/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 | char *apszMetadata[3] = { |
607 | 0 | const_cast<char *>(osNativeData.c_str()), |
608 | 0 | const_cast<char *>( |
609 | 0 | "NATIVE_MEDIA_TYPE=application/vnd.geo+json"), |
610 | 0 | nullptr}; |
611 | |
|
612 | 0 | poLayer->SetMetadata(apszMetadata, "NATIVE_DATA"); |
613 | 0 | } |
614 | |
|
615 | 0 | poGJObject_ = poRootObj; |
616 | 0 | } |
617 | |
|
618 | 0 | fp_ = fp; |
619 | 0 | poDS->AddLayer(poLayer); |
620 | 0 | return true; |
621 | 0 | } |
622 | | |
623 | | /************************************************************************/ |
624 | | /* SkipPrologEpilogAndUpdateJSonPLikeWrapper() */ |
625 | | /************************************************************************/ |
626 | | |
627 | | size_t OGRGeoJSONReader::SkipPrologEpilogAndUpdateJSonPLikeWrapper(size_t nRead) |
628 | 0 | { |
629 | 0 | size_t nSkip = 0; |
630 | 0 | if (nRead >= 3 && pabyBuffer_[0] == 0xEF && pabyBuffer_[1] == 0xBB && |
631 | 0 | pabyBuffer_[2] == 0xBF) |
632 | 0 | { |
633 | 0 | CPLDebug("GeoJSON", "Skip UTF-8 BOM"); |
634 | 0 | nSkip += 3; |
635 | 0 | } |
636 | |
|
637 | 0 | const char *const apszPrefix[] = {"loadGeoJSON(", "jsonp("}; |
638 | 0 | for (size_t i = 0; i < CPL_ARRAYSIZE(apszPrefix); i++) |
639 | 0 | { |
640 | 0 | if (nRead >= nSkip + strlen(apszPrefix[i]) && |
641 | 0 | memcmp(pabyBuffer_ + nSkip, apszPrefix[i], strlen(apszPrefix[i])) == |
642 | 0 | 0) |
643 | 0 | { |
644 | 0 | nSkip += strlen(apszPrefix[i]); |
645 | 0 | bJSonPLikeWrapper_ = true; |
646 | 0 | break; |
647 | 0 | } |
648 | 0 | } |
649 | |
|
650 | 0 | return nSkip; |
651 | 0 | } |
652 | | |
653 | | /************************************************************************/ |
654 | | /* ResetReading() */ |
655 | | /************************************************************************/ |
656 | | |
657 | | void OGRGeoJSONReader::ResetReading() |
658 | 0 | { |
659 | 0 | CPLAssert(fp_); |
660 | 0 | if (poStreamingParser_) |
661 | 0 | bOriginalIdModifiedEmitted_ = |
662 | 0 | poStreamingParser_->GetOriginalIdModifiedEmitted(); |
663 | 0 | delete poStreamingParser_; |
664 | 0 | poStreamingParser_ = nullptr; |
665 | 0 | } |
666 | | |
667 | | /************************************************************************/ |
668 | | /* GetNextFeature() */ |
669 | | /************************************************************************/ |
670 | | |
671 | | OGRFeature *OGRGeoJSONReader::GetNextFeature(OGRGeoJSONLayer *poLayer) |
672 | 0 | { |
673 | 0 | CPLAssert(fp_); |
674 | 0 | if (poStreamingParser_ == nullptr) |
675 | 0 | { |
676 | 0 | poStreamingParser_ = new OGRGeoJSONReaderStreamingParser( |
677 | 0 | *this, poLayer, false, bStoreNativeData_); |
678 | 0 | poStreamingParser_->SetOriginalIdModifiedEmitted( |
679 | 0 | bOriginalIdModifiedEmitted_); |
680 | 0 | VSIFSeekL(fp_, 0, SEEK_SET); |
681 | 0 | bFirstSeg_ = true; |
682 | 0 | bJSonPLikeWrapper_ = false; |
683 | 0 | } |
684 | |
|
685 | 0 | OGRFeature *poFeat = poStreamingParser_->GetNextFeature(); |
686 | 0 | if (poFeat) |
687 | 0 | return poFeat; |
688 | | |
689 | 0 | while (true) |
690 | 0 | { |
691 | 0 | size_t nRead = VSIFReadL(pabyBuffer_, 1, nBufferSize_, fp_); |
692 | 0 | const bool bFinished = nRead < nBufferSize_; |
693 | 0 | size_t nSkip = 0; |
694 | 0 | if (bFirstSeg_) |
695 | 0 | { |
696 | 0 | bFirstSeg_ = false; |
697 | 0 | nSkip = SkipPrologEpilogAndUpdateJSonPLikeWrapper(nRead); |
698 | 0 | } |
699 | 0 | if (bFinished && bJSonPLikeWrapper_ && nRead > nSkip) |
700 | 0 | nRead--; |
701 | 0 | if (!poStreamingParser_->Parse( |
702 | 0 | std::string_view( |
703 | 0 | reinterpret_cast<const char *>(pabyBuffer_ + nSkip), |
704 | 0 | nRead - nSkip), |
705 | 0 | bFinished) || |
706 | 0 | poStreamingParser_->ExceptionOccurred()) |
707 | 0 | { |
708 | 0 | break; |
709 | 0 | } |
710 | | |
711 | 0 | poFeat = poStreamingParser_->GetNextFeature(); |
712 | 0 | if (poFeat) |
713 | 0 | return poFeat; |
714 | | |
715 | 0 | if (bFinished) |
716 | 0 | break; |
717 | 0 | } |
718 | | |
719 | 0 | return nullptr; |
720 | 0 | } |
721 | | |
722 | | /************************************************************************/ |
723 | | /* GetFeature() */ |
724 | | /************************************************************************/ |
725 | | |
726 | | OGRFeature *OGRGeoJSONReader::GetFeature(OGRGeoJSONLayer *poLayer, GIntBig nFID) |
727 | 0 | { |
728 | 0 | CPLAssert(fp_); |
729 | | |
730 | 0 | if (oMapFIDToOffsetSize_.empty()) |
731 | 0 | { |
732 | 0 | CPLDebug("GeoJSON", |
733 | 0 | "Establishing index to features for first GetFeature() call"); |
734 | |
|
735 | 0 | if (poStreamingParser_) |
736 | 0 | bOriginalIdModifiedEmitted_ = |
737 | 0 | poStreamingParser_->GetOriginalIdModifiedEmitted(); |
738 | 0 | delete poStreamingParser_; |
739 | 0 | poStreamingParser_ = nullptr; |
740 | |
|
741 | 0 | OGRGeoJSONReaderStreamingParser oParser(*this, poLayer, false, |
742 | 0 | bStoreNativeData_); |
743 | 0 | oParser.SetOriginalIdModifiedEmitted(bOriginalIdModifiedEmitted_); |
744 | 0 | VSIFSeekL(fp_, 0, SEEK_SET); |
745 | 0 | bFirstSeg_ = true; |
746 | 0 | bJSonPLikeWrapper_ = false; |
747 | 0 | vsi_l_offset nCurOffset = 0; |
748 | 0 | vsi_l_offset nFeatureOffset = 0; |
749 | 0 | while (true) |
750 | 0 | { |
751 | 0 | size_t nRead = VSIFReadL(pabyBuffer_, 1, nBufferSize_, fp_); |
752 | 0 | const bool bFinished = nRead < nBufferSize_; |
753 | 0 | size_t nSkip = 0; |
754 | 0 | if (bFirstSeg_) |
755 | 0 | { |
756 | 0 | bFirstSeg_ = false; |
757 | 0 | nSkip = SkipPrologEpilogAndUpdateJSonPLikeWrapper(nRead); |
758 | 0 | } |
759 | 0 | if (bFinished && bJSonPLikeWrapper_ && nRead > nSkip) |
760 | 0 | nRead--; |
761 | 0 | auto pszPtr = reinterpret_cast<const char *>(pabyBuffer_ + nSkip); |
762 | 0 | for (size_t i = 0; i < nRead - nSkip; i++) |
763 | 0 | { |
764 | 0 | oParser.ResetFeatureDetectionState(); |
765 | 0 | if (!oParser.Parse(std::string_view(pszPtr + i, 1), |
766 | 0 | bFinished && (i + 1 == nRead - nSkip)) || |
767 | 0 | oParser.ExceptionOccurred()) |
768 | 0 | { |
769 | 0 | return nullptr; |
770 | 0 | } |
771 | 0 | if (oParser.IsStartFeature()) |
772 | 0 | { |
773 | 0 | nFeatureOffset = nCurOffset + i; |
774 | 0 | } |
775 | 0 | else if (oParser.IsEndFeature()) |
776 | 0 | { |
777 | 0 | vsi_l_offset nFeatureSize = |
778 | 0 | (nCurOffset + i) - nFeatureOffset + 1; |
779 | 0 | auto poFeat = oParser.GetNextFeature(); |
780 | 0 | if (poFeat) |
781 | 0 | { |
782 | 0 | const GIntBig nThisFID = poFeat->GetFID(); |
783 | 0 | if (!cpl::contains(oMapFIDToOffsetSize_, nThisFID)) |
784 | 0 | { |
785 | 0 | oMapFIDToOffsetSize_[nThisFID] = |
786 | 0 | std::pair<vsi_l_offset, vsi_l_offset>( |
787 | 0 | nFeatureOffset, nFeatureSize); |
788 | 0 | } |
789 | 0 | delete poFeat; |
790 | 0 | } |
791 | 0 | } |
792 | 0 | } |
793 | | |
794 | 0 | if (bFinished) |
795 | 0 | break; |
796 | 0 | nCurOffset += nRead; |
797 | 0 | } |
798 | | |
799 | 0 | bOriginalIdModifiedEmitted_ = oParser.GetOriginalIdModifiedEmitted(); |
800 | 0 | } |
801 | | |
802 | 0 | const auto oIter = oMapFIDToOffsetSize_.find(nFID); |
803 | 0 | if (oIter == oMapFIDToOffsetSize_.end()) |
804 | 0 | { |
805 | 0 | return nullptr; |
806 | 0 | } |
807 | | |
808 | 0 | VSIFSeekL(fp_, oIter->second.first, SEEK_SET); |
809 | 0 | if (oIter->second.second > 1000 * 1000 * 1000) |
810 | 0 | { |
811 | 0 | return nullptr; |
812 | 0 | } |
813 | 0 | size_t nSize = static_cast<size_t>(oIter->second.second); |
814 | 0 | char *pszBuffer = static_cast<char *>(VSIMalloc(nSize + 1)); |
815 | 0 | if (!pszBuffer) |
816 | 0 | { |
817 | 0 | return nullptr; |
818 | 0 | } |
819 | 0 | if (VSIFReadL(pszBuffer, 1, nSize, fp_) != nSize) |
820 | 0 | { |
821 | 0 | VSIFree(pszBuffer); |
822 | 0 | return nullptr; |
823 | 0 | } |
824 | 0 | pszBuffer[nSize] = 0; |
825 | 0 | json_object *poObj = nullptr; |
826 | 0 | if (!OGRJSonParse(pszBuffer, &poObj)) |
827 | 0 | { |
828 | 0 | VSIFree(pszBuffer); |
829 | 0 | return nullptr; |
830 | 0 | } |
831 | | |
832 | 0 | OGRFeature *poFeat = ReadFeature(poLayer, poObj, pszBuffer); |
833 | 0 | json_object_put(poObj); |
834 | 0 | VSIFree(pszBuffer); |
835 | 0 | if (!poFeat) |
836 | 0 | { |
837 | 0 | return nullptr; |
838 | 0 | } |
839 | 0 | poFeat->SetFID(nFID); |
840 | 0 | return poFeat; |
841 | 0 | } |
842 | | |
843 | | /************************************************************************/ |
844 | | /* IngestAll() */ |
845 | | /************************************************************************/ |
846 | | |
847 | | bool OGRGeoJSONReader::IngestAll(OGRGeoJSONLayer *poLayer) |
848 | 0 | { |
849 | 0 | const vsi_l_offset nRAM = |
850 | 0 | static_cast<vsi_l_offset>(CPLGetUsablePhysicalRAM()) / 3 * 4; |
851 | 0 | if (nRAM && nTotalOGRFeatureMemEstimate_ > nRAM) |
852 | 0 | { |
853 | 0 | CPLError(CE_Failure, CPLE_OutOfMemory, |
854 | 0 | "Not enough memory to ingest all the layer: " CPL_FRMT_GUIB |
855 | 0 | " available, " CPL_FRMT_GUIB " needed", |
856 | 0 | nRAM, nTotalOGRFeatureMemEstimate_); |
857 | 0 | return false; |
858 | 0 | } |
859 | | |
860 | 0 | CPLDebug("GeoJSON", |
861 | 0 | "Total memory estimated for ingestion: " CPL_FRMT_GUIB " bytes", |
862 | 0 | nTotalOGRFeatureMemEstimate_); |
863 | |
|
864 | 0 | ResetReading(); |
865 | 0 | GIntBig nCounter = 0; |
866 | 0 | while (true) |
867 | 0 | { |
868 | 0 | OGRFeature *poFeature = GetNextFeature(poLayer); |
869 | 0 | if (poFeature == nullptr) |
870 | 0 | break; |
871 | 0 | poLayer->AddFeature(poFeature); |
872 | 0 | delete poFeature; |
873 | 0 | nCounter++; |
874 | 0 | if (((nCounter % 10000) == 0 || nCounter == nTotalFeatureCount_) && |
875 | 0 | nTotalFeatureCount_ > 0) |
876 | 0 | { |
877 | 0 | CPLDebug("GeoJSON", "Ingestion at %.02f %%", |
878 | 0 | 100.0 * nCounter / nTotalFeatureCount_); |
879 | 0 | } |
880 | 0 | } |
881 | 0 | return true; |
882 | 0 | } |
883 | | |
884 | | /************************************************************************/ |
885 | | /* ReadLayer */ |
886 | | /************************************************************************/ |
887 | | |
888 | | void OGRGeoJSONReader::ReadLayer(OGRGeoJSONDataSource *poDS, |
889 | | const char *pszName, json_object *poObj) |
890 | 0 | { |
891 | 0 | GeoJSONObject::Type objType = OGRGeoJSONGetType(poObj); |
892 | 0 | if (objType == GeoJSONObject::eUnknown) |
893 | 0 | { |
894 | | // Check if the object contains key:value pairs where value |
895 | | // is a standard GeoJSON object. In which case, use key as the layer |
896 | | // name. |
897 | 0 | if (json_type_object == json_object_get_type(poObj)) |
898 | 0 | { |
899 | 0 | json_object_iter it; |
900 | 0 | it.key = nullptr; |
901 | 0 | it.val = nullptr; |
902 | 0 | it.entry = nullptr; |
903 | 0 | json_object_object_foreachC(poObj, it) |
904 | 0 | { |
905 | 0 | objType = OGRGeoJSONGetType(it.val); |
906 | 0 | if (objType != GeoJSONObject::eUnknown) |
907 | 0 | ReadLayer(poDS, it.key, it.val); |
908 | 0 | } |
909 | 0 | } |
910 | | |
911 | | // CPLError(CE_Failure, CPLE_AppDefined, |
912 | | // "Unrecognized GeoJSON structure."); |
913 | |
|
914 | 0 | return; |
915 | 0 | } |
916 | | |
917 | 0 | CPLErrorReset(); |
918 | | |
919 | | // Figure out layer name |
920 | 0 | std::string osName; |
921 | 0 | if (pszName) |
922 | 0 | { |
923 | 0 | osName = pszName; |
924 | 0 | } |
925 | 0 | else |
926 | 0 | { |
927 | 0 | if (GeoJSONObject::eFeatureCollection == objType) |
928 | 0 | { |
929 | 0 | json_object *poName = CPL_json_object_object_get(poObj, "name"); |
930 | 0 | if (poName != nullptr && |
931 | 0 | json_object_get_type(poName) == json_type_string) |
932 | 0 | { |
933 | 0 | pszName = json_object_get_string(poName); |
934 | 0 | } |
935 | 0 | } |
936 | 0 | if (pszName) |
937 | 0 | { |
938 | 0 | osName = pszName; |
939 | 0 | } |
940 | 0 | else |
941 | 0 | { |
942 | 0 | const char *pszDesc = poDS->GetDescription(); |
943 | 0 | if (strchr(pszDesc, '?') == nullptr && |
944 | 0 | strchr(pszDesc, '{') == nullptr) |
945 | 0 | { |
946 | 0 | osName = CPLGetBasenameSafe(pszDesc); |
947 | 0 | } |
948 | 0 | } |
949 | 0 | } |
950 | 0 | osName = OGRGeoJSONLayer::GetValidLayerName(osName.c_str()); |
951 | |
|
952 | 0 | OGRGeoJSONLayer *poLayer = new OGRGeoJSONLayer( |
953 | 0 | osName.c_str(), nullptr, OGRGeoJSONLayer::DefaultGeometryType, poDS, |
954 | 0 | nullptr); |
955 | |
|
956 | 0 | OGRSpatialReference *poSRS = OGRGeoJSONReadSpatialReference(poObj); |
957 | 0 | bool bDefaultSRS = false; |
958 | 0 | if (poSRS == nullptr) |
959 | 0 | { |
960 | | // If there is none defined, we use 4326 / 4979. |
961 | 0 | poSRS = new OGRSpatialReference(); |
962 | 0 | bDefaultSRS = true; |
963 | 0 | } |
964 | 0 | { |
965 | 0 | auto poGeomFieldDefn = poLayer->GetLayerDefn()->GetGeomFieldDefn(0); |
966 | 0 | whileUnsealing(poGeomFieldDefn)->SetSpatialRef(poSRS); |
967 | 0 | } |
968 | |
|
969 | 0 | if (!GenerateLayerDefn(poLayer, poObj)) |
970 | 0 | { |
971 | 0 | CPLError(CE_Failure, CPLE_AppDefined, |
972 | 0 | "Layer schema generation failed."); |
973 | |
|
974 | 0 | delete poLayer; |
975 | 0 | poSRS->Release(); |
976 | 0 | return; |
977 | 0 | } |
978 | | |
979 | 0 | if (GeoJSONObject::eFeatureCollection == objType) |
980 | 0 | { |
981 | 0 | json_object *poDescription = |
982 | 0 | CPL_json_object_object_get(poObj, "description"); |
983 | 0 | if (poDescription != nullptr && |
984 | 0 | json_object_get_type(poDescription) == json_type_string) |
985 | 0 | { |
986 | 0 | poLayer->SetMetadataItem("DESCRIPTION", |
987 | 0 | json_object_get_string(poDescription)); |
988 | 0 | } |
989 | |
|
990 | 0 | SetCoordinatePrecision(poObj, poLayer); |
991 | 0 | } |
992 | | |
993 | | /* -------------------------------------------------------------------- */ |
994 | | /* Translate single geometry-only Feature object. */ |
995 | | /* -------------------------------------------------------------------- */ |
996 | |
|
997 | 0 | if (GeoJSONObject::ePoint == objType || |
998 | 0 | GeoJSONObject::eMultiPoint == objType || |
999 | 0 | GeoJSONObject::eLineString == objType || |
1000 | 0 | GeoJSONObject::eMultiLineString == objType || |
1001 | 0 | GeoJSONObject::ePolygon == objType || |
1002 | 0 | GeoJSONObject::eMultiPolygon == objType || |
1003 | 0 | GeoJSONObject::eGeometryCollection == objType) |
1004 | 0 | { |
1005 | 0 | OGRGeometry *poGeometry = ReadGeometry(poObj, poLayer->GetSpatialRef()); |
1006 | 0 | if (!AddFeature(poLayer, poGeometry)) |
1007 | 0 | { |
1008 | 0 | CPLDebug("GeoJSON", "Translation of single geometry failed."); |
1009 | 0 | delete poLayer; |
1010 | 0 | poSRS->Release(); |
1011 | 0 | return; |
1012 | 0 | } |
1013 | 0 | } |
1014 | | /* -------------------------------------------------------------------- */ |
1015 | | /* Translate single but complete Feature object. */ |
1016 | | /* -------------------------------------------------------------------- */ |
1017 | 0 | else if (GeoJSONObject::eFeature == objType) |
1018 | 0 | { |
1019 | 0 | OGRFeature *poFeature = ReadFeature(poLayer, poObj, nullptr); |
1020 | 0 | AddFeature(poLayer, poFeature); |
1021 | 0 | } |
1022 | | /* -------------------------------------------------------------------- */ |
1023 | | /* Translate multi-feature FeatureCollection object. */ |
1024 | | /* -------------------------------------------------------------------- */ |
1025 | 0 | else if (GeoJSONObject::eFeatureCollection == objType) |
1026 | 0 | { |
1027 | 0 | ReadFeatureCollection(poLayer, poObj); |
1028 | |
|
1029 | 0 | if (CPLGetLastErrorType() != CE_Warning) |
1030 | 0 | CPLErrorReset(); |
1031 | 0 | } |
1032 | | |
1033 | 0 | poLayer->DetectGeometryType(); |
1034 | |
|
1035 | 0 | if (bDefaultSRS && poLayer->GetGeomType() != wkbNone) |
1036 | 0 | { |
1037 | 0 | if (OGR_GT_HasZ(poLayer->GetGeomType())) |
1038 | 0 | poSRS->importFromEPSG(4979); |
1039 | 0 | else |
1040 | 0 | poSRS->SetFromUserInput(SRS_WKT_WGS84_LAT_LONG); |
1041 | 0 | poSRS->SetAxisMappingStrategy(OAMS_TRADITIONAL_GIS_ORDER); |
1042 | 0 | } |
1043 | 0 | poSRS->Release(); |
1044 | |
|
1045 | 0 | poDS->AddLayer(poLayer); |
1046 | 0 | } |
1047 | | |
1048 | | /************************************************************************/ |
1049 | | /* GenerateLayerDefn() */ |
1050 | | /************************************************************************/ |
1051 | | |
1052 | | bool OGRGeoJSONReader::GenerateLayerDefn(OGRGeoJSONLayer *poLayer, |
1053 | | json_object *poGJObject) |
1054 | 0 | { |
1055 | 0 | CPLAssert(nullptr != poGJObject); |
1056 | 0 | CPLAssert(nullptr != poLayer->GetLayerDefn()); |
1057 | 0 | CPLAssert(0 == poLayer->GetLayerDefn()->GetFieldCount()); |
1058 | | |
1059 | 0 | if (bAttributesSkip_) |
1060 | 0 | return true; |
1061 | | |
1062 | | /* -------------------------------------------------------------------- */ |
1063 | | /* Scan all features and generate layer definition. */ |
1064 | | /* -------------------------------------------------------------------- */ |
1065 | 0 | bool bSuccess = true; |
1066 | |
|
1067 | 0 | std::map<std::string, int> oMapFieldNameToIdx; |
1068 | 0 | std::vector<std::unique_ptr<OGRFieldDefn>> apoFieldDefn; |
1069 | 0 | gdal::DirectedAcyclicGraph<int, std::string> dag; |
1070 | |
|
1071 | 0 | GeoJSONObject::Type objType = OGRGeoJSONGetType(poGJObject); |
1072 | 0 | if (GeoJSONObject::eFeature == objType) |
1073 | 0 | { |
1074 | 0 | bSuccess = GenerateFeatureDefn(oMapFieldNameToIdx, apoFieldDefn, dag, |
1075 | 0 | poLayer, poGJObject); |
1076 | 0 | } |
1077 | 0 | else if (GeoJSONObject::eFeatureCollection == objType) |
1078 | 0 | { |
1079 | 0 | json_object *poObjFeatures = |
1080 | 0 | OGRGeoJSONFindMemberByName(poGJObject, "features"); |
1081 | 0 | if (nullptr != poObjFeatures && |
1082 | 0 | json_type_array == json_object_get_type(poObjFeatures)) |
1083 | 0 | { |
1084 | 0 | const auto nFeatures = json_object_array_length(poObjFeatures); |
1085 | 0 | for (auto i = decltype(nFeatures){0}; i < nFeatures; ++i) |
1086 | 0 | { |
1087 | 0 | json_object *poObjFeature = |
1088 | 0 | json_object_array_get_idx(poObjFeatures, i); |
1089 | 0 | if (!GenerateFeatureDefn(oMapFieldNameToIdx, apoFieldDefn, dag, |
1090 | 0 | poLayer, poObjFeature)) |
1091 | 0 | { |
1092 | 0 | CPLDebug("GeoJSON", "Create feature schema failure."); |
1093 | 0 | bSuccess = false; |
1094 | 0 | } |
1095 | 0 | } |
1096 | 0 | } |
1097 | 0 | else |
1098 | 0 | { |
1099 | 0 | CPLError(CE_Failure, CPLE_AppDefined, |
1100 | 0 | "Invalid FeatureCollection object. " |
1101 | 0 | "Missing \'features\' member."); |
1102 | 0 | bSuccess = false; |
1103 | 0 | } |
1104 | 0 | } |
1105 | | |
1106 | | // Note: the current strategy will not produce stable output, depending |
1107 | | // on the order of features, if there are conflicting order / cycles. |
1108 | | // See https://github.com/OSGeo/gdal/pull/4552 for a number of potential |
1109 | | // resolutions if that has to be solved in the future. |
1110 | 0 | OGRFeatureDefn *poDefn = poLayer->GetLayerDefn(); |
1111 | 0 | const auto sortedFields = dag.getTopologicalOrdering(); |
1112 | 0 | CPLAssert(sortedFields.size() == apoFieldDefn.size()); |
1113 | 0 | { |
1114 | 0 | auto oTemporaryUnsealer(poDefn->GetTemporaryUnsealer()); |
1115 | 0 | for (int idx : sortedFields) |
1116 | 0 | { |
1117 | 0 | poDefn->AddFieldDefn(apoFieldDefn[idx].get()); |
1118 | 0 | } |
1119 | 0 | } |
1120 | |
|
1121 | 0 | CPLString osFIDColumn; |
1122 | 0 | FinalizeLayerDefn(poLayer, osFIDColumn); |
1123 | 0 | if (!osFIDColumn.empty()) |
1124 | 0 | poLayer->SetFIDColumn(osFIDColumn); |
1125 | |
|
1126 | 0 | return bSuccess; |
1127 | 0 | } |
1128 | | |
1129 | | /************************************************************************/ |
1130 | | /* FinalizeLayerDefn() */ |
1131 | | /************************************************************************/ |
1132 | | |
1133 | | void OGRGeoJSONBaseReader::FinalizeLayerDefn(OGRLayer *poLayer, |
1134 | | CPLString &osFIDColumn) |
1135 | 0 | { |
1136 | | /* -------------------------------------------------------------------- */ |
1137 | | /* Validate and add FID column if necessary. */ |
1138 | | /* -------------------------------------------------------------------- */ |
1139 | 0 | osFIDColumn.clear(); |
1140 | 0 | OGRFeatureDefn *poLayerDefn = poLayer->GetLayerDefn(); |
1141 | 0 | CPLAssert(nullptr != poLayerDefn); |
1142 | | |
1143 | 0 | whileUnsealing(poLayerDefn)->SetGeomType(m_eLayerGeomType); |
1144 | |
|
1145 | 0 | if (m_bNeedFID64) |
1146 | 0 | { |
1147 | 0 | poLayer->SetMetadataItem(OLMD_FID64, "YES"); |
1148 | 0 | } |
1149 | |
|
1150 | 0 | if (!bFeatureLevelIdAsFID_) |
1151 | 0 | { |
1152 | 0 | const int idx = poLayerDefn->GetFieldIndexCaseSensitive("id"); |
1153 | 0 | if (idx >= 0) |
1154 | 0 | { |
1155 | 0 | OGRFieldDefn *poFDefn = poLayerDefn->GetFieldDefn(idx); |
1156 | 0 | if (poFDefn->GetType() == OFTInteger || |
1157 | 0 | poFDefn->GetType() == OFTInteger64) |
1158 | 0 | { |
1159 | 0 | osFIDColumn = poLayerDefn->GetFieldDefn(idx)->GetNameRef(); |
1160 | 0 | } |
1161 | 0 | } |
1162 | 0 | } |
1163 | 0 | } |
1164 | | |
1165 | | /************************************************************************/ |
1166 | | /* OGRGeoJSONReaderAddOrUpdateField() */ |
1167 | | /************************************************************************/ |
1168 | | |
1169 | | void OGRGeoJSONReaderAddOrUpdateField( |
1170 | | std::vector<int> &retIndices, |
1171 | | std::map<std::string, int> &oMapFieldNameToIdx, |
1172 | | std::vector<std::unique_ptr<OGRFieldDefn>> &apoFieldDefn, |
1173 | | const char *pszKey, json_object *poVal, bool bFlattenNestedAttributes, |
1174 | | char chNestedAttributeSeparator, bool bArrayAsString, bool bDateAsString, |
1175 | | std::set<int> &aoSetUndeterminedTypeFields) |
1176 | 0 | { |
1177 | 0 | const auto jType = json_object_get_type(poVal); |
1178 | 0 | if (bFlattenNestedAttributes && poVal != nullptr && |
1179 | 0 | jType == json_type_object) |
1180 | 0 | { |
1181 | 0 | json_object_iter it; |
1182 | 0 | it.key = nullptr; |
1183 | 0 | it.val = nullptr; |
1184 | 0 | it.entry = nullptr; |
1185 | 0 | json_object_object_foreachC(poVal, it) |
1186 | 0 | { |
1187 | 0 | char szSeparator[2] = {chNestedAttributeSeparator, '\0'}; |
1188 | |
|
1189 | 0 | CPLString osAttrName( |
1190 | 0 | CPLSPrintf("%s%s%s", pszKey, szSeparator, it.key)); |
1191 | 0 | if (it.val != nullptr && |
1192 | 0 | json_object_get_type(it.val) == json_type_object) |
1193 | 0 | { |
1194 | 0 | OGRGeoJSONReaderAddOrUpdateField( |
1195 | 0 | retIndices, oMapFieldNameToIdx, apoFieldDefn, osAttrName, |
1196 | 0 | it.val, true, chNestedAttributeSeparator, bArrayAsString, |
1197 | 0 | bDateAsString, aoSetUndeterminedTypeFields); |
1198 | 0 | } |
1199 | 0 | else |
1200 | 0 | { |
1201 | 0 | OGRGeoJSONReaderAddOrUpdateField( |
1202 | 0 | retIndices, oMapFieldNameToIdx, apoFieldDefn, osAttrName, |
1203 | 0 | it.val, false, 0, bArrayAsString, bDateAsString, |
1204 | 0 | aoSetUndeterminedTypeFields); |
1205 | 0 | } |
1206 | 0 | } |
1207 | 0 | return; |
1208 | 0 | } |
1209 | | |
1210 | 0 | const auto oMapFieldNameToIdxIter = oMapFieldNameToIdx.find(pszKey); |
1211 | 0 | if (oMapFieldNameToIdxIter == oMapFieldNameToIdx.end()) |
1212 | 0 | { |
1213 | 0 | OGRFieldSubType eSubType; |
1214 | 0 | const OGRFieldType eType = |
1215 | 0 | GeoJSONPropertyToFieldType(poVal, eSubType, bArrayAsString); |
1216 | 0 | auto poFieldDefn = std::make_unique<OGRFieldDefn>(pszKey, eType); |
1217 | 0 | poFieldDefn->SetSubType(eSubType); |
1218 | 0 | if (eSubType == OFSTBoolean) |
1219 | 0 | poFieldDefn->SetWidth(1); |
1220 | 0 | if (poFieldDefn->GetType() == OFTString && !bDateAsString) |
1221 | 0 | { |
1222 | 0 | int nTZFlag = 0; |
1223 | 0 | poFieldDefn->SetType( |
1224 | 0 | GeoJSONStringPropertyToFieldType(poVal, nTZFlag)); |
1225 | 0 | poFieldDefn->SetTZFlag(nTZFlag); |
1226 | 0 | } |
1227 | 0 | apoFieldDefn.emplace_back(std::move(poFieldDefn)); |
1228 | 0 | const int nIndex = static_cast<int>(apoFieldDefn.size()) - 1; |
1229 | 0 | retIndices.emplace_back(nIndex); |
1230 | 0 | oMapFieldNameToIdx[pszKey] = nIndex; |
1231 | 0 | if (poVal == nullptr) |
1232 | 0 | aoSetUndeterminedTypeFields.insert(nIndex); |
1233 | 0 | } |
1234 | 0 | else if (poVal) |
1235 | 0 | { |
1236 | 0 | const int nIndex = oMapFieldNameToIdxIter->second; |
1237 | 0 | retIndices.emplace_back(nIndex); |
1238 | | // If there is a null value: do not update field definition. |
1239 | 0 | OGRFieldDefn *poFDefn = apoFieldDefn[nIndex].get(); |
1240 | 0 | const OGRFieldType eType = poFDefn->GetType(); |
1241 | 0 | const OGRFieldSubType eSubType = poFDefn->GetSubType(); |
1242 | 0 | OGRFieldSubType eNewSubType; |
1243 | 0 | OGRFieldType eNewType = |
1244 | 0 | GeoJSONPropertyToFieldType(poVal, eNewSubType, bArrayAsString); |
1245 | 0 | const bool bNewIsEmptyArray = |
1246 | 0 | (jType == json_type_array && json_object_array_length(poVal) == 0); |
1247 | 0 | if (cpl::contains(aoSetUndeterminedTypeFields, nIndex)) |
1248 | 0 | { |
1249 | 0 | poFDefn->SetSubType(OFSTNone); |
1250 | 0 | poFDefn->SetType(eNewType); |
1251 | 0 | if (poFDefn->GetType() == OFTString && !bDateAsString) |
1252 | 0 | { |
1253 | 0 | int nTZFlag = 0; |
1254 | 0 | poFDefn->SetType( |
1255 | 0 | GeoJSONStringPropertyToFieldType(poVal, nTZFlag)); |
1256 | 0 | poFDefn->SetTZFlag(nTZFlag); |
1257 | 0 | } |
1258 | 0 | poFDefn->SetSubType(eNewSubType); |
1259 | 0 | aoSetUndeterminedTypeFields.erase(nIndex); |
1260 | 0 | } |
1261 | 0 | else if (eType == OFTInteger) |
1262 | 0 | { |
1263 | 0 | if (eNewType == OFTInteger && eSubType == OFSTBoolean && |
1264 | 0 | eNewSubType != OFSTBoolean) |
1265 | 0 | { |
1266 | 0 | poFDefn->SetSubType(OFSTNone); |
1267 | 0 | } |
1268 | 0 | else if (eNewType == OFTInteger64 || eNewType == OFTReal || |
1269 | 0 | eNewType == OFTInteger64List || eNewType == OFTRealList || |
1270 | 0 | eNewType == OFTStringList) |
1271 | 0 | { |
1272 | 0 | poFDefn->SetSubType(OFSTNone); |
1273 | 0 | poFDefn->SetType(eNewType); |
1274 | 0 | } |
1275 | 0 | else if (eNewType == OFTIntegerList) |
1276 | 0 | { |
1277 | 0 | if (eSubType == OFSTBoolean && eNewSubType != OFSTBoolean) |
1278 | 0 | { |
1279 | 0 | poFDefn->SetSubType(OFSTNone); |
1280 | 0 | } |
1281 | 0 | poFDefn->SetType(eNewType); |
1282 | 0 | } |
1283 | 0 | else if (eNewType != OFTInteger) |
1284 | 0 | { |
1285 | 0 | poFDefn->SetSubType(OFSTNone); |
1286 | 0 | poFDefn->SetType(OFTString); |
1287 | 0 | poFDefn->SetSubType(OFSTJSON); |
1288 | 0 | } |
1289 | 0 | } |
1290 | 0 | else if (eType == OFTInteger64) |
1291 | 0 | { |
1292 | 0 | if (eNewType == OFTReal) |
1293 | 0 | { |
1294 | 0 | poFDefn->SetSubType(OFSTNone); |
1295 | 0 | poFDefn->SetType(eNewType); |
1296 | 0 | } |
1297 | 0 | else if (eNewType == OFTIntegerList || eNewType == OFTInteger64List) |
1298 | 0 | { |
1299 | 0 | poFDefn->SetSubType(OFSTNone); |
1300 | 0 | poFDefn->SetType(OFTInteger64List); |
1301 | 0 | } |
1302 | 0 | else if (eNewType == OFTRealList || eNewType == OFTStringList) |
1303 | 0 | { |
1304 | 0 | poFDefn->SetSubType(OFSTNone); |
1305 | 0 | poFDefn->SetType(eNewType); |
1306 | 0 | } |
1307 | 0 | else if (eNewType != OFTInteger && eNewType != OFTInteger64) |
1308 | 0 | { |
1309 | 0 | poFDefn->SetSubType(OFSTNone); |
1310 | 0 | poFDefn->SetType(OFTString); |
1311 | 0 | poFDefn->SetSubType(OFSTJSON); |
1312 | 0 | } |
1313 | 0 | } |
1314 | 0 | else if (eType == OFTReal) |
1315 | 0 | { |
1316 | 0 | if (eNewType == OFTIntegerList || eNewType == OFTInteger64List || |
1317 | 0 | eNewType == OFTRealList) |
1318 | 0 | { |
1319 | 0 | poFDefn->SetSubType(OFSTNone); |
1320 | 0 | poFDefn->SetType(OFTRealList); |
1321 | 0 | } |
1322 | 0 | else if (eNewType == OFTStringList) |
1323 | 0 | { |
1324 | 0 | poFDefn->SetSubType(OFSTNone); |
1325 | 0 | poFDefn->SetType(OFTStringList); |
1326 | 0 | } |
1327 | 0 | else if (eNewType != OFTInteger && eNewType != OFTInteger64 && |
1328 | 0 | eNewType != OFTReal) |
1329 | 0 | { |
1330 | 0 | poFDefn->SetSubType(OFSTNone); |
1331 | 0 | poFDefn->SetType(OFTString); |
1332 | 0 | poFDefn->SetSubType(OFSTJSON); |
1333 | 0 | } |
1334 | 0 | } |
1335 | 0 | else if (eType == OFTString) |
1336 | 0 | { |
1337 | 0 | if (eSubType == OFSTNone) |
1338 | 0 | { |
1339 | 0 | if (eNewType == OFTStringList) |
1340 | 0 | { |
1341 | 0 | poFDefn->SetType(OFTStringList); |
1342 | 0 | } |
1343 | 0 | else if (eNewType != OFTString) |
1344 | 0 | { |
1345 | 0 | poFDefn->SetSubType(OFSTJSON); |
1346 | 0 | } |
1347 | 0 | } |
1348 | 0 | } |
1349 | 0 | else if (eType == OFTIntegerList) |
1350 | 0 | { |
1351 | 0 | if (eNewType == OFTString) |
1352 | 0 | { |
1353 | 0 | if (!bNewIsEmptyArray) |
1354 | 0 | { |
1355 | 0 | poFDefn->SetSubType(OFSTNone); |
1356 | 0 | poFDefn->SetType(eNewType); |
1357 | 0 | poFDefn->SetSubType(OFSTJSON); |
1358 | 0 | } |
1359 | 0 | } |
1360 | 0 | else if (eNewType == OFTInteger64List || eNewType == OFTRealList || |
1361 | 0 | eNewType == OFTStringList) |
1362 | 0 | { |
1363 | 0 | poFDefn->SetSubType(OFSTNone); |
1364 | 0 | poFDefn->SetType(eNewType); |
1365 | 0 | } |
1366 | 0 | else if (eNewType == OFTInteger64) |
1367 | 0 | { |
1368 | 0 | poFDefn->SetSubType(OFSTNone); |
1369 | 0 | poFDefn->SetType(OFTInteger64List); |
1370 | 0 | } |
1371 | 0 | else if (eNewType == OFTReal) |
1372 | 0 | { |
1373 | 0 | poFDefn->SetSubType(OFSTNone); |
1374 | 0 | poFDefn->SetType(OFTRealList); |
1375 | 0 | } |
1376 | 0 | else if (eNewType == OFTInteger || eNewType == OFTIntegerList) |
1377 | 0 | { |
1378 | 0 | if (eSubType == OFSTBoolean && eNewSubType != OFSTBoolean) |
1379 | 0 | { |
1380 | 0 | poFDefn->SetSubType(OFSTNone); |
1381 | 0 | } |
1382 | 0 | } |
1383 | 0 | else |
1384 | 0 | { |
1385 | 0 | poFDefn->SetSubType(OFSTNone); |
1386 | 0 | poFDefn->SetType(OFTString); |
1387 | 0 | poFDefn->SetSubType(OFSTJSON); |
1388 | 0 | } |
1389 | 0 | } |
1390 | 0 | else if (eType == OFTInteger64List) |
1391 | 0 | { |
1392 | 0 | if (eNewType == OFTString) |
1393 | 0 | { |
1394 | 0 | if (!bNewIsEmptyArray) |
1395 | 0 | { |
1396 | 0 | poFDefn->SetSubType(OFSTNone); |
1397 | 0 | poFDefn->SetType(eNewType); |
1398 | 0 | poFDefn->SetSubType(OFSTJSON); |
1399 | 0 | } |
1400 | 0 | } |
1401 | 0 | else if (eNewType == OFTInteger64List || eNewType == OFTRealList || |
1402 | 0 | eNewType == OFTStringList) |
1403 | 0 | { |
1404 | 0 | poFDefn->SetSubType(OFSTNone); |
1405 | 0 | poFDefn->SetType(eNewType); |
1406 | 0 | } |
1407 | 0 | else if (eNewType == OFTReal) |
1408 | 0 | { |
1409 | 0 | poFDefn->SetSubType(OFSTNone); |
1410 | 0 | poFDefn->SetType(OFTRealList); |
1411 | 0 | } |
1412 | 0 | else if (eNewType != OFTInteger && eNewType != OFTInteger64 && |
1413 | 0 | eNewType != OFTIntegerList) |
1414 | 0 | { |
1415 | 0 | poFDefn->SetSubType(OFSTNone); |
1416 | 0 | poFDefn->SetType(OFTString); |
1417 | 0 | poFDefn->SetSubType(OFSTJSON); |
1418 | 0 | } |
1419 | 0 | } |
1420 | 0 | else if (eType == OFTRealList) |
1421 | 0 | { |
1422 | 0 | if (eNewType == OFTString) |
1423 | 0 | { |
1424 | 0 | if (!bNewIsEmptyArray) |
1425 | 0 | { |
1426 | 0 | poFDefn->SetSubType(OFSTNone); |
1427 | 0 | poFDefn->SetType(eNewType); |
1428 | 0 | poFDefn->SetSubType(OFSTJSON); |
1429 | 0 | } |
1430 | 0 | } |
1431 | 0 | else if (eNewType == OFTStringList) |
1432 | 0 | { |
1433 | 0 | poFDefn->SetSubType(OFSTNone); |
1434 | 0 | poFDefn->SetType(eNewType); |
1435 | 0 | } |
1436 | 0 | else if (eNewType != OFTInteger && eNewType != OFTInteger64 && |
1437 | 0 | eNewType != OFTReal && eNewType != OFTIntegerList && |
1438 | 0 | eNewType != OFTInteger64List && eNewType != OFTRealList) |
1439 | 0 | { |
1440 | 0 | poFDefn->SetSubType(OFSTNone); |
1441 | 0 | poFDefn->SetType(OFTString); |
1442 | 0 | poFDefn->SetSubType(OFSTJSON); |
1443 | 0 | } |
1444 | 0 | } |
1445 | 0 | else if (eType == OFTStringList) |
1446 | 0 | { |
1447 | 0 | if (eNewType == OFTString && eNewSubType == OFSTJSON) |
1448 | 0 | { |
1449 | 0 | if (!bNewIsEmptyArray) |
1450 | 0 | { |
1451 | 0 | poFDefn->SetSubType(OFSTNone); |
1452 | 0 | poFDefn->SetType(eNewType); |
1453 | 0 | poFDefn->SetSubType(OFSTJSON); |
1454 | 0 | } |
1455 | 0 | } |
1456 | 0 | } |
1457 | 0 | else if (eType == OFTDate || eType == OFTTime || eType == OFTDateTime) |
1458 | 0 | { |
1459 | 0 | if (eNewType == OFTString && !bDateAsString && |
1460 | 0 | eNewSubType == OFSTNone) |
1461 | 0 | { |
1462 | 0 | int nTZFlag = 0; |
1463 | 0 | eNewType = GeoJSONStringPropertyToFieldType(poVal, nTZFlag); |
1464 | 0 | if (poFDefn->GetTZFlag() > OGR_TZFLAG_UNKNOWN && |
1465 | 0 | nTZFlag != poFDefn->GetTZFlag()) |
1466 | 0 | { |
1467 | 0 | if (nTZFlag == OGR_TZFLAG_UNKNOWN) |
1468 | 0 | poFDefn->SetTZFlag(OGR_TZFLAG_UNKNOWN); |
1469 | 0 | else |
1470 | 0 | poFDefn->SetTZFlag(OGR_TZFLAG_MIXED_TZ); |
1471 | 0 | } |
1472 | 0 | } |
1473 | 0 | if (eType != eNewType) |
1474 | 0 | { |
1475 | 0 | poFDefn->SetSubType(OFSTNone); |
1476 | 0 | if (eNewType == OFTString) |
1477 | 0 | { |
1478 | 0 | poFDefn->SetType(eNewType); |
1479 | 0 | poFDefn->SetSubType(eNewSubType); |
1480 | 0 | } |
1481 | 0 | else if (eType == OFTDate && eNewType == OFTDateTime) |
1482 | 0 | { |
1483 | 0 | poFDefn->SetType(OFTDateTime); |
1484 | 0 | } |
1485 | 0 | else if (!(eType == OFTDateTime && eNewType == OFTDate)) |
1486 | 0 | { |
1487 | 0 | poFDefn->SetType(OFTString); |
1488 | 0 | poFDefn->SetSubType(OFSTJSON); |
1489 | 0 | } |
1490 | 0 | } |
1491 | 0 | } |
1492 | |
|
1493 | 0 | poFDefn->SetWidth(poFDefn->GetSubType() == OFSTBoolean ? 1 : 0); |
1494 | 0 | } |
1495 | 0 | else |
1496 | 0 | { |
1497 | 0 | const int nIndex = oMapFieldNameToIdxIter->second; |
1498 | 0 | retIndices.emplace_back(nIndex); |
1499 | 0 | } |
1500 | 0 | } |
1501 | | |
1502 | | /************************************************************************/ |
1503 | | /* OGRGeoJSONGenerateFeatureDefnDealWithID() */ |
1504 | | /************************************************************************/ |
1505 | | |
1506 | | void OGRGeoJSONGenerateFeatureDefnDealWithID( |
1507 | | json_object *poObj, json_object *poObjProps, int &nPrevFieldIdx, |
1508 | | std::map<std::string, int> &oMapFieldNameToIdx, |
1509 | | std::vector<std::unique_ptr<OGRFieldDefn>> &apoFieldDefn, |
1510 | | gdal::DirectedAcyclicGraph<int, std::string> &dag, |
1511 | | bool &bFeatureLevelIdAsFID, bool &bFeatureLevelIdAsAttribute, |
1512 | | bool &bNeedFID64) |
1513 | 0 | { |
1514 | 0 | json_object *poObjId = OGRGeoJSONFindMemberByName(poObj, "id"); |
1515 | 0 | if (poObjId) |
1516 | 0 | { |
1517 | 0 | const auto iterIdxId = oMapFieldNameToIdx.find("id"); |
1518 | 0 | if (iterIdxId == oMapFieldNameToIdx.end()) |
1519 | 0 | { |
1520 | 0 | if (json_object_get_type(poObjId) == json_type_int) |
1521 | 0 | { |
1522 | | // If the value is negative, we cannot use it as the FID |
1523 | | // as OGRMemLayer doesn't support negative FID. And we would |
1524 | | // have an ambiguity with -1 that can mean OGRNullFID |
1525 | | // so in that case create a regular attribute and let OGR |
1526 | | // attribute sequential OGR FIDs. |
1527 | 0 | if (json_object_get_int64(poObjId) < 0) |
1528 | 0 | { |
1529 | 0 | bFeatureLevelIdAsFID = false; |
1530 | 0 | } |
1531 | 0 | else |
1532 | 0 | { |
1533 | 0 | bFeatureLevelIdAsFID = true; |
1534 | 0 | } |
1535 | 0 | } |
1536 | 0 | if (!bFeatureLevelIdAsFID) |
1537 | 0 | { |
1538 | | // If there's a top-level id of type string or negative int, |
1539 | | // and no properties.id, then declare a id field. |
1540 | 0 | bool bHasRegularIdProp = false; |
1541 | 0 | if (nullptr != poObjProps && |
1542 | 0 | json_object_get_type(poObjProps) == json_type_object) |
1543 | 0 | { |
1544 | 0 | bHasRegularIdProp = |
1545 | 0 | CPL_json_object_object_get(poObjProps, "id") != nullptr; |
1546 | 0 | } |
1547 | 0 | if (!bHasRegularIdProp) |
1548 | 0 | { |
1549 | 0 | OGRFieldType eType = OFTString; |
1550 | 0 | if (json_object_get_type(poObjId) == json_type_int) |
1551 | 0 | { |
1552 | 0 | if (CPL_INT64_FITS_ON_INT32( |
1553 | 0 | json_object_get_int64(poObjId))) |
1554 | 0 | eType = OFTInteger; |
1555 | 0 | else |
1556 | 0 | eType = OFTInteger64; |
1557 | 0 | } |
1558 | 0 | apoFieldDefn.emplace_back( |
1559 | 0 | std::make_unique<OGRFieldDefn>("id", eType)); |
1560 | 0 | const int nIdx = static_cast<int>(apoFieldDefn.size()) - 1; |
1561 | 0 | oMapFieldNameToIdx["id"] = nIdx; |
1562 | 0 | nPrevFieldIdx = nIdx; |
1563 | 0 | dag.addNode(nIdx, "id"); |
1564 | 0 | bFeatureLevelIdAsAttribute = true; |
1565 | 0 | } |
1566 | 0 | } |
1567 | 0 | } |
1568 | 0 | else |
1569 | 0 | { |
1570 | 0 | const int nIdx = iterIdxId->second; |
1571 | 0 | nPrevFieldIdx = nIdx; |
1572 | 0 | if (bFeatureLevelIdAsAttribute && |
1573 | 0 | json_object_get_type(poObjId) == json_type_int) |
1574 | 0 | { |
1575 | 0 | if (apoFieldDefn[nIdx]->GetType() == OFTInteger) |
1576 | 0 | { |
1577 | 0 | if (!CPL_INT64_FITS_ON_INT32( |
1578 | 0 | json_object_get_int64(poObjId))) |
1579 | 0 | apoFieldDefn[nIdx]->SetType(OFTInteger64); |
1580 | 0 | } |
1581 | 0 | } |
1582 | 0 | else if (bFeatureLevelIdAsAttribute) |
1583 | 0 | { |
1584 | 0 | apoFieldDefn[nIdx]->SetType(OFTString); |
1585 | 0 | } |
1586 | 0 | } |
1587 | 0 | } |
1588 | |
|
1589 | 0 | if (!bNeedFID64) |
1590 | 0 | { |
1591 | 0 | json_object *poId = CPL_json_object_object_get(poObj, "id"); |
1592 | 0 | if (poId == nullptr) |
1593 | 0 | { |
1594 | 0 | if (poObjProps && |
1595 | 0 | json_object_get_type(poObjProps) == json_type_object) |
1596 | 0 | { |
1597 | 0 | poId = CPL_json_object_object_get(poObjProps, "id"); |
1598 | 0 | } |
1599 | 0 | } |
1600 | 0 | if (poId != nullptr && json_object_get_type(poId) == json_type_int) |
1601 | 0 | { |
1602 | 0 | GIntBig nFID = json_object_get_int64(poId); |
1603 | 0 | if (!CPL_INT64_FITS_ON_INT32(nFID)) |
1604 | 0 | { |
1605 | 0 | bNeedFID64 = true; |
1606 | 0 | } |
1607 | 0 | } |
1608 | 0 | } |
1609 | 0 | } |
1610 | | |
1611 | | /************************************************************************/ |
1612 | | /* GenerateFeatureDefn() */ |
1613 | | /************************************************************************/ |
1614 | | bool OGRGeoJSONBaseReader::GenerateFeatureDefn( |
1615 | | std::map<std::string, int> &oMapFieldNameToIdx, |
1616 | | std::vector<std::unique_ptr<OGRFieldDefn>> &apoFieldDefn, |
1617 | | gdal::DirectedAcyclicGraph<int, std::string> &dag, OGRLayer *poLayer, |
1618 | | json_object *poObj) |
1619 | 0 | { |
1620 | | /* -------------------------------------------------------------------- */ |
1621 | | /* Read collection of properties. */ |
1622 | | /* -------------------------------------------------------------------- */ |
1623 | 0 | lh_entry *poObjPropsEntry = |
1624 | 0 | OGRGeoJSONFindMemberEntryByName(poObj, "properties"); |
1625 | 0 | json_object *poObjProps = |
1626 | 0 | const_cast<json_object *>(static_cast<const json_object *>( |
1627 | 0 | poObjPropsEntry ? poObjPropsEntry->v : nullptr)); |
1628 | |
|
1629 | 0 | std::vector<int> anCurFieldIndices; |
1630 | 0 | int nPrevFieldIdx = -1; |
1631 | |
|
1632 | 0 | OGRGeoJSONGenerateFeatureDefnDealWithID( |
1633 | 0 | poObj, poObjProps, nPrevFieldIdx, oMapFieldNameToIdx, apoFieldDefn, dag, |
1634 | 0 | bFeatureLevelIdAsFID_, bFeatureLevelIdAsAttribute_, m_bNeedFID64); |
1635 | |
|
1636 | 0 | json_object *poGeomObj = CPL_json_object_object_get(poObj, "geometry"); |
1637 | 0 | if (poGeomObj && json_object_get_type(poGeomObj) == json_type_object) |
1638 | 0 | { |
1639 | 0 | const auto eType = |
1640 | 0 | OGRGeoJSONGetOGRGeometryType(poGeomObj, /* bHasM = */ false); |
1641 | |
|
1642 | 0 | OGRGeoJSONUpdateLayerGeomType(m_bFirstGeometry, eType, |
1643 | 0 | m_eLayerGeomType); |
1644 | |
|
1645 | 0 | if (eType != wkbNone && eType != wkbUnknown) |
1646 | 0 | { |
1647 | | // This is maybe too optimistic: it assumes that the geometry |
1648 | | // coordinates array is in the correct format |
1649 | 0 | m_bExtentRead |= OGRGeoJSONGetExtent3D(poGeomObj, &m_oEnvelope3D); |
1650 | 0 | } |
1651 | 0 | } |
1652 | |
|
1653 | 0 | bool bSuccess = false; |
1654 | |
|
1655 | 0 | if (nullptr != poObjProps && |
1656 | 0 | json_object_get_type(poObjProps) == json_type_object) |
1657 | 0 | { |
1658 | 0 | if (bIsGeocouchSpatiallistFormat) |
1659 | 0 | { |
1660 | 0 | poObjProps = CPL_json_object_object_get(poObjProps, "properties"); |
1661 | 0 | if (nullptr == poObjProps || |
1662 | 0 | json_object_get_type(poObjProps) != json_type_object) |
1663 | 0 | { |
1664 | 0 | return true; |
1665 | 0 | } |
1666 | 0 | } |
1667 | | |
1668 | 0 | json_object_iter it; |
1669 | 0 | it.key = nullptr; |
1670 | 0 | it.val = nullptr; |
1671 | 0 | it.entry = nullptr; |
1672 | 0 | json_object_object_foreachC(poObjProps, it) |
1673 | 0 | { |
1674 | 0 | if (!bIsGeocouchSpatiallistFormat && |
1675 | 0 | !cpl::contains(oMapFieldNameToIdx, it.key)) |
1676 | 0 | { |
1677 | | // Detect the special kind of GeoJSON output by a spatiallist of |
1678 | | // GeoCouch such as: |
1679 | | // http://gd.iriscouch.com/cphosm/_design/geo/_rewrite/data?bbox=12.53%2C55.73%2C12.54%2C55.73 |
1680 | 0 | if (strcmp(it.key, "_id") == 0) |
1681 | 0 | { |
1682 | 0 | bFoundGeocouchId = true; |
1683 | 0 | } |
1684 | 0 | else if (bFoundGeocouchId && strcmp(it.key, "_rev") == 0) |
1685 | 0 | { |
1686 | 0 | bFoundRev = true; |
1687 | 0 | } |
1688 | 0 | else if (bFoundRev && strcmp(it.key, "type") == 0 && |
1689 | 0 | it.val != nullptr && |
1690 | 0 | json_object_get_type(it.val) == json_type_string && |
1691 | 0 | strcmp(json_object_get_string(it.val), "Feature") == 0) |
1692 | 0 | { |
1693 | 0 | bFoundTypeFeature = true; |
1694 | 0 | } |
1695 | 0 | else if (bFoundTypeFeature && |
1696 | 0 | strcmp(it.key, "properties") == 0 && |
1697 | 0 | it.val != nullptr && |
1698 | 0 | json_object_get_type(it.val) == json_type_object) |
1699 | 0 | { |
1700 | 0 | if (bFlattenGeocouchSpatiallistFormat < 0) |
1701 | 0 | bFlattenGeocouchSpatiallistFormat = |
1702 | 0 | CPLTestBool(CPLGetConfigOption( |
1703 | 0 | "GEOJSON_FLATTEN_GEOCOUCH", "TRUE")); |
1704 | 0 | if (bFlattenGeocouchSpatiallistFormat) |
1705 | 0 | { |
1706 | 0 | const auto typeIter = oMapFieldNameToIdx.find("type"); |
1707 | 0 | if (typeIter != oMapFieldNameToIdx.end()) |
1708 | 0 | { |
1709 | 0 | const int nIdx = typeIter->second; |
1710 | 0 | apoFieldDefn.erase(apoFieldDefn.begin() + nIdx); |
1711 | 0 | oMapFieldNameToIdx.erase(typeIter); |
1712 | 0 | dag.removeNode(nIdx); |
1713 | 0 | } |
1714 | |
|
1715 | 0 | bIsGeocouchSpatiallistFormat = true; |
1716 | 0 | return GenerateFeatureDefn(oMapFieldNameToIdx, |
1717 | 0 | apoFieldDefn, dag, poLayer, |
1718 | 0 | poObj); |
1719 | 0 | } |
1720 | 0 | } |
1721 | 0 | } |
1722 | | |
1723 | 0 | anCurFieldIndices.clear(); |
1724 | 0 | OGRGeoJSONReaderAddOrUpdateField( |
1725 | 0 | anCurFieldIndices, oMapFieldNameToIdx, apoFieldDefn, it.key, |
1726 | 0 | it.val, bFlattenNestedAttributes_, chNestedAttributeSeparator_, |
1727 | 0 | bArrayAsString_, bDateAsString_, aoSetUndeterminedTypeFields_); |
1728 | 0 | for (int idx : anCurFieldIndices) |
1729 | 0 | { |
1730 | 0 | dag.addNode(idx, apoFieldDefn[idx]->GetNameRef()); |
1731 | 0 | if (nPrevFieldIdx != -1) |
1732 | 0 | { |
1733 | 0 | dag.addEdge(nPrevFieldIdx, idx); |
1734 | 0 | } |
1735 | 0 | nPrevFieldIdx = idx; |
1736 | 0 | } |
1737 | 0 | } |
1738 | | |
1739 | | // Whether/how we should deal with foreign members |
1740 | 0 | if (eForeignMemberProcessing_ == ForeignMemberProcessing::AUTO) |
1741 | 0 | { |
1742 | 0 | if (CPL_json_object_object_get(poObj, "stac_version")) |
1743 | 0 | eForeignMemberProcessing_ = ForeignMemberProcessing::STAC; |
1744 | 0 | else |
1745 | 0 | eForeignMemberProcessing_ = ForeignMemberProcessing::NONE; |
1746 | 0 | } |
1747 | 0 | if (eForeignMemberProcessing_ != ForeignMemberProcessing::NONE) |
1748 | 0 | { |
1749 | 0 | it.key = nullptr; |
1750 | 0 | it.val = nullptr; |
1751 | 0 | it.entry = nullptr; |
1752 | 0 | json_object_object_foreachC(poObj, it) |
1753 | 0 | { |
1754 | 0 | if (eForeignMemberProcessing_ == |
1755 | 0 | ForeignMemberProcessing::STAC && |
1756 | 0 | strcmp(it.key, "assets") == 0 && |
1757 | 0 | json_object_get_type(it.val) == json_type_object) |
1758 | 0 | { |
1759 | 0 | json_object_iter it2; |
1760 | 0 | it2.key = nullptr; |
1761 | 0 | it2.val = nullptr; |
1762 | 0 | it2.entry = nullptr; |
1763 | 0 | json_object_object_foreachC(it.val, it2) |
1764 | 0 | { |
1765 | 0 | if (json_object_get_type(it2.val) == json_type_object) |
1766 | 0 | { |
1767 | 0 | json_object_iter it3; |
1768 | 0 | it3.key = nullptr; |
1769 | 0 | it3.val = nullptr; |
1770 | 0 | it3.entry = nullptr; |
1771 | 0 | json_object_object_foreachC(it2.val, it3) |
1772 | 0 | { |
1773 | 0 | anCurFieldIndices.clear(); |
1774 | 0 | OGRGeoJSONReaderAddOrUpdateField( |
1775 | 0 | anCurFieldIndices, oMapFieldNameToIdx, |
1776 | 0 | apoFieldDefn, |
1777 | 0 | std::string("assets.") |
1778 | 0 | .append(it2.key) |
1779 | 0 | .append(".") |
1780 | 0 | .append(it3.key) |
1781 | 0 | .c_str(), |
1782 | 0 | it3.val, bFlattenNestedAttributes_, |
1783 | 0 | chNestedAttributeSeparator_, |
1784 | 0 | bArrayAsString_, bDateAsString_, |
1785 | 0 | aoSetUndeterminedTypeFields_); |
1786 | 0 | for (int idx : anCurFieldIndices) |
1787 | 0 | { |
1788 | 0 | dag.addNode( |
1789 | 0 | idx, apoFieldDefn[idx]->GetNameRef()); |
1790 | 0 | if (nPrevFieldIdx != -1) |
1791 | 0 | { |
1792 | 0 | dag.addEdge(nPrevFieldIdx, idx); |
1793 | 0 | } |
1794 | 0 | nPrevFieldIdx = idx; |
1795 | 0 | } |
1796 | 0 | } |
1797 | 0 | } |
1798 | 0 | } |
1799 | 0 | } |
1800 | 0 | else if (strcmp(it.key, "type") != 0 && |
1801 | 0 | strcmp(it.key, "id") != 0 && |
1802 | 0 | strcmp(it.key, "geometry") != 0 && |
1803 | 0 | strcmp(it.key, "bbox") != 0 && |
1804 | 0 | strcmp(it.key, "properties") != 0) |
1805 | 0 | { |
1806 | 0 | anCurFieldIndices.clear(); |
1807 | 0 | OGRGeoJSONReaderAddOrUpdateField( |
1808 | 0 | anCurFieldIndices, oMapFieldNameToIdx, apoFieldDefn, |
1809 | 0 | it.key, it.val, bFlattenNestedAttributes_, |
1810 | 0 | chNestedAttributeSeparator_, bArrayAsString_, |
1811 | 0 | bDateAsString_, aoSetUndeterminedTypeFields_); |
1812 | 0 | for (int idx : anCurFieldIndices) |
1813 | 0 | { |
1814 | 0 | dag.addNode(idx, apoFieldDefn[idx]->GetNameRef()); |
1815 | 0 | if (nPrevFieldIdx != -1) |
1816 | 0 | { |
1817 | 0 | dag.addEdge(nPrevFieldIdx, idx); |
1818 | 0 | } |
1819 | 0 | nPrevFieldIdx = idx; |
1820 | 0 | } |
1821 | 0 | } |
1822 | 0 | } |
1823 | 0 | } |
1824 | |
|
1825 | 0 | bSuccess = true; // SUCCESS |
1826 | 0 | } |
1827 | 0 | else if (nullptr != poObjPropsEntry && |
1828 | 0 | (poObjProps == nullptr || |
1829 | 0 | (json_object_get_type(poObjProps) == json_type_array && |
1830 | 0 | json_object_array_length(poObjProps) == 0))) |
1831 | 0 | { |
1832 | | // Ignore "properties": null and "properties": [] |
1833 | 0 | bSuccess = true; |
1834 | 0 | } |
1835 | 0 | else if (poObj != nullptr && |
1836 | 0 | json_object_get_type(poObj) == json_type_object) |
1837 | 0 | { |
1838 | 0 | json_object_iter it; |
1839 | 0 | it.key = nullptr; |
1840 | 0 | it.val = nullptr; |
1841 | 0 | it.entry = nullptr; |
1842 | 0 | json_object_object_foreachC(poObj, it) |
1843 | 0 | { |
1844 | 0 | if (strcmp(it.key, "type") != 0 && |
1845 | 0 | strcmp(it.key, "geometry") != 0 && |
1846 | 0 | strcmp(it.key, "centroid") != 0 && |
1847 | 0 | strcmp(it.key, "bbox") != 0 && strcmp(it.key, "center") != 0) |
1848 | 0 | { |
1849 | 0 | if (!cpl::contains(oMapFieldNameToIdx, it.key)) |
1850 | 0 | { |
1851 | 0 | anCurFieldIndices.clear(); |
1852 | 0 | OGRGeoJSONReaderAddOrUpdateField( |
1853 | 0 | anCurFieldIndices, oMapFieldNameToIdx, apoFieldDefn, |
1854 | 0 | it.key, it.val, bFlattenNestedAttributes_, |
1855 | 0 | chNestedAttributeSeparator_, bArrayAsString_, |
1856 | 0 | bDateAsString_, aoSetUndeterminedTypeFields_); |
1857 | 0 | for (int idx : anCurFieldIndices) |
1858 | 0 | { |
1859 | 0 | dag.addNode(idx, apoFieldDefn[idx]->GetNameRef()); |
1860 | 0 | if (nPrevFieldIdx != -1) |
1861 | 0 | { |
1862 | 0 | dag.addEdge(nPrevFieldIdx, idx); |
1863 | 0 | } |
1864 | 0 | nPrevFieldIdx = idx; |
1865 | 0 | } |
1866 | 0 | } |
1867 | 0 | } |
1868 | 0 | } |
1869 | |
|
1870 | 0 | bSuccess = true; // SUCCESS |
1871 | | // CPLError(CE_Failure, CPLE_AppDefined, |
1872 | | // "Invalid Feature object. " |
1873 | | // "Missing \'properties\' member." ); |
1874 | 0 | } |
1875 | | |
1876 | 0 | return bSuccess; |
1877 | 0 | } |
1878 | | |
1879 | | /************************************************************************/ |
1880 | | /* OGRGeoJSONUpdateLayerGeomType() */ |
1881 | | /************************************************************************/ |
1882 | | |
1883 | | bool OGRGeoJSONUpdateLayerGeomType(bool &bFirstGeom, |
1884 | | OGRwkbGeometryType eGeomType, |
1885 | | OGRwkbGeometryType &eLayerGeomType) |
1886 | 0 | { |
1887 | 0 | if (bFirstGeom) |
1888 | 0 | { |
1889 | 0 | eLayerGeomType = eGeomType; |
1890 | 0 | bFirstGeom = false; |
1891 | 0 | } |
1892 | 0 | else if (OGR_GT_HasZ(eGeomType) && !OGR_GT_HasZ(eLayerGeomType) && |
1893 | 0 | wkbFlatten(eGeomType) == wkbFlatten(eLayerGeomType)) |
1894 | 0 | { |
1895 | 0 | eLayerGeomType = eGeomType; |
1896 | 0 | } |
1897 | 0 | else if (!OGR_GT_HasZ(eGeomType) && OGR_GT_HasZ(eLayerGeomType) && |
1898 | 0 | wkbFlatten(eGeomType) == wkbFlatten(eLayerGeomType)) |
1899 | 0 | { |
1900 | | // ok |
1901 | 0 | } |
1902 | 0 | else if (eGeomType != eLayerGeomType && eLayerGeomType != wkbUnknown) |
1903 | 0 | { |
1904 | 0 | CPLDebug("GeoJSON", "Detected layer of mixed-geometry type features."); |
1905 | 0 | eLayerGeomType = wkbUnknown; |
1906 | 0 | return false; |
1907 | 0 | } |
1908 | 0 | return true; |
1909 | 0 | } |
1910 | | |
1911 | | /************************************************************************/ |
1912 | | /* AddFeature */ |
1913 | | /************************************************************************/ |
1914 | | |
1915 | | bool OGRGeoJSONReader::AddFeature(OGRGeoJSONLayer *poLayer, |
1916 | | OGRGeometry *poGeometry) |
1917 | 0 | { |
1918 | 0 | bool bAdded = false; |
1919 | | |
1920 | | // TODO: Should we check if geometry is of type of wkbGeometryCollection? |
1921 | |
|
1922 | 0 | if (nullptr != poGeometry) |
1923 | 0 | { |
1924 | 0 | OGRFeature *poFeature = new OGRFeature(poLayer->GetLayerDefn()); |
1925 | 0 | poFeature->SetGeometryDirectly(poGeometry); |
1926 | |
|
1927 | 0 | bAdded = AddFeature(poLayer, poFeature); |
1928 | 0 | } |
1929 | |
|
1930 | 0 | return bAdded; |
1931 | 0 | } |
1932 | | |
1933 | | /************************************************************************/ |
1934 | | /* AddFeature */ |
1935 | | /************************************************************************/ |
1936 | | |
1937 | | bool OGRGeoJSONReader::AddFeature(OGRGeoJSONLayer *poLayer, |
1938 | | OGRFeature *poFeature) |
1939 | 0 | { |
1940 | 0 | if (poFeature == nullptr) |
1941 | 0 | return false; |
1942 | | |
1943 | 0 | poLayer->AddFeature(poFeature); |
1944 | 0 | delete poFeature; |
1945 | |
|
1946 | 0 | return true; |
1947 | 0 | } |
1948 | | |
1949 | | /************************************************************************/ |
1950 | | /* ReadGeometry */ |
1951 | | /************************************************************************/ |
1952 | | |
1953 | | OGRGeometry * |
1954 | | OGRGeoJSONBaseReader::ReadGeometry(json_object *poObj, |
1955 | | const OGRSpatialReference *poLayerSRS) |
1956 | 0 | { |
1957 | 0 | auto poGeometry = |
1958 | 0 | OGRGeoJSONReadGeometry(poObj, /* bHasM = */ false, poLayerSRS); |
1959 | | |
1960 | | /* -------------------------------------------------------------------- */ |
1961 | | /* Wrap geometry with GeometryCollection as a common denominator. */ |
1962 | | /* Sometimes a GeoJSON text may consist of objects of different */ |
1963 | | /* geometry types. Users may request wrapping all geometries with */ |
1964 | | /* OGRGeometryCollection type by using option */ |
1965 | | /* GEOMETRY_AS_COLLECTION=NO|YES (NO is default). */ |
1966 | | /* -------------------------------------------------------------------- */ |
1967 | 0 | if (nullptr != poGeometry) |
1968 | 0 | { |
1969 | 0 | if (!bGeometryPreserve_ && |
1970 | 0 | wkbGeometryCollection != poGeometry->getGeometryType()) |
1971 | 0 | { |
1972 | 0 | auto poMetaGeometry = std::make_unique<OGRGeometryCollection>(); |
1973 | 0 | poMetaGeometry->addGeometry(std::move(poGeometry)); |
1974 | 0 | return poMetaGeometry.release(); |
1975 | 0 | } |
1976 | 0 | } |
1977 | | |
1978 | 0 | return poGeometry.release(); |
1979 | 0 | } |
1980 | | |
1981 | | /************************************************************************/ |
1982 | | /* OGRGeoJSONReaderSetFieldNestedAttribute() */ |
1983 | | /************************************************************************/ |
1984 | | |
1985 | | static void OGRGeoJSONReaderSetFieldNestedAttribute(OGRLayer *poLayer, |
1986 | | OGRFeature *poFeature, |
1987 | | const char *pszAttrPrefix, |
1988 | | char chSeparator, |
1989 | | json_object *poVal) |
1990 | 0 | { |
1991 | 0 | json_object_iter it; |
1992 | 0 | it.key = nullptr; |
1993 | 0 | it.val = nullptr; |
1994 | 0 | it.entry = nullptr; |
1995 | 0 | json_object_object_foreachC(poVal, it) |
1996 | 0 | { |
1997 | 0 | const char szSeparator[2] = {chSeparator, '\0'}; |
1998 | 0 | const CPLString osAttrName( |
1999 | 0 | CPLSPrintf("%s%s%s", pszAttrPrefix, szSeparator, it.key)); |
2000 | 0 | if (it.val != nullptr && |
2001 | 0 | json_object_get_type(it.val) == json_type_object) |
2002 | 0 | { |
2003 | 0 | OGRGeoJSONReaderSetFieldNestedAttribute( |
2004 | 0 | poLayer, poFeature, osAttrName, chSeparator, it.val); |
2005 | 0 | } |
2006 | 0 | else |
2007 | 0 | { |
2008 | 0 | const int nField = |
2009 | 0 | poFeature->GetDefnRef()->GetFieldIndexCaseSensitive(osAttrName); |
2010 | 0 | OGRGeoJSONReaderSetField(poLayer, poFeature, nField, osAttrName, |
2011 | 0 | it.val, false, 0); |
2012 | 0 | } |
2013 | 0 | } |
2014 | 0 | } |
2015 | | |
2016 | | /************************************************************************/ |
2017 | | /* OGRGeoJSONReaderSetField() */ |
2018 | | /************************************************************************/ |
2019 | | |
2020 | | void OGRGeoJSONReaderSetField(OGRLayer *poLayer, OGRFeature *poFeature, |
2021 | | int nField, const char *pszAttrPrefix, |
2022 | | json_object *poVal, bool bFlattenNestedAttributes, |
2023 | | char chNestedAttributeSeparator) |
2024 | 0 | { |
2025 | 0 | if (bFlattenNestedAttributes && poVal != nullptr && |
2026 | 0 | json_object_get_type(poVal) == json_type_object) |
2027 | 0 | { |
2028 | 0 | OGRGeoJSONReaderSetFieldNestedAttribute( |
2029 | 0 | poLayer, poFeature, pszAttrPrefix, chNestedAttributeSeparator, |
2030 | 0 | poVal); |
2031 | 0 | return; |
2032 | 0 | } |
2033 | 0 | if (nField < 0) |
2034 | 0 | return; |
2035 | | |
2036 | 0 | const OGRFieldDefn *poFieldDefn = poFeature->GetFieldDefnRef(nField); |
2037 | 0 | CPLAssert(nullptr != poFieldDefn); |
2038 | 0 | OGRFieldType eType = poFieldDefn->GetType(); |
2039 | |
|
2040 | 0 | if (poVal == nullptr) |
2041 | 0 | { |
2042 | 0 | poFeature->SetFieldNull(nField); |
2043 | 0 | } |
2044 | 0 | else if (OFTInteger == eType) |
2045 | 0 | { |
2046 | 0 | poFeature->SetField(nField, json_object_get_int(poVal)); |
2047 | | |
2048 | | // Check if FID available and set correct value. |
2049 | 0 | if (EQUAL(poFieldDefn->GetNameRef(), poLayer->GetFIDColumn())) |
2050 | 0 | poFeature->SetFID(json_object_get_int(poVal)); |
2051 | 0 | } |
2052 | 0 | else if (OFTInteger64 == eType) |
2053 | 0 | { |
2054 | 0 | poFeature->SetField(nField, (GIntBig)json_object_get_int64(poVal)); |
2055 | | |
2056 | | // Check if FID available and set correct value. |
2057 | 0 | if (EQUAL(poFieldDefn->GetNameRef(), poLayer->GetFIDColumn())) |
2058 | 0 | poFeature->SetFID( |
2059 | 0 | static_cast<GIntBig>(json_object_get_int64(poVal))); |
2060 | 0 | } |
2061 | 0 | else if (OFTReal == eType) |
2062 | 0 | { |
2063 | 0 | poFeature->SetField(nField, json_object_get_double(poVal)); |
2064 | 0 | } |
2065 | 0 | else if (OFTIntegerList == eType) |
2066 | 0 | { |
2067 | 0 | const enum json_type eJSonType(json_object_get_type(poVal)); |
2068 | 0 | if (eJSonType == json_type_array) |
2069 | 0 | { |
2070 | 0 | const auto nLength = json_object_array_length(poVal); |
2071 | 0 | int *panVal = static_cast<int *>(CPLMalloc(sizeof(int) * nLength)); |
2072 | 0 | for (auto i = decltype(nLength){0}; i < nLength; i++) |
2073 | 0 | { |
2074 | 0 | json_object *poRow = json_object_array_get_idx(poVal, i); |
2075 | 0 | panVal[i] = json_object_get_int(poRow); |
2076 | 0 | } |
2077 | 0 | poFeature->SetField(nField, static_cast<int>(nLength), panVal); |
2078 | 0 | CPLFree(panVal); |
2079 | 0 | } |
2080 | 0 | else if (eJSonType == json_type_boolean || eJSonType == json_type_int) |
2081 | 0 | { |
2082 | 0 | poFeature->SetField(nField, json_object_get_int(poVal)); |
2083 | 0 | } |
2084 | 0 | } |
2085 | 0 | else if (OFTInteger64List == eType) |
2086 | 0 | { |
2087 | 0 | const enum json_type eJSonType(json_object_get_type(poVal)); |
2088 | 0 | if (eJSonType == json_type_array) |
2089 | 0 | { |
2090 | 0 | const auto nLength = json_object_array_length(poVal); |
2091 | 0 | GIntBig *panVal = |
2092 | 0 | static_cast<GIntBig *>(CPLMalloc(sizeof(GIntBig) * nLength)); |
2093 | 0 | for (auto i = decltype(nLength){0}; i < nLength; i++) |
2094 | 0 | { |
2095 | 0 | json_object *poRow = json_object_array_get_idx(poVal, i); |
2096 | 0 | panVal[i] = static_cast<GIntBig>(json_object_get_int64(poRow)); |
2097 | 0 | } |
2098 | 0 | poFeature->SetField(nField, static_cast<int>(nLength), panVal); |
2099 | 0 | CPLFree(panVal); |
2100 | 0 | } |
2101 | 0 | else if (eJSonType == json_type_boolean || eJSonType == json_type_int) |
2102 | 0 | { |
2103 | 0 | poFeature->SetField( |
2104 | 0 | nField, static_cast<GIntBig>(json_object_get_int64(poVal))); |
2105 | 0 | } |
2106 | 0 | } |
2107 | 0 | else if (OFTRealList == eType) |
2108 | 0 | { |
2109 | 0 | const enum json_type eJSonType(json_object_get_type(poVal)); |
2110 | 0 | if (eJSonType == json_type_array) |
2111 | 0 | { |
2112 | 0 | const auto nLength = json_object_array_length(poVal); |
2113 | 0 | double *padfVal = |
2114 | 0 | static_cast<double *>(CPLMalloc(sizeof(double) * nLength)); |
2115 | 0 | for (auto i = decltype(nLength){0}; i < nLength; i++) |
2116 | 0 | { |
2117 | 0 | json_object *poRow = json_object_array_get_idx(poVal, i); |
2118 | 0 | padfVal[i] = json_object_get_double(poRow); |
2119 | 0 | } |
2120 | 0 | poFeature->SetField(nField, static_cast<int>(nLength), padfVal); |
2121 | 0 | CPLFree(padfVal); |
2122 | 0 | } |
2123 | 0 | else if (eJSonType == json_type_boolean || eJSonType == json_type_int || |
2124 | 0 | eJSonType == json_type_double) |
2125 | 0 | { |
2126 | 0 | poFeature->SetField(nField, json_object_get_double(poVal)); |
2127 | 0 | } |
2128 | 0 | } |
2129 | 0 | else if (OFTStringList == eType) |
2130 | 0 | { |
2131 | 0 | const enum json_type eJSonType(json_object_get_type(poVal)); |
2132 | 0 | if (eJSonType == json_type_array) |
2133 | 0 | { |
2134 | 0 | auto nLength = json_object_array_length(poVal); |
2135 | 0 | char **papszVal = |
2136 | 0 | (char **)CPLMalloc(sizeof(char *) * (nLength + 1)); |
2137 | 0 | decltype(nLength) i = 0; // Used after for. |
2138 | 0 | for (; i < nLength; i++) |
2139 | 0 | { |
2140 | 0 | json_object *poRow = json_object_array_get_idx(poVal, i); |
2141 | 0 | const char *pszVal = json_object_get_string(poRow); |
2142 | 0 | if (pszVal == nullptr) |
2143 | 0 | break; |
2144 | 0 | papszVal[i] = CPLStrdup(pszVal); |
2145 | 0 | } |
2146 | 0 | papszVal[i] = nullptr; |
2147 | 0 | poFeature->SetField(nField, papszVal); |
2148 | 0 | CSLDestroy(papszVal); |
2149 | 0 | } |
2150 | 0 | else |
2151 | 0 | { |
2152 | 0 | poFeature->SetField(nField, json_object_get_string(poVal)); |
2153 | 0 | } |
2154 | 0 | } |
2155 | 0 | else |
2156 | 0 | { |
2157 | 0 | poFeature->SetField(nField, json_object_get_string(poVal)); |
2158 | 0 | } |
2159 | 0 | } |
2160 | | |
2161 | | /************************************************************************/ |
2162 | | /* ReadFeature() */ |
2163 | | /************************************************************************/ |
2164 | | |
2165 | | OGRFeature *OGRGeoJSONBaseReader::ReadFeature(OGRLayer *poLayer, |
2166 | | json_object *poObj, |
2167 | | const char *pszSerializedObj) |
2168 | 0 | { |
2169 | 0 | CPLAssert(nullptr != poObj); |
2170 | | |
2171 | 0 | OGRFeatureDefn *poFDefn = poLayer->GetLayerDefn(); |
2172 | 0 | OGRFeature *poFeature = new OGRFeature(poFDefn); |
2173 | |
|
2174 | 0 | if (bStoreNativeData_) |
2175 | 0 | { |
2176 | 0 | poFeature->SetNativeData(pszSerializedObj |
2177 | 0 | ? pszSerializedObj |
2178 | 0 | : json_object_to_json_string(poObj)); |
2179 | 0 | poFeature->SetNativeMediaType("application/vnd.geo+json"); |
2180 | 0 | } |
2181 | | |
2182 | | /* -------------------------------------------------------------------- */ |
2183 | | /* Translate GeoJSON "properties" object to feature attributes. */ |
2184 | | /* -------------------------------------------------------------------- */ |
2185 | 0 | CPLAssert(nullptr != poFeature); |
2186 | | |
2187 | 0 | json_object *poObjProps = OGRGeoJSONFindMemberByName(poObj, "properties"); |
2188 | 0 | if (!bAttributesSkip_ && nullptr != poObjProps && |
2189 | 0 | json_object_get_type(poObjProps) == json_type_object) |
2190 | 0 | { |
2191 | 0 | if (bIsGeocouchSpatiallistFormat) |
2192 | 0 | { |
2193 | 0 | json_object *poId = CPL_json_object_object_get(poObjProps, "_id"); |
2194 | 0 | if (poId != nullptr && |
2195 | 0 | json_object_get_type(poId) == json_type_string) |
2196 | 0 | poFeature->SetField("_id", json_object_get_string(poId)); |
2197 | |
|
2198 | 0 | json_object *poRev = CPL_json_object_object_get(poObjProps, "_rev"); |
2199 | 0 | if (poRev != nullptr && |
2200 | 0 | json_object_get_type(poRev) == json_type_string) |
2201 | 0 | { |
2202 | 0 | poFeature->SetField("_rev", json_object_get_string(poRev)); |
2203 | 0 | } |
2204 | |
|
2205 | 0 | poObjProps = CPL_json_object_object_get(poObjProps, "properties"); |
2206 | 0 | if (nullptr == poObjProps || |
2207 | 0 | json_object_get_type(poObjProps) != json_type_object) |
2208 | 0 | { |
2209 | 0 | return poFeature; |
2210 | 0 | } |
2211 | 0 | } |
2212 | | |
2213 | 0 | json_object_iter it; |
2214 | 0 | it.key = nullptr; |
2215 | 0 | it.val = nullptr; |
2216 | 0 | it.entry = nullptr; |
2217 | 0 | json_object_object_foreachC(poObjProps, it) |
2218 | 0 | { |
2219 | 0 | const int nField = poFDefn->GetFieldIndexCaseSensitive(it.key); |
2220 | 0 | if (nField < 0 && |
2221 | 0 | !(bFlattenNestedAttributes_ && it.val != nullptr && |
2222 | 0 | json_object_get_type(it.val) == json_type_object)) |
2223 | 0 | { |
2224 | 0 | CPLDebug("GeoJSON", "Cannot find field %s", it.key); |
2225 | 0 | } |
2226 | 0 | else |
2227 | 0 | { |
2228 | 0 | OGRGeoJSONReaderSetField(poLayer, poFeature, nField, it.key, |
2229 | 0 | it.val, bFlattenNestedAttributes_, |
2230 | 0 | chNestedAttributeSeparator_); |
2231 | 0 | } |
2232 | 0 | } |
2233 | 0 | } |
2234 | | |
2235 | | // Whether/how we should deal with foreign members |
2236 | 0 | if (!bAttributesSkip_ && |
2237 | 0 | eForeignMemberProcessing_ != ForeignMemberProcessing::NONE) |
2238 | 0 | { |
2239 | 0 | json_object_iter it; |
2240 | 0 | it.key = nullptr; |
2241 | 0 | it.val = nullptr; |
2242 | 0 | it.entry = nullptr; |
2243 | 0 | json_object_object_foreachC(poObj, it) |
2244 | 0 | { |
2245 | 0 | if (eForeignMemberProcessing_ == ForeignMemberProcessing::STAC && |
2246 | 0 | strcmp(it.key, "assets") == 0 && |
2247 | 0 | json_object_get_type(it.val) == json_type_object) |
2248 | 0 | { |
2249 | 0 | json_object_iter it2; |
2250 | 0 | it2.key = nullptr; |
2251 | 0 | it2.val = nullptr; |
2252 | 0 | it2.entry = nullptr; |
2253 | 0 | json_object_object_foreachC(it.val, it2) |
2254 | 0 | { |
2255 | 0 | if (json_object_get_type(it2.val) == json_type_object) |
2256 | 0 | { |
2257 | 0 | json_object_iter it3; |
2258 | 0 | it3.key = nullptr; |
2259 | 0 | it3.val = nullptr; |
2260 | 0 | it3.entry = nullptr; |
2261 | 0 | json_object_object_foreachC(it2.val, it3) |
2262 | 0 | { |
2263 | 0 | const std::string osFieldName = |
2264 | 0 | std::string("assets.") |
2265 | 0 | .append(it2.key) |
2266 | 0 | .append(".") |
2267 | 0 | .append(it3.key) |
2268 | 0 | .c_str(); |
2269 | 0 | const int nField = |
2270 | 0 | poFDefn->GetFieldIndexCaseSensitive( |
2271 | 0 | osFieldName.c_str()); |
2272 | 0 | if (nField < 0 && !(bFlattenNestedAttributes_ && |
2273 | 0 | it3.val != nullptr && |
2274 | 0 | json_object_get_type(it3.val) == |
2275 | 0 | json_type_object)) |
2276 | 0 | { |
2277 | 0 | CPLDebug("GeoJSON", "Cannot find field %s", |
2278 | 0 | osFieldName.c_str()); |
2279 | 0 | } |
2280 | 0 | else |
2281 | 0 | { |
2282 | 0 | OGRGeoJSONReaderSetField( |
2283 | 0 | poLayer, poFeature, nField, |
2284 | 0 | osFieldName.c_str(), it3.val, |
2285 | 0 | bFlattenNestedAttributes_, |
2286 | 0 | chNestedAttributeSeparator_); |
2287 | 0 | } |
2288 | 0 | } |
2289 | 0 | } |
2290 | 0 | } |
2291 | 0 | } |
2292 | 0 | else if (strcmp(it.key, "type") != 0 && strcmp(it.key, "id") != 0 && |
2293 | 0 | strcmp(it.key, "geometry") != 0 && |
2294 | 0 | strcmp(it.key, "bbox") != 0 && |
2295 | 0 | strcmp(it.key, "properties") != 0) |
2296 | 0 | { |
2297 | 0 | const int nField = poFDefn->GetFieldIndexCaseSensitive(it.key); |
2298 | 0 | if (nField < 0 && |
2299 | 0 | !(bFlattenNestedAttributes_ && it.val != nullptr && |
2300 | 0 | json_object_get_type(it.val) == json_type_object)) |
2301 | 0 | { |
2302 | 0 | CPLDebug("GeoJSON", "Cannot find field %s", it.key); |
2303 | 0 | } |
2304 | 0 | else |
2305 | 0 | { |
2306 | 0 | OGRGeoJSONReaderSetField(poLayer, poFeature, nField, it.key, |
2307 | 0 | it.val, bFlattenNestedAttributes_, |
2308 | 0 | chNestedAttributeSeparator_); |
2309 | 0 | } |
2310 | 0 | } |
2311 | 0 | } |
2312 | 0 | } |
2313 | |
|
2314 | 0 | if (!bAttributesSkip_ && nullptr == poObjProps) |
2315 | 0 | { |
2316 | 0 | json_object_iter it; |
2317 | 0 | it.key = nullptr; |
2318 | 0 | it.val = nullptr; |
2319 | 0 | it.entry = nullptr; |
2320 | 0 | json_object_object_foreachC(poObj, it) |
2321 | 0 | { |
2322 | 0 | const int nFldIndex = poFDefn->GetFieldIndexCaseSensitive(it.key); |
2323 | 0 | if (nFldIndex >= 0) |
2324 | 0 | { |
2325 | 0 | if (it.val) |
2326 | 0 | poFeature->SetField(nFldIndex, |
2327 | 0 | json_object_get_string(it.val)); |
2328 | 0 | else |
2329 | 0 | poFeature->SetFieldNull(nFldIndex); |
2330 | 0 | } |
2331 | 0 | } |
2332 | 0 | } |
2333 | | |
2334 | | /* -------------------------------------------------------------------- */ |
2335 | | /* Try to use feature-level ID if available */ |
2336 | | /* and of integral type. Otherwise, leave unset (-1) then index */ |
2337 | | /* in features sequence will be used as FID. */ |
2338 | | /* -------------------------------------------------------------------- */ |
2339 | 0 | json_object *poObjId = OGRGeoJSONFindMemberByName(poObj, "id"); |
2340 | 0 | if (nullptr != poObjId && bFeatureLevelIdAsFID_) |
2341 | 0 | { |
2342 | 0 | poFeature->SetFID(static_cast<GIntBig>(json_object_get_int64(poObjId))); |
2343 | 0 | } |
2344 | | |
2345 | | /* -------------------------------------------------------------------- */ |
2346 | | /* Handle the case where the special id is in a regular field. */ |
2347 | | /* -------------------------------------------------------------------- */ |
2348 | 0 | else if (nullptr != poObjId) |
2349 | 0 | { |
2350 | 0 | const int nIdx = poFDefn->GetFieldIndexCaseSensitive("id"); |
2351 | 0 | if (nIdx >= 0 && !poFeature->IsFieldSet(nIdx)) |
2352 | 0 | { |
2353 | 0 | poFeature->SetField(nIdx, json_object_get_string(poObjId)); |
2354 | 0 | } |
2355 | 0 | } |
2356 | | |
2357 | | /* -------------------------------------------------------------------- */ |
2358 | | /* Translate geometry sub-object of GeoJSON Feature. */ |
2359 | | /* -------------------------------------------------------------------- */ |
2360 | 0 | json_object *poObjGeom = nullptr; |
2361 | 0 | json_object *poTmp = poObj; |
2362 | 0 | json_object_iter it; |
2363 | 0 | it.key = nullptr; |
2364 | 0 | it.val = nullptr; |
2365 | 0 | it.entry = nullptr; |
2366 | 0 | json_object_object_foreachC(poTmp, it) |
2367 | 0 | { |
2368 | 0 | if (EQUAL(it.key, "geometry")) |
2369 | 0 | { |
2370 | 0 | if (it.val != nullptr) |
2371 | 0 | poObjGeom = it.val; |
2372 | | // Done. They had 'geometry':null. |
2373 | 0 | else |
2374 | 0 | return poFeature; |
2375 | 0 | } |
2376 | 0 | } |
2377 | | |
2378 | 0 | if (nullptr != poObjGeom) |
2379 | 0 | { |
2380 | | // NOTE: If geometry can not be parsed or read correctly |
2381 | | // then NULL geometry is assigned to a feature and |
2382 | | // geometry type for layer is classified as wkbUnknown. |
2383 | 0 | OGRGeometry *poGeometry = |
2384 | 0 | ReadGeometry(poObjGeom, poLayer->GetSpatialRef()); |
2385 | 0 | if (nullptr != poGeometry) |
2386 | 0 | { |
2387 | 0 | poFeature->SetGeometryDirectly(poGeometry); |
2388 | 0 | } |
2389 | 0 | } |
2390 | 0 | else |
2391 | 0 | { |
2392 | 0 | static bool bWarned = false; |
2393 | 0 | if (!bWarned) |
2394 | 0 | { |
2395 | 0 | bWarned = true; |
2396 | 0 | CPLDebug( |
2397 | 0 | "GeoJSON", |
2398 | 0 | "Non conformant Feature object. Missing \'geometry\' member."); |
2399 | 0 | } |
2400 | 0 | } |
2401 | |
|
2402 | 0 | return poFeature; |
2403 | 0 | } |
2404 | | |
2405 | | /************************************************************************/ |
2406 | | /* Extent getters */ |
2407 | | /************************************************************************/ |
2408 | | |
2409 | | bool OGRGeoJSONBaseReader::ExtentRead() const |
2410 | 0 | { |
2411 | 0 | return m_bExtentRead; |
2412 | 0 | } |
2413 | | |
2414 | | OGREnvelope3D OGRGeoJSONBaseReader::GetExtent3D() const |
2415 | 0 | { |
2416 | 0 | return m_oEnvelope3D; |
2417 | 0 | } |
2418 | | |
2419 | | /************************************************************************/ |
2420 | | /* ReadFeatureCollection() */ |
2421 | | /************************************************************************/ |
2422 | | |
2423 | | void OGRGeoJSONReader::ReadFeatureCollection(OGRGeoJSONLayer *poLayer, |
2424 | | json_object *poObj) |
2425 | 0 | { |
2426 | 0 | json_object *poObjFeatures = OGRGeoJSONFindMemberByName(poObj, "features"); |
2427 | 0 | if (nullptr == poObjFeatures) |
2428 | 0 | { |
2429 | 0 | CPLError(CE_Failure, CPLE_AppDefined, |
2430 | 0 | "Invalid FeatureCollection object. " |
2431 | 0 | "Missing \'features\' member."); |
2432 | 0 | return; |
2433 | 0 | } |
2434 | | |
2435 | 0 | if (json_type_array == json_object_get_type(poObjFeatures)) |
2436 | 0 | { |
2437 | 0 | const auto nFeatures = json_object_array_length(poObjFeatures); |
2438 | 0 | for (auto i = decltype(nFeatures){0}; i < nFeatures; ++i) |
2439 | 0 | { |
2440 | 0 | json_object *poObjFeature = |
2441 | 0 | json_object_array_get_idx(poObjFeatures, i); |
2442 | 0 | OGRFeature *poFeature = ReadFeature(poLayer, poObjFeature, nullptr); |
2443 | 0 | AddFeature(poLayer, poFeature); |
2444 | 0 | } |
2445 | 0 | } |
2446 | | |
2447 | | // Collect top objects except 'type' and the 'features' array. |
2448 | 0 | if (bStoreNativeData_) |
2449 | 0 | { |
2450 | 0 | json_object_iter it; |
2451 | 0 | it.key = nullptr; |
2452 | 0 | it.val = nullptr; |
2453 | 0 | it.entry = nullptr; |
2454 | 0 | CPLString osNativeData; |
2455 | 0 | json_object_object_foreachC(poObj, it) |
2456 | 0 | { |
2457 | 0 | if (strcmp(it.key, "type") == 0 || strcmp(it.key, "features") == 0) |
2458 | 0 | { |
2459 | 0 | continue; |
2460 | 0 | } |
2461 | 0 | if (osNativeData.empty()) |
2462 | 0 | osNativeData = "{ "; |
2463 | 0 | else |
2464 | 0 | osNativeData += ", "; |
2465 | 0 | json_object *poKey = json_object_new_string(it.key); |
2466 | 0 | osNativeData += json_object_to_json_string(poKey); |
2467 | 0 | json_object_put(poKey); |
2468 | 0 | osNativeData += ": "; |
2469 | 0 | osNativeData += json_object_to_json_string(it.val); |
2470 | 0 | } |
2471 | 0 | if (osNativeData.empty()) |
2472 | 0 | { |
2473 | 0 | osNativeData = "{ "; |
2474 | 0 | } |
2475 | 0 | osNativeData += " }"; |
2476 | |
|
2477 | 0 | osNativeData = "NATIVE_DATA=" + osNativeData; |
2478 | |
|
2479 | 0 | char *apszMetadata[3] = { |
2480 | 0 | const_cast<char *>(osNativeData.c_str()), |
2481 | 0 | const_cast<char *>("NATIVE_MEDIA_TYPE=application/vnd.geo+json"), |
2482 | 0 | nullptr}; |
2483 | |
|
2484 | 0 | poLayer->SetMetadata(apszMetadata, "NATIVE_DATA"); |
2485 | 0 | } |
2486 | 0 | } |
2487 | | |
2488 | | /************************************************************************/ |
2489 | | /* OGRGeoJSONGetExtent3D() */ |
2490 | | /************************************************************************/ |
2491 | | |
2492 | | bool OGRGeoJSONGetExtent3D(json_object *poObj, OGREnvelope3D *poEnvelope) |
2493 | 0 | { |
2494 | 0 | if (!poEnvelope || !poObj) |
2495 | 0 | { |
2496 | 0 | return false; |
2497 | 0 | } |
2498 | | |
2499 | | // poObjCoords can be an array of arrays, this lambda function will |
2500 | | // recursively parse the array |
2501 | 0 | std::function<bool(json_object *, OGREnvelope3D *)> fParseCoords; |
2502 | 0 | fParseCoords = [&fParseCoords](json_object *poObjCoordsIn, |
2503 | 0 | OGREnvelope3D *poEnvelopeIn) -> bool |
2504 | 0 | { |
2505 | 0 | if (json_type_array == json_object_get_type(poObjCoordsIn)) |
2506 | 0 | { |
2507 | 0 | const auto nItems = json_object_array_length(poObjCoordsIn); |
2508 | |
|
2509 | 0 | double dXVal = std::numeric_limits<double>::quiet_NaN(); |
2510 | 0 | double dYVal = std::numeric_limits<double>::quiet_NaN(); |
2511 | 0 | double dZVal = std::numeric_limits<double>::quiet_NaN(); |
2512 | |
|
2513 | 0 | for (auto i = decltype(nItems){0}; i < nItems; ++i) |
2514 | 0 | { |
2515 | | |
2516 | | // Get the i element |
2517 | 0 | json_object *poObjCoordsElement = |
2518 | 0 | json_object_array_get_idx(poObjCoordsIn, i); |
2519 | |
|
2520 | 0 | const json_type eType{json_object_get_type(poObjCoordsElement)}; |
2521 | | |
2522 | | // if it is an array, recurse |
2523 | 0 | if (json_type_array == eType) |
2524 | 0 | { |
2525 | 0 | if (!fParseCoords(poObjCoordsElement, poEnvelopeIn)) |
2526 | 0 | { |
2527 | 0 | return false; |
2528 | 0 | } |
2529 | 0 | } |
2530 | 0 | else if (json_type_double == eType || json_type_int == eType) |
2531 | 0 | { |
2532 | 0 | switch (i) |
2533 | 0 | { |
2534 | 0 | case 0: |
2535 | 0 | { |
2536 | 0 | dXVal = json_object_get_double(poObjCoordsElement); |
2537 | 0 | break; |
2538 | 0 | } |
2539 | 0 | case 1: |
2540 | 0 | { |
2541 | 0 | dYVal = json_object_get_double(poObjCoordsElement); |
2542 | 0 | break; |
2543 | 0 | } |
2544 | 0 | case 2: |
2545 | 0 | { |
2546 | 0 | dZVal = json_object_get_double(poObjCoordsElement); |
2547 | 0 | break; |
2548 | 0 | } |
2549 | 0 | default: |
2550 | 0 | return false; |
2551 | 0 | } |
2552 | 0 | } |
2553 | 0 | else |
2554 | 0 | { |
2555 | 0 | return false; |
2556 | 0 | } |
2557 | 0 | } |
2558 | | |
2559 | 0 | if (!std::isnan(dXVal) && !std::isnan(dYVal)) |
2560 | 0 | { |
2561 | 0 | if (std::isnan(dZVal)) |
2562 | 0 | { |
2563 | 0 | static_cast<OGREnvelope *>(poEnvelopeIn) |
2564 | 0 | ->Merge(dXVal, dYVal); |
2565 | 0 | } |
2566 | 0 | else |
2567 | 0 | { |
2568 | 0 | poEnvelopeIn->Merge(dXVal, dYVal, dZVal); |
2569 | 0 | } |
2570 | 0 | } |
2571 | |
|
2572 | 0 | return true; |
2573 | 0 | } |
2574 | 0 | else |
2575 | 0 | { |
2576 | 0 | return false; |
2577 | 0 | } |
2578 | 0 | }; |
2579 | | |
2580 | | // This function looks for "coordinates" and for "geometries" to handle |
2581 | | // geometry collections. It will recurse on itself to handle nested geometry. |
2582 | 0 | std::function<bool(json_object *, OGREnvelope3D *)> fParseGeometry; |
2583 | 0 | fParseGeometry = [&fParseGeometry, |
2584 | 0 | &fParseCoords](json_object *poObjIn, |
2585 | 0 | OGREnvelope3D *poEnvelopeIn) -> bool |
2586 | 0 | { |
2587 | | // Get the "coordinates" array from the JSON object |
2588 | 0 | json_object *poObjCoords = |
2589 | 0 | OGRGeoJSONFindMemberByName(poObjIn, "coordinates"); |
2590 | | |
2591 | | // Return if found and not an array |
2592 | 0 | if (poObjCoords && json_object_get_type(poObjCoords) != json_type_array) |
2593 | 0 | { |
2594 | 0 | return false; |
2595 | 0 | } |
2596 | 0 | else if (poObjCoords) |
2597 | 0 | { |
2598 | 0 | return fParseCoords(poObjCoords, poEnvelopeIn); |
2599 | 0 | } |
2600 | | |
2601 | | // Try "geometries" |
2602 | 0 | if (!poObjCoords) |
2603 | 0 | { |
2604 | 0 | poObjCoords = OGRGeoJSONFindMemberByName(poObjIn, "geometries"); |
2605 | 0 | } |
2606 | | |
2607 | | // Return if not found or not an array |
2608 | 0 | if (!poObjCoords || |
2609 | 0 | json_object_get_type(poObjCoords) != json_type_array) |
2610 | 0 | { |
2611 | 0 | return false; |
2612 | 0 | } |
2613 | 0 | else |
2614 | 0 | { |
2615 | | // Loop thgrough the geometries |
2616 | 0 | const auto nItems = json_object_array_length(poObjCoords); |
2617 | 0 | for (auto i = decltype(nItems){0}; i < nItems; ++i) |
2618 | 0 | { |
2619 | 0 | json_object *poObjGeometry = |
2620 | 0 | json_object_array_get_idx(poObjCoords, i); |
2621 | | |
2622 | | // Recurse |
2623 | 0 | if (!fParseGeometry(poObjGeometry, poEnvelopeIn)) |
2624 | 0 | { |
2625 | 0 | return false; |
2626 | 0 | } |
2627 | 0 | } |
2628 | 0 | return true; |
2629 | 0 | } |
2630 | 0 | }; |
2631 | |
|
2632 | 0 | return fParseGeometry(poObj, poEnvelope); |
2633 | 0 | } |