/*
 * Copyright (C)  Tony Green, LitePal Framework Open Source Project
 *
 * 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 org.litepal.crud.async;

/**
 * A simple async executor to run tasks in background thread.
 *
 * @author Tony Green
 * @since 2017/2/22
 */
public abstract class AsyncExecutor {

    /**
     * Task that pending to run.
     */
    private Runnable pendingTask;

    /**
     * Submit a task for pending executing.
     * @param task
     *          The task with specific database operation.
     */
    public void submit(Runnable task) {
        pendingTask = task;
    }

    /**
     * Run the pending task in background thread.
     */
    void execute() {
        if (pendingTask != null) {
            new Thread(pendingTask).start();
        }
    }

}