org.argeo.slc.repo/src/org/eclipse/aether/DefaultRepositoryCache.java

   1 /*******************************************************************************
   2  * Copyright (c) 2010, 2014 Sonatype, Inc.
   3  * All rights reserved. This program and the accompanying materials
   4  * are made available under the terms of the Eclipse Public License v1.0
   5  * which accompanies this distribution, and is available at
   6  * http://www.eclipse.org/legal/epl-v10.html
   7  *
   8  * Contributors:
   9  *    Sonatype, Inc. - initial API and implementation
  10  *******************************************************************************/
  11 package org.eclipse.aether;
  12
  13 import java.util.Map;
  14 import java.util.concurrent.ConcurrentHashMap;
  15
  16 /**
  17  * A simplistic repository cache backed by a thread-safe map. The simplistic nature of this cache makes it only suitable
  18  * for use with short-lived repository system sessions where pruning of cache data is not required.
  19  */
  20 public final class DefaultRepositoryCache
  21     implements RepositoryCache
  22 {
  23
  24     private final Map<Object, Object> cache = new ConcurrentHashMap<Object, Object>( 256 );
  25
  26     public Object get( RepositorySystemSession session, Object key )
  27     {
  28         return cache.get( key );
  29     }
  30
  31     public void put( RepositorySystemSession session, Object key, Object data )
  32     {
  33         if ( data != null )
  34         {
  35             cache.put( key, data );
  36         }
  37         else
  38         {
  39             cache.remove( key );
  40         }
  41     }
  42
  43 }