/*
* Copyright Terracotta, Inc.
*
* 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.ehcache.jsr107;
import java.util.concurrent.
ConcurrentHashMap;
import java.util.concurrent.
ConcurrentMap;
import org.ehcache.spi.loaderwriter.
CacheLoaderWriter;
import org.ehcache.impl.internal.spi.loaderwriter.
DefaultCacheLoaderWriterProvider;
/**
* @author teck
*/
class
Eh107CacheLoaderWriterProvider extends
DefaultCacheLoaderWriterProvider {
private final
ConcurrentMap<
String,
CacheLoaderWriter<?, ?>>
cacheLoaderWriters = new
ConcurrentHashMap<
String,
CacheLoaderWriter<?, ?>>();
public
Eh107CacheLoaderWriterProvider() {
super(null);
}
@
SuppressWarnings("unchecked")
@
Override
public <K, V>
CacheLoaderWriter<? super K, V>
createCacheLoaderWriter(
String alias,
org.ehcache.config.
CacheConfiguration<K, V>
cacheConfiguration) {
CacheLoaderWriter<?, ?>
cacheLoaderWriter =
cacheLoaderWriters.
remove(
alias);
if (
cacheLoaderWriter == null) {
return super.createCacheLoaderWriter(
alias,
cacheConfiguration);
}
return (
CacheLoaderWriter<? super K, V>)
cacheLoaderWriter;
}
@
Override
public void
releaseCacheLoaderWriter(
CacheLoaderWriter<?, ?>
cacheLoaderWriter) {
//
}
<K, V> void
registerJsr107Loader(
String alias,
CacheLoaderWriter<K, V>
cacheLoaderWriter) {
CacheLoaderWriter<?, ?>
prev =
cacheLoaderWriters.
putIfAbsent(
alias,
cacheLoaderWriter);
if (
prev != null) {
throw new
IllegalStateException("loader already registered for [" +
alias + "]");
}
}
}