Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;
/*
 * File: $RCSfile$
 *
 * Copyright (c) 2005 Wincor Nixdorf International GmbH,
 * Heinz-Nixdorf-Ring 1, 33106 Paderborn, Germany
 * All Rights Reserved.
 *
 * This software is the confidential and proprietary information
 * of Wincor Nixdorf ("Confidential Information"). You shall not
 * disclose such Confidential Information and shall use it only in
 * accordance with the terms of the license agreement you entered
 * into with Wincor Nixdorf.
 */

import java.util.List;
import java.util.Map;
import java.util.HashMap;

public class Main {
    /**
     * Merge the list of data to main list by list of key
     *
     * @param lstMain Main list
     * @param lstData List of data. Every item is also a list.
     * @param lstKey  List of key
     */
    public static void mergeData(List lstMain, List lstData, List lstKey) {
        if (lstMain == null || lstData == null || lstData.size() == 0 || lstKey == null || lstKey.size() == 0) {
            return;
        }
        for (int index1 = 0, n = lstMain.size(); index1 < n; index1++) {
            Map mapMain = (Map) lstMain.get(index1);
            Map keyValue = new HashMap();
            for (int index2 = 0, m = lstKey.size(); index2 < m; index2++) {
                Object key = lstKey.get(index2);
                keyValue.put(key, mapMain.get(key));
            }
            for (int index2 = 0, m = lstData.size(); index2 < m; index2++) {
                List lstChild = (List) lstData.get(index2);
                for (int index3 = 0, s = lstChild.size(); index3 < s; index3++) {
                    Map mapChild = (Map) lstChild.get(index3);
                    boolean flag = true;
                    for (int index4 = 0, t = lstKey.size(); index4 < t; index4++) {
                        Object key = lstKey.get(index4);
                        Object valueFromMain = keyValue.get(key);
                        Object valueFromChild = mapChild.get(key);
                        if ((valueFromMain != null && !valueFromMain.equals(valueFromChild))
                                || (valueFromMain == null && valueFromChild != null)) {
                            flag = false;
                            break;
                        }
                    }
                    if (flag) {
                        mapMain.putAll(mapChild);
                        break;
                    }
                }
            }
        }
    }
}