All Downloads are FREE. Search and download functionalities are using the official Maven repository.

net.sf.ehcache.search.Result Maven / Gradle / Ivy

Go to download

This is the ehcache core module. Pair it with other modules for added functionality.

There is a newer version: 2.6.11
Show newest version
/**
 *  Copyright 2003-2010 Terracotta, Inc.
 *
 *  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 net.sf.ehcache.search;

import java.util.List;

/**
 * Represents a single cache entry that has been selected by a cache query.
 * 

* * @author teck * @author Greg Luck */ public interface Result { /** * Return the key for this cache entry. * * @return key object * @throws SearchException if keys were not selected by the originating query */ Object getKey() throws SearchException; /** * Return the value for this cache entry. * * @return value object. This value might be null if the value is no longer referenced * by the cache (ie. a concurrent update removed this entry). * @throws SearchException if values were not selected by the originating query */ Object getValue() throws SearchException; /** * Retrieve the given attribute value for this cache entry * * @param attribute the attribute to retrieve * @return the attribute value, or null if there is none * @throws SearchException if the given attribute was not explicitly selected by the * originating query */ T getAttribute(Attribute attribute) throws SearchException; /** * Retrieve the aggregator value(s) * * @return the aggregators value as a {@link List}. The aggregator results will be in the same order they were added to the query * @throws SearchException if no aggregators were requested in the query */ List getAggregatorResults() throws SearchException; }