/*
* Copyright © 2014 Cask Data, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License"); you may not
* use this file except in compliance with the License. You may obtain a copy of
* the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations under
* the License.
*/
package co.cask.cdap.hive.context;
import co.cask.cdap.common.conf.CConfiguration;
import co.cask.cdap.common.io.Codec;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
/**
* Codec to encode/decode CConfiguration object.
*/
public class CConfCodec implements Codec<CConfiguration> {
public static final CConfCodec INSTANCE = new CConfCodec();
private CConfCodec() {
// Use the static INSTANCE to get an instance.
}
@Override
public byte[] encode(CConfiguration object) throws IOException {
ByteArrayOutputStream bos = new ByteArrayOutputStream();
object.writeXml(bos);
bos.close();
return bos.toByteArray();
}
@Override
public CConfiguration decode(byte[] data) throws IOException {
if (data == null) {
return CConfiguration.create();
}
ByteArrayInputStream bin = new ByteArrayInputStream(data);
CConfiguration cConfiguration = CConfiguration.create();
cConfiguration.clear();
cConfiguration.addResource(bin);
return cConfiguration;
}
}