org.mule.transformer.simple.ModbusRequestToByteArray.java Source code

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Here is the source code for org.mule.transformer.simple.ModbusRequestToByteArray.java

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/*
 * Generated by the Mule project wizard. http://mule.mulesource.org
 *
 * The software in this package is published under the terms of the CPAL v1.0
 * license, a copy of which has been included with this distribution in the
 * LICENSE.txt file.
 */
package org.mule.transformer.simple;

import org.mule.transformer.AbstractTransformer;
import org.mule.api.transformer.TransformerException;
import org.apache.commons.io.output.ByteArrayOutputStream;
import net.wimpi.modbus.msg.ModbusRequest;

import java.io.DataOutput;
import java.io.DataOutputStream;

/**
 * org.mule.transformer.simple
 *
 * @author Christopher Cheng
 * @version $Id: Apr 23, 2009 6:09:16 PM
 */
public class ModbusRequestToByteArray extends AbstractTransformer {
    public ModbusRequestToByteArray() {
        registerSourceType(ModbusRequest.class);
        setReturnClass(byte[].class);
    }

    public Object doTransform(Object src, String outputEncoding) throws TransformerException {
        ModbusRequest request = (ModbusRequest) src;

        ByteArrayOutputStream os = new ByteArrayOutputStream();
        DataOutput dout = new DataOutputStream(os);
        try {

            if (!request.isHeadless()) {
                dout.writeShort(request.getTransactionID());
                dout.writeShort(request.getProtocolID());
                dout.writeShort(request.getDataLength());
            }
            dout.writeByte(request.getUnitID());
            dout.writeByte(request.getFunctionCode());
            request.writeData(dout);

            return os.toByteArray();
        } catch (Exception e) {
            e.printStackTrace(System.out);
            return null;
        }

    }
}