/*
* $Id: GZipUncompressTransformer.java 21584 2011-03-18 12:17:31Z tcarlson $
* --------------------------------------------------------------------------------------
* Copyright (c) MuleSoft, Inc. All rights reserved. http://www.mulesoft.com
*
* 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.compression;
import org.mule.api.transformer.TransformerException;
import org.mule.config.i18n.MessageFactory;
import org.mule.transformer.types.DataTypeFactory;
import org.mule.util.IOUtils;
import org.mule.util.SerializationUtils;
import org.mule.util.compression.GZipCompression;
import java.io.IOException;
import java.io.InputStream;
/**
* <code>GZipCompressTransformer</code> will uncompress a byte[] or InputStream
*/
public class GZipUncompressTransformer extends AbstractCompressionTransformer
{
public GZipUncompressTransformer()
{
super();
this.setStrategy(new GZipCompression());
this.registerSourceType(DataTypeFactory.BYTE_ARRAY);
this.registerSourceType(DataTypeFactory.INPUT_STREAM);
this.setReturnDataType(DataTypeFactory.BYTE_ARRAY);
}
@Override
public Object doTransform(Object src, String outputEncoding) throws TransformerException
{
byte[] buffer;
try
{
byte[] input = null;
if (src instanceof InputStream)
{
InputStream inputStream = (InputStream) src;
try
{
input = IOUtils.toByteArray(inputStream);
}
finally
{
inputStream.close();
}
}
else
{
input = (byte[]) src;
}
buffer = getStrategy().uncompressByteArray(input);
}
catch (IOException e)
{
throw new TransformerException(
MessageFactory.createStaticMessage("Failed to uncompress message."), this, e);
}
if (!DataTypeFactory.BYTE_ARRAY.equals(getReturnDataType()))
{
return SerializationUtils.deserialize(buffer, muleContext);
}
return buffer;
}
}