/src/gdal/ogr/ogrsf_frmts/amigocloud/ogramigocloudresultlayer.cpp
Line | Count | Source (jump to first uncovered line) |
1 | | /****************************************************************************** |
2 | | * |
3 | | * Project: AmigoCloud Translator |
4 | | * Purpose: Implements OGRAmigoCloudResultLayer class. |
5 | | * Author: Victor Chernetsky, <victor at amigocloud dot com> |
6 | | * |
7 | | ****************************************************************************** |
8 | | * Copyright (c) 2015, Victor Chernetsky, <victor at amigocloud dot com> |
9 | | * |
10 | | * SPDX-License-Identifier: MIT |
11 | | ****************************************************************************/ |
12 | | |
13 | | #include "ogr_amigocloud.h" |
14 | | |
15 | | /************************************************************************/ |
16 | | /* OGRAmigoCloudResultLayer() */ |
17 | | /************************************************************************/ |
18 | | |
19 | | OGRAmigoCloudResultLayer::OGRAmigoCloudResultLayer( |
20 | | OGRAmigoCloudDataSource *poDSIn, const char *pszRawQueryIn) |
21 | 108 | : OGRAmigoCloudLayer(poDSIn) |
22 | 108 | { |
23 | 108 | osBaseSQL = pszRawQueryIn; |
24 | 108 | SetDescription("result"); |
25 | 108 | poFirstFeature = nullptr; |
26 | 108 | } |
27 | | |
28 | | /************************************************************************/ |
29 | | /* ~OGRAmigoCloudResultLayer() */ |
30 | | /************************************************************************/ |
31 | | |
32 | | OGRAmigoCloudResultLayer::~OGRAmigoCloudResultLayer() |
33 | | |
34 | 108 | { |
35 | 108 | delete poFirstFeature; |
36 | 108 | } |
37 | | |
38 | | /************************************************************************/ |
39 | | /* GetLayerDefnInternal() */ |
40 | | /************************************************************************/ |
41 | | |
42 | | OGRFeatureDefn * |
43 | | OGRAmigoCloudResultLayer::GetLayerDefnInternal(json_object *poObjIn) |
44 | 0 | { |
45 | 0 | if (poFeatureDefn != nullptr) |
46 | 0 | return poFeatureDefn; |
47 | | |
48 | 0 | EstablishLayerDefn("result", poObjIn); |
49 | |
|
50 | 0 | return poFeatureDefn; |
51 | 0 | } |
52 | | |
53 | | /************************************************************************/ |
54 | | /* GetNextRawFeature() */ |
55 | | /************************************************************************/ |
56 | | |
57 | | OGRFeature *OGRAmigoCloudResultLayer::GetNextRawFeature() |
58 | 108 | { |
59 | 108 | if (poFirstFeature) |
60 | 0 | { |
61 | 0 | OGRFeature *poRet = poFirstFeature; |
62 | 0 | poFirstFeature = nullptr; |
63 | 0 | return poRet; |
64 | 0 | } |
65 | 108 | else |
66 | 108 | return OGRAmigoCloudLayer::GetNextRawFeature(); |
67 | 108 | } |
68 | | |
69 | | /************************************************************************/ |
70 | | /* IsOK() */ |
71 | | /************************************************************************/ |
72 | | |
73 | | int OGRAmigoCloudResultLayer::IsOK() |
74 | 108 | { |
75 | 108 | CPLErrorReset(); |
76 | 108 | poFirstFeature = GetNextFeature(); |
77 | 108 | return CPLGetLastErrorType() == 0; |
78 | 108 | } |
79 | | |
80 | | /************************************************************************/ |
81 | | /* GetSRS_SQL() */ |
82 | | /************************************************************************/ |
83 | | |
84 | | CPLString OGRAmigoCloudResultLayer::GetSRS_SQL(const char *pszGeomCol) |
85 | 0 | { |
86 | 0 | CPLString osSQL; |
87 | 0 | CPLString osLimitedSQL; |
88 | |
|
89 | 0 | size_t nPos = osBaseSQL.ifind(" LIMIT "); |
90 | 0 | if (nPos != std::string::npos) |
91 | 0 | { |
92 | 0 | osLimitedSQL = osBaseSQL; |
93 | 0 | size_t nSize = osLimitedSQL.size(); |
94 | 0 | for (size_t i = nPos + strlen(" LIMIT "); i < nSize; i++) |
95 | 0 | { |
96 | 0 | if (osLimitedSQL[i] == ' ' && osLimitedSQL[i - 1] == '0') |
97 | 0 | { |
98 | 0 | osLimitedSQL[i - 1] = '1'; |
99 | 0 | break; |
100 | 0 | } |
101 | 0 | osLimitedSQL[i] = '0'; |
102 | 0 | } |
103 | 0 | } |
104 | 0 | else |
105 | 0 | osLimitedSQL.Printf("%s LIMIT 1", osBaseSQL.c_str()); |
106 | | |
107 | | /* Assuming that the SRID of the first non-NULL geometry applies */ |
108 | | /* to geometries of all rows. */ |
109 | 0 | osSQL.Printf("SELECT srid, srtext FROM spatial_ref_sys WHERE srid IN " |
110 | 0 | "(SELECT ST_SRID(%s) FROM (%s) ogr_subselect)", |
111 | 0 | OGRAMIGOCLOUDEscapeIdentifier(pszGeomCol).c_str(), |
112 | 0 | osLimitedSQL.c_str()); |
113 | |
|
114 | 0 | return osSQL; |
115 | 0 | } |