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    1   /*
    2    * Licensed to the Apache Software Foundation (ASF) under one or more
    3    * contributor license agreements.  See the NOTICE file distributed with
    4    * this work for additional information regarding copyright ownership.
    5    * The ASF licenses this file to You under the Apache License, Version 2.0
    6    * (the "License"); you may not use this file except in compliance with
    7    * the License.  You may obtain a copy of the License at
    8    *
    9    *      http://www.apache.org/licenses/LICENSE-2.0
    10   *
    11   * Unless required by applicable law or agreed to in writing, software
    12   * distributed under the License is distributed on an "AS IS" BASIS,
    13   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    14   * See the License for the specific language governing permissions and
    15   * limitations under the License.
    16   */
    17  package org.apache.commons.vfs.cache;
    18
    19  import org.apache.commons.vfs.FileObject;
    20
    21  import java.lang.ref.Reference;
    22  import java.lang.ref.ReferenceQueue;
    23  import java.lang.ref.WeakReference;
    24
    25  /***
    26   * This implementation caches every file as long as it is strongly reachable by
    27   * the java vm. As soon as the object is no longer reachable it will be discarded.
    28   * In contrast to the SoftRefFilesCache this implementation might free resources faster
    29   * as it don't wait until a memory limitation.
    30   *
    31   * @author <a href="mailto:imario@apache.org">Mario Ivankovits</a>
    32   * @version $Revision: 485638 $ $Date: 2005-09-30 09:02:41 +0200 (Fr, 30 Sep
    33   *          2005) $
    34   * @see java.lang.ref.WeakReference
    35   */
    36  public class WeakRefFilesCache extends SoftRefFilesCache
    37  {
    38  	protected Reference createReference(FileObject file, ReferenceQueue refqueue)
    39  	{
    40  		return new WeakReference(file, refqueue);
    41  	}
    42  }