com.wabacus.system.dataimport.queue.UploadFilesQueue.java Source code

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Here is the source code for com.wabacus.system.dataimport.queue.UploadFilesQueue.java

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/* 
 * Copyright (C) 2010---2014 (wuweixing)<349446658@qq.com>
 * 
 * This file is part of Wabacus 
 * 
 * Wabacus is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
package com.wabacus.system.dataimport.queue;

import java.io.File;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;

import org.apache.commons.fileupload.FileItem;

import com.wabacus.system.dataimport.DataImportItem;

public class UploadFilesQueue {
    private static UploadFilesQueue instance = new UploadFilesQueue();

    private List<Map<List<DataImportItem>, Map<File, FileItem>>> queueInstance;

    private UploadFilesQueue() {
        queueInstance = new ArrayList<Map<List<DataImportItem>, Map<File, FileItem>>>();
    }

    public static UploadFilesQueue getInstance() {
        return instance;
    }

    public void addUploadFile(Map<List<DataImportItem>, Map<File, FileItem>> uploadFile) {
        synchronized (queueInstance) {
            if (uploadFile != null && uploadFile.size() > 0) {
                queueInstance.add(uploadFile);
                queueInstance.notifyAll();
            }
        }
    }

    public Map<List<DataImportItem>, Map<File, FileItem>> getUploadFile() {
        synchronized (queueInstance) {
            while (queueInstance.size() == 0) {
                try {
                    queueInstance.wait();
                } catch (InterruptedException e) {
                    e.printStackTrace();
                }
            }
            return queueInstance.remove(0);
        }
    }

    public List<Map<List<DataImportItem>, Map<File, FileItem>>> getLstAllUploadFiles() {
        synchronized (queueInstance) {
            while (queueInstance.size() == 0) {
                try {
                    queueInstance.wait();
                } catch (InterruptedException e) {
                    e.printStackTrace();
                }
            }
            List<Map<List<DataImportItem>, Map<File, FileItem>>> lstResults = new ArrayList<Map<List<DataImportItem>, Map<File, FileItem>>>();
            lstResults.addAll(queueInstance);
            queueInstance.clear();
            return lstResults;
        }
    }

    public void notifyAllThread() {
        synchronized (queueInstance) {
            queueInstance.notifyAll();
        }
    }
}