scheduler/src/main/java/org/apache/karaf/scheduler/SchedulerStorage.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.karaf.scheduler;

import java.io.Serializable;

/**
 * A job storage definition. It's easily extensible to match user needs.
 */
public interface SchedulerStorage {

    /**
     * Retrieve a job from the store.
     */
    <T> T get(final Serializable key);

    /**
     * Add a job in the store.
     */
    void put(final Serializable key, final Object value);

    /**
     * Check if the job exists in the store.
     */
    boolean contains(final Serializable key);

    /**
     * Release a job from the store.
     */
    void release(final Serializable key);

}