openjpa-kernel/src/main/java/org/apache/openjpa/datacache/DataCachePCData.java

/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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 org.apache.openjpa.datacache;

import org.apache.openjpa.kernel.PCData;

/**
 * Specialized {@link PCData} implementation for data caching.
 *
 * @author Patrick Linskey
 */
public interface DataCachePCData
    extends PCData {

    /**
     * Whether this data is timed out.
     */
    boolean isTimedOut();

    /**
     * Gets the original timeout of this instance.
     *
     * @return -1 for no timeout ever.
     */
    long getTimeOut();
}