--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/software/mpdl-services/mpiwg-mpdl-cms/src/de/mpg/mpiwg/berlin/mpdl/cms/transform/QueryTransformer.java	Tue Nov 27 12:35:19 2012 +0100
@@ -0,0 +1,70 @@
+package de.mpg.mpiwg.berlin.mpdl.cms.transform;
+
+import java.io.IOException;
+import java.io.StringWriter;
+import java.net.URL;
+
+import javax.xml.transform.stream.StreamSource;
+
+import de.mpg.mpiwg.berlin.mpdl.exception.ApplicationException;
+
+import net.sf.saxon.s9api.Processor;
+import net.sf.saxon.s9api.QName;
+import net.sf.saxon.s9api.SaxonApiException;
+import net.sf.saxon.s9api.Serializer;
+import net.sf.saxon.s9api.XdmAtomicValue;
+import net.sf.saxon.s9api.XdmValue;
+import net.sf.saxon.s9api.XsltCompiler;
+import net.sf.saxon.s9api.XsltExecutable;
+import net.sf.saxon.s9api.XsltTransformer;
+
+public class QueryTransformer {
+  private Processor processor;
+  private XsltCompiler xsltCompiler;
+  private XsltTransformer xsltQueryDocument;
+  
+  public QueryTransformer() throws ApplicationException {
+    init();
+  }
+  
+  private void init() throws ApplicationException {
+    try {
+      processor = new Processor(false); 
+      xsltCompiler = processor.newXsltCompiler();
+      URL queryDocumentXslUrl = QueryTransformer.class.getResource("queryDocument.xsl");
+      StreamSource xslStreamSource = new StreamSource(queryDocumentXslUrl.openStream());
+      XsltExecutable xsltExecutable = xsltCompiler.compile(xslStreamSource);
+      xsltQueryDocument = xsltExecutable.load();
+    } catch (SaxonApiException e) {
+      throw new ApplicationException(e);
+    } catch (IOException e) {
+      throw new ApplicationException(e);
+    }
+  }
+  
+  public String queryDocument(String xmlFileName, String query, String flags, String outputFormat) throws ApplicationException {
+    String pageFragment = null;
+    try {
+      StreamSource xmlDoc = new StreamSource(xmlFileName); 
+      Serializer serializer = new Serializer();
+      serializer.setOutputWriter(new StringWriter());
+      serializer.setOutputProperty(Serializer.Property.INDENT, "yes");
+      xsltQueryDocument.setSource(xmlDoc);  // needs some time for bigger documents
+      xsltQueryDocument.setDestination(serializer);
+      QName queryQName = new QName("query");
+      XdmValue queryXdmValue = new XdmAtomicValue(query);
+      QName flagsQName = new QName("flags");
+      XdmValue flagsXdmValue = new XdmAtomicValue(flags);
+      QName outputFormatQName = new QName("outputFormat");
+      XdmValue outputFormatXdmValue = new XdmAtomicValue(outputFormat);
+      xsltQueryDocument.setParameter(queryQName, queryXdmValue);
+      xsltQueryDocument.setParameter(flagsQName, flagsXdmValue);
+      xsltQueryDocument.setParameter(outputFormatQName, outputFormatXdmValue);
+      xsltQueryDocument.transform();  // needs some time for bigger documents
+      pageFragment = serializer.getOutputDestination().toString();
+    } catch (Exception e) {
+      throw new ApplicationException(e);
+    }
+    return pageFragment;
+  }
+}