org.springframework.data.gemfire.support.GemfireCacheManager Maven / Gradle / Ivy
/*
* Copyright 2010-2013 the original author or authors.
*
* 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.springframework.data.gemfire.support;
import java.util.Collection;
import java.util.LinkedHashSet;
import java.util.Set;
import org.springframework.cache.Cache;
import org.springframework.cache.CacheManager;
import org.springframework.cache.support.AbstractCacheManager;
import org.springframework.util.Assert;
import com.gemstone.gemfire.cache.Region;
/**
* Spring Framework {@link CacheManager} backed by a Gemfire {@link com.gemstone.gemfire.cache.Cache}. Automatically
* discovers the created caches (or {@link Region}s in Gemfire terminology).
*
* @author Costin Leau
* @author David Turanski
* @author John Blum
* @see org.springframework.cache.Cache
* @see org.springframework.cache.CacheManager
* @see org.springframework.cache.support.AbstractCacheManager
* @see com.gemstone.gemfire.cache.Cache
* @see com.gemstone.gemfire.cache.Region
*/
@SuppressWarnings("unused")
public class GemfireCacheManager extends AbstractCacheManager {
private com.gemstone.gemfire.cache.Cache gemfireCache;
private Set> regions;
/**
* Loads the GemFire Cache Regions managed by this CacheManager.
*
* @return a Collection of GemFire Cache Regions (caches) to be managed by this SDG CacheManager.
* @see org.springframework.cache.Cache
* @see com.gemstone.gemfire.cache.Cache#rootRegions()
*/
@Override
protected Collection loadCaches() {
if (regions == null) {
Assert.state(gemfireCache != null, "A backing GemFire Cache is required.");
Assert.state(!gemfireCache.isClosed(), "The GemFire Cache is closed; an open instance is required.");
regions = gemfireCache.rootRegions();
}
Collection caches = new LinkedHashSet(regions.size());
for (Region region: this.regions) {
caches.add(new GemfireCache(region));
}
return caches;
}
/**
* Gets a Cache (GemFire Cache Region) by name.
*
* @param name a String indicating the name of the Cache to get.
* @return a Cache with the given name.
* @see org.springframework.cache.Cache
*/
@Override
public Cache getCache(String name) {
Cache cache = super.getCache(name);
if (cache == null) {
// check the GemFire Cache again in case the Cache (Region) was added at runtime
Region region = gemfireCache.getRegion(name);
if (region != null) {
cache = new GemfireCache(region);
addCache(cache);
}
}
return cache;
}
/**
* Sets the GemFire Cache backing this {@link CacheManager}.
*
* @param gemfireCache the GemFire Peer Cache instance.
* @see com.gemstone.gemfire.cache.Cache
*/
public void setCache(com.gemstone.gemfire.cache.Cache gemfireCache) {
this.gemfireCache = gemfireCache;
}
/**
* Sets the Regions to use (alternative to injecting the GemFire Cache).
*
* @param regions the Set of Regions (caches) managed by this CacheManager.
* @see com.gemstone.gemfire.cache.Region
*/
public void setRegions(Set> regions) {
this.regions = regions;
}
}