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 }