package com.epam.wilma.test.server.compress.fis;
/*==========================================================================
Copyright 2013-2017 EPAM Systems
This file is part of Wilma.
Wilma is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
Wilma 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 General Public License
along with Wilma. If not, see <http://www.gnu.org/licenses/>.
===========================================================================*/
import java.io.ByteArrayOutputStream;
import java.io.InputStream;
import java.io.OutputStream;
import javax.xml.transform.Transformer;
import javax.xml.transform.TransformerConfigurationException;
import javax.xml.transform.TransformerException;
import javax.xml.transform.TransformerFactory;
import javax.xml.transform.TransformerFactoryConfigurationError;
import javax.xml.transform.stream.StreamResult;
import org.jvnet.fastinfoset.FastInfosetSource;
import com.epam.wilma.test.server.SystemException;
import com.epam.wilma.test.server.compress.Decompressor;
/**
* FastInfoset implementation of the decompressor interface.
* Decompresses an InputStream that hold the information compressed with Fast InfoSet.
* @author Marton_Sereg
*
*/
public class FastInfosetDecompressor implements Decompressor {
@Override
public String decompress(final InputStream source) {
OutputStream xmlOutputStream = new ByteArrayOutputStream();
// Create the transformer
Transformer tx;
try {
tx = TransformerFactory.newInstance().newTransformer();
tx.transform(new FastInfosetSource(source), new StreamResult(xmlOutputStream));
// Transform to convert the FI document to an XML document
return xmlOutputStream.toString();
} catch (TransformerConfigurationException e) {
throw new SystemException("error", e);
} catch (TransformerFactoryConfigurationError e) {
throw new SystemException("error", e);
} catch (TransformerException e) {
throw new SystemException("error", e);
}
}
}