com.foreach.common.spring.localization.text.EternalLocalizedTextSetCache Maven / Gradle / Ivy
/*
* Copyright 2014 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 com.foreach.common.spring.localization.text;
import java.util.*;
/**
* Default implementation of {@link LocalizedTextSetCache} that stores an infinite number of LocalizedTextSet
* instances in a simple internal map structure, forever or until cleared.
*/
public class EternalLocalizedTextSetCache implements LocalizedTextSetCache
{
private Map cache =
Collections.synchronizedMap( new HashMap() );
/**
* Gets a {@link LocalizedTextSet} for a group of items from the cache.
*
* @param application Application to get the group of items from.
* @param group Name of the group.
* @return All items converted into a set instance.
*/
public final LocalizedTextSet getLocalizedTextSet( String application, String group ) {
return cache.get( cacheKey( application, group ) );
}
/**
* Stores a LocalizedTextSet in the cache.
*
* @param textSet LocalizedTextSet to save.
*/
public final void storeLocalizedTextSet( LocalizedTextSet textSet ) {
if ( textSet != null ) {
cache.put( cacheKey( textSet.getApplication(), textSet.getGroup() ), textSet );
}
}
private String cacheKey( String application, String group ) {
return application + group;
}
/**
* @return The number of sets in the cache.
*/
public final int size() {
return cache.size();
}
/**
* Clears the cache.
*/
public final void clear() {
cache.clear();
}
/**
* Reloads all LocalizedTextSet instances kept in the cache.
*/
public final void reload() {
for ( LocalizedTextSet set : new HashSet( cache.values() ) ) {
set.reload();
}
}
/**
* Reloads the specific LocalizedTextSet instance if kept in the cache.
*
* @param application Application of the set of items.
* @param group Group of the set of items.
*/
public final void reload( String application, String group ) {
LocalizedTextSet cachedSet = getLocalizedTextSet( application, group );
if ( cachedSet != null ) {
cachedSet.reload();
}
}
/**
* @return All LocalizedTextSet instances currently in the cache.
*/
public final Set getCachedTextSets() {
return new HashSet( cache.values() );
}
}