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JPPF, the open source grid computing solution

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/*
 * JPPF.
 * Copyright (C) 2005-2015 JPPF Team.
 * http://www.jppf.org
 *
 * 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 org.jppf.io;


/**
 * Abstract implementation of the DataLocation interface.>br>
 * This class provides default implementations for the transferFrom(ReadableByteChannel, boolean) and
 * transferTo(WritableByteChannel, boolean) methods.
 * @author Laurent Cohen
 */
public abstract class AbstractDataLocation implements DataLocation {
  /**
   * The capacity of the underlying buffer.
   */
  protected int size = UNKNOWN_SIZE;

  /**
   * Determines whether a transfer has been started.
   */
  protected boolean transferring = false;

  /**
   * Get the size of the data referenced by this data location.
   * @return the data size as an int.
   */
  @Override
  public int getSize() {
    return size;
  }

  /**
   * Set the size of the data referenced by this data location.
   * @param size the data size as an int.
   */
  public void setSize(final int size) {
    this.size = size;
  }
}