fix export from Graduated renderingV2 to SLD, generate valid SLD docs (…

…fix #5795):

Description tag must have a child tag,
OnlineResource tag and its child Format tag must have SE namespace,
Filter tag created and never appended to the Rule element exporting from a Graduated rendering,
fix convertion between PropertyIsBetween tag and QgsExpression

src/core/qgsexpression.cpp

@@ -689,31 +689,38 @@ QgsExpression::Node* QgsExpression::Node::createFromOgcFilter( QDomElement &elem
   else if ( element.localName() == "PropertyIsBetween" )
   {
     // <ogc:PropertyIsBetween> encode a Range check
-    QgsExpression::Node *operand = 0, *lowerBound = 0, *upperBound = 0;
+    QgsExpression::Node *operand = 0, *lowerBound = 0;
+    QgsExpression::Node *operand2 = 0, *upperBound = 0;
 
-    QDomElement operandElem = element.firstChildElement( "LowerBoundary" );
-    if ( !operandElem.isNull() )
-      lowerBound = createFromOgcFilter( operandElem, errorMessage );
-
-    operandElem = element.firstChildElement( "UpperBoundary" );
-    if ( !operandElem.isNull() )
-      upperBound = createFromOgcFilter( operandElem, errorMessage );
-
-    // <ogc:expression>
-    operandElem = element.firstChildElement();
-    while ( !operandElem.isNull() )
+    QDomElement operandElem = element.firstChildElement();
+    while( !operandElem.isNull() )
     {
-      if ( operandElem.localName() != "LowerBoundary" &&
-           operandElem.localName() != "UpperBoundary" )
+      if ( operandElem.localName() == "LowerBoundary" )
+      {
+        QDomElement lowerBoundElem = operandElem.firstChildElement();
+        lowerBound = createFromOgcFilter( lowerBoundElem, errorMessage );
+      }
+      else if ( operandElem.localName() ==  "UpperBoundary" )
       {
+        QDomElement upperBoundElem = operandElem.firstChildElement();
+        upperBound = createFromOgcFilter( upperBoundElem, errorMessage );
+      }
+      else
+      {
+        // <ogc:expression>
+        // both operand and operand2 contain the same expression,
+        // they are respectively compared to lower bound and upper bound
         operand = createFromOgcFilter( operandElem, errorMessage );
-        break;
+        operand2 = createFromOgcFilter( operandElem, errorMessage );
       }
 
+      if ( operand && lowerBound && operand2 && upperBound )
+        break;
+
       operandElem = operandElem.nextSiblingElement();
     }
 
-    if ( !operand || !lowerBound || !upperBound )
+    if ( !operand || !lowerBound || !operand2 || !upperBound )
     {
       if ( operand )
         delete operand;
@@ -729,7 +736,7 @@ QgsExpression::Node* QgsExpression::Node::createFromOgcFilter( QDomElement &elem
     }
 
     QgsExpression::Node *geOperator = new QgsExpression::NodeBinaryOperator( boGE, operand, lowerBound );
-    QgsExpression::Node *leOperator = new QgsExpression::NodeBinaryOperator( boLE, operand, upperBound );
+    QgsExpression::Node *leOperator = new QgsExpression::NodeBinaryOperator( boLE, operand2, upperBound );
     return new QgsExpression::NodeBinaryOperator( boAnd, geOperator, leOperator );
   }
 

src/core/symbology-ng/qgscategorizedsymbolrendererv2.cpp

@@ -97,8 +97,10 @@ void QgsRendererCategoryV2::toSld( QDomDocument &doc, QDomElement &element, QgsS
   ruleElem.appendChild( nameElem );
 
   QDomElement descrElem = doc.createElement( "se:Description" );
+  QDomElement abstractElem = doc.createElement( "se:Abstract" );
   QString descrStr = QString( "%1 is '%2'" ).arg( attrName ).arg( mValue.toString() );
-  descrElem.appendChild( doc.createTextNode( !mLabel.isEmpty() ? mLabel : descrStr ) );
+  abstractElem.appendChild( doc.createTextNode( !mLabel.isEmpty() ? mLabel : descrStr ) );
+  descrElem.appendChild( abstractElem );
   ruleElem.appendChild( descrElem );
 
   // create the ogc:Filter for the range

src/core/symbology-ng/qgsgraduatedsymbolrendererv2.cpp

@@ -114,8 +114,10 @@ void QgsRendererRangeV2::toSld( QDomDocument &doc, QDomElement &element, QgsStri
   ruleElem.appendChild( nameElem );
 
   QDomElement descrElem = doc.createElement( "se:Description" );
+  QDomElement abstractElem = doc.createElement( "se:Abstract" );
   QString descrStr = QString( "range: %1 - %2" ).arg( mLowerValue ).arg( mUpperValue );
-  descrElem.appendChild( doc.createTextNode( !mLabel.isEmpty() ? mLabel : descrStr ) );
+  abstractElem.appendChild( doc.createTextNode( !mLabel.isEmpty() ? mLabel : descrStr ) );
+  descrElem.appendChild( abstractElem );
   ruleElem.appendChild( descrElem );
 
   // create the ogc:Filter for the range
@@ -124,6 +126,7 @@ void QgsRendererRangeV2::toSld( QDomDocument &doc, QDomElement &element, QgsStri
                        .arg( attrName.replace( "\"", "\"\"" ) )
                        .arg( mLowerValue ).arg( mUpperValue );
   QgsSymbolLayerV2Utils::createFunctionElement( doc, filterElem, filterFunc );
+  ruleElem.appendChild( filterElem );
 
   mSymbol->toSld( doc, ruleElem, props );
 }

src/core/symbology-ng/qgssymbollayerv2utils.cpp

@@ -2057,12 +2057,12 @@ bool QgsSymbolLayerV2Utils::functionFromSldElement( QDomElement &element, QStrin
 void QgsSymbolLayerV2Utils::createOnlineResourceElement( QDomDocument &doc, QDomElement &element,
     QString path, QString format )
 {
-  QDomElement onlineResourceElem = doc.createElement( "OnlineResource" );
+  QDomElement onlineResourceElem = doc.createElement( "se:OnlineResource" );
   onlineResourceElem.setAttribute( "xlink:type", "simple" );
   onlineResourceElem.setAttribute( "xlink:href", path );
   element.appendChild( onlineResourceElem );
 
-  QDomElement formatElem = doc.createElement( "Format" );
+  QDomElement formatElem = doc.createElement( "se:Format" );
   formatElem.appendChild( doc.createTextNode( format ) );
   element.appendChild( formatElem );
 }