QgsMapLayer* QgsServerProjectParser::createLayerFromElement( const QDomElement& elem, bool useCache ) const
{
if ( elem.isNull() || !mXMLDoc )
{
return nullptr;
}
addJoinLayersForElement( elem );
addGetFeatureLayers( elem );
QDomElement dataSourceElem = elem.firstChildElement( "datasource" );
QString uri = dataSourceElem.text();
QString absoluteUri;
// If QgsProject instance fileName is set,
// Is converting relative pathes to absolute still relevant ?
if ( !dataSourceElem.isNull() )
{
//convert relative pathes to absolute ones if necessary
if ( uri.startsWith( "dbname" ) ) //database
{
QgsDataSourceUri dsUri( uri );
if ( dsUri.host().isEmpty() ) //only convert path for file based databases
{
QString dbnameUri = dsUri.database();
QString dbNameUriAbsolute = convertToAbsolutePath( dbnameUri );
if ( dbnameUri != dbNameUriAbsolute )
{
dsUri.setDatabase( dbNameUriAbsolute );
absoluteUri = dsUri.uri();
QDomText absoluteTextNode = mXMLDoc->createTextNode( absoluteUri );
dataSourceElem.replaceChild( absoluteTextNode, dataSourceElem.firstChild() );
}
}
}
else if ( uri.startsWith( "file:" ) ) //a file based datasource in url notation (e.g. delimited text layer)
{
QString filePath = uri.mid( 5, uri.indexOf( "?" ) - 5 );
QString absoluteFilePath = convertToAbsolutePath( filePath );
if ( filePath != absoluteFilePath )
{
QUrl destUrl = QUrl::fromEncoded( uri.toAscii() );
destUrl.setScheme( "file" );
destUrl.setPath( absoluteFilePath );
absoluteUri = destUrl.toEncoded();
QDomText absoluteTextNode = mXMLDoc->createTextNode( absoluteUri );
dataSourceElem.replaceChild( absoluteTextNode, dataSourceElem.firstChild() );
}
else
{
absoluteUri = uri;
}
}
else //file based data source
{
absoluteUri = convertToAbsolutePath( uri );
if ( uri != absoluteUri )
{
QDomText absoluteTextNode = mXMLDoc->createTextNode( absoluteUri );
dataSourceElem.replaceChild( absoluteTextNode, dataSourceElem.firstChild() );
}
}
}
QString id = layerId( elem );
QgsMapLayer* layer = nullptr;
if ( useCache )
{
layer = QgsMSLayerCache::instance()->searchLayer( absoluteUri, id, mProjectPath );
}
if ( layer )
{
if ( !QgsMapLayerRegistry::instance()->mapLayer( id ) )
QgsMapLayerRegistry::instance()->addMapLayer( layer, false, false );
if ( layer->type() == QgsMapLayer::VectorLayer )
addValueRelationLayersForLayer( dynamic_cast<QgsVectorLayer *>( layer ) );
return layer;
}
QString type = elem.attribute( "type" );
if ( type == "vector" )
{
layer = new QgsVectorLayer();
}
else if ( type == "raster" )
{
layer = new QgsRasterLayer();
}
else if ( elem.attribute( "embedded" ) == "1" ) //layer is embedded from another project file
{
QString project = convertToAbsolutePath( elem.attribute( "project" ) );
QgsDebugMsg( QString( "Project path: %1" ).arg( project ) );
QgsServerProjectParser* otherConfig = QgsConfigCache::instance()->serverConfiguration( project );
if ( !otherConfig )
{
return nullptr;
}
return otherConfig->mapLayerFromLayerId( elem.attribute( "id" ), useCache );
}
if ( layer )
{
if ( layer->type() == QgsMapLayer::VectorLayer )
{
// see QgsEditorWidgetRegistry::mapLayerAdded()
QObject::connect( layer, SIGNAL( readCustomSymbology( const QDomElement&, QString& ) ), QgsEditorWidgetRegistry::instance(), SLOT( readSymbology( const QDomElement&, QString& ) ) );
}
layer->readLayerXml( const_cast<QDomElement&>( elem ) ); //should be changed to const in QgsMapLayer
//layer->setLayerName( layerName( elem ) );
// Insert layer in registry and cache before addValueRelationLayersForLayer
if ( !QgsMapLayerRegistry::instance()->mapLayer( id ) )
QgsMapLayerRegistry::instance()->addMapLayer( layer, false, false );
if ( useCache )
{
QgsMSLayerCache::instance()->insertLayer( absoluteUri, id, layer, mProjectPath );
}
else
{
//todo: fixme
//mLayersToRemove.push_back( layer );
}
if ( layer->type() == QgsMapLayer::VectorLayer )
{
addValueRelationLayersForLayer( dynamic_cast<QgsVectorLayer *>( layer ) );
}
}
return layer;
}
QgsMapLayer* QgsServerProjectParser::createLayerFromElement( const QDomElement& elem, bool useCache ) const
{
if ( elem.isNull() || !mXMLDoc )
{
return 0;
}
addJoinLayersForElement( elem, useCache );
addValueRelationLayersForElement( elem, useCache );
QDomElement dataSourceElem = elem.firstChildElement( "datasource" );
QString uri = dataSourceElem.text();
QString absoluteUri;
if ( !dataSourceElem.isNull() )
{
//convert relative pathes to absolute ones if necessary
if ( uri.startsWith( "dbname" ) ) //database
{
QgsDataSourceURI dsUri( uri );
if ( dsUri.host().isEmpty() ) //only convert path for file based databases
{
QString dbnameUri = dsUri.database();
QString dbNameUriAbsolute = convertToAbsolutePath( dbnameUri );
if ( dbnameUri != dbNameUriAbsolute )
{
dsUri.setDatabase( dbNameUriAbsolute );
absoluteUri = dsUri.uri();
QDomText absoluteTextNode = mXMLDoc->createTextNode( absoluteUri );
dataSourceElem.replaceChild( absoluteTextNode, dataSourceElem.firstChild() );
}
}
}
else if ( uri.startsWith( "file:" ) ) //a file based datasource in url notation (e.g. delimited text layer)
{
QString filePath = uri.mid( 5, uri.indexOf( "?" ) - 5 );
QString absoluteFilePath = convertToAbsolutePath( filePath );
if ( filePath != absoluteFilePath )
{
QUrl destUrl = QUrl::fromEncoded( uri.toAscii() );
destUrl.setScheme( "file" );
destUrl.setPath( absoluteFilePath );
absoluteUri = destUrl.toEncoded();
QDomText absoluteTextNode = mXMLDoc->createTextNode( absoluteUri );
dataSourceElem.replaceChild( absoluteTextNode, dataSourceElem.firstChild() );
}
else
{
absoluteUri = uri;
}
}
else //file based data source
{
absoluteUri = convertToAbsolutePath( uri );
if ( uri != absoluteUri )
{
QDomText absoluteTextNode = mXMLDoc->createTextNode( absoluteUri );
dataSourceElem.replaceChild( absoluteTextNode, dataSourceElem.firstChild() );
}
}
}
QString id = layerId( elem );
QgsMapLayer* layer = 0;
if ( useCache )
{
layer = QgsMSLayerCache::instance()->searchLayer( absoluteUri, id );
}
if ( layer )
{
return layer;
}
QString type = elem.attribute( "type" );
if ( type == "vector" )
{
layer = new QgsVectorLayer();
}
else if ( type == "raster" )
{
layer = new QgsRasterLayer();
}
else if ( elem.attribute( "embedded" ) == "1" ) //layer is embedded from another project file
{
QString project = convertToAbsolutePath( elem.attribute( "project" ) );
QgsDebugMsg( QString( "Project path: %1" ).arg( project ) );
QgsServerProjectParser* otherConfig = QgsConfigCache::instance()->serverConfiguration( project );
if ( !otherConfig )
{
return 0;
}
return otherConfig->mapLayerFromLayerId( elem.attribute( "id" ), useCache );
}
if ( layer )
{
layer->readLayerXML( const_cast<QDomElement&>( elem ) ); //should be changed to const in QgsMapLayer
layer->setLayerName( layerName( elem ) );
if ( useCache )
{
QgsMSLayerCache::instance()->insertLayer( absoluteUri, id, layer, mProjectPath );
}
else
{
//todo: fixme
//mLayersToRemove.push_back( layer );
}
}
return layer;
}
