QGIS API Documentation 3.37.0-Master (684a802617f)
Loading...
Searching...
No Matches
qgsfilterrestorer.cpp
Go to the documentation of this file.
1/***************************************************************************
2 qgsowsserver.cpp
3 -------------------
4 begin : February 27, 2012
5 copyright : (C) 2012 by René-Luc D'Hont & Marco Hugentobler
6 email : rldhont at 3liz dot com
7 ***************************************************************************/
8
9/***************************************************************************
10 * *
11 * This program is free software; you can redistribute it and/or modify *
12 * it under the terms of the GNU General Public License as published by *
13 * the Free Software Foundation; either version 2 of the License, or *
14 * (at your option) any later version. *
15 * *
16 ***************************************************************************/
17
18#include "qgsfilterrestorer.h"
19#include "qgsmessagelog.h"
20#include "qgsvectorlayer.h"
21
22#ifdef HAVE_SERVER_PYTHON_PLUGINS
23#include "qgsaccesscontrol.h"
24#endif
25
27#ifdef HAVE_SERVER_PYTHON_PLUGINS
29 QHash<QgsMapLayer *, QString> &originalLayerFilters )
30{
31 if ( QgsVectorLayer *layer = qobject_cast<QgsVectorLayer *>( mapLayer ) )
32 {
33 QString sql = accessControl->extraSubsetString( layer );
34 if ( !sql.isEmpty() )
35 {
36 if ( !originalLayerFilters.contains( layer ) )
37 {
38 originalLayerFilters.insert( layer, layer->subsetString() );
39 }
40 if ( !layer->subsetString().isEmpty() )
41 {
42 sql.prepend( ") AND (" );
43 sql.append( ")" );
44 sql.prepend( layer->subsetString() );
45 sql.prepend( "(" );
46 }
47 if ( !layer->setSubsetString( sql ) )
48 {
49 QgsMessageLog::logMessage( QStringLiteral( "Layer does not support Subset String" ) );
50 }
51 }
52 }
53}
54
56{
57 if ( QgsVectorLayer *layer = qobject_cast<QgsVectorLayer *>( mapLayer ) )
58 {
59 QString sql = accessControl->extraSubsetString( layer );
60 if ( !sql.isEmpty() )
61 {
62 if ( !layer->subsetString().isEmpty() )
63 {
64 sql.prepend( ") AND (" );
65 sql.append( ")" );
66 sql.prepend( layer->subsetString() );
67 sql.prepend( "(" );
68 }
69 if ( !layer->setSubsetString( sql ) )
70 {
71 QgsMessageLog::logMessage( QStringLiteral( "Layer does not support Subset String" ) );
72 }
73 }
74 }
75}
76#endif
77
79void QgsOWSServerFilterRestorer::restoreLayerFilters( const QHash<QgsMapLayer *, QString> &filterMap )
80{
81 QHash<QgsMapLayer *, QString>::const_iterator filterIt = filterMap.constBegin();
82 for ( ; filterIt != filterMap.constEnd(); ++filterIt )
83 {
84 QgsVectorLayer *filteredLayer = qobject_cast<QgsVectorLayer *>( filterIt.key() );
85 if ( filteredLayer )
86 {
87 if ( !filteredLayer->setSubsetString( filterIt.value() ) )
88 {
89 QgsMessageLog::logMessage( QStringLiteral( "Layer does not support Subset String" ) );
90 }
91 }
92 }
93}
A helper class that centralizes restrictions given by all the access control filter plugins.
QString extraSubsetString(const QgsVectorLayer *layer) const
Returns an additional subset string (typically SQL) filter.
Base class for all map layer types.
Definition qgsmaplayer.h:75
static void logMessage(const QString &message, const QString &tag=QString(), Qgis::MessageLevel level=Qgis::MessageLevel::Warning, bool notifyUser=true)
Adds a message to the log instance (and creates it if necessary).
static void applyAccessControlLayerFilters(const QgsAccessControl *accessControl, QgsMapLayer *mapLayer, QHash< QgsMapLayer *, QString > &originalLayerFilters)
Apply filter from AccessControl.
void restoreLayerFilters(const QHash< QgsMapLayer *, QString > &filterMap)
Apply filter from AccessControal.
Represents a vector layer which manages a vector based data sets.
virtual bool setSubsetString(const QString &subset)
Sets the string (typically sql) used to define a subset of the layer.