ReferenceCounted.java

package org.xmlsh.core;

import java.io.Closeable;
import java.io.IOException;
import org.xmlsh.util.IManagable;
import org.xmlsh.util.ReferenceCounter;

@SuppressWarnings("serial")
public abstract class ReferenceCounted extends ReferenceCounter
    implements IManagable, IReferenceCounted, Closeable {

  private boolean bClosed = true;

  public ReferenceCounted() {
    super();
    bClosed = true;

  }

  /*
   * (non-Javadoc)
   * 
   * @see org.xmlsh.core.IManagedHandle#release()
   */
  @Override
  final public boolean release() throws IOException {
    if(super.decrement() <= 0) {
      doClose();
      return true;
    }
    return false;
  }

  @Override
  public void addRef() {

    super.increment();
  }

  @Override
  public final void close() throws IOException {
    if(!bClosed)
      doClose();
    bClosed = true;
  }

}