// This Source Code is in the Public Domain per: http://unlicense.org
package org.litesoft.bo.views.caching;

public interface CacheManager
{
    /**
     * Add a callback for a specific CacheID
     *
     * @return true if the add is successful, which requires that the CacheID & the callback are not null
     */
    boolean add( CacheID pCacheID, CacheInvalidCallBack pCacheInvalidCallBack );

    /**
     * For each CacheID notify the appropriate listeners and remove them from tracking!
     *
     * @param pCacheIDs to be invalidated (may be null and contain nulls)
     */
    void invalidate( CacheID... pCacheIDs );

    public static final CacheManager NULL = new CacheManager()
    {
        public boolean add( CacheID pCacheID, CacheInvalidCallBack pCacheInvalidCallBack )
        {
            return false;
        }

        public void invalidate( CacheID... pCacheIDs )
        {
        }
    };
}