AbstractWritableTest.java

/**
 * Copyright 2008 the original author or authors.
 *
 * 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 net.sf.katta;

import java.io.IOException;

import org.apache.hadoop.io.DataInputBuffer;
import org.apache.hadoop.io.DataOutputBuffer;
import org.apache.hadoop.io.Writable;

/**
 * Abstract base test for {@link Writable}s.
 */
public abstract class AbstractWritableTest extends AbstractTest {

  protected DataOutputBuffer writeWritable(Writable writable) throws IOException {
    DataOutputBuffer out = new DataOutputBuffer(1024);
    writable.write(out);
    out.flush();
    return out;
  }

  protected Writable readWritable(DataOutputBuffer out, Writable writable) throws IOException {
    DataInputBuffer inputBuffer = new DataInputBuffer();
    inputBuffer.reset(out.getData(), out.getData().length);
    writable.readFields(inputBuffer);
    return writable;
  }

}