/
qgswfsserver.cpp
2203 lines (1996 loc) · 78 KB
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qgswfsserver.cpp
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/***************************************************************************
qgswfsserver.cpp
-------------------
begin : February 27, 2012
copyright : (C) 2012 by René-Luc D'Hont & Marco Hugentobler
email : rldhont at 3liz dot com
***************************************************************************/
/***************************************************************************
* *
* 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 "qgswfsserver.h"
#include "qgscrscache.h"
#include "qgsfield.h"
#include "qgsexpression.h"
#include "qgsgeometry.h"
#include "qgsmaplayer.h"
#include "qgsmaplayerregistry.h"
#include "qgsmaprenderer.h"
#include "qgsmaptopixel.h"
#include "qgsmessagelog.h"
#include "qgspallabeling.h"
#include "qgsproject.h"
#include "qgsrasterlayer.h"
#include "qgsscalecalculator.h"
#include "qgscoordinatereferencesystem.h"
#include "qgsvectordataprovider.h"
#include "qgsvectorlayer.h"
#include "qgsmapserviceexception.h"
#include "qgssymbolv2.h"
#include "qgslegendmodel.h"
#include "qgscomposerlegenditem.h"
#include "qgsrequesthandler.h"
#include "qgsogcutils.h"
#include "qgsaccesscontrol.h"
#include "qgsjsonutils.h"
#include <QImage>
#include <QPainter>
#include <QStringList>
#include <QTextStream>
#include <QDir>
#include <QSharedPointer>
//for printing
#include "qgscomposition.h"
#include <QBuffer>
#include <QPrinter>
#include <QSvgGenerator>
#include <QUrl>
#include <QPaintEngine>
#ifndef Q_OS_WIN
#include <netinet/in.h>
#else
#include <winsock.h>
#endif
static const QString WFS_NAMESPACE = "http://www.opengis.net/wfs";
static const QString GML_NAMESPACE = "http://www.opengis.net/gml";
static const QString OGC_NAMESPACE = "http://www.opengis.net/ogc";
static const QString QGS_NAMESPACE = "http://www.qgis.org/gml";
QgsWFSServer::QgsWFSServer(
const QString& configFilePath
, QMap<QString, QString> ¶meters
, QgsWFSProjectParser* cp
, QgsRequestHandler* rh
#ifdef HAVE_SERVER_PYTHON_PLUGINS
, const QgsAccessControl* accessControl
#endif
)
: QgsOWSServer(
configFilePath
, parameters
, rh
#ifdef HAVE_SERVER_PYTHON_PLUGINS
, accessControl
#endif
)
, mWithGeom( true )
, mConfigParser( cp )
{
}
QgsWFSServer::QgsWFSServer()
: QgsOWSServer(
QString()
, QMap<QString, QString>()
, nullptr
#ifdef HAVE_SERVER_PYTHON_PLUGINS
, nullptr
#endif
)
, mWithGeom( true )
, mConfigParser( nullptr )
{
}
QgsWFSServer::~QgsWFSServer()
{
}
void QgsWFSServer::executeRequest()
{
if ( !mConfigParser && !mRequestHandler )
{
return;
}
//request type
QString request = mParameters.value( "REQUEST" );
if ( request.isEmpty() )
{
//do some error handling
QgsMessageLog::logMessage( "unable to find 'REQUEST' parameter, exiting..." );
mRequestHandler->setServiceException( QgsMapServiceException( "OperationNotSupported", "Please check the value of the REQUEST parameter" ) );
return;
}
if ( request.compare( "GetCapabilities", Qt::CaseInsensitive ) == 0 )
{
QDomDocument capabilitiesDocument;
try
{
capabilitiesDocument = getCapabilities();
}
catch ( QgsMapServiceException& ex )
{
mRequestHandler->setServiceException( ex );
return;
}
QgsMessageLog::logMessage( "Setting GetCapabilities response" );
mRequestHandler->setGetCapabilitiesResponse( capabilitiesDocument );
return;
}
else if ( request.compare( "DescribeFeatureType", Qt::CaseInsensitive ) == 0 )
{
QDomDocument describeDocument;
try
{
describeDocument = describeFeatureType();
}
catch ( QgsMapServiceException& ex )
{
mRequestHandler->setServiceException( ex );
return;
}
QgsMessageLog::logMessage( "Setting GetCapabilities response" );
mRequestHandler->setGetCapabilitiesResponse( describeDocument );
return;
}
else if ( request.compare( "GetFeature", Qt::CaseInsensitive ) == 0 )
{
//output format for GetFeature
QString outputFormat = mParameters.value( "OUTPUTFORMAT" );
try
{
getFeature( *mRequestHandler, outputFormat );
}
catch ( QgsMapServiceException& ex )
{
mRequestHandler->setServiceException( ex );
}
return;
}
else if ( request.compare( "Transaction", Qt::CaseInsensitive ) == 0 )
{
QDomDocument transactionDocument;
try
{
transactionDocument = transaction( mParameters.value( "REQUEST_BODY" ) );
}
catch ( QgsMapServiceException& ex )
{
mRequestHandler->setServiceException( ex );
return;
}
QgsMessageLog::logMessage( "Setting Transaction response" );
mRequestHandler->setGetCapabilitiesResponse( transactionDocument );
return;
}
}
QDomDocument QgsWFSServer::getCapabilities()
{
QgsMessageLog::logMessage( "Entering." );
QDomDocument doc;
//wfs:WFS_Capabilities element
QDomElement wfsCapabilitiesElement = doc.createElement( "WFS_Capabilities"/*wms:WFS_Capabilities*/ );
wfsCapabilitiesElement.setAttribute( "xmlns", WFS_NAMESPACE );
wfsCapabilitiesElement.setAttribute( "xmlns:xsi", "http://www.w3.org/2001/XMLSchema-instance" );
wfsCapabilitiesElement.setAttribute( "xsi:schemaLocation", WFS_NAMESPACE + " http://schemas.opengis.net/wfs/1.0.0/WFS-capabilities.xsd" );
wfsCapabilitiesElement.setAttribute( "xmlns:ogc", OGC_NAMESPACE );
wfsCapabilitiesElement.setAttribute( "xmlns:gml", GML_NAMESPACE );
wfsCapabilitiesElement.setAttribute( "xmlns:ows", "http://www.opengis.net/ows" );
wfsCapabilitiesElement.setAttribute( "xmlns:xlink", "http://www.w3.org/1999/xlink" );
wfsCapabilitiesElement.setAttribute( "version", "1.0.0" );
wfsCapabilitiesElement.setAttribute( "updateSequence", "0" );
doc.appendChild( wfsCapabilitiesElement );
if ( mConfigParser )
{
mConfigParser->serviceCapabilities( wfsCapabilitiesElement, doc );
}
//wfs:Capability element
QDomElement capabilityElement = doc.createElement( "Capability"/*wfs:Capability*/ );
wfsCapabilitiesElement.appendChild( capabilityElement );
//wfs:Request element
QDomElement requestElement = doc.createElement( "Request"/*wfs:Request*/ );
capabilityElement.appendChild( requestElement );
//wfs:GetCapabilities
QDomElement getCapabilitiesElement = doc.createElement( "GetCapabilities"/*wfs:GetCapabilities*/ );
requestElement.appendChild( getCapabilitiesElement );
QDomElement dcpTypeElement = doc.createElement( "DCPType"/*wfs:DCPType*/ );
getCapabilitiesElement.appendChild( dcpTypeElement );
QDomElement httpElement = doc.createElement( "HTTP"/*wfs:HTTP*/ );
dcpTypeElement.appendChild( httpElement );
//Prepare url
QString hrefString;
if ( mConfigParser )
{
hrefString = mConfigParser->wfsServiceUrl();
if ( hrefString.isEmpty() )
{
hrefString = mConfigParser->serviceUrl();
}
}
if ( hrefString.isEmpty() )
{
hrefString = serviceUrl();
}
//only Get supported for the moment
QDomElement getElement = doc.createElement( "Get"/*wfs:Get*/ );
httpElement.appendChild( getElement );
getElement.setAttribute( "onlineResource", hrefString );
QDomElement getCapabilitiesDhcTypePostElement = dcpTypeElement.cloneNode().toElement();//this is the same as for 'GetCapabilities'
getCapabilitiesDhcTypePostElement.firstChild().firstChild().toElement().setTagName( "Post" );
getCapabilitiesElement.appendChild( getCapabilitiesDhcTypePostElement );
//wfs:DescribeFeatureType
QDomElement describeFeatureTypeElement = doc.createElement( "DescribeFeatureType"/*wfs:DescribeFeatureType*/ );
requestElement.appendChild( describeFeatureTypeElement );
QDomElement schemaDescriptionLanguageElement = doc.createElement( "SchemaDescriptionLanguage"/*wfs:SchemaDescriptionLanguage*/ );
describeFeatureTypeElement.appendChild( schemaDescriptionLanguageElement );
QDomElement xmlSchemaElement = doc.createElement( "XMLSCHEMA"/*wfs:XMLSCHEMA*/ );
schemaDescriptionLanguageElement.appendChild( xmlSchemaElement );
QDomElement describeFeatureTypeDhcTypeElement = dcpTypeElement.cloneNode().toElement();//this is the same as for 'GetCapabilities'
describeFeatureTypeElement.appendChild( describeFeatureTypeDhcTypeElement );
QDomElement describeFeatureTypeDhcTypePostElement = dcpTypeElement.cloneNode().toElement();//this is the same as for 'GetCapabilities'
describeFeatureTypeDhcTypePostElement.firstChild().firstChild().toElement().setTagName( "Post" );
describeFeatureTypeElement.appendChild( describeFeatureTypeDhcTypePostElement );
//wfs:GetFeature
QDomElement getFeatureElement = doc.createElement( "GetFeature"/*wfs:GetFeature*/ );
requestElement.appendChild( getFeatureElement );
QDomElement getFeatureFormatElement = doc.createElement( "ResultFormat" );/*wfs:ResultFormat*/
getFeatureElement.appendChild( getFeatureFormatElement );
QDomElement gmlFormatElement = doc.createElement( "GML2" );/*wfs:GML2*/
getFeatureFormatElement.appendChild( gmlFormatElement );
QDomElement gml3FormatElement = doc.createElement( "GML3" );/*wfs:GML3*/
getFeatureFormatElement.appendChild( gml3FormatElement );
QDomElement geojsonFormatElement = doc.createElement( "GeoJSON" );/*wfs:GeoJSON*/
getFeatureFormatElement.appendChild( geojsonFormatElement );
QDomElement getFeatureDhcTypeGetElement = dcpTypeElement.cloneNode().toElement();//this is the same as for 'GetCapabilities'
getFeatureElement.appendChild( getFeatureDhcTypeGetElement );
QDomElement getFeatureDhcTypePostElement = dcpTypeElement.cloneNode().toElement();//this is the same as for 'GetCapabilities'
getFeatureDhcTypePostElement.firstChild().firstChild().toElement().setTagName( "Post" );
getFeatureElement.appendChild( getFeatureDhcTypePostElement );
//wfs:Transaction
QDomElement transactionElement = doc.createElement( "Transaction"/*wfs:Transaction*/ );
requestElement.appendChild( transactionElement );
QDomElement transactionDhcTypeElement = dcpTypeElement.cloneNode().toElement();//this is the same as for 'GetCapabilities'
transactionDhcTypeElement.firstChild().firstChild().toElement().setTagName( "Post" );
transactionElement.appendChild( transactionDhcTypeElement );
//wfs:FeatureTypeList element
QDomElement featureTypeListElement = doc.createElement( "FeatureTypeList"/*wfs:FeatureTypeList*/ );
wfsCapabilitiesElement.appendChild( featureTypeListElement );
//wfs:Operations element
QDomElement operationsElement = doc.createElement( "Operations"/*wfs:Operations*/ );
featureTypeListElement.appendChild( operationsElement );
//wfs:Query element
QDomElement queryElement = doc.createElement( "Query"/*wfs:Query*/ );
operationsElement.appendChild( queryElement );
/*
* Adding layer liste in featureTypeListElement
*/
if ( mConfigParser )
{
mConfigParser->featureTypeList( featureTypeListElement, doc );
}
/*
* Adding ogc:Filter_Capabilities in capabilityElement
*/
//ogc:Filter_Capabilities element
QDomElement filterCapabilitiesElement = doc.createElement( "ogc:Filter_Capabilities"/*ogc:Filter_Capabilities*/ );
wfsCapabilitiesElement.appendChild( filterCapabilitiesElement );
QDomElement spatialCapabilitiesElement = doc.createElement( "ogc:Spatial_Capabilities"/*ogc:Spatial_Capabilities*/ );
filterCapabilitiesElement.appendChild( spatialCapabilitiesElement );
QDomElement spatialOperatorsElement = doc.createElement( "ogc:Spatial_Operators"/*ogc:Spatial_Operators*/ );
spatialCapabilitiesElement.appendChild( spatialOperatorsElement );
spatialOperatorsElement.appendChild( doc.createElement( "ogc:BBOX"/*ogc:BBOX*/ ) );
spatialOperatorsElement.appendChild( doc.createElement( "ogc:Disjoint"/*ogc:Disjoint*/ ) );
spatialOperatorsElement.appendChild( doc.createElement( "ogc:Intersect"/*ogc:Intersects*/ ) );
spatialOperatorsElement.appendChild( doc.createElement( "ogc:Touches"/*ogc:Touches*/ ) );
spatialOperatorsElement.appendChild( doc.createElement( "ogc:Crosses"/*ogc:Crosses*/ ) );
spatialOperatorsElement.appendChild( doc.createElement( "ogc:Contains"/*ogc:Contains*/ ) );
spatialOperatorsElement.appendChild( doc.createElement( "ogc:Overlaps"/*ogc:Overlaps*/ ) );
spatialOperatorsElement.appendChild( doc.createElement( "ogc:Within"/*ogc:Within*/ ) );
QDomElement scalarCapabilitiesElement = doc.createElement( "ogc:Scalar_Capabilities"/*ogc:Scalar_Capabilities*/ );
filterCapabilitiesElement.appendChild( scalarCapabilitiesElement );
QDomElement comparisonOperatorsElement = doc.createElement( "ogc:Comparison_Operators"/*ogc:Comparison_Operators*/ );
scalarCapabilitiesElement.appendChild( comparisonOperatorsElement );
comparisonOperatorsElement.appendChild( doc.createElement( "ogc:Simple_Comparisons"/*ogc:Simple_Comparisons*/ ) );
comparisonOperatorsElement.appendChild( doc.createElement( "ogc:Between"/*ogc:Between*/ ) );
comparisonOperatorsElement.appendChild( doc.createElement( "ogc:Like"/*ogc:Like*/ ) );
return doc;
}
QDomDocument QgsWFSServer::describeFeatureType()
{
QgsMessageLog::logMessage( "Entering." );
QDomDocument doc;
//xsd:schema
QDomElement schemaElement = doc.createElement( "schema"/*xsd:schema*/ );
schemaElement.setAttribute( "xmlns", "http://www.w3.org/2001/XMLSchema" );
schemaElement.setAttribute( "xmlns:xsd", "http://www.w3.org/2001/XMLSchema" );
schemaElement.setAttribute( "xmlns:ogc", OGC_NAMESPACE );
schemaElement.setAttribute( "xmlns:gml", GML_NAMESPACE );
schemaElement.setAttribute( "xmlns:qgs", QGS_NAMESPACE );
schemaElement.setAttribute( "targetNamespace", QGS_NAMESPACE );
schemaElement.setAttribute( "elementFormDefault", "qualified" );
schemaElement.setAttribute( "version", "1.0" );
doc.appendChild( schemaElement );
//xsd:import
QDomElement importElement = doc.createElement( "import"/*xsd:import*/ );
importElement.setAttribute( "namespace", GML_NAMESPACE );
importElement.setAttribute( "schemaLocation", "http://schemas.opengis.net/gml/2.1.2/feature.xsd" );
schemaElement.appendChild( importElement );
//defining typename
QString typeName = "";
QDomDocument queryDoc;
QString errorMsg;
if ( queryDoc.setContent( mParameters.value( "REQUEST_BODY" ), true, &errorMsg ) )
{
//read doc
QDomElement queryDocElem = queryDoc.documentElement();
QDomNodeList docChildNodes = queryDocElem.childNodes();
if ( docChildNodes.size() )
{
for ( int i = 0; i < docChildNodes.size(); i++ )
{
QDomElement docChildElem = docChildNodes.at( i ).toElement();
if ( docChildElem.tagName() == "TypeName" )
{
if ( typeName == "" )
typeName = docChildElem.text();
else
typeName += "," + docChildElem.text();
}
}
}
mConfigParser->describeFeatureType( typeName, schemaElement, doc );
}
else
{
//read TYPENAME
QMap<QString, QString>::const_iterator type_name_it = mParameters.constFind( "TYPENAME" );
if ( type_name_it != mParameters.constEnd() )
{
typeName = type_name_it.value();
}
mConfigParser->describeFeatureType( typeName, schemaElement, doc );
}
return doc;
}
int QgsWFSServer::getFeature( QgsRequestHandler& request, const QString& format )
{
QgsMessageLog::logMessage( "Info format is:" + format );
QStringList wfsLayersId = mConfigParser->wfsLayers();
QList<QgsMapLayer*> layerList;
QgsMapLayer* currentLayer = nullptr;
QgsCoordinateReferenceSystem layerCrs;
QgsRectangle searchRect( 0, 0, 0, 0 );
mErrors = QStringList();
mTypeNames = QStringList();
long maxFeatures = 0;
bool hasFeatureLimit = false;
long startIndex = 0;
long featureCounter = 0;
int layerPrec = 8;
long featCounter = 0;
QgsExpressionContext expressionContext;
expressionContext << QgsExpressionContextUtils::globalScope()
<< QgsExpressionContextUtils::projectScope();
QDomDocument doc;
QString errorMsg;
//scoped pointer to restore all original layer filters (subsetStrings) when pointer goes out of scope
//there's LOTS of potential exit paths here, so we avoid having to restore the filters manually
QScopedPointer< QgsOWSServerFilterRestorer > filterRestorer( new QgsOWSServerFilterRestorer() );
if ( doc.setContent( mParameters.value( "REQUEST_BODY" ), true, &errorMsg ) )
{
QDomElement docElem = doc.documentElement();
if ( docElem.hasAttribute( "maxFeatures" ) )
{
hasFeatureLimit = true;
maxFeatures = docElem.attribute( "maxFeatures" ).toLong();
}
if ( docElem.hasAttribute( "startIndex" ) )
{
startIndex = docElem.attribute( "startIndex" ).toLong();
}
QDomNodeList queryNodes = docElem.elementsByTagName( "Query" );
QDomElement queryElem;
for ( int i = 0; i < queryNodes.size(); i++ )
{
queryElem = queryNodes.at( 0 ).toElement();
mTypeName = queryElem.attribute( "typeName", "" );
if ( mTypeName.contains( ":" ) )
{
mTypeName = mTypeName.section( ":", 1, 1 );
}
mTypeNames << mTypeName;
}
for ( int i = 0; i < queryNodes.size(); i++ )
{
queryElem = queryNodes.at( 0 ).toElement();
mTypeName = queryElem.attribute( "typeName", "" );
if ( mTypeName.contains( ":" ) )
{
mTypeName = mTypeName.section( ":", 1, 1 );
}
layerList = mConfigParser->mapLayerFromTypeName( mTypeName );
if ( layerList.size() < 1 )
{
mErrors << QString( "The layer for the TypeName '%1' is not found" ).arg( mTypeName );
continue;
}
currentLayer = layerList.at( 0 );
QgsVectorLayer* layer = qobject_cast<QgsVectorLayer*>( currentLayer );
if ( layer && wfsLayersId.contains( layer->id() ) )
{
#ifdef HAVE_SERVER_PYTHON_PLUGINS
if ( !mAccessControl->layerReadPermission( currentLayer ) )
{
throw QgsMapServiceException( "Security", "Feature access permission denied" );
}
applyAccessControlLayerFilters( currentLayer, filterRestorer->originalFilters() );
#endif
expressionContext << QgsExpressionContextUtils::layerScope( layer );
//is there alias info for this vector layer?
QMap< int, QString > layerAliasInfo;
QgsStringMap aliasMap = layer->attributeAliases();
QgsStringMap::const_iterator aliasIt = aliasMap.constBegin();
for ( ; aliasIt != aliasMap.constEnd(); ++aliasIt )
{
int attrIndex = layer->fieldNameIndex( aliasIt.key() );
if ( attrIndex != -1 )
{
layerAliasInfo.insert( attrIndex, aliasIt.value() );
}
}
//excluded attributes for this layer
const QSet<QString>& layerExcludedAttributes = layer->excludeAttributesWFS();
//get layer precision
layerPrec = mConfigParser->wfsLayerPrecision( layer->id() );
//do a select with searchRect and go through all the features
QgsVectorDataProvider* provider = layer->dataProvider();
if ( !provider )
{
mErrors << QString( "The layer's provider for the TypeName '%1' is not found" ).arg( mTypeName );
continue;
}
QgsFeature feature;
mWithGeom = true;
//Using pending attributes and pending fields
QgsAttributeList attrIndexes = layer->pendingAllAttributesList();
QDomNodeList queryChildNodes = queryElem.childNodes();
if ( queryChildNodes.size() )
{
QStringList::const_iterator alstIt;
QList<int> idxList;
QgsFields fields = layer->pendingFields();
QString fieldName;
QDomElement propertyElem;
for ( int q = 0; q < queryChildNodes.size(); q++ )
{
QDomElement queryChildElem = queryChildNodes.at( q ).toElement();
if ( queryChildElem.tagName() == "PropertyName" )
{
fieldName = queryChildElem.text();
if ( fieldName.contains( ":" ) )
{
fieldName = fieldName.section( ":", 1, 1 );
}
int fieldNameIdx = fields.fieldNameIndex( fieldName );
if ( fieldNameIdx > -1 )
{
idxList.append( fieldNameIdx );
}
}
}
if ( !idxList.isEmpty() )
{
attrIndexes = idxList;
}
}
//map extent
searchRect = layer->extent();
searchRect.set( searchRect.xMinimum() - 1. / pow( 10., layerPrec )
, searchRect.yMinimum() - 1. / pow( 10., layerPrec )
, searchRect.xMaximum() + 1. / pow( 10., layerPrec )
, searchRect.yMaximum() + 1. / pow( 10., layerPrec ) );
layerCrs = layer->crs();
QgsFeatureRequest fReq;
#ifdef HAVE_SERVER_PYTHON_PLUGINS
fReq.setFlags( QgsFeatureRequest::ExactIntersect | ( mWithGeom ? QgsFeatureRequest::NoFlags : QgsFeatureRequest::NoGeometry ) );
mAccessControl->filterFeatures( layer, fReq );
QStringList attributes = QStringList();
Q_FOREACH ( int idx, attrIndexes )
{
attributes.append( layer->pendingFields().field( idx ).name() );
}
fReq.setSubsetOfAttributes(
mAccessControl->layerAttributes( layer, attributes ),
layer->pendingFields() );
#endif
QgsFeatureIterator fit = layer->getFeatures( fReq );
QDomNodeList filterNodes = queryElem.elementsByTagName( "Filter" );
if ( !filterNodes.isEmpty() )
{
QDomElement filterElem = filterNodes.at( 0 ).toElement();
QDomNodeList fidNodes = filterElem.elementsByTagName( "FeatureId" );
if ( !fidNodes.isEmpty() )
{
QDomElement fidElem;
QString fid = "";
for ( int f = 0; f < fidNodes.size(); f++ )
{
fidElem = fidNodes.at( f ).toElement();
fid = fidElem.attribute( "fid" );
if ( fid.contains( "." ) )
{
if ( fid.section( ".", 0, 0 ) != mTypeName )
continue;
fid = fid.section( ".", 1, 1 );
}
//Need to be test for propertyname
layer->getFeatures( QgsFeatureRequest()
.setFilterFid( fid.toInt() )
.setFlags( QgsFeatureRequest::ExactIntersect | ( mWithGeom ? QgsFeatureRequest::NoFlags : QgsFeatureRequest::NoGeometry ) )
.setSubsetOfAttributes( attrIndexes )
).nextFeature( feature );
if ( featureCounter == 0 )
startGetFeature( request, format, layerPrec, layerCrs, &searchRect );
setGetFeature( request, format, &feature, featCounter, layerPrec, layerCrs, attrIndexes, layerExcludedAttributes );
fid = "";
++featCounter;
++featureCounter;
}
}
else if ( filterElem.firstChildElement().tagName() == "BBOX" )
{
QDomElement bboxElem = filterElem.firstChildElement();
QDomElement childElem = bboxElem.firstChildElement();
QgsFeatureRequest req;
req.setFlags( QgsFeatureRequest::ExactIntersect | ( mWithGeom ? QgsFeatureRequest::NoFlags : QgsFeatureRequest::NoGeometry ) );
while ( !childElem.isNull() )
{
if ( childElem.tagName() == "Box" )
{
req.setFilterRect( QgsOgcUtils::rectangleFromGMLBox( childElem ) );
}
else if ( childElem.tagName() != "PropertyName" )
{
QgsGeometry *geom = QgsOgcUtils::geometryFromGML( childElem );
req.setFilterRect( geom->boundingBox() );
delete geom;
}
childElem = childElem.nextSiblingElement();
}
req.setSubsetOfAttributes( attrIndexes );
QgsFeatureIterator fit = layer->getFeatures( req );
while ( fit.nextFeature( feature ) && ( !hasFeatureLimit || featureCounter < maxFeatures + startIndex ) )
{
if ( featureCounter == startIndex )
startGetFeature( request, format, layerPrec, layerCrs, &searchRect );
if ( featureCounter >= startIndex )
{
setGetFeature( request, format, &feature, featCounter, layerPrec, layerCrs, attrIndexes, layerExcludedAttributes );
++featCounter;
}
++featureCounter;
}
}
else
{
QSharedPointer<QgsExpression> filter( QgsOgcUtils::expressionFromOgcFilter( filterElem ) );
if ( filter )
{
if ( filter->hasParserError() )
{
throw QgsMapServiceException( "RequestNotWellFormed", filter->parserErrorString() );
}
QgsFeatureRequest req;
if ( filter->needsGeometry() )
{
req.setFlags( QgsFeatureRequest::NoFlags );
}
else
{
req.setFlags( QgsFeatureRequest::ExactIntersect | ( mWithGeom ? QgsFeatureRequest::NoFlags : QgsFeatureRequest::NoGeometry ) );
}
req.setFilterExpression( filter->expression() );
#ifdef HAVE_SERVER_PYTHON_PLUGINS
mAccessControl->filterFeatures( layer, req );
QStringList attributes = QStringList();
Q_FOREACH ( int idx, attrIndexes )
{
attributes.append( layer->pendingFields().field( idx ).name() );
}
req.setSubsetOfAttributes(
mAccessControl->layerAttributes( layer, attributes ),
layer->pendingFields() );
#endif
QgsFeatureIterator fit = layer->getFeatures( req );
while ( fit.nextFeature( feature ) && ( !hasFeatureLimit || featureCounter < maxFeatures + startIndex ) )
{
expressionContext.setFeature( feature );
QVariant res = filter->evaluate( &expressionContext );
if ( filter->hasEvalError() )
{
throw QgsMapServiceException( "RequestNotWellFormed", filter->evalErrorString() );
}
if ( res.toInt() != 0 )
{
if ( featureCounter == startIndex )
startGetFeature( request, format, layerPrec, layerCrs, &searchRect );
if ( featureCounter >= startIndex )
{
setGetFeature( request, format, &feature, featCounter, layerPrec, layerCrs, attrIndexes, layerExcludedAttributes );
++featCounter;
}
++featureCounter;
}
}
}
}
}
else
{
while ( fit.nextFeature( feature ) && ( !hasFeatureLimit || featureCounter < maxFeatures + startIndex ) )
{
if ( featureCounter == startIndex )
startGetFeature( request, format, layerPrec, layerCrs, &searchRect );
if ( featureCounter >= startIndex )
{
setGetFeature( request, format, &feature, featCounter, layerPrec, layerCrs, attrIndexes, layerExcludedAttributes );
++featCounter;
}
++featureCounter;
}
}
}
else
{
mErrors << QString( "The layer for the TypeName '%1' is not a WFS layer" ).arg( mTypeName );
}
}
//force restoration of original layer filters
filterRestorer.reset();
QgsMessageLog::logMessage( mErrors.join( "\n" ) );
QgsMapLayerRegistry::instance()->removeAllMapLayers();
if ( featureCounter <= startIndex )
startGetFeature( request, format, layerPrec, layerCrs, &searchRect );
endGetFeature( request, format );
return 0;
}
// Information about parameters
// FILTER
bool filterOk = false;
QDomDocument filter;
// EXP_FILTER
bool expFilterOk = false;
QString expFilter;
// BBOX
bool bboxOk = false;
double minx = 0.0, miny = 0.0, maxx = 0.0, maxy = 0.0;
//read FEATUREDID
bool featureIdOk = false;
QStringList featureIdList;
QMap<QString, QString>::const_iterator feature_id_it = mParameters.constFind( "FEATUREID" );
if ( feature_id_it != mParameters.constEnd() )
{
featureIdOk = true;
featureIdList = feature_id_it.value().split( "," );
QStringList typeNameList;
Q_FOREACH ( const QString &fidStr, featureIdList )
{
// testing typename in the WFS featureID
if ( !fidStr.contains( "." ) )
throw QgsMapServiceException( "RequestNotWellFormed", "FEATUREID has to have TYPENAME in the values" );
QString typeName = fidStr.section( ".", 0, 0 );
if ( !typeNameList.contains( typeName ) )
typeNameList << typeName;
}
mTypeName = typeNameList.join( "," );
}
if ( !featureIdOk )
{
//read TYPENAME
QMap<QString, QString>::const_iterator type_name_it = mParameters.constFind( "TYPENAME" );
if ( type_name_it != mParameters.constEnd() )
{
mTypeName = type_name_it.value();
}
else
{
throw QgsMapServiceException( "RequestNotWellFormed", "TYPENAME is MANDATORY" );
}
//read FILTER
QMap<QString, QString>::const_iterator filterIt = mParameters.constFind( "FILTER" );
if ( filterIt != mParameters.constEnd() )
{
QString errorMsg;
if ( !filter.setContent( filterIt.value(), true, &errorMsg ) )
{
throw QgsMapServiceException( "RequestNotWellFormed", QString( "error message: %1. The XML string was: %2" ).arg( errorMsg, filterIt.value() ) );
}
else
{
filterOk = true;
}
}
//read EXP_FILTER
if ( !filterOk )
{
QMap<QString, QString>::const_iterator expFilterIt = mParameters.constFind( "EXP_FILTER" );
if ( expFilterIt != mParameters.constEnd() )
{
expFilterOk = true;
expFilter = expFilterIt.value();
}
}
//read BBOX
if ( !filterOk )
{
QMap<QString, QString>::const_iterator bbIt = mParameters.constFind( "BBOX" );
if ( bbIt == mParameters.constEnd() )
{
minx = 0;
miny = 0;
maxx = 0;
maxy = 0;
}
else
{
bool conversionSuccess;
bboxOk = true;
QString bbString = bbIt.value();
minx = bbString.section( ",", 0, 0 ).toDouble( &conversionSuccess );
bboxOk &= conversionSuccess;
miny = bbString.section( ",", 1, 1 ).toDouble( &conversionSuccess );
bboxOk &= conversionSuccess;
maxx = bbString.section( ",", 2, 2 ).toDouble( &conversionSuccess );
bboxOk &= conversionSuccess;
maxy = bbString.section( ",", 3, 3 ).toDouble( &conversionSuccess );
bboxOk &= conversionSuccess;
}
}
}
//read MAXFEATURES
QMap<QString, QString>::const_iterator mfIt = mParameters.constFind( "MAXFEATURES" );
if ( mfIt != mParameters.constEnd() )
{
QString mfString = mfIt.value();
bool mfOk;
hasFeatureLimit = true;
maxFeatures = mfString.toLong( &mfOk, 10 );
}
//read STARTINDEX
QMap<QString, QString>::const_iterator siIt = mParameters.constFind( "STARTINDEX" );
if ( siIt != mParameters.constEnd() )
{
QString siString = siIt.value();
bool siOk;
startIndex = siString.toLong( &siOk, 10 );
}
//read PROPERTYNAME
mWithGeom = true;
mPropertyName = "*";
QMap<QString, QString>::const_iterator pnIt = mParameters.constFind( "PROPERTYNAME" );
if ( pnIt != mParameters.constEnd() )
{
mPropertyName = pnIt.value();
}
mGeometryName = "";
QMap<QString, QString>::const_iterator gnIt = mParameters.constFind( "GEOMETRYNAME" );
if ( gnIt != mParameters.constEnd() )
{
mGeometryName = gnIt.value().toUpper();
}
mTypeNames = mTypeName.split( "," );
Q_FOREACH ( const QString &tnStr, mTypeNames )
{
mTypeName = tnStr;
layerList = mConfigParser->mapLayerFromTypeName( tnStr );
if ( layerList.size() < 1 )
{
mErrors << QString( "The layer for the TypeName '%1' is not found" ).arg( tnStr );
continue;
}
currentLayer = layerList.at( 0 );
QgsVectorLayer* layer = qobject_cast<QgsVectorLayer*>( currentLayer );
if ( layer && wfsLayersId.contains( layer->id() ) )
{
expressionContext << QgsExpressionContextUtils::layerScope( layer );
//is there alias info for this vector layer?
QMap< int, QString > layerAliasInfo;
QgsStringMap aliasMap = layer->attributeAliases();
QgsStringMap::const_iterator aliasIt = aliasMap.constBegin();
for ( ; aliasIt != aliasMap.constEnd(); ++aliasIt )
{
int attrIndex = layer->fieldNameIndex( aliasIt.key() );
if ( attrIndex != -1 )
{
layerAliasInfo.insert( attrIndex, aliasIt.value() );
}
}
//excluded attributes for this layer
const QSet<QString>& layerExcludedAttributes = layer->excludeAttributesWFS();
//get layer precision
int layerPrec = mConfigParser->wfsLayerPrecision( layer->id() );
//do a select with searchRect and go through all the features
QgsVectorDataProvider* provider = layer->dataProvider();
if ( !provider )
{
mErrors << QString( "The layer's provider for the TypeName '%1' is not found" ).arg( tnStr );
continue;
}
QgsFeature feature;
//map extent
searchRect = layer->extent();
//Using pending attributes and pending fields
QgsAttributeList attrIndexes = layer->pendingAllAttributesList();
if ( mPropertyName != "*" )
{
QStringList attrList = mPropertyName.split( "," );
if ( !attrList.isEmpty() )
{
QStringList::const_iterator alstIt;
QList<int> idxList;
QgsFields fields = layer->pendingFields();
QString fieldName;
for ( alstIt = attrList.begin(); alstIt != attrList.end(); ++alstIt )
{
fieldName = *alstIt;
int fieldNameIdx = fields.fieldNameIndex( fieldName );
if ( fieldNameIdx > -1 )
{
idxList.append( fieldNameIdx );
}
}
if ( !idxList.isEmpty() )
{
attrIndexes = idxList;
}
}
}
if ( bboxOk )
searchRect.set( minx, miny, maxx, maxy );
else
searchRect.set( searchRect.xMinimum() - 1. / pow( 10., layerPrec ),
searchRect.yMinimum() - 1. / pow( 10., layerPrec ),
searchRect.xMaximum() + 1. / pow( 10., layerPrec ),
searchRect.yMaximum() + 1. / pow( 10., layerPrec ) );
layerCrs = layer->crs();
if ( featureIdOk )
{
Q_FOREACH ( const QString &fidStr, featureIdList )
{
if ( !fidStr.startsWith( tnStr ) )
continue;
//Need to be test for propertyname
layer->getFeatures( QgsFeatureRequest()
.setFilterFid( fidStr.section( ".", 1, 1 ).toInt() )
.setFlags( mWithGeom ? QgsFeatureRequest::NoFlags : QgsFeatureRequest::NoGeometry )
.setSubsetOfAttributes( attrIndexes )
).nextFeature( feature );
if ( featureCounter == 0 )
startGetFeature( request, format, layerPrec, layerCrs, &searchRect );
setGetFeature( request, format, &feature, featCounter, layerPrec, layerCrs, attrIndexes, layerExcludedAttributes );
++featCounter;
++featureCounter;
}
}
else if ( expFilterOk )
{
QgsFeatureRequest req;
if ( layer->wkbType() != QGis::WKBNoGeometry )
{
if ( bboxOk )
{
req.setFilterRect( searchRect );
req.setFlags( QgsFeatureRequest::ExactIntersect | ( mWithGeom ? QgsFeatureRequest::NoFlags : QgsFeatureRequest::NoGeometry ) );
}
else
{
req.setFlags( mWithGeom ? QgsFeatureRequest::NoFlags : QgsFeatureRequest::NoGeometry );
}
}
else