/*
 * Copyright [2013] [Cloud4SOA, www.cloud4soa.eu]
 *
 *
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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 utils;

import javax.xml.parsers.*;
import org.xml.sax.InputSource;
import org.w3c.dom.*;
import java.io.*;

public class ParseXmlString {




  public static void main(String args[]) {

    String xml_string="<data>" +
      " <employee>" +
      "   <name>John</name>" +
      "   <title>Manager" +
        "          <name2>John2</name2>"+
              "</title>" +
      " </employee>" +
      " <employee>" +
      "   <name>Sara</name>" +
      "   <title>Clerk" +
        "          <name2>John32</name2>"+
              "</title>" +
      " </employee>" +
      "</data>";

  String element_name="employee";

ParseXmlString tmp= new ParseXmlString();
tmp.parse(xml_string, element_name,"name2");
      
  }
  public void parse_print(String xml_string, String element_name) {

    

    try {
        DocumentBuilderFactory dbf =
            DocumentBuilderFactory.newInstance();
        DocumentBuilder db = dbf.newDocumentBuilder();
        InputSource is = new InputSource();
        is.setCharacterStream(new StringReader(xml_string));

        Document doc = db.parse(is);
        NodeList nodes = doc.getElementsByTagName(element_name);

        // iterate the employees
        for (int i = 0; i < nodes.getLength(); i++) {
           Element element = (Element) nodes.item(i);

           NodeList name = element.getElementsByTagName("name2");
           Element line = (Element) name.item(0);
           System.out.println("Name2: " + getCharacterDataFromElement(line));

           NodeList title = element.getElementsByTagName("title");
           line = (Element) title.item(0);
           System.out.println("Title: " + getCharacterDataFromElement(line));
        }
    }
    catch (Exception e) {
        e.printStackTrace();
    }
    /*
    output :
        Name: John
        Title: Manager
        Name: Sara
        Title: Clerk
    */

  }


  public String parse(String xml_string,String root_element, String element_name) {

      String ret="";
    try {
        DocumentBuilderFactory dbf =
            DocumentBuilderFactory.newInstance();
        DocumentBuilder db = dbf.newDocumentBuilder();
        InputSource is = new InputSource();
        is.setCharacterStream(new StringReader(xml_string));

        Document doc = db.parse(is);
        NodeList nodes = doc.getElementsByTagName(root_element);

        // iterate the employees
        //for (int i = 0; i < nodes.getLength(); i++) {
        Element element = (Element) nodes.item(0);

        NodeList name = element.getElementsByTagName(element_name);
        Element line = (Element) name.item(0);
        System.out.println(element_name+" : " + getCharacterDataFromElement(line));
        ret=getCharacterDataFromElement(line);
       // NodeList title = element.getElementsByTagName("title");
     //   line = (Element) title.item(0);
       // System.out.println("Title: " + getCharacterDataFromElement(line));
     //   }
    }
    catch (Exception e) {
        e.printStackTrace();
    }


      return ret;
  }

  public static String getCharacterDataFromElement(Element e) {
    Node child = e.getFirstChild();
    if (child instanceof CharacterData) {
       CharacterData cd = (CharacterData) child;
       return cd.getData();
    }
    return "?";
  }
}