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Ehcache is an open source, standards-based cache used to boost performance,
offload the database and simplify scalability. Ehcache is robust, proven and full-featured and
this has made it the most widely-used Java-based cache.
/*
* All content copyright Terracotta, Inc., unless otherwise indicated. All rights reserved. Licensed 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.terracotta.modules.ehcache.collections;
import org.terracotta.toolkit.cache.ToolkitCache;
import org.terracotta.toolkit.cache.ToolkitCacheListener;
import org.terracotta.toolkit.concurrent.locks.ToolkitReadWriteLock;
import org.terracotta.toolkit.config.Configuration;
import org.terracotta.toolkit.search.QueryBuilder;
import org.terracotta.toolkit.search.attribute.ToolkitAttributeExtractor;
import java.io.IOException;
import java.io.Serializable;
import java.util.Collection;
import java.util.Collections;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Iterator;
import java.util.Map;
import java.util.Set;
/**
* An implementation of {@link ToolkitCache} that supports serializable keys
*/
public class SerializedToolkitCache implements ToolkitCache {
private final ToolkitCache toolkitCache;
public SerializedToolkitCache(ToolkitCache toolkitMap) {
this.toolkitCache = toolkitMap;
}
@Override
public int size() {
return this.toolkitCache.size();
}
@Override
public boolean isEmpty() {
return this.toolkitCache.isEmpty();
}
private static String serializeToString(Object key) {
try {
return SerializationHelper.serializeToString(key);
} catch (IOException e) {
throw new RuntimeException(e);
}
}
private static Object deserializeFromString(String key) {
try {
return SerializationHelper.deserializeFromString(key, null);
} catch (IOException e) {
throw new RuntimeException(e);
} catch (ClassNotFoundException e) {
throw new RuntimeException(e);
}
}
@Override
public boolean containsKey(Object key) {
return this.toolkitCache.containsKey(serializeToString(key));
}
@Override
public V get(Object key) {
return this.toolkitCache.get(serializeToString(key));
}
@Override
public V put(K key, V value) {
return this.toolkitCache.put(serializeToString(key), value);
}
@Override
public V remove(Object key) {
return this.toolkitCache.remove(serializeToString(key));
}
@Override
public void putAll(Map m) {
Map tempMap = new HashMap();
for (Entry entry : m.entrySet()) {
tempMap.put(serializeToString(entry.getKey()), entry.getValue());
}
toolkitCache.putAll(tempMap);
}
@Override
public void clear() {
toolkitCache.clear();
}
@Override
public Set keySet() {
return new ToolkitKeySet(toolkitCache.keySet());
}
@Override
public boolean isDestroyed() {
return toolkitCache.isDestroyed();
}
@Override
public void destroy() {
toolkitCache.destroy();
}
@Override
public String getName() {
return toolkitCache.getName();
}
@Override
public ToolkitReadWriteLock createLockForKey(K key) {
return toolkitCache.createLockForKey(serializeToString(key));
}
@Override
public void removeNoReturn(Object key) {
toolkitCache.removeNoReturn(serializeToString(key));
}
@Override
public void putNoReturn(K key, V value) {
toolkitCache.putNoReturn(serializeToString(key), value);
}
@Override
public Map getAll(Collection keys) {
HashSet tempSet = new HashSet();
for (K key : keys) {
tempSet.add(serializeToString(key));
}
Map m = toolkitCache.getAll(tempSet);
Map tempMap = m.isEmpty() ? Collections.EMPTY_MAP : new HashMap();
for (Entry entry : m.entrySet()) {
tempMap.put((K) deserializeFromString(entry.getKey()), entry.getValue());
}
return tempMap;
}
@Override
public Configuration getConfiguration() {
return toolkitCache.getConfiguration();
}
@Override
public void setConfigField(String name, Serializable value) {
toolkitCache.setConfigField(name, value);
}
@Override
public boolean containsValue(Object value) {
return toolkitCache.containsValue(value);
}
@Override
public V putIfAbsent(K key, V value) {
return toolkitCache.putIfAbsent(serializeToString(key), value);
}
@Override
public Set> entrySet() {
return new ToolkitEntrySet(this.toolkitCache.entrySet());
}
@Override
public Collection values() {
return this.toolkitCache.values();
}
@Override
public boolean remove(Object key, Object value) {
return this.toolkitCache.remove(serializeToString(key), value);
}
@Override
public boolean replace(K key, V oldValue, V newValue) {
return this.toolkitCache.replace(serializeToString(key), oldValue, newValue);
}
@Override
public V replace(K key, V value) {
return this.toolkitCache.replace(serializeToString(key), value);
}
private static class ToolkitEntrySet implements Set> {
private final Set> set;
public ToolkitEntrySet(Set> set) {
this.set = set;
}
@Override
public int size() {
return set.size();
}
@Override
public boolean isEmpty() {
return set.isEmpty();
}
@Override
public boolean contains(Object o) {
if (!(o instanceof Map.Entry)) { return false; }
Map.Entry entry = (java.util.Map.Entry) o;
ToolkitCacheEntry toolkitEntry = null;
toolkitEntry = new ToolkitCacheEntry(serializeToString(entry.getKey()), entry.getValue());
return this.set.contains(toolkitEntry);
}
@Override
public Iterator> iterator() {
return new ToolkitEntryIterator(set.iterator());
}
@Override
public Object[] toArray() {
throw new UnsupportedOperationException();
}
@Override
public T[] toArray(T[] a) {
throw new UnsupportedOperationException();
}
@Override
public boolean add(java.util.Map.Entry e) {
throw new UnsupportedOperationException();
}
@Override
public boolean remove(Object o) {
throw new UnsupportedOperationException();
}
@Override
public boolean containsAll(Collection c) {
throw new UnsupportedOperationException();
}
@Override
public boolean addAll(Collection> c) {
throw new UnsupportedOperationException();
}
@Override
public boolean retainAll(Collection c) {
throw new UnsupportedOperationException();
}
@Override
public boolean removeAll(Collection c) {
throw new UnsupportedOperationException();
}
@Override
public void clear() {
throw new UnsupportedOperationException();
}
}
private static class ToolkitEntryIterator implements Iterator> {
private final Iterator> iter;
public ToolkitEntryIterator(Iterator> iter) {
this.iter = iter;
}
@Override
public boolean hasNext() {
return iter.hasNext();
}
@Override
public java.util.Map.Entry next() {
Map.Entry entry = iter.next();
if (entry == null) { return null; }
return new ToolkitCacheEntry(deserializeFromString(entry.getKey()), entry.getValue());
}
@Override
public void remove() {
iter.remove();
}
}
private static class ToolkitCacheEntry implements Map.Entry {
private final K k;
private final V v;
public ToolkitCacheEntry(K k, V v) {
this.k = k;
this.v = v;
}
@Override
public K getKey() {
return k;
}
@Override
public V getValue() {
return v;
}
@Override
public V setValue(V value) {
throw new UnsupportedOperationException();
}
}
private static class ToolkitKeySet implements Set {
private final Set set;
public ToolkitKeySet(Set set) {
this.set = set;
}
@Override
public int size() {
return set.size();
}
@Override
public boolean isEmpty() {
return set.isEmpty();
}
@Override
public boolean contains(Object o) {
return set.contains(serializeToString(o));
}
@Override
public Iterator iterator() {
return new ToolkitKeyIterator(set.iterator());
}
@Override
public Object[] toArray() {
throw new UnsupportedOperationException();
}
@Override
public T[] toArray(T[] a) {
throw new UnsupportedOperationException();
}
@Override
public boolean add(K e) {
throw new UnsupportedOperationException();
}
@Override
public boolean remove(Object o) {
throw new UnsupportedOperationException();
}
@Override
public boolean containsAll(Collection c) {
throw new UnsupportedOperationException();
}
@Override
public boolean addAll(Collection c) {
throw new UnsupportedOperationException();
}
@Override
public boolean retainAll(Collection c) {
throw new UnsupportedOperationException();
}
@Override
public boolean removeAll(Collection c) {
throw new UnsupportedOperationException();
}
@Override
public void clear() {
throw new UnsupportedOperationException();
}
}
private static class ToolkitKeyIterator implements Iterator {
private final Iterator iter;
public ToolkitKeyIterator(Iterator iter) {
this.iter = iter;
}
@Override
public boolean hasNext() {
return iter.hasNext();
}
@Override
public K next() {
String k = iter.next();
if (k == null) { return null; }
return (K) deserializeFromString(k);
}
@Override
public void remove() {
iter.remove();
}
}
@Override
public Map getAllQuiet(Collection keys) {
HashSet tempSet = new HashSet();
for (K key : keys) {
tempSet.add(serializeToString(key));
}
Map m = toolkitCache.getAllQuiet(tempSet);
Map tempMap = m.isEmpty() ? Collections.EMPTY_MAP : new HashMap();
for (Entry entry : m.entrySet()) {
tempMap.put((K) deserializeFromString(entry.getKey()), entry.getValue());
}
return tempMap;
}
@Override
public V getQuiet(Object key) {
return this.toolkitCache.get(serializeToString(key));
}
@Override
public void putNoReturn(K key, V value, long createTimeInSecs, int customMaxTTISeconds, int customMaxTTLSeconds) {
this.toolkitCache.putNoReturn(serializeToString(key), value, createTimeInSecs, customMaxTTISeconds,
customMaxTTLSeconds);
}
@Override
public V putIfAbsent(K key, V value, long createTimeInSecs, int customMaxTTISeconds, int customMaxTTLSeconds) {
return this.toolkitCache.putIfAbsent(serializeToString(key), value, createTimeInSecs, customMaxTTISeconds,
customMaxTTLSeconds);
}
@Override
public void addListener(ToolkitCacheListener listener) {
throw new UnsupportedOperationException();
}
@Override
public void removeListener(ToolkitCacheListener listener) {
throw new UnsupportedOperationException();
}
@Override
public void setAttributeExtractor(ToolkitAttributeExtractor attrExtractor) {
this.toolkitCache.setAttributeExtractor(attrExtractor);
}
@Override
public QueryBuilder createQueryBuilder() {
return this.toolkitCache.createQueryBuilder();
}
@Override
public boolean isBulkLoadEnabled() {
return toolkitCache.isBulkLoadEnabled();
}
@Override
public boolean isNodeBulkLoadEnabled() {
return toolkitCache.isNodeBulkLoadEnabled();
}
@Override
public void setNodeBulkLoadEnabled(boolean enabledBulkLoad) {
toolkitCache.setNodeBulkLoadEnabled(enabledBulkLoad);
}
@Override
public void waitUntilBulkLoadComplete() throws InterruptedException {
toolkitCache.waitUntilBulkLoadComplete();
}
}