InteractionCommandTransformer.java

package com.temenos.interaction.commands.mule;

/*
 * #%L
 * interaction-commands-mule
 * %%
 * Copyright (C) 2012 - 2013 Temenos Holdings N.V.
 * %%
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 * 
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 * 
 * You should have received a copy of the GNU Affero General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 * #L%
 */


import java.io.ByteArrayOutputStream;

import javax.xml.stream.XMLStreamException;

import org.mule.api.transformer.DiscoverableTransformer;
import org.mule.api.transformer.TransformerException;
import org.mule.transformer.AbstractTransformer;
import org.mule.transformer.types.DataTypeFactory;

public class InteractionCommandTransformer extends AbstractTransformer implements DiscoverableTransformer {

    private int weighting = DiscoverableTransformer. DEFAULT_PRIORITY_WEIGHTING + 1;
	private XMLWriter xmlWriter = new XMLWriter();
	
	public InteractionCommandTransformer() {
        registerSourceType(DataTypeFactory.create(ViewCommandWrapper.class));
        registerSourceType(DataTypeFactory.create(ActionCommandWrapper.class));
        setReturnDataType(DataTypeFactory.STRING);
        setName("InteractionCommandToXml");
	}
	
	@Override
	protected Object doTransform(Object src, String enc)
			throws TransformerException {
		try {
			ByteArrayOutputStream bos = new ByteArrayOutputStream();
			if (src instanceof ViewCommandWrapper)
				xmlWriter.toXml((ViewCommandWrapper) src, bos);
			if (src instanceof ActionCommandWrapper)
				xmlWriter.toXml((ActionCommandWrapper) src, bos);
			String result = new String(bos.toByteArray());
			return result;
		} catch (XMLStreamException e) {
			this.logger.error("Failed to transform command to xml", e);
			throw new TransformerException(this, e);
		}
	}

    public int getPriorityWeighting() {
        return weighting;
    }
  
    public void setPriorityWeighting(int weighting) {
        this.weighting = weighting;
    }

}