EDIT

package eu.etaxonomy.cdm.jaxb;

import java.io.File;

import java.io.IOException;

import java.io.Writer;

import javax.xml.bind.JAXBContext;

import javax.xml.bind.JAXBException;

import javax.xml.bind.Marshaller;

import javax.xml.bind.Unmarshaller;

import org.apache.commons.logging.Log;

import org.apache.commons.logging.LogFactory;

import org.xml.sax.SAXException;

/*

Initializes a JaxbContext with one class (eu.etaxonomy.cdm.model.DataSet) 

Binds it to XML schemas found in /src/main/resources/schema/cdm (cdm.xsd, common.xsd, name.xsd).

There is a bit of magic with a resource resolver in eu.etaxonomy.cdm.jaxb

which allows to package the schemas into a jar file.

*/

public class CdmDocumentBuilder {

	private static Log log = LogFactory.getLog(CdmDocumentBuilder.class);

	private JAXBContext jaxbContext;

//	public static String CDM_NAMESPACE = "eu.etaxonomy.cdm.model";

//	public static String[] CDM_SCHEMA_FILES = { "/schema/cdm/common.xsd",

//		                                        "/schema/cdm/name.xsd",

//		                                        "/schema/cdm/cdm.xsd" };

	public CdmDocumentBuilder() throws SAXException, JAXBException, IOException {

//		SchemaFactory schemaFactory = SchemaFactory.newInstance(XMLConstants.W3C_XML_SCHEMA_NS_URI);

//		schemaFactory.setResourceResolver(new CdmResourceResolver());

//		Source[] sources = new Source[CdmDocumentBuilder.CDM_SCHEMA_FILES.length];

//		

//		for(int i = 0; i < CdmDocumentBuilder.CDM_SCHEMA_FILES.length; i++) {

//			String schemaName = CdmDocumentBuilder.CDM_SCHEMA_FILES[i];

//			sources[i] = new StreamSource(this.getClass().getResourceAsStream(schemaName));

//		}

//		Schema cdmSchema = schemaFactory.newSchema(sources);

		jaxbContext = JAXBContext.newInstance(new Class[] {DataSet.class});

		log.debug(jaxbContext.toString());

	}

	public void marshal(Object object, Writer writer) throws JAXBException {

		Marshaller marshaller;

		marshaller = jaxbContext.createMarshaller();

		// For test purposes insert newlines to make the XML output readable

		marshaller.setProperty(Marshaller.JAXB_FORMATTED_OUTPUT, Boolean.TRUE);

		// UTF-8 encoding delivers error when unmarshalling

		//marshaller.setProperty(Marshaller.JAXB_ENCODING, "UTF-8");

		marshaller.setProperty(Marshaller.JAXB_ENCODING, "ISO-8859-1");

		// validate with explicit schema

		//marshaller.setSchema(cdmSchema);

		marshaller.marshal(object, writer);

	}

	public void marshal(DataSet dataSet, Writer writer) throws JAXBException {

		Marshaller marshaller;

		marshaller = jaxbContext.createMarshaller();

		// For test purposes insert newlines to make the XML output readable

		marshaller.setProperty(Marshaller.JAXB_FORMATTED_OUTPUT, Boolean.TRUE);

		// UTF-8 encoding delivers error when unmarshalling

		//marshaller.setProperty(Marshaller.JAXB_ENCODING, "UTF-8");

		marshaller.setProperty(Marshaller.JAXB_ENCODING, "ISO-8859-1");

		CdmMarshallerListener marshallerListener = new CdmMarshallerListener();

		marshaller.setListener(marshallerListener);

		// validate with explicit schema

		//marshaller.setSchema(cdmSchema);

		marshaller.marshal(dataSet, writer);

	}

	public DataSet unmarshal(DataSet dataSet, File file) throws JAXBException {

		Unmarshaller unmarshaller;

		unmarshaller = jaxbContext.createUnmarshaller();

		// DefaultValidationEventHandler implementation is part of the API and convenient for trouble-shooting.

		// It prints errors to System.out.

		//unmarshaller.setEventHandler(new javax.xml.bind.helpers.DefaultValidationEventHandler());

		dataSet = (DataSet) unmarshaller.unmarshal(file);

		return dataSet;

	}

//	public void write(DataSet dataSet, Writer writer) throws JAXBException {

//		marshaller.marshal(dataSet, writer);

//	}

//  can only be used with JAXB 2.1

//	public void writeFile(DataSet dataSet, File file) throws JAXBException {

//		marshaller.marshal(dataSet, file);

//	}

}