ManyPullRequest.java

/**
 * $Id: ManyPullRequest.java 1831 2013-05-16 01:39:51Z shijia.wxr $
 */
package com.alibaba.rocketmq.broker.longpolling;

import java.util.ArrayList;
import java.util.List;


/**
 * 
 * @author vintage.wang@gmail.com shijia.wxr@taobao.com
 * 
 */
public class ManyPullRequest {
    private final ArrayList<PullRequest> pullRequestList = new ArrayList<PullRequest>();


    public synchronized void addPullRequest(final PullRequest pullRequest) {
        this.pullRequestList.add(pullRequest);
    }


    public synchronized void addPullRequest(final List<PullRequest> many) {
        this.pullRequestList.addAll(many);
    }


    public synchronized List<PullRequest> cloneListAndClear() {
        if (!this.pullRequestList.isEmpty()) {
            List<PullRequest> result = (ArrayList<PullRequest>) this.pullRequestList.clone();
            this.pullRequestList.clear();
            return result;
        }

        return null;
    }
}