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qgswfsserver.cpp
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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 "qgsconfigparser.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 "qgspallabeling.h"
#include "qgsproject.h"
#include "qgsrasterlayer.h"
#include "qgsscalecalculator.h"
#include "qgscoordinatereferencesystem.h"
#include "qgsvectordataprovider.h"
#include "qgsvectorlayer.h"
#include "qgsfilter.h"
#include "qgslogger.h"
#include "qgsmapserviceexception.h"
#include "qgssldparser.h"
#include "qgssymbolv2.h"
#include "qgslegendmodel.h"
#include "qgscomposerlegenditem.h"
#include "qgsrequesthandler.h"
#include "qgsogcutils.h"
#include <QImage>
#include <QPainter>
#include <QStringList>
#include <QTextStream>
#include <QDir>
//for printing
#include "qgscomposition.h"
#include <QBuffer>
#include <QPrinter>
#include <QSvgGenerator>
#include <QUrl>
#include <QPaintEngine>
#ifndef Q_WS_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( QMap<QString, QString> parameters )
: mParameterMap( parameters )
, mConfigParser( 0 )
{
}
QgsWFSServer::~QgsWFSServer()
{
}
QgsWFSServer::QgsWFSServer()
{
}
QDomDocument QgsWFSServer::getCapabilities()
{
QgsDebugMsg( "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 = 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()
{
QgsDebugMsg( "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( mParameterMap.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 = mParameterMap.find( "TYPENAME" );
if ( type_name_it != mParameterMap.end() )
{
typeName = type_name_it.value();
}
mConfigParser->describeFeatureType( typeName, schemaElement, doc );
}
return doc;
}
int QgsWFSServer::getFeature( QgsRequestHandler& request, const QString& format )
{
QgsDebugMsg( "Info format is:" + format );
QStringList wfsLayersId = mConfigParser->wfsLayers();
QList<QgsMapLayer*> layerList;
QgsMapLayer* currentLayer = 0;
QgsCoordinateReferenceSystem layerCrs;
QgsRectangle searchRect( 0, 0, 0, 0 );
mErrors = QStringList();
mTypeNames = QStringList();
long maxFeat = 0;
long maxFeatures = -1;
long featureCounter = 0;
QDomDocument doc;
QString errorMsg;
if ( doc.setContent( mParameterMap.value( "REQUEST_BODY" ), true, &errorMsg ) )
{
QDomElement docElem = doc.documentElement();
if ( docElem.hasAttribute( "maxFeatures" ) )
maxFeatures = docElem.attribute( "maxFeatures" ).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 = dynamic_cast<QgsVectorLayer*>( currentLayer );
if ( layer && wfsLayersId.contains( layer->id() ) )
{
if ( layer->vectorJoins().size() > 0 )
{
QList<QgsMapLayer *> joinLayers;
//insert existing join info
const QList< QgsVectorJoinInfo >& joins = layer->vectorJoins();
for ( int i = 0; i < joins.size(); ++i )
{
QgsMapLayer* joinLayer = mConfigParser->mapLayerFromLayerId( joins[i].joinLayerId );
if ( joinLayer )
{
joinLayers << joinLayer;
}
QgsMapLayerRegistry::instance()->addMapLayers( joinLayers, false, true );
}
layer->updateFields();
}
//is there alias info for this vector layer?
QMap< int, QString > layerAliasInfo;
const QMap< QString, QString >& aliasMap = layer->attributeAliases();
QMap< QString, QString >::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();
//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;
QgsAttributeMap featureAttributes;
const QgsFields& fields = provider->fields();
mWithGeom = true;
QgsAttributeList attrIndexes = provider->attributeIndexes();
QDomNodeList queryChildNodes = queryElem.childNodes();
if ( queryChildNodes.size() )
{
QStringList::const_iterator alstIt;
QList<int> idxList;
QMap<QString, int> fieldMap = provider->fieldNameMap();
QMap<QString, int>::const_iterator fieldIt;
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 );
}
fieldIt = fieldMap.find( fieldName );
if ( fieldIt != fieldMap.end() )
{
idxList.append( fieldIt.value() );
}
}
}
if ( idxList.size() > 0 )
{
attrIndexes = idxList;
}
}
//map extent
searchRect = layer->extent();
searchRect.set( searchRect.xMinimum() - 0.000001
, searchRect.yMinimum() - 0.000001
, searchRect.xMaximum() + 0.000001
, searchRect.yMaximum() + 0.000001 );
layerCrs = layer->crs();
if ( maxFeatures == -1 )
maxFeat += layer->featureCount();
QgsFeatureIterator fit = layer->getFeatures(
QgsFeatureRequest()
.setFlags( QgsFeatureRequest::ExactIntersect | ( mWithGeom ? QgsFeatureRequest::NoFlags : QgsFeatureRequest::NoGeometry ) )
.setSubsetOfAttributes( attrIndexes ) );
long featCounter = 0;
QDomNodeList filterNodes = queryElem.elementsByTagName( "Filter" );
if ( filterNodes.size() > 0 )
{
QDomElement filterElem = filterNodes.at( 0 ).toElement();
QDomNodeList fidNodes = filterElem.elementsByTagName( "FeatureId" );
if ( fidNodes.size() > 0 )
{
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, layerCrs, &searchRect );
sendGetFeature( request, format, &feature, featCounter, 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 ) && featureCounter < maxFeat )
{
if ( featureCounter == 0 )
startGetFeature( request, format, layerCrs, &searchRect );
sendGetFeature( request, format, &feature, featCounter, layerCrs, attrIndexes, layerExcludedAttributes );
++featCounter;
++featureCounter;
}
}
else
{
QgsExpression *mFilter = QgsOgcUtils::expressionFromOgcFilter( filterElem );
if ( mFilter )
{
if ( mFilter->hasParserError() )
{
throw QgsMapServiceException( "RequestNotWellFormed", mFilter->parserErrorString() );
}
while ( fit.nextFeature( feature ) && featureCounter < maxFeat )
{
QVariant res = mFilter->evaluate( &feature, fields );
if ( mFilter->hasEvalError() )
{
throw QgsMapServiceException( "RequestNotWellFormed", mFilter->evalErrorString() );
}
if ( res.toInt() != 0 )
{
if ( featureCounter == 0 )
startGetFeature( request, format, layerCrs, &searchRect );
sendGetFeature( request, format, &feature, featureCounter, layerCrs, attrIndexes, layerExcludedAttributes );
++featureCounter;
++featCounter;
}
}
}
}
}
else
{
while ( fit.nextFeature( feature ) && featureCounter < maxFeat )
{
if ( featureCounter == 0 )
startGetFeature( request, format, layerCrs, &searchRect );
sendGetFeature( request, format, &feature, featCounter, layerCrs, attrIndexes, layerExcludedAttributes );
++featCounter;
++featureCounter;
}
}
}
else
{
mErrors << QString( "The layer for the TypeName '%1' is not a WFS layer" ).arg( mTypeName );
}
}
QgsMapLayerRegistry::instance()->removeAllMapLayers();
if ( featureCounter == 0 )
throw QgsMapServiceException( "RequestNotWellFormed", mErrors.join( ". " ) );
else
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 = mParameterMap.find( "FEATUREID" );
if ( feature_id_it != mParameterMap.end() )
{
featureIdOk = true;
featureIdList = feature_id_it.value().split( "," );
QStringList typeNameList;
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 = mParameterMap.find( "TYPENAME" );
if ( type_name_it != mParameterMap.end() )
{
mTypeName = type_name_it.value();
}
else
{
throw QgsMapServiceException( "RequestNotWellFormed", "TYPENAME is MANDATORY" );
}
//read FILTER
QMap<QString, QString>::const_iterator filterIt = mParameterMap.find( "FILTER" );
if ( filterIt != mParameterMap.end() )
{
QString errorMsg;
if ( !filter.setContent( filterIt.value(), true, &errorMsg ) )
{
throw QgsMapServiceException( "RequestNotWellFormed", QString( "error message: %1. The XML string was: %2" ).arg( errorMsg ).arg( filterIt.value() ) );
}
else
{
filterOk = true;
}
}
//read EXP_FILTER
if ( !filterOk )
{
QMap<QString, QString>::const_iterator expFilterIt = mParameterMap.find( "EXP_FILTER" );
if ( expFilterIt != mParameterMap.end() )
{
expFilterOk = true;
expFilter = expFilterIt.value();
}
}
//read BBOX
if ( !filterOk )
{
QMap<QString, QString>::const_iterator bbIt = mParameterMap.find( "BBOX" );
if ( bbIt == mParameterMap.end() )
{
minx = 0; miny = 0; maxx = 0; maxy = 0;
}
else
{
bool conversionSuccess;
bboxOk = true;
QString bbString = bbIt.value();
minx = bbString.section( ",", 0, 0 ).toDouble( &conversionSuccess );
if ( !conversionSuccess ) {bboxOk = false;}
miny = bbString.section( ",", 1, 1 ).toDouble( &conversionSuccess );
if ( !conversionSuccess ) {bboxOk = false;}
maxx = bbString.section( ",", 2, 2 ).toDouble( &conversionSuccess );
if ( !conversionSuccess ) {bboxOk = false;}
maxy = bbString.section( ",", 3, 3 ).toDouble( &conversionSuccess );
if ( !conversionSuccess ) {bboxOk = false;}
}
}
}
//read MAXFEATURES
QMap<QString, QString>::const_iterator mfIt = mParameterMap.find( "MAXFEATURES" );
if ( mfIt != mParameterMap.end() )
{
QString mfString = mfIt.value();
bool mfOk;
maxFeatures = mfString.toLong( &mfOk, 10 );
maxFeat = mfString.toLong( &mfOk, 10 );
}
//read PROPERTYNAME
mWithGeom = true;
mPropertyName = "*";
QMap<QString, QString>::const_iterator pnIt = mParameterMap.find( "PROPERTYNAME" );
if ( pnIt != mParameterMap.end() )
{
mPropertyName = pnIt.value();
}
mTypeNames = mTypeName.split( "," );
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 = dynamic_cast<QgsVectorLayer*>( currentLayer );
if ( layer && wfsLayersId.contains( layer->id() ) )
{
if ( layer->vectorJoins().size() > 0 )
{
QList<QgsMapLayer *> joinLayers;
//insert existing join info
const QList< QgsVectorJoinInfo >& joins = layer->vectorJoins();
for ( int i = 0; i < joins.size(); ++i )
{
QgsMapLayer* joinLayer = mConfigParser->mapLayerFromLayerId( joins[i].joinLayerId );
if ( joinLayer )
{
joinLayers << joinLayer;
}
QgsMapLayerRegistry::instance()->addMapLayers( joinLayers, false, true );
}
layer->updateFields();
}
//is there alias info for this vector layer?
QMap< int, QString > layerAliasInfo;
const QMap< QString, QString >& aliasMap = layer->attributeAliases();
QMap< QString, QString >::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();
//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;
QgsAttributeMap featureAttributes;
const QgsFields& fields = provider->fields();
//map extent
searchRect = layer->extent();
QgsAttributeList attrIndexes = provider->attributeIndexes();
if ( mPropertyName != "*" )
{
QStringList attrList = mPropertyName.split( "," );
if ( attrList.size() > 0 )
{
QStringList::const_iterator alstIt;
QList<int> idxList;
QMap<QString, int> fieldMap = provider->fieldNameMap();
QMap<QString, int>::const_iterator fieldIt;
QString fieldName;
for ( alstIt = attrList.begin(); alstIt != attrList.end(); ++alstIt )
{
fieldName = *alstIt;
fieldIt = fieldMap.find( fieldName );
if ( fieldIt != fieldMap.end() )
{
idxList.append( fieldIt.value() );
}
}
if ( idxList.size() > 0 )
{
attrIndexes = idxList;
}
}
}
if ( maxFeatures == -1 )
maxFeat += layer->featureCount();
if ( bboxOk )
searchRect.set( minx, miny, maxx, maxy );
else
searchRect.set( searchRect.xMinimum() - 0.000001,
searchRect.yMinimum() - 0.000001,
searchRect.xMaximum() + 0.000001,
searchRect.yMaximum() + 0.000001 );
layerCrs = layer->crs();
long featCounter = 0;
if ( featureIdOk )
{
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, layerCrs, &searchRect );
sendGetFeature( request, format, &feature, featCounter, 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
{
req.setFlags( QgsFeatureRequest::NoGeometry );
mWithGeom = false;
}
req.setSubsetOfAttributes( attrIndexes );
QgsFeatureIterator fit = layer->getFeatures( req );
QgsExpression *mFilter = new QgsExpression( expFilter );
if ( mFilter )
{
if ( mFilter->hasParserError() )
{
throw QgsMapServiceException( "RequestNotWellFormed", QString( "Expression filter error message: %1." ).arg( mFilter->parserErrorString() ) );
}
while ( fit.nextFeature( feature ) && featureCounter < maxFeat )
{
QVariant res = mFilter->evaluate( &feature, fields );
if ( mFilter->hasEvalError() )
{
throw QgsMapServiceException( "RequestNotWellFormed", QString( "Expression filter eval error message: %1." ).arg( mFilter->evalErrorString() ) );
}
if ( res.toInt() != 0 )
{
if ( featureCounter == 0 )
startGetFeature( request, format, layerCrs, &searchRect );
sendGetFeature( request, format, &feature, featCounter, layerCrs, attrIndexes, layerExcludedAttributes );
++featCounter;
++featureCounter;
}
}
delete mFilter;
}
}
else if ( filterOk )
{
QDomElement filterElem = filter.firstChildElement();
QDomNodeList fidNodes = filterElem.elementsByTagName( "FeatureId" );
if ( fidNodes.size() > 0 )
{
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( mWithGeom ? QgsFeatureRequest::NoFlags : QgsFeatureRequest::NoGeometry )
.setSubsetOfAttributes( attrIndexes )
).nextFeature( feature );
if ( featureCounter == 0 )
startGetFeature( request, format, layerCrs, &searchRect );
sendGetFeature( request, format, &feature, featCounter, 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 ) && featureCounter < maxFeat )
{
if ( featureCounter == 0 )
startGetFeature( request, format, layerCrs, &searchRect );
sendGetFeature( request, format, &feature, featCounter, layerCrs, attrIndexes, layerExcludedAttributes );
++featCounter;
++featureCounter;
}
}
else
{
QgsExpression *mFilter = QgsOgcUtils::expressionFromOgcFilter( filterElem );
if ( mFilter )
{
if ( mFilter->hasParserError() )
{
throw QgsMapServiceException( "RequestNotWellFormed", QString( "OGC expression filter error message: %1." ).arg( mFilter->parserErrorString() ) );
}
QgsFeatureRequest req;
if ( layer->wkbType() != QGis::WKBNoGeometry )
{
if ( bboxOk )
{
req.setFilterRect( searchRect ).setFlags( QgsFeatureRequest::ExactIntersect | ( mWithGeom ? QgsFeatureRequest::NoFlags : QgsFeatureRequest::NoGeometry ) );
}
else
{
req.setFlags( mWithGeom ? QgsFeatureRequest::NoFlags : QgsFeatureRequest::NoGeometry );
}
}
else
{
req.setFlags( QgsFeatureRequest::NoGeometry );
mWithGeom = false;
}
req.setSubsetOfAttributes( attrIndexes );
QgsFeatureIterator fit = layer->getFeatures( req );
while ( fit.nextFeature( feature ) && featureCounter < maxFeat )
{
QVariant res = mFilter->evaluate( &feature, fields );
if ( mFilter->hasEvalError() )
{
throw QgsMapServiceException( "RequestNotWellFormed", QString( "OGC expression filter eval error message: %1." ).arg( mFilter->evalErrorString() ) );
}
if ( res.toInt() != 0 )
{
if ( featureCounter == 0 )
startGetFeature( request, format, layerCrs, &searchRect );
sendGetFeature( request, format, &feature, featureCounter, layerCrs, attrIndexes, layerExcludedAttributes );
++featureCounter;
++featCounter;
}
}
}
delete mFilter;
}
}
else
{
//throw QgsMapServiceException( "RequestNotWellFormed", QString( "attrIndexes length: %1." ).arg( attrIndexes.count() ) );
QgsFeatureRequest req;
if ( layer->wkbType() != QGis::WKBNoGeometry )
{
if ( bboxOk )
{
req.setFilterRect( searchRect ).setFlags( QgsFeatureRequest::ExactIntersect | ( mWithGeom ? QgsFeatureRequest::NoFlags : QgsFeatureRequest::NoGeometry ) );
}
else
{
req.setFlags( mWithGeom ? QgsFeatureRequest::NoFlags : QgsFeatureRequest::NoGeometry );
}
}
else
{
req.setFlags( QgsFeatureRequest::NoGeometry );
mWithGeom = false;
}
req.setSubsetOfAttributes( attrIndexes );
QgsFeatureIterator fit = layer->getFeatures( req );
while ( fit.nextFeature( feature ) && featureCounter < maxFeat )
{