| package org.apache.commons.jcs.engine; |
| |
| import java.util.concurrent.ConcurrentHashMap; |
| import java.util.concurrent.ConcurrentMap; |
| |
| import org.apache.commons.jcs.engine.behavior.ICache; |
| import org.apache.commons.jcs.engine.behavior.ICacheEventQueue; |
| |
| /** |
| * Used to associates a set of [cache listener to cache event queue] for a |
| * cache. |
| */ |
| public class CacheListeners<K, V> |
| { |
| /** The cache using the queue. */ |
| public final ICache<K, V> cache; |
| |
| /** Map ICacheListener to ICacheEventQueue */ |
| public final ConcurrentMap<Long, ICacheEventQueue<K, V>> eventQMap = |
| new ConcurrentHashMap<>(); |
| |
| /** |
| * Constructs with the given cache. |
| * <p> |
| * @param cache |
| */ |
| public CacheListeners( ICache<K, V> cache ) |
| { |
| if ( cache == null ) |
| { |
| throw new IllegalArgumentException( "cache must not be null" ); |
| } |
| this.cache = cache; |
| } |
| |
| /** @return info on the listeners */ |
| @Override |
| public String toString() |
| { |
| StringBuilder buffer = new StringBuilder(); |
| buffer.append( "\n CacheListeners" ); |
| if ( cache != null ) |
| { |
| buffer.append( "\n Region = " + cache.getCacheName() ); |
| } |
| if ( eventQMap != null ) |
| { |
| buffer.append( "\n Event Queue Map " ); |
| buffer.append( "\n size = " + eventQMap.size() ); |
| eventQMap.forEach((key, value) |
| -> buffer.append( "\n Entry: key: ").append(key) |
| .append(", value: ").append(value)); |
| } |
| else |
| { |
| buffer.append( "\n No Listeners. " ); |
| } |
| return buffer.toString(); |
| } |
| } |