/*
* #!
* Ontopia Engine
* #-
* Copyright (C) 2001 - 2013 The Ontopia Project
* #-
* 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 net.ontopia.persistence.proxy;
import java.util.Collection;
import java.util.Map;
import net.ontopia.utils.StringUtils;
/**
* INTERNAL: CacheIF implementation that wraps a Map. All access is
* synchronized.
*/
public final class DefaultCache<K, V> implements CacheIF<K, V> {
protected final Map<K, V> cache;
DefaultCache(Map<K, V> cache) {
this.cache = cache;
}
public synchronized V get(K key) {
return cache.get(key);
}
public synchronized V put(K key, V value) {
return cache.put(key, value);
}
public synchronized V remove(K key, boolean notifyCluster) {
return cache.remove(key);
}
public synchronized void removeAll(Collection<K> keys, boolean notifyCluster) {
for (K key : keys) {
cache.remove(key);
}
}
public synchronized void clear(boolean notifyCluster) {
cache.clear();
}
public void writeReport(java.io.Writer out, boolean dumpCache) throws java.io.IOException {
synchronized (cache) {
out.write("<p>Cache size: " + cache.size() + "</p>\n");
if (dumpCache) {
out.write("<table>\n");
for (K key : cache.keySet()) {
if (key == null) continue;
Object val = cache.get(key);
out.write("<tr><td>");
out.write((key == null ? "null" : StringUtils.escapeHTMLEntities(key.toString())));
out.write("</td><td>");
out.write((val == null ? "null" : StringUtils.escapeHTMLEntities(val.toString())));
out.write("</td></tr>\n");
}
out.write("</table><br>\n");
}
}
}
}