/**
* Copyright (c) 2005-2012 https://github.com/zhangkaitao
*
* Licensed under the Apache License, Version 2.0 (the "License");
*/
package com.github.zhangkaitao.shiro.spring;
import net.sf.ehcache.Ehcache;
import org.apache.shiro.cache.Cache;
import org.apache.shiro.cache.CacheException;
import org.apache.shiro.cache.CacheManager;
import org.apache.shiro.util.CollectionUtils;
import org.springframework.cache.support.SimpleValueWrapper;
import java.util.*;
/**
* 包装Spring cache抽象
* <p>User: Zhang Kaitao
* <p>Date: 13-3-23 上午8:26
* <p>Version: 1.0
*/
public class SpringCacheManagerWrapper implements CacheManager {
private org.springframework.cache.CacheManager cacheManager;
/**
* 设置spring cache manager
*
* @param cacheManager
*/
public void setCacheManager(org.springframework.cache.CacheManager cacheManager) {
this.cacheManager = cacheManager;
}
@Override
public <K, V> Cache<K, V> getCache(String name) throws CacheException {
org.springframework.cache.Cache springCache = cacheManager.getCache(name);
return new SpringCacheWrapper(springCache);
}
static class SpringCacheWrapper implements Cache {
private org.springframework.cache.Cache springCache;
SpringCacheWrapper(org.springframework.cache.Cache springCache) {
this.springCache = springCache;
}
@Override
public Object get(Object key) throws CacheException {
Object value = springCache.get(key);
if (value instanceof SimpleValueWrapper) {
return ((SimpleValueWrapper) value).get();
}
return value;
}
@Override
public Object put(Object key, Object value) throws CacheException {
springCache.put(key, value);
return value;
}
@Override
public Object remove(Object key) throws CacheException {
springCache.evict(key);
return null;
}
@Override
public void clear() throws CacheException {
springCache.clear();
}
@Override
public int size() {
if(springCache.getNativeCache() instanceof Ehcache) {
Ehcache ehcache = (Ehcache) springCache.getNativeCache();
return ehcache.getSize();
}
throw new UnsupportedOperationException("invoke spring cache abstract size method not supported");
}
@Override
public Set keys() {
if(springCache.getNativeCache() instanceof Ehcache) {
Ehcache ehcache = (Ehcache) springCache.getNativeCache();
return new HashSet(ehcache.getKeys());
}
throw new UnsupportedOperationException("invoke spring cache abstract keys method not supported");
}
@Override
public Collection values() {
if(springCache.getNativeCache() instanceof Ehcache) {
Ehcache ehcache = (Ehcache) springCache.getNativeCache();
List keys = ehcache.getKeys();
if (!CollectionUtils.isEmpty(keys)) {
List values = new ArrayList(keys.size());
for (Object key : keys) {
Object value = get(key);
if (value != null) {
values.add(value);
}
}
return Collections.unmodifiableList(values);
} else {
return Collections.emptyList();
}
}
throw new UnsupportedOperationException("invoke spring cache abstract values method not supported");
}
}
}