Changed FunctionTransform result type to node-set

* using xalan::FormatterToXercesDOM internally
** this required changes to the TransformationFacade::generate member method overloads
* TransformationFacade::generate now accepts references to xalan::FormatterListener instances
** "generate(std::basic_ostream<char>&..." instantiates a xalan::FormatterToXML and passes it to the actual generate member method
* changed ResultNodeFacade's "getNode" method into a "getResultElement" method
** xalan::FormatterToXercesDOM requires a xercesc::DOMElement instance instead of the previously available xercesc::DOMNode instance
** changed FunctionReadDirectory accordingly
* adapted FunctionTransform test case accordingly

2 files changed, 10 insertions, 11 deletions

diff --git a/src/function/read_directory.cc b/src/function/read_directory.cc
index 884963e..d5357e8 100644
--- a/src/function/read_directory.cc
+++ b/src/function/read_directory.cc
@@ -29,7 +29,7 @@ xercesc::DOMDocument* FunctionReadDirectory::constructDocument(
 	if ( boost::filesystem::is_directory(directoryPath) ) {
 		result.setAttribute("result", "success");
 
-		xercesc::DOMNode* const resultNode = result.getNode();
+		xercesc::DOMNode* const resultNode = result.getResultElement();
 
 		FilesystemContext::iterate(
 			directoryPath,
diff --git a/src/function/transform.cc b/src/function/transform.cc
index bc71125..1d22399 100644
--- a/src/function/transform.cc
+++ b/src/function/transform.cc
@@ -1,11 +1,11 @@
 #include "transform.h"
 
+#include <xalanc/XercesParserLiaison/FormatterToXercesDOM.hpp>
+
 #include <xercesc/dom/DOMDocument.hpp>
 #include <xercesc/dom/DOMImplementation.hpp>
 #include <xercesc/dom/DOMElement.hpp>
 
-#include <sstream>
-
 #include "transformation_facade.h"
 #include "support/xerces_string_guard.h"
 #include "support/dom/result_node_facade.h"
@@ -43,11 +43,11 @@ xercesc::DOMDocument* FunctionTransform::constructDocument(
 		)
 	);
 
-	xercesc::DOMNode* const rootNode(
+	xercesc::DOMElement* const rootElement(
 		domDocument->getDocumentElement()
 	);
 
-	ResultNodeFacade result(domDocument, rootNode, "transformation");
+	ResultNodeFacade result(domDocument, rootElement, "transformation");
 
 	if ( auto transformation = TransformationFacade::try_create(
 		handleErrors(result),
@@ -56,17 +56,16 @@ xercesc::DOMDocument* FunctionTransform::constructDocument(
 		this->include_resolver_
 	) ) {
 		try {
-			std::stringstream targetStream;
+			xalan::FormatterToXercesDOM formatter(
+				domDocument,
+				result.getResultElement()
+			);
 
 			transformation->generate(
-				targetStream,
+				formatter,
 				parameterObject
 			);
 
-			result.setContent(
-				targetStream.str()
-			);
-
 			result.setAttribute("result", "success");
 		}
 		catch (const ErrorCapacitor::exception& exception) {