SAXTransformerFactory

[Former Member]

Hello Specialists,

I've following problem (the same as described in: [; ...)

A java mapping for rendering PDF based on apache's FOP throws an exception:

...

javax.xml.transform.TransformerException: java.lang.ClassCastException:

class com.sap.aii.ib.server.mapping.execution.jaxpfactories.MappingTransformerFactory:sap.com/com.sap.xi.repository com.sap.engine.boot.loader.ResourceMultiParentClassLoader ... alive

incompatible with class javax.xml.transform.sax.SAXTransformerFactory:null at

com.sun.org.apache.xalan.internal.xsltc.trax.TransformerImpl.transform(TransformerImpl.java:670) at com.sun.org.apache.xalan.internal.xsltc.trax.TransformerImpl.transform(TransformerImpl.java:300) at de.cceag.pi.mapping.fo.java.FOPHandler.transformPDF(FOPHandler.java:85)

...

For developing I use NWDS 7.1 and JDK 1.5.0_17 ... I also tried JDK 1.5.0_22. Finally, I tried using the rt.jar from SAPs jvm (.../sapjvm_5/jre/lib).

Here a code snippet:

...
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;

import javax.xml.transform.Result;
import javax.xml.transform.Source;
import javax.xml.transform.Transformer;
import javax.xml.transform.TransformerException;
import javax.xml.transform.TransformerFactory;

import javax.xml.transform.sax.SAXResult;
import javax.xml.transform.stream.StreamSource;

import org.apache.fop.apps.FOPException;
import org.apache.fop.apps.FOUserAgent;
import org.apache.fop.apps.Fop;
import org.apache.fop.apps.FopFactory;
import org.apache.fop.apps.MimeConstants;

...

	public ByteArrayOutputStream transformPDF(ByteArrayInputStream in, ByteArrayOutputStream out)
		throws FOPException, TransformerException {

		// Step 2: Set up output stream.
		// Note: Using BufferedOutputStream for performance reasons (helpful with FileOutputStreams).
		try {
			// Step 3: Construct fop with desired output format
			Fop fop = fopFactory.newFop(MimeConstants.MIME_PDF, this.foUserAgent, out);
			
			// Step 4: Setup JAXP using identity transformer
			TransformerFactory factory = TransformerFactory.newInstance();
			// TransformerFactory factory = TransformerFactoryImpl.newInstance();
			// SAXTransformerFactory factory = (SAXTransformerFactory) SAXTransformerFactory.newInstance();

			// identity transformer
			Transformer transformer = factory.newTransformer();


			// Step 5: Setup input and output for XSLT transformation 
			// Setup input stream
			Source src = new StreamSource(in);

			// Resulting SAX events (the generated FO) must be piped through to FOP
			Result res = new SAXResult(fop.getDefaultHandler());
			
			// Step 6: Start XSLT transformation and FOP processing
			transformer.transform(src, res);

...

We use PI 7.11 SP6. The 'Use SAP XML Toolkit' option in operation mapping is deactivated.

Any ideas?

Thanks and Regards

André

[alok_yadav]

Hi André,

I'm facing same issue. Did you solve this issue ;if yes,please let me know how you did it.

Regards,

Alok

[Former Member]

Hi Alok,

unfortunately not ...

But we implemented an alternative solution for rendering PDF ... We also use CE in our landscape and we've deployed the Apache FOP libraries on the CE-server and wrap it as a service which we consume from PI ...

Regards

André