/
qgsabstractdatabaseproviderconnection.cpp
456 lines (383 loc) · 15.1 KB
/
qgsabstractdatabaseproviderconnection.cpp
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
/***************************************************************************
qgsabstractdatabaseproviderconnection.cpp - QgsAbstractDatabaseProviderConnection
---------------------
begin : 2.8.2019
copyright : (C) 2019 by Alessandro Pasotti
email : elpaso at itopen dot it
***************************************************************************
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
* *
***************************************************************************/
#include "qgsabstractdatabaseproviderconnection.h"
#include "qgsvectorlayer.h"
#include "qgsexception.h"
#include "qgslogger.h"
#include <QVariant>
#include <QObject>
QgsAbstractDatabaseProviderConnection::QgsAbstractDatabaseProviderConnection( const QString &name ):
QgsAbstractProviderConnection( name )
{
}
QgsAbstractDatabaseProviderConnection::QgsAbstractDatabaseProviderConnection( const QString &uri, const QVariantMap &configuration ):
QgsAbstractProviderConnection( uri, configuration )
{
}
QgsAbstractDatabaseProviderConnection::Capabilities QgsAbstractDatabaseProviderConnection::capabilities() const
{
return mCapabilities;
}
QgsAbstractDatabaseProviderConnection::GeometryColumnCapabilities QgsAbstractDatabaseProviderConnection::geometryColumnCapabilities()
{
return mGeometryColumnCapabilities;
}
QString QgsAbstractDatabaseProviderConnection::tableUri( const QString &schema, const QString &name ) const
{
Q_UNUSED( schema )
Q_UNUSED( name )
throw QgsProviderConnectionException( QObject::tr( "Operation 'tableUri' is not supported" ) );
}
///@cond PRIVATE
void QgsAbstractDatabaseProviderConnection::checkCapability( QgsAbstractDatabaseProviderConnection::Capability capability ) const
{
if ( ! mCapabilities.testFlag( capability ) )
{
static QMetaEnum metaEnum = QMetaEnum::fromType<QgsAbstractDatabaseProviderConnection::Capability>();
const QString capName { metaEnum.valueToKey( capability ) };
throw QgsProviderConnectionException( QObject::tr( "Operation '%1' is not supported for this connection" ).arg( capName ) );
}
}
QString QgsAbstractDatabaseProviderConnection::providerKey() const
{
return mProviderKey;
}
///@endcond
void QgsAbstractDatabaseProviderConnection::createVectorTable( const QString &schema,
const QString &name,
const QgsFields &fields,
QgsWkbTypes::Type wkbType,
const QgsCoordinateReferenceSystem &srs,
bool overwrite,
const QMap<QString, QVariant> *
options ) const
{
Q_UNUSED( schema );
Q_UNUSED( name );
Q_UNUSED( fields );
Q_UNUSED( srs );
Q_UNUSED( overwrite );
Q_UNUSED( options );
Q_UNUSED( wkbType );
throw QgsProviderConnectionException( QObject::tr( "Operation 'createVectorTable' is not supported" ) );
}
void QgsAbstractDatabaseProviderConnection::renameVectorTable( const QString &, const QString &, const QString & ) const
{
checkCapability( Capability::RenameVectorTable );
}
void QgsAbstractDatabaseProviderConnection::renameRasterTable( const QString &, const QString &, const QString & ) const
{
checkCapability( Capability::RenameRasterTable );
}
void QgsAbstractDatabaseProviderConnection::dropVectorTable( const QString &, const QString & ) const
{
checkCapability( Capability::DropVectorTable );
}
bool QgsAbstractDatabaseProviderConnection::tableExists( const QString &schema, const QString &name ) const
{
checkCapability( Capability::TableExists );
const QList<QgsAbstractDatabaseProviderConnection::TableProperty> constTables { tables( schema ) };
for ( const auto &t : constTables )
{
if ( t.tableName() == name )
{
return true;
}
}
return false;
}
void QgsAbstractDatabaseProviderConnection::dropRasterTable( const QString &, const QString & ) const
{
checkCapability( Capability::DropRasterTable );
}
void QgsAbstractDatabaseProviderConnection::createSchema( const QString & ) const
{
checkCapability( Capability::CreateSchema );
}
void QgsAbstractDatabaseProviderConnection::dropSchema( const QString &, bool ) const
{
checkCapability( Capability::DropSchema );
}
void QgsAbstractDatabaseProviderConnection::renameSchema( const QString &, const QString & ) const
{
checkCapability( Capability::RenameSchema );
}
QList<QList<QVariant>> QgsAbstractDatabaseProviderConnection::executeSql( const QString &sql, QgsFeedback *feedback ) const
{
return execSql( sql, feedback ).rows();
}
QgsAbstractDatabaseProviderConnection::QueryResult QgsAbstractDatabaseProviderConnection::execSql( const QString &, QgsFeedback * ) const
{
checkCapability( Capability::ExecuteSql );
return QueryResult();
}
void QgsAbstractDatabaseProviderConnection::vacuum( const QString &, const QString & ) const
{
checkCapability( Capability::Vacuum );
}
void QgsAbstractDatabaseProviderConnection::createSpatialIndex( const QString &, const QString &, const QgsAbstractDatabaseProviderConnection::SpatialIndexOptions & ) const
{
checkCapability( Capability::CreateSpatialIndex );
}
void QgsAbstractDatabaseProviderConnection::deleteSpatialIndex( const QString &, const QString &, const QString & ) const
{
checkCapability( Capability::DeleteSpatialIndex );
}
bool QgsAbstractDatabaseProviderConnection::spatialIndexExists( const QString &, const QString &, const QString & ) const
{
checkCapability( Capability::SpatialIndexExists );
return false;
}
void QgsAbstractDatabaseProviderConnection::deleteField( const QString &fieldName, const QString &schema, const QString &tableName, bool ) const
{
checkCapability( Capability::DeleteField );
QgsVectorLayer::LayerOptions options { false, false };
options.skipCrsValidation = true;
std::unique_ptr<QgsVectorLayer> vl { qgis::make_unique<QgsVectorLayer>( tableUri( schema, tableName ), QStringLiteral( "temp_layer" ), mProviderKey, options ) };
if ( ! vl->isValid() )
{
throw QgsProviderConnectionException( QObject::tr( "Could not create a vector layer for table '%1' in schema '%2'" )
.arg( tableName, schema ) );
}
if ( vl->fields().lookupField( fieldName ) == -1 )
{
throw QgsProviderConnectionException( QObject::tr( "Could not find field '%1' in table '%2' in schema '%3'" )
.arg( fieldName, tableName, schema ) );
}
if ( ! vl->dataProvider()->deleteAttributes( { vl->fields().lookupField( fieldName ) } ) )
{
throw QgsProviderConnectionException( QObject::tr( "Unknown error deleting field '%1' in table '%2' in schema '%3'" )
.arg( fieldName, tableName, schema ) );
}
}
void QgsAbstractDatabaseProviderConnection::addField( const QgsField &field, const QString &schema, const QString &tableName ) const
{
checkCapability( Capability::AddField );
QgsVectorLayer::LayerOptions options { false, false };
options.skipCrsValidation = true;
std::unique_ptr<QgsVectorLayer> vl( qgis::make_unique<QgsVectorLayer>( tableUri( schema, tableName ), QStringLiteral( "temp_layer" ), mProviderKey, options ) );
if ( ! vl->isValid() )
{
throw QgsProviderConnectionException( QObject::tr( "Could not create a vector layer for table '%1' in schema '%2'" )
.arg( tableName, schema ) );
}
if ( vl->fields().lookupField( field.name() ) != -1 )
{
throw QgsProviderConnectionException( QObject::tr( "Field '%1' in table '%2' in schema '%3' already exists" )
.arg( field.name(), tableName, schema ) );
}
if ( ! vl->dataProvider()->addAttributes( { field } ) )
{
throw QgsProviderConnectionException( QObject::tr( "Unknown error adding field '%1' in table '%2' in schema '%3'" )
.arg( field.name(), tableName, schema ) );
}
}
QList<QgsAbstractDatabaseProviderConnection::TableProperty> QgsAbstractDatabaseProviderConnection::tables( const QString &, const QgsAbstractDatabaseProviderConnection::TableFlags & ) const
{
checkCapability( Capability::Tables );
return QList<QgsAbstractDatabaseProviderConnection::TableProperty>();
}
QgsAbstractDatabaseProviderConnection::TableProperty QgsAbstractDatabaseProviderConnection::table( const QString &schema, const QString &name ) const
{
checkCapability( Capability::Tables );
const QList<QgsAbstractDatabaseProviderConnection::TableProperty> constTables { tables( schema ) };
for ( const auto &t : constTables )
{
if ( t.tableName() == name )
{
return t;
}
}
throw QgsProviderConnectionException( QObject::tr( "Table '%1' was not found in schema '%2'" )
.arg( name, schema ) );
}
QList<QgsAbstractDatabaseProviderConnection::TableProperty> QgsAbstractDatabaseProviderConnection::tablesInt( const QString &schema, const int flags ) const
{
return tables( schema, static_cast<QgsAbstractDatabaseProviderConnection::TableFlags>( flags ) );
}
QStringList QgsAbstractDatabaseProviderConnection::schemas( ) const
{
checkCapability( Capability::Schemas );
return QStringList();
}
QString QgsAbstractDatabaseProviderConnection::TableProperty::tableName() const
{
return mTableName;
}
void QgsAbstractDatabaseProviderConnection::TableProperty::setTableName( const QString &name )
{
mTableName = name;
}
void QgsAbstractDatabaseProviderConnection::TableProperty::addGeometryColumnType( const QgsWkbTypes::Type &type, const QgsCoordinateReferenceSystem &crs )
{
// Do not add the type if it's already present
const QgsAbstractDatabaseProviderConnection::TableProperty::GeometryColumnType toAdd { type, crs };
for ( const auto &t : qgis::as_const( mGeometryColumnTypes ) )
{
if ( t == toAdd )
{
return;
}
}
mGeometryColumnTypes.push_back( toAdd );
}
QList<QgsAbstractDatabaseProviderConnection::TableProperty::GeometryColumnType> QgsAbstractDatabaseProviderConnection::TableProperty::geometryColumnTypes() const
{
return mGeometryColumnTypes;
}
QgsFields QgsAbstractDatabaseProviderConnection::fields( const QString &schema, const QString &tableName ) const
{
QgsVectorLayer::LayerOptions options { false, true };
options.skipCrsValidation = true;
QgsVectorLayer vl { tableUri( schema, tableName ), QStringLiteral( "temp_layer" ), mProviderKey, options };
if ( vl.isValid() )
{
return vl.fields();
}
else
{
throw QgsProviderConnectionException( QObject::tr( "Error retrieving fields information for uri: %1" ).arg( vl.publicSource() ) );
}
}
QString QgsAbstractDatabaseProviderConnection::TableProperty::defaultName() const
{
QString n = mTableName;
if ( mGeometryColumnCount > 1 ) n += '.' + mGeometryColumn;
return n;
}
QgsAbstractDatabaseProviderConnection::TableProperty QgsAbstractDatabaseProviderConnection::TableProperty::at( int index ) const
{
TableProperty property;
Q_ASSERT( index >= 0 && index < mGeometryColumnTypes.size() );
property.mGeometryColumnTypes << mGeometryColumnTypes[ index ];
property.mSchema = mSchema;
property.mTableName = mTableName;
property.mGeometryColumn = mGeometryColumn;
property.mPkColumns = mPkColumns;
property.mGeometryColumnCount = mGeometryColumnCount;
property.mFlags = mFlags;
property.mComment = mComment;
property.mInfo = mInfo;
return property;
}
void QgsAbstractDatabaseProviderConnection::TableProperty::setFlag( const QgsAbstractDatabaseProviderConnection::TableFlag &flag )
{
mFlags.setFlag( flag );
}
int QgsAbstractDatabaseProviderConnection::TableProperty::maxCoordinateDimensions() const
{
int res = 0;
for ( const TableProperty::GeometryColumnType &ct : qgis::as_const( mGeometryColumnTypes ) )
{
res = std::max( res, QgsWkbTypes::coordDimensions( ct.wkbType ) );
}
return res;
}
bool QgsAbstractDatabaseProviderConnection::TableProperty::operator==( const QgsAbstractDatabaseProviderConnection::TableProperty &other ) const
{
return mSchema == other.mSchema &&
mTableName == other.mTableName &&
mGeometryColumn == other.mGeometryColumn &&
mGeometryColumnCount == other.mGeometryColumnCount &&
mPkColumns == other.mPkColumns &&
mFlags == other.mFlags &&
mComment == other.mComment &&
mInfo == other.mInfo;
}
void QgsAbstractDatabaseProviderConnection::TableProperty::setGeometryColumnTypes( const QList<QgsAbstractDatabaseProviderConnection::TableProperty::GeometryColumnType> &columnTypes )
{
mGeometryColumnTypes = columnTypes;
}
int QgsAbstractDatabaseProviderConnection::TableProperty::geometryColumnCount() const
{
return mGeometryColumnCount;
}
void QgsAbstractDatabaseProviderConnection::TableProperty::setGeometryColumnCount( int geometryColumnCount )
{
mGeometryColumnCount = geometryColumnCount;
}
QVariantMap QgsAbstractDatabaseProviderConnection::TableProperty::info() const
{
return mInfo;
}
void QgsAbstractDatabaseProviderConnection::TableProperty::setInfo( const QVariantMap &info )
{
mInfo = info;
}
QString QgsAbstractDatabaseProviderConnection::TableProperty::comment() const
{
return mComment;
}
void QgsAbstractDatabaseProviderConnection::TableProperty::setComment( const QString &comment )
{
mComment = comment;
}
QgsAbstractDatabaseProviderConnection::TableFlags QgsAbstractDatabaseProviderConnection::TableProperty::flags() const
{
return mFlags;
}
void QgsAbstractDatabaseProviderConnection::TableProperty::setFlags( const QgsAbstractDatabaseProviderConnection::TableFlags &flags )
{
mFlags = flags;
}
QList<QgsCoordinateReferenceSystem> QgsAbstractDatabaseProviderConnection::TableProperty::crsList() const
{
QList<QgsCoordinateReferenceSystem> crss;
for ( const auto &t : qgis::as_const( mGeometryColumnTypes ) )
{
crss.push_back( t.crs );
}
return crss;
}
QStringList QgsAbstractDatabaseProviderConnection::TableProperty::primaryKeyColumns() const
{
return mPkColumns;
}
void QgsAbstractDatabaseProviderConnection::TableProperty::setPrimaryKeyColumns( const QStringList &pkColumns )
{
mPkColumns = pkColumns;
}
QString QgsAbstractDatabaseProviderConnection::TableProperty::geometryColumn() const
{
return mGeometryColumn;
}
void QgsAbstractDatabaseProviderConnection::TableProperty::setGeometryColumn( const QString &geometryColumn )
{
mGeometryColumn = geometryColumn;
}
QString QgsAbstractDatabaseProviderConnection::TableProperty::schema() const
{
return mSchema;
}
void QgsAbstractDatabaseProviderConnection::TableProperty::setSchema( const QString &schema )
{
mSchema = schema;
}
QStringList QgsAbstractDatabaseProviderConnection::QueryResult::columns() const
{
return mColumns;
}
QList<QList<QVariant> > QgsAbstractDatabaseProviderConnection::QueryResult::rows() const
{
return mRows;
}
void QgsAbstractDatabaseProviderConnection::QueryResult::appendColumn( const QString &columnName )
{
mColumns.push_back( columnName );
}
void QgsAbstractDatabaseProviderConnection::QueryResult::appendRow( const QList<QVariant> &row )
{
mRows.push_back( row );
}