Author: sklevenz
Date: Mon Feb 22 13:32:51 2010
New Revision: 912557
URL: http://svn.apache.org/viewvc?rev=912557&view=rev
Log:
LRU Client Runtime Cache introduced
https://issues.apache.org/jira/browse/CMIS-124
Added:
incubator/chemistry/trunk/opencmis/opencmis-client/opencmis-client-impl/src/test/java/org/apache/opencmis/client/runtime/misc/
incubator/chemistry/trunk/opencmis/opencmis-client/opencmis-client-impl/src/test/java/org/apache/opencmis/client/runtime/misc/CacheTest.java
(with props)
Modified:
incubator/chemistry/trunk/opencmis/opencmis-client/opencmis-client-impl/src/main/java/org/apache/opencmis/client/runtime/cache/CacheImpl.java
Modified:
incubator/chemistry/trunk/opencmis/opencmis-client/opencmis-client-impl/src/main/java/org/apache/opencmis/client/runtime/cache/CacheImpl.java
URL:
http://svn.apache.org/viewvc/incubator/chemistry/trunk/opencmis/opencmis-client/opencmis-client-impl/src/main/java/org/apache/opencmis/client/runtime/cache/CacheImpl.java?rev=912557&r1=912556&r2=912557&view=diff
==============================================================================
---
incubator/chemistry/trunk/opencmis/opencmis-client/opencmis-client-impl/src/main/java/org/apache/opencmis/client/runtime/cache/CacheImpl.java
(original)
+++
incubator/chemistry/trunk/opencmis/opencmis-client/opencmis-client-impl/src/main/java/org/apache/opencmis/client/runtime/cache/CacheImpl.java
Mon Feb 22 13:32:51 2010
@@ -19,39 +19,84 @@
package org.apache.opencmis.client.runtime.cache;
import java.io.Serializable;
+import java.util.LinkedHashMap;
+import java.util.Map;
import org.apache.opencmis.client.api.CmisObject;
-import org.apache.opencmis.commons.exceptions.CmisRuntimeException;
+/**
+ * Non synchronized cache implementation. The cache is limited to a specific
+ * size of entries and works in a LRU mode
+ */
public class CacheImpl implements Cache, Serializable {
+ private LinkedHashMap<String, CmisObject> idMap = null;
+ private LinkedHashMap<String, CmisObject> pathMap = null;
+
+ private static final float hashTableLoadFactor = 0.75f;
+
+ private int cacheSize = 1000; // default
+
/**
* serialization
*/
private static final long serialVersionUID = 1978445442452564094L;
- public boolean containsId(String objectId){
- throw new CmisRuntimeException("not implemented");
+ public CacheImpl() {
+ this.idMap = this.createLruCache();
+ this.pathMap = this.createLruCache();
+ }
+
+ public CacheImpl(int cacheSize) {
+ this.cacheSize = cacheSize;
+
+ this.idMap = this.createLruCache();
+ this.pathMap = this.createLruCache();
+ }
+
+ private LinkedHashMap<String, CmisObject> createLruCache() {
+ int hashTableCapacity = (int) Math
+ .ceil(cacheSize / hashTableLoadFactor) + 1;
+
+ LinkedHashMap<String, CmisObject> map = new
LinkedHashMap<String, CmisObject>(
+ hashTableCapacity, hashTableLoadFactor) {
+
+ // (an anonymous inner class)
+ private static final long serialVersionUID =
-3928413932856712672L;
+
+ @Override
+ protected boolean removeEldestEntry(
+ Map.Entry<String, CmisObject> eldest) {
+ return size() > CacheImpl.this.cacheSize;
+ }
+ };
+ return map;
+ }
+
+ public boolean containsId(String objectId) {
+ return this.idMap.containsKey(objectId);
}
public void clear() {
- throw new CmisRuntimeException("not implemented");
+ this.idMap.clear();
+ this.pathMap.clear();
}
public boolean containsPath(String path) {
- throw new CmisRuntimeException("not implemented");
+ return this.pathMap.containsKey(path);
}
public CmisObject get(String objectId) {
- throw new CmisRuntimeException("not implemented");
+ return this.idMap.get(objectId);
}
public CmisObject getByPath(String path) {
- throw new CmisRuntimeException("not implemented");
+ return this.pathMap.get(path);
}
public void put(CmisObject object) {
- throw new CmisRuntimeException("not implemented");
+ this.idMap.put(object.getId(), object);
+ this.pathMap.put(object.getPath(), object);
}
-
+
}
Added:
incubator/chemistry/trunk/opencmis/opencmis-client/opencmis-client-impl/src/test/java/org/apache/opencmis/client/runtime/misc/CacheTest.java
URL:
http://svn.apache.org/viewvc/incubator/chemistry/trunk/opencmis/opencmis-client/opencmis-client-impl/src/test/java/org/apache/opencmis/client/runtime/misc/CacheTest.java?rev=912557&view=auto
==============================================================================
---
incubator/chemistry/trunk/opencmis/opencmis-client/opencmis-client-impl/src/test/java/org/apache/opencmis/client/runtime/misc/CacheTest.java
(added)
+++
incubator/chemistry/trunk/opencmis/opencmis-client/opencmis-client-impl/src/test/java/org/apache/opencmis/client/runtime/misc/CacheTest.java
Mon Feb 22 13:32:51 2010
@@ -0,0 +1,107 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * 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.apache.opencmis.client.runtime.misc;
+
+import junit.framework.Assert;
+
+import org.apache.opencmis.client.api.CmisObject;
+import org.apache.opencmis.client.runtime.cache.Cache;
+import org.apache.opencmis.client.runtime.cache.CacheImpl;
+import static org.easymock.EasyMock.createNiceMock;
+import static org.easymock.EasyMock.expect;
+import static org.easymock.EasyMock.replay;
+import org.junit.Before;
+import org.junit.Test;
+
+public class CacheTest {
+
+ @Before
+ public void setup() {
+ }
+
+ @Test
+ public void cacheSingleobject() {
+ Cache cache = new CacheImpl();
+
+ String id = "1";
+ String path = "/1";
+
+ // add object
+ CmisObject obj1 = this.createCmisObject(id, path);
+ cache.put(obj1);
+
+ // access object
+ Assert.assertTrue(cache.containsId(id));
+ Assert.assertTrue(cache.containsPath(path));
+
+ // access object
+ CmisObject obj2 = cache.get(id);
+ Assert.assertEquals(obj1, obj2);
+ CmisObject obj3 = cache.getByPath(path);
+ Assert.assertEquals(obj1, obj3);
+
+ // clear cache
+ cache.clear();
+
+ // access object (not found)
+ Assert.assertFalse(cache.containsId(id));
+ Assert.assertFalse(cache.containsPath(path));
+
+ // access object (not found)
+ CmisObject obj4 = cache.get(id);
+ Assert.assertNull(obj4);
+ CmisObject obj5 = cache.getByPath(path);
+ Assert.assertNull(obj5);
+ }
+
+ @Test
+ public void lruTest() {
+ int cacheSize = 3;
+ Cache cache = new CacheImpl(cacheSize);
+
+ for (int i = 0; i < cacheSize + 1; i++) {
+ CmisObject obj = this.createCmisObject("id" + i, "path"
+ i);
+ cache.put(obj);
+ }
+
+ Assert.assertNull(cache.get("id0")); // thrown out
+ Assert.assertNotNull(cache.get("id1"));
+ Assert.assertNotNull(cache.get("id2"));
+ Assert.assertNotNull(cache.get("id3"));
+
+ }
+
+ /**
+ * Create a Mock for testing Cache is sufficient.
+ *
+ * @param id
+ * @param path
+ * @return a mocked object
+ */
+ private CmisObject createCmisObject(String id, String path) {
+ CmisObject obj = createNiceMock(CmisObject.class);
+
+ expect(obj.getId()).andReturn(id).anyTimes();
+ expect(obj.getPath()).andReturn(path).anyTimes();
+
+ replay(obj);
+
+ return obj;
+ }
+}
Propchange:
incubator/chemistry/trunk/opencmis/opencmis-client/opencmis-client-impl/src/test/java/org/apache/opencmis/client/runtime/misc/CacheTest.java
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