFDefn->GetType() == OFTInteger || |
1156 | 0 | poFDefn->GetType() == OFTInteger64) |
1157 | 0 | { |
1158 | 0 | osFIDColumn = poLayerDefn->GetFieldDefn(idx)->GetNameRef(); |
1159 | 0 | } |
1160 | 0 | } |
1161 | 0 | } |
1162 | 0 | } |
1163 | | |
1164 | | /************************************************************************/ |
1165 | | /* OGRGeoJSONReaderAddOrUpdateField() */ |
1166 | | /************************************************************************/ |
1167 | | |
1168 | | void OGRGeoJSONReaderAddOrUpdateField( |
1169 | | std::vector<int> &retIndices, |
1170 | | std::map<std::string, int> &oMapFieldNameToIdx, |
1171 | | std::vector<std::unique_ptr<OGRFieldDefn>> &apoFieldDefn, |
1172 | | const char *pszKey, json_object *poVal, bool bFlattenNestedAttributes, |
1173 | | char chNestedAttributeSeparator, bool bArrayAsString, bool bDateAsString, |
1174 | | std::set<int> &aoSetUndeterminedTypeFields) |
1175 | 0 | { |
1176 | 0 | const auto jType = json_object_get_type(poVal); |
1177 | 0 | if (bFlattenNestedAttributes && poVal != nullptr && |
1178 | 0 | jType == json_type_object) |
1179 | 0 | { |
1180 | 0 | json_object_iter it; |
1181 | 0 | it.key = nullptr; |
1182 | 0 | it.val = nullptr; |
1183 | 0 | it.entry = nullptr; |
1184 | 0 | json_object_object_foreachC(poVal, it) |
1185 | 0 | { |
1186 | 0 | char szSeparator[2] = {chNestedAttributeSeparator, '\0'}; |
1187 | |
|
1188 | 0 | CPLString osAttrName( |
1189 | 0 | CPLSPrintf("%s%s%s", pszKey, szSeparator, it.key)); |
1190 | 0 | if (it.val != nullptr && |
1191 | 0 | json_object_get_type(it.val) == json_type_object) |
1192 | 0 | { |
1193 | 0 | OGRGeoJSONReaderAddOrUpdateField( |
1194 | 0 | retIndices, oMapFieldNameToIdx, apoFieldDefn, osAttrName, |
1195 | 0 | it.val, true, chNestedAttributeSeparator, bArrayAsString, |
1196 | 0 | bDateAsString, aoSetUndeterminedTypeFields); |
1197 | 0 | } |
1198 | 0 | else |
1199 | 0 | { |
1200 | 0 | OGRGeoJSONReaderAddOrUpdateField( |
1201 | 0 | retIndices, oMapFieldNameToIdx, apoFieldDefn, osAttrName, |
1202 | 0 | it.val, false, 0, bArrayAsString, bDateAsString, |
1203 | 0 | aoSetUndeterminedTypeFields); |
1204 | 0 | } |
1205 | 0 | } |
1206 | 0 | return; |
1207 | 0 | } |
1208 | | |
1209 | 0 | const auto oMapFieldNameToIdxIter = oMapFieldNameToIdx.find(pszKey); |
1210 | 0 | if (oMapFieldNameToIdxIter == oMapFieldNameToIdx.end()) |
1211 | 0 | { |
1212 | 0 | OGRFieldSubType eSubType; |
1213 | 0 | const OGRFieldType eType = |
1214 | 0 | GeoJSONPropertyToFieldType(poVal, eSubType, bArrayAsString); |
1215 | 0 | auto poFieldDefn = std::make_unique<OGRFieldDefn>(pszKey, eType); |
1216 | 0 | poFieldDefn->SetSubType(eSubType); |
1217 | 0 | if (eSubType == OFSTBoolean) |
1218 | 0 | poFieldDefn->SetWidth(1); |
1219 | 0 | if (poFieldDefn->GetType() == OFTString && !bDateAsString) |
1220 | 0 | { |
1221 | 0 | int nTZFlag = 0; |
1222 | 0 | poFieldDefn->SetType( |
1223 | 0 | GeoJSONStringPropertyToFieldType(poVal, nTZFlag)); |
1224 | 0 | poFieldDefn->SetTZFlag(nTZFlag); |
1225 | 0 | } |
1226 | 0 | apoFieldDefn.emplace_back(std::move(poFieldDefn)); |
1227 | 0 | const int nIndex = static_cast<int>(apoFieldDefn.size()) - 1; |
1228 | 0 | retIndices.emplace_back(nIndex); |
1229 | 0 | oMapFieldNameToIdx[pszKey] = nIndex; |
1230 | 0 | if (poVal == nullptr) |
1231 | 0 | aoSetUndeterminedTypeFields.insert(nIndex); |
1232 | 0 | } |
1233 | 0 | else if (poVal) |
1234 | 0 | { |
1235 | 0 | const int nIndex = oMapFieldNameToIdxIter->second; |
1236 | 0 | retIndices.emplace_back(nIndex); |
1237 | | // If there is a null value: do not update field definition. |
1238 | 0 | OGRFieldDefn *poFDefn = apoFieldDefn[nIndex].get(); |
1239 | 0 | const OGRFieldType eType = poFDefn->GetType(); |
1240 | 0 | const OGRFieldSubType eSubType = poFDefn->GetSubType(); |
1241 | 0 | OGRFieldSubType eNewSubType; |
1242 | 0 | OGRFieldType eNewType = |
1243 | 0 | GeoJSONPropertyToFieldType(poVal, eNewSubType, bArrayAsString); |
1244 | 0 | const bool bNewIsEmptyArray = |
1245 | 0 | (jType == json_type_array && json_object_array_length(poVal) == 0); |
1246 | 0 | if (cpl::contains(aoSetUndeterminedTypeFields, nIndex)) |
1247 | 0 | { |
1248 | 0 | poFDefn->SetSubType(OFSTNone); |
1249 | 0 | poFDefn->SetType(eNewType); |
1250 | 0 | if (poFDefn->GetType() == OFTString && !bDateAsString) |
1251 | 0 | { |
1252 | 0 | int nTZFlag = 0; |
1253 | 0 | poFDefn->SetType( |
1254 | 0 | GeoJSONStringPropertyToFieldType(poVal, nTZFlag)); |
1255 | 0 | poFDefn->SetTZFlag(nTZFlag); |
1256 | 0 | } |
1257 | 0 | poFDefn->SetSubType(eNewSubType); |
1258 | 0 | aoSetUndeterminedTypeFields.erase(nIndex); |
1259 | 0 | } |
1260 | 0 | else if (eType == OFTInteger) |
1261 | 0 | { |
1262 | 0 | if (eNewType == OFTInteger && eSubType == OFSTBoolean && |
1263 | 0 | eNewSubType != OFSTBoolean) |
1264 | 0 | { |
1265 | 0 | poFDefn->SetSubType(OFSTNone); |
1266 | 0 | } |
1267 | 0 | else if (eNewType == OFTInteger64 || eNewType == OFTReal || |
1268 | 0 | eNewType == OFTInteger64List || eNewType == OFTRealList || |
1269 | 0 | eNewType == OFTStringList) |
1270 | 0 | { |
1271 | 0 | poFDefn->SetSubType(OFSTNone); |
1272 | 0 | poFDefn->SetType(eNewType); |
1273 | 0 | } |
1274 | 0 | else if (eNewType == OFTIntegerList) |
1275 | 0 | { |
1276 | 0 | if (eSubType == OFSTBoolean && eNewSubType != OFSTBoolean) |
1277 | 0 | { |
1278 | 0 | poFDefn->SetSubType(OFSTNone); |
1279 | 0 | } |
1280 | 0 | poFDefn->SetType(eNewType); |
1281 | 0 | } |
1282 | 0 | else if (eNewType != OFTInteger) |
1283 | 0 | { |
1284 | 0 | poFDefn->SetSubType(OFSTNone); |
1285 | 0 | poFDefn->SetType(OFTString); |
1286 | 0 | poFDefn->SetSubType(OFSTJSON); |
1287 | 0 | } |
1288 | 0 | } |
1289 | 0 | else if (eType == OFTInteger64) |
1290 | 0 | { |
1291 | 0 | if (eNewType == OFTReal) |
1292 | 0 | { |
1293 | 0 | poFDefn->SetSubType(OFSTNone); |
1294 | 0 | poFDefn->SetType(eNewType); |
1295 | 0 | } |
1296 | 0 | else if (eNewType == OFTIntegerList || eNewType == OFTInteger64List) |
1297 | 0 | { |
1298 | 0 | poFDefn->SetSubType(OFSTNone); |
1299 | 0 | poFDefn->SetType(OFTInteger64List); |
1300 | 0 | } |
1301 | 0 | else if (eNewType == OFTRealList || eNewType == OFTStringList) |
1302 | 0 | { |
1303 | 0 | poFDefn->SetSubType(OFSTNone); |
1304 | 0 | poFDefn->SetType(eNewType); |
1305 | 0 | } |
1306 | 0 | else if (eNewType != OFTInteger && eNewType != OFTInteger64) |
1307 | 0 | { |
1308 | 0 | poFDefn->SetSubType(OFSTNone); |
1309 | 0 | poFDefn->SetType(OFTString); |
1310 | 0 | poFDefn->SetSubType(OFSTJSON); |
1311 | 0 | } |
1312 | 0 | } |
1313 | 0 | else if (eType == OFTReal) |
1314 | 0 | { |
1315 | 0 | if (eNewType == OFTIntegerList || eNewType == OFTInteger64List || |
1316 | 0 | eNewType == OFTRealList) |
1317 | 0 | { |
1318 | 0 | poFDefn->SetSubType(OFSTNone); |
1319 | 0 | poFDefn->SetType(OFTRealList); |
1320 | 0 | } |
1321 | 0 | else if (eNewType == OFTStringList) |
1322 | 0 | { |
1323 | 0 | poFDefn->SetSubType(OFSTNone); |
1324 | 0 | poFDefn->SetType(OFTStringList); |
1325 | 0 | } |
1326 | 0 | else if (eNewType != OFTInteger && eNewType != OFTInteger64 && |
1327 | 0 | eNewType != OFTReal) |
1328 | 0 | { |
1329 | 0 | poFDefn->SetSubType(OFSTNone); |
1330 | 0 | poFDefn->SetType(OFTString); |
1331 | 0 | poFDefn->SetSubType(OFSTJSON); |
1332 | 0 | } |
1333 | 0 | } |
1334 | 0 | else if (eType == OFTString) |
1335 | 0 | { |
1336 | 0 | if (eSubType == OFSTNone) |
1337 | 0 | { |
1338 | 0 | if (eNewType == OFTStringList) |
1339 | 0 | { |
1340 | 0 | poFDefn->SetType(OFTStringList); |
1341 | 0 | } |
1342 | 0 | else if (eNewType != OFTString) |
1343 | 0 | { |
1344 | 0 | poFDefn->SetSubType(OFSTJSON); |
1345 | 0 | } |
1346 | 0 | } |
1347 | 0 | } |
1348 | 0 | else if (eType == OFTIntegerList) |
1349 | 0 | { |
1350 | 0 | if (eNewType == OFTString) |
1351 | 0 | { |
1352 | 0 | if (!bNewIsEmptyArray) |
1353 | 0 | { |
1354 | 0 | poFDefn->SetSubType(OFSTNone); |
1355 | 0 | poFDefn->SetType(eNewType); |
1356 | 0 | poFDefn->SetSubType(OFSTJSON); |
1357 | 0 | } |
1358 | 0 | } |
1359 | 0 | else if (eNewType == OFTInteger64List || eNewType == OFTRealList || |
1360 | 0 | eNewType == OFTStringList) |
1361 | 0 | { |
1362 | 0 | poFDefn->SetSubType(OFSTNone); |
1363 | 0 | poFDefn->SetType(eNewType); |
1364 | 0 | } |
1365 | 0 | else if (eNewType == OFTInteger64) |
1366 | 0 | { |
1367 | 0 | poFDefn->SetSubType(OFSTNone); |
1368 | 0 | poFDefn->SetType(OFTInteger64List); |
1369 | 0 | } |
1370 | 0 | else if (eNewType == OFTReal) |
1371 | 0 | { |
1372 | 0 | poFDefn->SetSubType(OFSTNone); |
1373 | 0 | poFDefn->SetType(OFTRealList); |
1374 | 0 | } |
1375 | 0 | else if (eNewType == OFTInteger || eNewType == OFTIntegerList) |
1376 | 0 | { |
1377 | 0 | if (eSubType == OFSTBoolean && eNewSubType != OFSTBoolean) |
1378 | 0 | { |
1379 | 0 | poFDefn->SetSubType(OFSTNone); |
1380 | 0 | } |
1381 | 0 | } |
1382 | 0 | else |
1383 | 0 | { |
1384 | 0 | poFDefn->SetSubType(OFSTNone); |
1385 | 0 | poFDefn->SetType(OFTString); |
1386 | 0 | poFDefn->SetSubType(OFSTJSON); |
1387 | 0 | } |
1388 | 0 | } |
1389 | 0 | else if (eType == OFTInteger64List) |
1390 | 0 | { |
1391 | 0 | if (eNewType == OFTString) |
1392 | 0 | { |
1393 | 0 | if (!bNewIsEmptyArray) |
1394 | 0 | { |
1395 | 0 | poFDefn->SetSubType(OFSTNone); |
1396 | 0 | poFDefn->SetType(eNewType); |
1397 | 0 | poFDefn->SetSubType(OFSTJSON); |
1398 | 0 | } |
1399 | 0 | } |
1400 | 0 | else if (eNewType == OFTInteger64List || eNewType == OFTRealList || |
1401 | 0 | eNewType == OFTStringList) |
1402 | 0 | { |
1403 | 0 | poFDefn->SetSubType(OFSTNone); |
1404 | 0 | poFDefn->SetType(eNewType); |
1405 | 0 | } |
1406 | 0 | else if (eNewType == OFTReal) |
1407 | 0 | { |
1408 | 0 | poFDefn->SetSubType(OFSTNone); |
1409 | 0 | poFDefn->SetType(OFTRealList); |
1410 | 0 | } |
1411 | 0 | else if (eNewType != OFTInteger && eNewType != OFTInteger64 && |
1412 | 0 | eNewType != OFTIntegerList) |
1413 | 0 | { |
1414 | 0 | poFDefn->SetSubType(OFSTNone); |
1415 | 0 | poFDefn->SetType(OFTString); |
1416 | 0 | poFDefn->SetSubType(OFSTJSON); |
1417 | 0 | } |
1418 | 0 | } |
1419 | 0 | else if (eType == OFTRealList) |
1420 | 0 | { |
1421 | 0 | if (eNewType == OFTString) |
1422 | 0 | { |
1423 | 0 | if (!bNewIsEmptyArray) |
1424 | 0 | { |
1425 | 0 | poFDefn->SetSubType(OFSTNone); |
1426 | 0 | poFDefn->SetType(eNewType); |
1427 | 0 | poFDefn->SetSubType(OFSTJSON); |
1428 | 0 | } |
1429 | 0 | } |
1430 | 0 | else if (eNewType == OFTStringList) |
1431 | 0 | { |
1432 | 0 | poFDefn->SetSubType(OFSTNone); |
1433 | 0 | poFDefn->SetType(eNewType); |
1434 | 0 | } |
1435 | 0 | else if (eNewType != OFTInteger && eNewType != OFTInteger64 && |
1436 | 0 | eNewType != OFTReal && eNewType != OFTIntegerList && |
1437 | 0 | eNewType != OFTInteger64List && eNewType != OFTRealList) |
1438 | 0 | { |
1439 | 0 | poFDefn->SetSubType(OFSTNone); |
1440 | 0 | poFDefn->SetType(OFTString); |
1441 | 0 | poFDefn->SetSubType(OFSTJSON); |
1442 | 0 | } |
1443 | 0 | } |
1444 | 0 | else if (eType == OFTStringList) |
1445 | 0 | { |
1446 | 0 | if (eNewType == OFTString && eNewSubType == OFSTJSON) |
1447 | 0 | { |
1448 | 0 | if (!bNewIsEmptyArray) |
1449 | 0 | { |
1450 | 0 | poFDefn->SetSubType(OFSTNone); |
1451 | 0 | poFDefn->SetType(eNewType); |
1452 | 0 | poFDefn->SetSubType(OFSTJSON); |
1453 | 0 | } |
1454 | 0 | } |
1455 | 0 | } |
1456 | 0 | else if (eType == OFTDate || eType == OFTTime || eType == OFTDateTime) |
1457 | 0 | { |
1458 | 0 | if (eNewType == OFTString && !bDateAsString && |
1459 | 0 | eNewSubType == OFSTNone) |
1460 | 0 | { |
1461 | 0 | int nTZFlag = 0; |
1462 | 0 | eNewType = GeoJSONStringPropertyToFieldType(poVal, nTZFlag); |
1463 | 0 | if (poFDefn->GetTZFlag() > OGR_TZFLAG_UNKNOWN && |
1464 | 0 | nTZFlag != poFDefn->GetTZFlag()) |
1465 | 0 | { |
1466 | 0 | if (nTZFlag == OGR_TZFLAG_UNKNOWN) |
1467 | 0 | poFDefn->SetTZFlag(OGR_TZFLAG_UNKNOWN); |
1468 | 0 | else |
1469 | 0 | poFDefn->SetTZFlag(OGR_TZFLAG_MIXED_TZ); |
1470 | 0 | } |
1471 | 0 | } |
1472 | 0 | if (eType != eNewType) |
1473 | 0 | { |
1474 | 0 | poFDefn->SetSubType(OFSTNone); |
1475 | 0 | if (eNewType == OFTString) |
1476 | 0 | { |
1477 | 0 | poFDefn->SetType(eNewType); |
1478 | 0 | poFDefn->SetSubType(eNewSubType); |
1479 | 0 | } |
1480 | 0 | else if (eType == OFTDate && eNewType == OFTDateTime) |
1481 | 0 | { |
1482 | 0 | poFDefn->SetType(OFTDateTime); |
1483 | 0 | } |
1484 | 0 | else if (!(eType == OFTDateTime && eNewType == OFTDate)) |
1485 | 0 | { |
1486 | 0 | poFDefn->SetType(OFTString); |
1487 | 0 | poFDefn->SetSubType(OFSTJSON); |
1488 | 0 | } |
1489 | 0 | } |
1490 | 0 | } |
1491 | |
|
1492 | 0 | poFDefn->SetWidth(poFDefn->GetSubType() == OFSTBoolean ? 1 : 0); |
1493 | 0 | } |
1494 | 0 | else |
1495 | 0 | { |
1496 | 0 | const int nIndex = oMapFieldNameToIdxIter->second; |
1497 | 0 | retIndices.emplace_back(nIndex); |
1498 | 0 | } |
1499 | 0 | } |
1500 | | |
1501 | | /************************************************************************/ |
1502 | | /* OGRGeoJSONGenerateFeatureDefnDealWithID() */ |
1503 | | /************************************************************************/ |
1504 | | |
1505 | | void OGRGeoJSONGenerateFeatureDefnDealWithID( |
1506 | | json_object *poObj, json_object *poObjProps, int &nPrevFieldIdx, |
1507 | | std::map<std::string, int> &oMapFieldNameToIdx, |
1508 | | std::vector<std::unique_ptr<OGRFieldDefn>> &apoFieldDefn, |
1509 | | gdal::DirectedAcyclicGraph<int, std::string> &dag, |
1510 | | bool &bFeatureLevelIdAsFID, bool &bFeatureLevelIdAsAttribute, |
1511 | | bool &bNeedFID64) |
1512 | 0 | { |
1513 | 0 | json_object *poObjId = OGRGeoJSONFindMemberByName(poObj, "id"); |
1514 | 0 | if (poObjId) |
1515 | 0 | { |
1516 | 0 | const auto iterIdxId = oMapFieldNameToIdx.find("id"); |
1517 | 0 | if (iterIdxId == oMapFieldNameToIdx.end()) |
1518 | 0 | { |
1519 | 0 | if (json_object_get_type(poObjId) == json_type_int) |
1520 | 0 | { |
1521 | | // If the value is negative, we cannot use it as the FID |
1522 | | // as OGRMemLayer doesn't support negative FID. And we would |
1523 | | // have an ambiguity with -1 that can mean OGRNullFID |
1524 | | // so in that case create a regular attribute and let OGR |
1525 | | // attribute sequential OGR FIDs. |
1526 | 0 | if (json_object_get_int64(poObjId) < 0) |
1527 | 0 | { |
1528 | 0 | bFeatureLevelIdAsFID = false; |
1529 | 0 | } |
1530 | 0 | else |
1531 | 0 | { |
1532 | 0 | bFeatureLevelIdAsFID = true; |
1533 | 0 | } |
1534 | 0 | } |
1535 | 0 | if (!bFeatureLevelIdAsFID) |
1536 | 0 | { |
1537 | | // If there's a top-level id of type string or negative int, |
1538 | | // and no properties.id, then declare a id field. |
1539 | 0 | bool bHasRegularIdProp = false; |
1540 | 0 | if (nullptr != poObjProps && |
1541 | 0 | json_object_get_type(poObjProps) == json_type_object) |
1542 | 0 | { |
1543 | 0 | bHasRegularIdProp = |
1544 | 0 | CPL_json_object_object_get(poObjProps, "id") != nullptr; |
1545 | 0 | } |
1546 | 0 | if (!bHasRegularIdProp) |
1547 | 0 | { |
1548 | 0 | OGRFieldType eType = OFTString; |
1549 | 0 | if (json_object_get_type(poObjId) == json_type_int) |
1550 | 0 | { |
1551 | 0 | if (CPL_INT64_FITS_ON_INT32( |
1552 | 0 | json_object_get_int64(poObjId))) |
1553 | 0 | eType = OFTInteger; |
1554 | 0 | else |
1555 | 0 | eType = OFTInteger64; |
1556 | 0 | } |
1557 | 0 | apoFieldDefn.emplace_back( |
1558 | 0 | std::make_unique<OGRFieldDefn>("id", eType)); |
1559 | 0 | const int nIdx = static_cast<int>(apoFieldDefn.size()) - 1; |
1560 | 0 | oMapFieldNameToIdx["id"] = nIdx; |
1561 | 0 | nPrevFieldIdx = nIdx; |
1562 | 0 | dag.addNode(nIdx, "id"); |
1563 | 0 | bFeatureLevelIdAsAttribute = true; |
1564 | 0 | } |
1565 | 0 | } |
1566 | 0 | } |
1567 | 0 | else |
1568 | 0 | { |
1569 | 0 | const int nIdx = iterIdxId->second; |
1570 | 0 | nPrevFieldIdx = nIdx; |
1571 | 0 | if (bFeatureLevelIdAsAttribute && |
1572 | 0 | json_object_get_type(poObjId) == json_type_int) |
1573 | 0 | { |
1574 | 0 | if (apoFieldDefn[nIdx]->GetType() == OFTInteger) |
1575 | 0 | { |
1576 | 0 | if (!CPL_INT64_FITS_ON_INT32( |
1577 | 0 | json_object_get_int64(poObjId))) |
1578 | 0 | apoFieldDefn[nIdx]->SetType(OFTInteger64); |
1579 | 0 | } |
1580 | 0 | } |
1581 | 0 | else if (bFeatureLevelIdAsAttribute) |
1582 | 0 | { |
1583 | 0 | apoFieldDefn[nIdx]->SetType(OFTString); |
1584 | 0 | } |
1585 | 0 | } |
1586 | 0 | } |
1587 | |
|
1588 | 0 | if (!bNeedFID64) |
1589 | 0 | { |
1590 | 0 | json_object *poId = CPL_json_object_object_get(poObj, "id"); |
1591 | 0 | if (poId == nullptr) |
1592 | 0 | { |
1593 | 0 | if (poObjProps && |
1594 | 0 | json_object_get_type(poObjProps) == json_type_object) |
1595 | 0 | { |
1596 | 0 | poId = CPL_json_object_object_get(poObjProps, "id"); |
1597 | 0 | } |
1598 | 0 | } |
1599 | 0 | if (poId != nullptr && json_object_get_type(poId) == json_type_int) |
1600 | 0 | { |
1601 | 0 | GIntBig nFID = json_object_get_int64(poId); |
1602 | 0 | if (!CPL_INT64_FITS_ON_INT32(nFID)) |
1603 | 0 | { |
1604 | 0 | bNeedFID64 = true; |
1605 | 0 | } |
1606 | 0 | } |
1607 | 0 | } |
1608 | 0 | } |
1609 | | |
1610 | | /************************************************************************/ |
1611 | | /* GenerateFeatureDefn() */ |
1612 | | /************************************************************************/ |
1613 | | bool OGRGeoJSONBaseReader::GenerateFeatureDefn( |
1614 | | std::map<std::string, int> &oMapFieldNameToIdx, |
1615 | | std::vector<std::unique_ptr<OGRFieldDefn>> &apoFieldDefn, |
1616 | | gdal::DirectedAcyclicGraph<int, std::string> &dag, OGRLayer *poLayer, |
1617 | | json_object *poObj) |
1618 | 0 | { |
1619 | | /* -------------------------------------------------------------------- */ |
1620 | | /* Read collection of properties. */ |
1621 | | /* -------------------------------------------------------------------- */ |
1622 | 0 | lh_entry *poObjPropsEntry = |
1623 | 0 | OGRGeoJSONFindMemberEntryByName(poObj, "properties"); |
1624 | 0 | json_object *poObjProps = |
1625 | 0 | const_cast<json_object *>(static_cast<const json_object *>( |
1626 | 0 | poObjPropsEntry ? poObjPropsEntry->v : nullptr)); |
1627 | |
|
1628 | 0 | std::vector<int> anCurFieldIndices; |
1629 | 0 | int nPrevFieldIdx = -1; |
1630 | |
|
1631 | 0 | OGRGeoJSONGenerateFeatureDefnDealWithID( |
1632 | 0 | poObj, poObjProps, nPrevFieldIdx, oMapFieldNameToIdx, apoFieldDefn, dag, |
1633 | 0 | bFeatureLevelIdAsFID_, bFeatureLevelIdAsAttribute_, m_bNeedFID64); |
1634 | |
|
1635 | 0 | json_object *poGeomObj = CPL_json_object_object_get(poObj, "geometry"); |
1636 | 0 | if (poGeomObj && json_object_get_type(poGeomObj) == json_type_object) |
1637 | 0 | { |
1638 | 0 | const auto eType = |
1639 | 0 | OGRGeoJSONGetOGRGeometryType(poGeomObj, /* bHasM = */ false); |
1640 | |
|
1641 | 0 | OGRGeoJSONUpdateLayerGeomType(m_bFirstGeometry, eType, |
1642 | 0 | m_eLayerGeomType); |
1643 | |
|
1644 | 0 | if (eType != wkbNone && eType != wkbUnknown) |
1645 | 0 | { |
1646 | | // This is maybe too optimistic: it assumes that the geometry |
1647 | | // coordinates array is in the correct format |
1648 | 0 | m_bExtentRead |= OGRGeoJSONGetExtent3D(poGeomObj, &m_oEnvelope3D); |
1649 | 0 | } |
1650 | 0 | } |
1651 | |
|
1652 | 0 | bool bSuccess = false; |
1653 | |
|
1654 | 0 | if (nullptr != poObjProps && |
1655 | 0 | json_object_get_type(poObjProps) == json_type_object) |
1656 | 0 | { |
1657 | 0 | if (bIsGeocouchSpatiallistFormat) |
1658 | 0 | { |
1659 | 0 | poObjProps = CPL_json_object_object_get(poObjProps, "properties"); |
1660 | 0 | if (nullptr == poObjProps || |
1661 | 0 | json_object_get_type(poObjProps) != json_type_object) |
1662 | 0 | { |
1663 | 0 | return true; |
1664 | 0 | } |
1665 | 0 | } |
1666 | | |
1667 | 0 | json_object_iter it; |
1668 | 0 | it.key = nullptr; |
1669 | 0 | it.val = nullptr; |
1670 | 0 | it.entry = nullptr; |
1671 | 0 | json_object_object_foreachC(poObjProps, it) |
1672 | 0 | { |
1673 | 0 | if (!bIsGeocouchSpatiallistFormat && |
1674 | 0 | !cpl::contains(oMapFieldNameToIdx, it.key)) |
1675 | 0 | { |
1676 | | // Detect the special kind of GeoJSON output by a spatiallist of |
1677 | | // GeoCouch such as: |
1678 | | // http://gd.iriscouch.com/cphosm/_design/geo/_rewrite/data?bbox=12.53%2C55.73%2C12.54%2C55.73 |
1679 | 0 | if (strcmp(it.key, "_id") == 0) |
1680 | 0 | { |
1681 | 0 | bFoundGeocouchId = true; |
1682 | 0 | } |
1683 | 0 | else if (bFoundGeocouchId && strcmp(it.key, "_rev") == 0) |
1684 | 0 | { |
1685 | 0 | bFoundRev = true; |
1686 | 0 | } |
1687 | 0 | else if (bFoundRev && strcmp(it.key, "type") == 0 && |
1688 | 0 | it.val != nullptr && |
1689 | 0 | json_object_get_type(it.val) == json_type_string && |
1690 | 0 | strcmp(json_object_get_string(it.val), "Feature") == 0) |
1691 | 0 | { |
1692 | 0 | bFoundTypeFeature = true; |
1693 | 0 | } |
1694 | 0 | else if (bFoundTypeFeature && |
1695 | 0 | strcmp(it.key, "properties") == 0 && |
1696 | 0 | it.val != nullptr && |
1697 | 0 | json_object_get_type(it.val) == json_type_object) |
1698 | 0 | { |
1699 | 0 | if (bFlattenGeocouchSpatiallistFormat < 0) |
1700 | 0 | bFlattenGeocouchSpatiallistFormat = |
1701 | 0 | CPLTestBool(CPLGetConfigOption( |
1702 | 0 | "GEOJSON_FLATTEN_GEOCOUCH", "TRUE")); |
1703 | 0 | if (bFlattenGeocouchSpatiallistFormat) |
1704 | 0 | { |
1705 | 0 | const auto typeIter = oMapFieldNameToIdx.find("type"); |
1706 | 0 | if (typeIter != oMapFieldNameToIdx.end()) |
1707 | 0 | { |
1708 | 0 | const int nIdx = typeIter->second; |
1709 | 0 | apoFieldDefn.erase(apoFieldDefn.begin() + nIdx); |
1710 | 0 | oMapFieldNameToIdx.erase(typeIter); |
1711 | 0 | dag.removeNode(nIdx); |
1712 | 0 | } |
1713 | |
|
1714 | 0 | bIsGeocouchSpatiallistFormat = true; |
1715 | 0 | return GenerateFeatureDefn(oMapFieldNameToIdx, |
1716 | 0 | apoFieldDefn, dag, poLayer, |
1717 | 0 | poObj); |
1718 | 0 | } |
1719 | 0 | } |
1720 | 0 | } |
1721 | | |
1722 | 0 | anCurFieldIndices.clear(); |
1723 | 0 | OGRGeoJSONReaderAddOrUpdateField( |
1724 | 0 | anCurFieldIndices, oMapFieldNameToIdx, apoFieldDefn, it.key, |
1725 | 0 | it.val, bFlattenNestedAttributes_, chNestedAttributeSeparator_, |
1726 | 0 | bArrayAsString_, bDateAsString_, aoSetUndeterminedTypeFields_); |
1727 | 0 | for (int idx : anCurFieldIndices) |
1728 | 0 | { |
1729 | 0 | dag.addNode(idx, apoFieldDefn[idx]->GetNameRef()); |
1730 | 0 | if (nPrevFieldIdx != -1) |
1731 | 0 | { |
1732 | 0 | dag.addEdge(nPrevFieldIdx, idx); |
1733 | 0 | } |
1734 | 0 | nPrevFieldIdx = idx; |
1735 | 0 | } |
1736 | 0 | } |
1737 | | |
1738 | | // Whether/how we should deal with foreign members |
1739 | 0 | if (eForeignMemberProcessing_ == ForeignMemberProcessing::AUTO) |
1740 | 0 | { |
1741 | 0 | if (CPL_json_object_object_get(poObj, "stac_version")) |
1742 | 0 | eForeignMemberProcessing_ = ForeignMemberProcessing::STAC; |
1743 | 0 | else |
1744 | 0 | eForeignMemberProcessing_ = ForeignMemberProcessing::NONE; |
1745 | 0 | } |
1746 | 0 | if (eForeignMemberProcessing_ != ForeignMemberProcessing::NONE) |
1747 | 0 | { |
1748 | 0 | it.key = nullptr; |
1749 | 0 | it.val = nullptr; |
1750 | 0 | it.entry = nullptr; |
1751 | 0 | json_object_object_foreachC(poObj, it) |
1752 | 0 | { |
1753 | 0 | if (eForeignMemberProcessing_ == |
1754 | 0 | ForeignMemberProcessing::STAC && |
1755 | 0 | strcmp(it.key, "assets") == 0 && |
1756 | 0 | json_object_get_type(it.val) == json_type_object) |
1757 | 0 | { |
1758 | 0 | json_object_iter it2; |
1759 | 0 | it2.key = nullptr; |
1760 | 0 | it2.val = nullptr; |
1761 | 0 | it2.entry = nullptr; |
1762 | 0 | json_object_object_foreachC(it.val, it2) |
1763 | 0 | { |
1764 | 0 | if (json_object_get_type(it2.val) == json_type_object) |
1765 | 0 | { |
1766 | 0 | json_object_iter it3; |
1767 | 0 | it3.key = nullptr; |
1768 | 0 | it3.val = nullptr; |
1769 | 0 | it3.entry = nullptr; |
1770 | 0 | json_object_object_foreachC(it2.val, it3) |
1771 | 0 | { |
1772 | 0 | anCurFieldIndices.clear(); |
1773 | 0 | OGRGeoJSONReaderAddOrUpdateField( |
1774 | 0 | anCurFieldIndices, oMapFieldNameToIdx, |
1775 | 0 | apoFieldDefn, |
1776 | 0 | std::string("assets.") |
1777 | 0 | .append(it2.key) |
1778 | 0 | .append(".") |
1779 | 0 | .append(it3.key) |
1780 | 0 | .c_str(), |
1781 | 0 | it3.val, bFlattenNestedAttributes_, |
1782 | 0 | chNestedAttributeSeparator_, |
1783 | 0 | bArrayAsString_, bDateAsString_, |
1784 | 0 | aoSetUndeterminedTypeFields_); |
1785 | 0 | for (int idx : anCurFieldIndices) |
1786 | 0 | { |
1787 | 0 | dag.addNode( |
1788 | 0 | idx, apoFieldDefn[idx]->GetNameRef()); |
1789 | 0 | if (nPrevFieldIdx != -1) |
1790 | 0 | { |
1791 | 0 | dag.addEdge(nPrevFieldIdx, idx); |
1792 | 0 | } |
1793 | 0 | nPrevFieldIdx = idx; |
1794 | 0 | } |
1795 | 0 | } |
1796 | 0 | } |
1797 | 0 | } |
1798 | 0 | } |
1799 | 0 | else if (strcmp(it.key, "type") != 0 && |
1800 | 0 | strcmp(it.key, "id") != 0 && |
1801 | 0 | strcmp(it.key, "geometry") != 0 && |
1802 | 0 | strcmp(it.key, "bbox") != 0 && |
1803 | 0 | strcmp(it.key, "properties") != 0) |
1804 | 0 | { |
1805 | 0 | anCurFieldIndices.clear(); |
1806 | 0 | OGRGeoJSONReaderAddOrUpdateField( |
1807 | 0 | anCurFieldIndices, oMapFieldNameToIdx, apoFieldDefn, |
1808 | 0 | it.key, it.val, bFlattenNestedAttributes_, |
1809 | 0 | chNestedAttributeSeparator_, bArrayAsString_, |
1810 | 0 | bDateAsString_, aoSetUndeterminedTypeFields_); |
1811 | 0 | for (int idx : anCurFieldIndices) |
1812 | 0 | { |
1813 | 0 | dag.addNode(idx, apoFieldDefn[idx]->GetNameRef()); |
1814 | 0 | if (nPrevFieldIdx != -1) |
1815 | 0 | { |
1816 | 0 | dag.addEdge(nPrevFieldIdx, idx); |
1817 | 0 | } |
1818 | 0 | nPrevFieldIdx = idx; |
1819 | 0 | } |
1820 | 0 | } |
1821 | 0 | } |
1822 | 0 | } |
1823 | |
|
1824 | 0 | bSuccess = true; // SUCCESS |
1825 | 0 | } |
1826 | 0 | else if (nullptr != poObjPropsEntry && |
1827 | 0 | (poObjProps == nullptr || |
1828 | 0 | (json_object_get_type(poObjProps) == json_type_array && |
1829 | 0 | json_object_array_length(poObjProps) == 0))) |
1830 | 0 | { |
1831 | | // Ignore "properties": null and "properties": [] |
1832 | 0 | bSuccess = true; |
1833 | 0 | } |
1834 | 0 | else if (poObj != nullptr && |
1835 | 0 | json_object_get_type(poObj) == json_type_object) |
1836 | 0 | { |
1837 | 0 | json_object_iter it; |
1838 | 0 | it.key = nullptr; |
1839 | 0 | it.val = nullptr; |
1840 | 0 | it.entry = nullptr; |
1841 | 0 | json_object_object_foreachC(poObj, it) |
1842 | 0 | { |
1843 | 0 | if (strcmp(it.key, "type") != 0 && |
1844 | 0 | strcmp(it.key, "geometry") != 0 && |
1845 | 0 | strcmp(it.key, "centroid") != 0 && |
1846 | 0 | strcmp(it.key, "bbox") != 0 && strcmp(it.key, "center") != 0) |
1847 | 0 | { |
1848 | 0 | if (!cpl::contains(oMapFieldNameToIdx, it.key)) |
1849 | 0 | { |
1850 | 0 | anCurFieldIndices.clear(); |
1851 | 0 | OGRGeoJSONReaderAddOrUpdateField( |
1852 | 0 | anCurFieldIndices, oMapFieldNameToIdx, apoFieldDefn, |
1853 | 0 | it.key, it.val, bFlattenNestedAttributes_, |
1854 | 0 | chNestedAttributeSeparator_, bArrayAsString_, |
1855 | 0 | bDateAsString_, aoSetUndeterminedTypeFields_); |
1856 | 0 | for (int idx : anCurFieldIndices) |
1857 | 0 | { |
1858 | 0 | dag.addNode(idx, apoFieldDefn[idx]->GetNameRef()); |
1859 | 0 | if (nPrevFieldIdx != -1) |
1860 | 0 | { |
1861 | 0 | dag.addEdge(nPrevFieldIdx, idx); |
1862 | 0 | } |
1863 | 0 | nPrevFieldIdx = idx; |
1864 | 0 | } |
1865 | 0 | } |
1866 | 0 | } |
1867 | 0 | } |
1868 | |
|
1869 | 0 | bSuccess = true; // SUCCESS |
1870 | | // CPLError(CE_Failure, CPLE_AppDefined, |
1871 | | // "Invalid Feature object. " |
1872 | | // "Missing \'properties\' member." ); |
1873 | 0 | } |
1874 | | |
1875 | 0 | return bSuccess; |
1876 | 0 | } |
1877 | | |
1878 | | /************************************************************************/ |
1879 | | /* OGRGeoJSONUpdateLayerGeomType() */ |
1880 | | /************************************************************************/ |
1881 | | |
1882 | | bool OGRGeoJSONUpdateLayerGeomType(bool &bFirstGeom, |
1883 | | OGRwkbGeometryType eGeomType, |
1884 | | OGRwkbGeometryType &eLayerGeomType) |
1885 | 0 | { |
1886 | 0 | if (bFirstGeom) |
1887 | 0 | { |
1888 | 0 | eLayerGeomType = eGeomType; |
1889 | 0 | bFirstGeom = false; |
1890 | 0 | } |
1891 | 0 | else if (OGR_GT_HasZ(eGeomType) && !OGR_GT_HasZ(eLayerGeomType) && |
1892 | 0 | wkbFlatten(eGeomType) == wkbFlatten(eLayerGeomType)) |
1893 | 0 | { |
1894 | 0 | eLayerGeomType = eGeomType; |
1895 | 0 | } |
1896 | 0 | else if (!OGR_GT_HasZ(eGeomType) && OGR_GT_HasZ(eLayerGeomType) && |
1897 | 0 | wkbFlatten(eGeomType) == wkbFlatten(eLayerGeomType)) |
1898 | 0 | { |
1899 | | // ok |
1900 | 0 | } |
1901 | 0 | else if (eGeomType != eLayerGeomType && eLayerGeomType != wkbUnknown) |
1902 | 0 | { |
1903 | 0 | CPLDebug("GeoJSON", "Detected layer of mixed-geometry type features."); |
1904 | 0 | eLayerGeomType = wkbUnknown; |
1905 | 0 | return false; |
1906 | 0 | } |
1907 | 0 | return true; |
1908 | 0 | } |
1909 | | |
1910 | | /************************************************************************/ |
1911 | | /* AddFeature */ |
1912 | | /************************************************************************/ |
1913 | | |
1914 | | bool OGRGeoJSONReader::AddFeature(OGRGeoJSONLayer *poLayer, |
1915 | | std::unique_ptr<OGRGeometry> poGeometry) |
1916 | 0 | { |
1917 | 0 | bool bAdded = false; |
1918 | | |
1919 | | // TODO: Should we check if geometry is of type of wkbGeometryCollection? |
1920 | |
|
1921 | 0 | if (nullptr != poGeometry) |
1922 | 0 | { |
1923 | 0 | auto poFeature = std::make_unique<OGRFeature>(poLayer->GetLayerDefn()); |
1924 | 0 | poFeature->SetGeometry(std::move(poGeometry)); |
1925 | |
|
1926 | 0 | bAdded = AddFeature(poLayer, std::move(poFeature)); |
1927 | 0 | } |
1928 | |
|
1929 | 0 | return bAdded; |
1930 | 0 | } |
1931 | | |
1932 | | /************************************************************************/ |
1933 | | /* AddFeature */ |
1934 | | /************************************************************************/ |
1935 | | |
1936 | | bool OGRGeoJSONReader::AddFeature(OGRGeoJSONLayer *poLayer, |
1937 | | std::unique_ptr<OGRFeature> poFeature) |
1938 | 0 | { |
1939 | 0 | if (poFeature == nullptr) |
1940 | 0 | return false; |
1941 | | |
1942 | 0 | poLayer->AddFeature(std::move(poFeature)); |
1943 | |
|
1944 | 0 | return true; |
1945 | 0 | } |
1946 | | |
1947 | | /************************************************************************/ |
1948 | | /* ReadGeometry */ |
1949 | | /************************************************************************/ |
1950 | | |
1951 | | OGRGeometry * |
1952 | | OGRGeoJSONBaseReader::ReadGeometry(json_object *poObj, |
1953 | | const OGRSpatialReference *poLayerSRS) |
1954 | 0 | { |
1955 | 0 | auto poGeometry = |
1956 | 0 | OGRGeoJSONReadGeometry(poObj, /* bHasM = */ false, poLayerSRS); |
1957 | | |
1958 | | /* -------------------------------------------------------------------- */ |
1959 | | /* Wrap geometry with GeometryCollection as a common denominator. */ |
1960 | | /* Sometimes a GeoJSON text may consist of objects of different */ |
1961 | | /* geometry types. Users may request wrapping all geometries with */ |
1962 | | /* OGRGeometryCollection type by using option */ |
1963 | | /* GEOMETRY_AS_COLLECTION=NO|YES (NO is default). */ |
1964 | | /* -------------------------------------------------------------------- */ |
1965 | 0 | if (nullptr != poGeometry) |
1966 | 0 | { |
1967 | 0 | if (!bGeometryPreserve_ && |
1968 | 0 | wkbGeometryCollection != poGeometry->getGeometryType()) |
1969 | 0 | { |
1970 | 0 | auto poMetaGeometry = std::make_unique<OGRGeometryCollection>(); |
1971 | 0 | poMetaGeometry->addGeometry(std::move(poGeometry)); |
1972 | 0 | return poMetaGeometry.release(); |
1973 | 0 | } |
1974 | 0 | } |
1975 | | |
1976 | 0 | return poGeometry.release(); |
1977 | 0 | } |
1978 | | |
1979 | | /************************************************************************/ |
1980 | | /* OGRGeoJSONReaderSetFieldNestedAttribute() */ |
1981 | | /************************************************************************/ |
1982 | | |
1983 | | static void OGRGeoJSONReaderSetFieldNestedAttribute(OGRLayer *poLayer, |
1984 | | OGRFeature *poFeature, |
1985 | | const char *pszAttrPrefix, |
1986 | | char chSeparator, |
1987 | | json_object *poVal) |
1988 | 0 | { |
1989 | 0 | json_object_iter it; |
1990 | 0 | it.key = nullptr; |
1991 | 0 | it.val = nullptr; |
1992 | 0 | it.entry = nullptr; |
1993 | 0 | json_object_object_foreachC(poVal, it) |
1994 | 0 | { |
1995 | 0 | const char szSeparator[2] = {chSeparator, '\0'}; |
1996 | 0 | const CPLString osAttrName( |
1997 | 0 | CPLSPrintf("%s%s%s", pszAttrPrefix, szSeparator, it.key)); |
1998 | 0 | if (it.val != nullptr && |
1999 | 0 | json_object_get_type(it.val) == json_type_object) |
2000 | 0 | { |
2001 | 0 | OGRGeoJSONReaderSetFieldNestedAttribute( |
2002 | 0 | poLayer, poFeature, osAttrName, chSeparator, it.val); |
2003 | 0 | } |
2004 | 0 | else |
2005 | 0 | { |
2006 | 0 | const int nField = |
2007 | 0 | poFeature->GetDefnRef()->GetFieldIndexCaseSensitive(osAttrName); |
2008 | 0 | OGRGeoJSONReaderSetField(poLayer, poFeature, nField, osAttrName, |
2009 | 0 | it.val, false, 0); |
2010 | 0 | } |
2011 | 0 | } |
2012 | 0 | } |
2013 | | |
2014 | | /************************************************************************/ |
2015 | | /* OGRGeoJSONReaderSetField() */ |
2016 | | /************************************************************************/ |
2017 | | |
2018 | | void OGRGeoJSONReaderSetField(OGRLayer *poLayer, OGRFeature *poFeature, |
2019 | | int nField, const char *pszAttrPrefix, |
2020 | | json_object *poVal, bool bFlattenNestedAttributes, |
2021 | | char chNestedAttributeSeparator) |
2022 | 0 | { |
2023 | 0 | if (bFlattenNestedAttributes && poVal != nullptr && |
2024 | 0 | json_object_get_type(poVal) == json_type_object) |
2025 | 0 | { |
2026 | 0 | OGRGeoJSONReaderSetFieldNestedAttribute( |
2027 | 0 | poLayer, poFeature, pszAttrPrefix, chNestedAttributeSeparator, |
2028 | 0 | poVal); |
2029 | 0 | return; |
2030 | 0 | } |
2031 | 0 | if (nField < 0) |
2032 | 0 | return; |
2033 | | |
2034 | 0 | const OGRFieldDefn *poFieldDefn = poFeature->GetFieldDefnRef(nField); |
2035 | 0 | CPLAssert(nullptr != poFieldDefn); |
2036 | 0 | OGRFieldType eType = poFieldDefn->GetType(); |
2037 | |
|
2038 | 0 | if (poVal == nullptr) |
2039 | 0 | { |
2040 | 0 | poFeature->SetFieldNull(nField); |
2041 | 0 | } |
2042 | 0 | else if (OFTInteger == eType) |
2043 | 0 | { |
2044 | 0 | poFeature->SetField(nField, json_object_get_int(poVal)); |
2045 | | |
2046 | | // Check if FID available and set correct value. |
2047 | 0 | if (EQUAL(poFieldDefn->GetNameRef(), poLayer->GetFIDColumn())) |
2048 | 0 | poFeature->SetFID(json_object_get_int(poVal)); |
2049 | 0 | } |
2050 | 0 | else if (OFTInteger64 == eType) |
2051 | 0 | { |
2052 | 0 | poFeature->SetField(nField, (GIntBig)json_object_get_int64(poVal)); |
2053 | | |
2054 | | // Check if FID available and set correct value. |
2055 | 0 | if (EQUAL(poFieldDefn->GetNameRef(), poLayer->GetFIDColumn())) |
2056 | 0 | poFeature->SetFID( |
2057 | 0 | static_cast<GIntBig>(json_object_get_int64(poVal))); |
2058 | 0 | } |
2059 | 0 | else if (OFTReal == eType) |
2060 | 0 | { |
2061 | 0 | poFeature->SetField(nField, json_object_get_double(poVal)); |
2062 | 0 | } |
2063 | 0 | else if (OFTIntegerList == eType) |
2064 | 0 | { |
2065 | 0 | const enum json_type eJSonType(json_object_get_type(poVal)); |
2066 | 0 | if (eJSonType == json_type_array) |
2067 | 0 | { |
2068 | 0 | const auto nLength = json_object_array_length(poVal); |
2069 | 0 | int *panVal = static_cast<int *>(CPLMalloc(sizeof(int) * nLength)); |
2070 | 0 | for (auto i = decltype(nLength){0}; i < nLength; i++) |
2071 | 0 | { |
2072 | 0 | json_object *poRow = json_object_array_get_idx(poVal, i); |
2073 | 0 | panVal[i] = json_object_get_int(poRow); |
2074 | 0 | } |
2075 | 0 | poFeature->SetField(nField, static_cast<int>(nLength), panVal); |
2076 | 0 | CPLFree(panVal); |
2077 | 0 | } |
2078 | 0 | else if (eJSonType == json_type_boolean || eJSonType == json_type_int) |
2079 | 0 | { |
2080 | 0 | poFeature->SetField(nField, json_object_get_int(poVal)); |
2081 | 0 | } |
2082 | 0 | } |
2083 | 0 | else if (OFTInteger64List == eType) |
2084 | 0 | { |
2085 | 0 | const enum json_type eJSonType(json_object_get_type(poVal)); |
2086 | 0 | if (eJSonType == json_type_array) |
2087 | 0 | { |
2088 | 0 | const auto nLength = json_object_array_length(poVal); |
2089 | 0 | GIntBig *panVal = |
2090 | 0 | static_cast<GIntBig *>(CPLMalloc(sizeof(GIntBig) * nLength)); |
2091 | 0 | for (auto i = decltype(nLength){0}; i < nLength; i++) |
2092 | 0 | { |
2093 | 0 | json_object *poRow = json_object_array_get_idx(poVal, i); |
2094 | 0 | panVal[i] = static_cast<GIntBig>(json_object_get_int64(poRow)); |
2095 | 0 | } |
2096 | 0 | poFeature->SetField(nField, static_cast<int>(nLength), panVal); |
2097 | 0 | CPLFree(panVal); |
2098 | 0 | } |
2099 | 0 | else if (eJSonType == json_type_boolean || eJSonType == json_type_int) |
2100 | 0 | { |
2101 | 0 | poFeature->SetField( |
2102 | 0 | nField, static_cast<GIntBig>(json_object_get_int64(poVal))); |
2103 | 0 | } |
2104 | 0 | } |
2105 | 0 | else if (OFTRealList == eType) |
2106 | 0 | { |
2107 | 0 | const enum json_type eJSonType(json_object_get_type(poVal)); |
2108 | 0 | if (eJSonType == json_type_array) |
2109 | 0 | { |
2110 | 0 | const auto nLength = json_object_array_length(poVal); |
2111 | 0 | double *padfVal = |
2112 | 0 | static_cast<double *>(CPLMalloc(sizeof(double) * nLength)); |
2113 | 0 | for (auto i = decltype(nLength){0}; i < nLength; i++) |
2114 | 0 | { |
2115 | 0 | json_object *poRow = json_object_array_get_idx(poVal, i); |
2116 | 0 | padfVal[i] = json_object_get_double(poRow); |
2117 | 0 | } |
2118 | 0 | poFeature->SetField(nField, static_cast<int>(nLength), padfVal); |
2119 | 0 | CPLFree(padfVal); |
2120 | 0 | } |
2121 | 0 | else if (eJSonType == json_type_boolean || eJSonType == json_type_int || |
2122 | 0 | eJSonType == json_type_double) |
2123 | 0 | { |
2124 | 0 | poFeature->SetField(nField, json_object_get_double(poVal)); |
2125 | 0 | } |
2126 | 0 | } |
2127 | 0 | else if (OFTStringList == eType) |
2128 | 0 | { |
2129 | 0 | const enum json_type eJSonType(json_object_get_type(poVal)); |
2130 | 0 | if (eJSonType == json_type_array) |
2131 | 0 | { |
2132 | 0 | auto nLength = json_object_array_length(poVal); |
2133 | 0 | char **papszVal = |
2134 | 0 | (char **)CPLMalloc(sizeof(char *) * (nLength + 1)); |
2135 | 0 | decltype(nLength) i = 0; // Used after for. |
2136 | 0 | for (; i < nLength; i++) |
2137 | 0 | { |
2138 | 0 | json_object *poRow = json_object_array_get_idx(poVal, i); |
2139 | 0 | const char *pszVal = json_object_get_string(poRow); |
2140 | 0 | if (pszVal == nullptr) |
2141 | 0 | break; |
2142 | 0 | papszVal[i] = CPLStrdup(pszVal); |
2143 | 0 | } |
2144 | 0 | papszVal[i] = nullptr; |
2145 | 0 | poFeature->SetField(nField, papszVal); |
2146 | 0 | CSLDestroy(papszVal); |
2147 | 0 | } |
2148 | 0 | else |
2149 | 0 | { |
2150 | 0 | poFeature->SetField(nField, json_object_get_string(poVal)); |
2151 | 0 | } |
2152 | 0 | } |
2153 | 0 | else |
2154 | 0 | { |
2155 | 0 | poFeature->SetField(nField, json_object_get_string(poVal)); |
2156 | 0 | } |
2157 | 0 | } |
2158 | | |
2159 | | /************************************************************************/ |
2160 | | /* ReadFeature() */ |
2161 | | /************************************************************************/ |
2162 | | |
2163 | | OGRFeature *OGRGeoJSONBaseReader::ReadFeature(OGRLayer *poLayer, |
2164 | | json_object *poObj, |
2165 | | const char *pszSerializedObj) |
2166 | 0 | { |
2167 | 0 | CPLAssert(nullptr != poObj); |
2168 | | |
2169 | 0 | OGRFeatureDefn *poFDefn = poLayer->GetLayerDefn(); |
2170 | 0 | OGRFeature *poFeature = new OGRFeature(poFDefn); |
2171 | |
|
2172 | 0 | if (bStoreNativeData_) |
2173 | 0 | { |
2174 | 0 | poFeature->SetNativeData(pszSerializedObj |
2175 | 0 | ? pszSerializedObj |
2176 | 0 | : json_object_to_json_string(poObj)); |
2177 | 0 | poFeature->SetNativeMediaType("application/geo+json"); |
2178 | 0 | } |
2179 | | |
2180 | | /* -------------------------------------------------------------------- */ |
2181 | | /* Translate GeoJSON "properties" object to feature attributes. */ |
2182 | | /* -------------------------------------------------------------------- */ |
2183 | 0 | CPLAssert(nullptr != poFeature); |
2184 | | |
2185 | 0 | json_object *poObjProps = OGRGeoJSONFindMemberByName(poObj, "properties"); |
2186 | 0 | if (!bAttributesSkip_ && nullptr != poObjProps && |
2187 | 0 | json_object_get_type(poObjProps) == json_type_object) |
2188 | 0 | { |
2189 | 0 | if (bIsGeocouchSpatiallistFormat) |
2190 | 0 | { |
2191 | 0 | json_object *poId = CPL_json_object_object_get(poObjProps, "_id"); |
2192 | 0 | if (poId != nullptr && |
2193 | 0 | json_object_get_type(poId) == json_type_string) |
2194 | 0 | poFeature->SetField("_id", json_object_get_string(poId)); |
2195 | |
|
2196 | 0 | json_object *poRev = CPL_json_object_object_get(poObjProps, "_rev"); |
2197 | 0 | if (poRev != nullptr && |
2198 | 0 | json_object_get_type(poRev) == json_type_string) |
2199 | 0 | { |
2200 | 0 | poFeature->SetField("_rev", json_object_get_string(poRev)); |
2201 | 0 | } |
2202 | |
|
2203 | 0 | poObjProps = CPL_json_object_object_get(poObjProps, "properties"); |
2204 | 0 | if (nullptr == poObjProps || |
2205 | 0 | json_object_get_type(poObjProps) != json_type_object) |
2206 | 0 | { |
2207 | 0 | return poFeature; |
2208 | 0 | } |
2209 | 0 | } |
2210 | | |
2211 | 0 | json_object_iter it; |
2212 | 0 | it.key = nullptr; |
2213 | 0 | it.val = nullptr; |
2214 | 0 | it.entry = nullptr; |
2215 | 0 | json_object_object_foreachC(poObjProps, it) |
2216 | 0 | { |
2217 | 0 | const int nField = poFDefn->GetFieldIndexCaseSensitive(it.key); |
2218 | 0 | if (nField < 0 && |
2219 | 0 | !(bFlattenNestedAttributes_ && it.val != nullptr && |
2220 | 0 | json_object_get_type(it.val) == json_type_object)) |
2221 | 0 | { |
2222 | 0 | CPLDebug("GeoJSON", "Cannot find field %s", it.key); |
2223 | 0 | } |
2224 | 0 | else |
2225 | 0 | { |
2226 | 0 | OGRGeoJSONReaderSetField(poLayer, poFeature, nField, it.key, |
2227 | 0 | it.val, bFlattenNestedAttributes_, |
2228 | 0 | chNestedAttributeSeparator_); |
2229 | 0 | } |
2230 | 0 | } |
2231 | 0 | } |
2232 | | |
2233 | | // Whether/how we should deal with foreign members |
2234 | 0 | if (!bAttributesSkip_ && |
2235 | 0 | eForeignMemberProcessing_ != ForeignMemberProcessing::NONE) |
2236 | 0 | { |
2237 | 0 | json_object_iter it; |
2238 | 0 | it.key = nullptr; |
2239 | 0 | it.val = nullptr; |
2240 | 0 | it.entry = nullptr; |
2241 | 0 | json_object_object_foreachC(poObj, it) |
2242 | 0 | { |
2243 | 0 | if (eForeignMemberProcessing_ == ForeignMemberProcessing::STAC && |
2244 | 0 | strcmp(it.key, "assets") == 0 && |
2245 | 0 | json_object_get_type(it.val) == json_type_object) |
2246 | 0 | { |
2247 | 0 | json_object_iter it2; |
2248 | 0 | it2.key = nullptr; |
2249 | 0 | it2.val = nullptr; |
2250 | 0 | it2.entry = nullptr; |
2251 | 0 | json_object_object_foreachC(it.val, it2) |
2252 | 0 | { |
2253 | 0 | if (json_object_get_type(it2.val) == json_type_object) |
2254 | 0 | { |
2255 | 0 | json_object_iter it3; |
2256 | 0 | it3.key = nullptr; |
2257 | 0 | it3.val = nullptr; |
2258 | 0 | it3.entry = nullptr; |
2259 | 0 | json_object_object_foreachC(it2.val, it3) |
2260 | 0 | { |
2261 | 0 | const std::string osFieldName = |
2262 | 0 | std::string("assets.") |
2263 | 0 | .append(it2.key) |
2264 | 0 | .append(".") |
2265 | 0 | .append(it3.key) |
2266 | 0 | .c_str(); |
2267 | 0 | const int nField = |
2268 | 0 | poFDefn->GetFieldIndexCaseSensitive( |
2269 | 0 | osFieldName.c_str()); |
2270 | 0 | if (nField < 0 && !(bFlattenNestedAttributes_ && |
2271 | 0 | it3.val != nullptr && |
2272 | 0 | json_object_get_type(it3.val) == |
2273 | 0 | json_type_object)) |
2274 | 0 | { |
2275 | 0 | CPLDebug("GeoJSON", "Cannot find field %s", |
2276 | 0 | osFieldName.c_str()); |
2277 | 0 | } |
2278 | 0 | else |
2279 | 0 | { |
2280 | 0 | OGRGeoJSONReaderSetField( |
2281 | 0 | poLayer, poFeature, nField, |
2282 | 0 | osFieldName.c_str(), it3.val, |
2283 | 0 | bFlattenNestedAttributes_, |
2284 | 0 | chNestedAttributeSeparator_); |
2285 | 0 | } |
2286 | 0 | } |
2287 | 0 | } |
2288 | 0 | } |
2289 | 0 | } |
2290 | 0 | else if (strcmp(it.key, "type") != 0 && strcmp(it.key, "id") != 0 && |
2291 | 0 | strcmp(it.key, "geometry") != 0 && |
2292 | 0 | strcmp(it.key, "bbox") != 0 && |
2293 | 0 | strcmp(it.key, "properties") != 0) |
2294 | 0 | { |
2295 | 0 | const int nField = poFDefn->GetFieldIndexCaseSensitive(it.key); |
2296 | 0 | if (nField < 0 && |
2297 | 0 | !(bFlattenNestedAttributes_ && it.val != nullptr && |
2298 | 0 | json_object_get_type(it.val) == json_type_object)) |
2299 | 0 | { |
2300 | 0 | CPLDebug("GeoJSON", "Cannot find field %s", it.key); |
2301 | 0 | } |
2302 | 0 | else |
2303 | 0 | { |
2304 | 0 | OGRGeoJSONReaderSetField(poLayer, poFeature, nField, it.key, |
2305 | 0 | it.val, bFlattenNestedAttributes_, |
2306 | 0 | chNestedAttributeSeparator_); |
2307 | 0 | } |
2308 | 0 | } |
2309 | 0 | } |
2310 | 0 | } |
2311 | |
|
2312 | 0 | if (!bAttributesSkip_ && nullptr == poObjProps) |
2313 | 0 | { |
2314 | 0 | json_object_iter it; |
2315 | 0 | it.key = nullptr; |
2316 | 0 | it.val = nullptr; |
2317 | 0 | it.entry = nullptr; |
2318 | 0 | json_object_object_foreachC(poObj, it) |
2319 | 0 | { |
2320 | 0 | const int nFldIndex = poFDefn->GetFieldIndexCaseSensitive(it.key); |
2321 | 0 | if (nFldIndex >= 0) |
2322 | 0 | { |
2323 | 0 | if (it.val) |
2324 | 0 | poFeature->SetField(nFldIndex, |
2325 | 0 | json_object_get_string(it.val)); |
2326 | 0 | else |
2327 | 0 | poFeature->SetFieldNull(nFldIndex); |
2328 | 0 | } |
2329 | 0 | } |
2330 | 0 | } |
2331 | | |
2332 | | /* -------------------------------------------------------------------- */ |
2333 | | /* Try to use feature-level ID if available */ |
2334 | | /* and of integral type. Otherwise, leave unset (-1) then index */ |
2335 | | /* in features sequence will be used as FID. */ |
2336 | | /* -------------------------------------------------------------------- */ |
2337 | 0 | json_object *poObjId = OGRGeoJSONFindMemberByName(poObj, "id"); |
2338 | 0 | if (nullptr != poObjId && bFeatureLevelIdAsFID_) |
2339 | 0 | { |
2340 | 0 | poFeature->SetFID(static_cast<GIntBig>(json_object_get_int64(poObjId))); |
2341 | 0 | } |
2342 | | |
2343 | | /* -------------------------------------------------------------------- */ |
2344 | | /* Handle the case where the special id is in a regular field. */ |
2345 | | /* -------------------------------------------------------------------- */ |
2346 | 0 | else if (nullptr != poObjId) |
2347 | 0 | { |
2348 | 0 | const int nIdx = poFDefn->GetFieldIndexCaseSensitive("id"); |
2349 | 0 | if (nIdx >= 0 && !poFeature->IsFieldSet(nIdx)) |
2350 | 0 | { |
2351 | 0 | poFeature->SetField(nIdx, json_object_get_string(poObjId)); |
2352 | 0 | } |
2353 | 0 | } |
2354 | | |
2355 | | /* -------------------------------------------------------------------- */ |
2356 | | /* Translate geometry sub-object of GeoJSON Feature. */ |
2357 | | /* -------------------------------------------------------------------- */ |
2358 | 0 | json_object *poObjGeom = nullptr; |
2359 | 0 | json_object *poTmp = poObj; |
2360 | 0 | json_object_iter it; |
2361 | 0 | it.key = nullptr; |
2362 | 0 | it.val = nullptr; |
2363 | 0 | it.entry = nullptr; |
2364 | 0 | json_object_object_foreachC(poTmp, it) |
2365 | 0 | { |
2366 | 0 | if (EQUAL(it.key, "geometry")) |
2367 | 0 | { |
2368 | 0 | if (it.val != nullptr) |
2369 | 0 | poObjGeom = it.val; |
2370 | | // Done. They had 'geometry':null. |
2371 | 0 | else |
2372 | 0 | return poFeature; |
2373 | 0 | } |
2374 | 0 | } |
2375 | | |
2376 | 0 | if (nullptr != poObjGeom) |
2377 | 0 | { |
2378 | | // NOTE: If geometry can not be parsed or read correctly |
2379 | | // then NULL geometry is assigned to a feature and |
2380 | | // geometry type for layer is classified as wkbUnknown. |
2381 | 0 | OGRGeometry *poGeometry = |
2382 | 0 | ReadGeometry(poObjGeom, poLayer->GetSpatialRef()); |
2383 | 0 | if (nullptr != poGeometry) |
2384 | 0 | { |
2385 | 0 | poFeature->SetGeometryDirectly(poGeometry); |
2386 | 0 | } |
2387 | 0 | } |
2388 | 0 | else |
2389 | 0 | { |
2390 | 0 | static bool bWarned = false; |
2391 | 0 | if (!bWarned) |
2392 | 0 | { |
2393 | 0 | bWarned = true; |
2394 | 0 | CPLDebug( |
2395 | 0 | "GeoJSON", |
2396 | 0 | "Non conformant Feature object. Missing \'geometry\' member."); |
2397 | 0 | } |
2398 | 0 | } |
2399 | |
|
2400 | 0 | return poFeature; |
2401 | 0 | } |
2402 | | |
2403 | | /************************************************************************/ |
2404 | | /* Extent getters */ |
2405 | | /************************************************************************/ |
2406 | | |
2407 | | bool OGRGeoJSONBaseReader::ExtentRead() const |
2408 | 0 | { |
2409 | 0 | return m_bExtentRead; |
2410 | 0 | } |
2411 | | |
2412 | | OGREnvelope3D OGRGeoJSONBaseReader::GetExtent3D() const |
2413 | 0 | { |
2414 | 0 | return m_oEnvelope3D; |
2415 | 0 | } |
2416 | | |
2417 | | /************************************************************************/ |
2418 | | /* ReadFeatureCollection() */ |
2419 | | /************************************************************************/ |
2420 | | |
2421 | | void OGRGeoJSONReader::ReadFeatureCollection(OGRGeoJSONLayer *poLayer, |
2422 | | json_object *poObj) |
2423 | 0 | { |
2424 | 0 | json_object *poObjFeatures = OGRGeoJSONFindMemberByName(poObj, "features"); |
2425 | 0 | if (nullptr == poObjFeatures) |
2426 | 0 | { |
2427 | 0 | CPLError(CE_Failure, CPLE_AppDefined, |
2428 | 0 | "Invalid FeatureCollection object. " |
2429 | 0 | "Missing \'features\' member."); |
2430 | 0 | return; |
2431 | 0 | } |
2432 | | |
2433 | 0 | if (json_type_array == json_object_get_type(poObjFeatures)) |
2434 | 0 | { |
2435 | 0 | const auto nFeatures = json_object_array_length(poObjFeatures); |
2436 | 0 | for (auto i = decltype(nFeatures){0}; i < nFeatures; ++i) |
2437 | 0 | { |
2438 | 0 | json_object *poObjFeature = |
2439 | 0 | json_object_array_get_idx(poObjFeatures, i); |
2440 | 0 | auto poFeature = std::unique_ptr<OGRFeature>( |
2441 | 0 | ReadFeature(poLayer, poObjFeature, nullptr)); |
2442 | 0 | AddFeature(poLayer, std::move(poFeature)); |
2443 | 0 | } |
2444 | 0 | } |
2445 | | |
2446 | | // Collect top objects except 'type' and the 'features' array. |
2447 | 0 | if (bStoreNativeData_) |
2448 | 0 | { |
2449 | 0 | json_object_iter it; |
2450 | 0 | it.key = nullptr; |
2451 | 0 | it.val = nullptr; |
2452 | 0 | it.entry = nullptr; |
2453 | 0 | CPLString osNativeData; |
2454 | 0 | json_object_object_foreachC(poObj, it) |
2455 | 0 | { |
2456 | 0 | if (strcmp(it.key, "type") == 0 || strcmp(it.key, "features") == 0) |
2457 | 0 | { |
2458 | 0 | continue; |
2459 | 0 | } |
2460 | 0 | if (osNativeData.empty()) |
2461 | 0 | osNativeData = "{ "; |
2462 | 0 | else |
2463 | 0 | osNativeData += ", "; |
2464 | 0 | json_object *poKey = json_object_new_string(it.key); |
2465 | 0 | osNativeData += json_object_to_json_string(poKey); |
2466 | 0 | json_object_put(poKey); |
2467 | 0 | osNativeData += ": "; |
2468 | 0 | osNativeData += json_object_to_json_string(it.val); |
2469 | 0 | } |
2470 | 0 | if (osNativeData.empty()) |
2471 | 0 | { |
2472 | 0 | osNativeData = "{ "; |
2473 | 0 | } |
2474 | 0 | osNativeData += " }"; |
2475 | |
|
2476 | 0 | osNativeData = "NATIVE_DATA=" + osNativeData; |
2477 | |
|
2478 | 0 | const char *const apszMetadata[] = { |
2479 | 0 | osNativeData.c_str(), "NATIVE_MEDIA_TYPE=application/geo+json", |
2480 | 0 | nullptr}; |
2481 | |
|
2482 | 0 | poLayer->SetMetadata(apszMetadata, "NATIVE_DATA"); |
2483 | 0 | } |
2484 | 0 | } |
2485 | | |
2486 | | /************************************************************************/ |
2487 | | /* OGRGeoJSONGetExtent3D() */ |
2488 | | /************************************************************************/ |
2489 | | |
2490 | | bool OGRGeoJSONGetExtent3D(json_object *poObj, OGREnvelope3D *poEnvelope) |
2491 | 0 | { |
2492 | 0 | if (!poEnvelope || !poObj) |
2493 | 0 | { |
2494 | 0 | return false; |
2495 | 0 | } |
2496 | | |
2497 | | // poObjCoords can be an array of arrays, this lambda function will |
2498 | | // recursively parse the array |
2499 | 0 | std::function<bool(json_object *, OGREnvelope3D *)> fParseCoords; |
2500 | 0 | fParseCoords = [&fParseCoords](json_object *poObjCoordsIn, |
2501 | 0 | OGREnvelope3D *poEnvelopeIn) -> bool |
2502 | 0 | { |
2503 | 0 | if (json_type_array == json_object_get_type(poObjCoordsIn)) |
2504 | 0 | { |
2505 | 0 | const auto nItems = json_object_array_length(poObjCoordsIn); |
2506 | |
|
2507 | 0 | double dXVal = std::numeric_limits<double>::quiet_NaN(); |
2508 | 0 | double dYVal = std::numeric_limits<double>::quiet_NaN(); |
2509 | 0 | double dZVal = std::numeric_limits<double>::quiet_NaN(); |
2510 | |
|
2511 | 0 | for (auto i = decltype(nItems){0}; i < nItems; ++i) |
2512 | 0 | { |
2513 | | |
2514 | | // Get the i element |
2515 | 0 | json_object *poObjCoordsElement = |
2516 | 0 | json_object_array_get_idx(poObjCoordsIn, i); |
2517 | |
|
2518 | 0 | const json_type eType{json_object_get_type(poObjCoordsElement)}; |
2519 | | |
2520 | | // if it is an array, recurse |
2521 | 0 | if (json_type_array == eType) |
2522 | 0 | { |
2523 | 0 | if (!fParseCoords(poObjCoordsElement, poEnvelopeIn)) |
2524 | 0 | { |
2525 | 0 | return false; |
2526 | 0 | } |
2527 | 0 | } |
2528 | 0 | else if (json_type_double == eType || json_type_int == eType) |
2529 | 0 | { |
2530 | 0 | switch (i) |
2531 | 0 | { |
2532 | 0 | case 0: |
2533 | 0 | { |
2534 | 0 | dXVal = json_object_get_double(poObjCoordsElement); |
2535 | 0 | break; |
2536 | 0 | } |
2537 | 0 | case 1: |
2538 | 0 | { |
2539 | 0 | dYVal = json_object_get_double(poObjCoordsElement); |
2540 | 0 | break; |
2541 | 0 | } |
2542 | 0 | case 2: |
2543 | 0 | { |
2544 | 0 | dZVal = json_object_get_double(poObjCoordsElement); |
2545 | 0 | break; |
2546 | 0 | } |
2547 | 0 | default: |
2548 | 0 | return false; |
2549 | 0 | } |
2550 | 0 | } |
2551 | 0 | else |
2552 | 0 | { |
2553 | 0 | return false; |
2554 | 0 | } |
2555 | 0 | } |
2556 | | |
2557 | 0 | if (!std::isnan(dXVal) && !std::isnan(dYVal)) |
2558 | 0 | { |
2559 | 0 | if (std::isnan(dZVal)) |
2560 | 0 | { |
2561 | 0 | static_cast<OGREnvelope *>(poEnvelopeIn) |
2562 | 0 | ->Merge(dXVal, dYVal); |
2563 | 0 | } |
2564 | 0 | else |
2565 | 0 | { |
2566 | 0 | poEnvelopeIn->Merge(dXVal, dYVal, dZVal); |
2567 | 0 | } |
2568 | 0 | } |
2569 | |
|
2570 | 0 | return true; |
2571 | 0 | } |
2572 | 0 | else |
2573 | 0 | { |
2574 | 0 | return false; |
2575 | 0 | } |
2576 | 0 | }; |
2577 | | |
2578 | | // This function looks for "coordinates" and for "geometries" to handle |
2579 | | // geometry collections. It will recurse on itself to handle nested geometry. |
2580 | 0 | std::function<bool(json_object *, OGREnvelope3D *)> fParseGeometry; |
2581 | 0 | fParseGeometry = [&fParseGeometry, |
2582 | 0 | &fParseCoords](json_object *poObjIn, |
2583 | 0 | OGREnvelope3D *poEnvelopeIn) -> bool |
2584 | 0 | { |
2585 | | // Get the "coordinates" array from the JSON object |
2586 | 0 | json_object *poObjCoords = |
2587 | 0 | OGRGeoJSONFindMemberByName(poObjIn, "coordinates"); |
2588 | | |
2589 | | // Return if found and not an array |
2590 | 0 | if (poObjCoords && json_object_get_type(poObjCoords) != json_type_array) |
2591 | 0 | { |
2592 | 0 | return false; |
2593 | 0 | } |
2594 | 0 | else if (poObjCoords) |
2595 | 0 | { |
2596 | 0 | return fParseCoords(poObjCoords, poEnvelopeIn); |
2597 | 0 | } |
2598 | | |
2599 | | // Try "geometries" |
2600 | 0 | if (!poObjCoords) |
2601 | 0 | { |
2602 | 0 | poObjCoords = OGRGeoJSONFindMemberByName(poObjIn, "geometries"); |
2603 | 0 | } |
2604 | | |
2605 | | // Return if not found or not an array |
2606 | 0 | if (!poObjCoords || |
2607 | 0 | json_object_get_type(poObjCoords) != json_type_array) |
2608 | 0 | { |
2609 | 0 | return false; |
2610 | 0 | } |
2611 | 0 | else |
2612 | 0 | { |
2613 | | // Loop thgrough the geometries |
2614 | 0 | const auto nItems = json_object_array_length(poObjCoords); |
2615 | 0 | for (auto i = decltype(nItems){0}; i < nItems; ++i) |
2616 | 0 | { |
2617 | 0 | json_object *poObjGeometry = |
2618 | 0 | json_object_array_get_idx(poObjCoords, i); |
2619 | | |
2620 | | // Recurse |
2621 | 0 | if (!fParseGeometry(poObjGeometry, poEnvelopeIn)) |
2622 | 0 | { |
2623 | 0 | return false; |
2624 | 0 | } |
2625 | 0 | } |
2626 | 0 | return true; |
2627 | 0 | } |
2628 | 0 | }; |
2629 | |
|
2630 | 0 | return fParseGeometry(poObj, poEnvelope); |
2631 | 0 | } |