Java XML Attribute Merge mergeByAttrib(ArrayList master, ArrayList slave, String attrib)

Description

merge By Attrib

License

Open Source License

Declaration

public static ArrayList<Element> mergeByAttrib(ArrayList<Element> master, ArrayList<Element> slave,
        String attrib) throws Exception 

Method Source Code

//package com.java2s;

import java.util.ArrayList;
import java.util.Collection;
import java.util.HashMap;

import java.util.Map;

import org.w3c.dom.Element;

public class Main {
    /**/*from w  w  w .  j a  v  a 2 s. c om*/
     */
    public static ArrayList<Element> mergeByAttrib(ArrayList<Element> master, ArrayList<Element> slave,
            String attrib) throws Exception {
        Map<String, Element> masterMap = mapFromArrayListByAttribute(master, attrib);
        Map<String, Element> slaveMap = mapFromArrayListByAttribute(slave, attrib);
        slaveMap.putAll(masterMap);

        ArrayList<Element> res = new ArrayList<Element>();
        Collection<Element> collection = slaveMap.values();
        for (Element e : collection) {
            res.add(e);
        }
        return res;
    }

    public static Map<String, Element> mapFromArrayListByAttribute(ArrayList<Element> list, String attribName) {
        Map<String, Element> map = new HashMap<String, Element>();
        for (Element e : list) {
            map.put(e.getAttribute(attribName), e);
        }
        return map;
    }
}

Related

1. mergeAttributes(StartElement tag, Iterator attrs, XMLEventFactory factory)
2. mergeAttributes(StartElement tag, Iterator attrs, Iterator nsps, XMLEventFactory factory)