Moving to root below branch label

git-svn-id: https://svn.alfresco.com/repos/alfresco-enterprise/alfresco/HEAD/root@2005 c4b6b30b-aa2e-2d43-bbcb-ca4b014f7261

source/java/org/alfresco/repo/cache/EhCacheAdapter.java

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+/*
+ * Copyright (C) 2005 Alfresco, Inc.
+ *
+ * Licensed under the Mozilla Public License version 1.1 
+ * with a permitted attribution clause. You may obtain a
+ * copy of the License at
+ *
+ *   http://www.alfresco.org/legal/license.txt
+ *
+ * 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.alfresco.repo.cache;
+
+import java.io.IOException;
+import java.io.Serializable;
+
+import net.sf.ehcache.Cache;
+import net.sf.ehcache.CacheException;
+import net.sf.ehcache.Element;
+
+import org.alfresco.error.AlfrescoRuntimeException;
+
+/**
+ * A thin adapter for <b>Ehcache</b> support.
+ * <p>
+ * Thread-safety is taken care of by the underlying <b>Ehcache</b>
+ * instance.
+ *
+ * @see org.springframework.cache.ehcache.EhCacheFactoryBean
+ * @see org.springframework.cache.ehcache.EhCacheManagerFactoryBean
+ * 
+ * @author Derek Hulley
+ */
+public class EhCacheAdapter<K extends Serializable, V extends Serializable>
+        implements SimpleCache<K, V>
+{
+    private net.sf.ehcache.Cache cache;
+    
+    public EhCacheAdapter()
+    {
+    }
+
+    /**
+     * @param cache the backing Ehcache instance
+     */
+    public void setCache(Cache cache)
+    {
+        this.cache = cache;
+    }
+
+    public boolean contains(K key)
+    {
+        try
+        {
+            return (cache.get(key) != null);
+        }
+        catch (CacheException e)
+        {
+            throw new AlfrescoRuntimeException("contains failed", e);
+        }
+    }
+
+    @SuppressWarnings("unchecked")
+    public V get(K key)
+    {
+        try
+        {
+            Element element = cache.get(key);
+            if (element != null)
+            {
+                return (V) element.getValue();
+            }
+            else
+            {
+                return null;
+            }
+        }
+        catch (CacheException e)
+        {
+            throw new AlfrescoRuntimeException("Failed to get from EhCache: \n" +
+                    "   key: " + key);
+        }
+    }
+
+    public void put(K key, V value)
+    {
+        Element element = new Element(key, value);
+        cache.put(element);
+    }
+
+    public void remove(K key)
+    {
+        cache.remove(key);
+    }
+
+    public void clear()
+    {
+        try
+        {
+            cache.removeAll();
+        }
+        catch (IOException e)
+        {
+            throw new AlfrescoRuntimeException("Failed to clear cache", e);
+        }
+    }
+}