Android Open Source - Butler X Document

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License

The source code is released under:

Apache License

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Java Source Code

/**
 * Copyright 2013 Ricky Tobing//  w w w.ja v  a  2  s  . c  o m
 *
 * Licensed 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, pick express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.bingzer.android;

import org.w3c.dom.Element;
import org.w3c.dom.NodeList;

import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.FactoryConfigurationError;
import javax.xml.parsers.ParserConfigurationException;

@SuppressWarnings("UnusedDeclaration")
public final class XDocument {
    private static DocumentBuilder docBuilder = null;

    //////////////////////////////////////////////////////////////////////

    private XDocument(){
        // nothing
    }

    //////////////////////////////////////////////////////////////////////

  public static DocumentBuilder getXmlDocumentBuilder() throws ParserConfigurationException, FactoryConfigurationError{
    if(docBuilder == null){
      DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
      factory.setIgnoringComments(true);
      factory.setIgnoringElementContentWhitespace(true);
      factory.setNamespaceAware(true);
      docBuilder = factory.newDocumentBuilder();
    }

    return docBuilder;
  }

    //////////////////////////////////////////////////////////////////////
  
  public static String safeGetNodeValue(Element element, String tag){
    return safeGetNodeValue(element, tag, null);
  }
  
  public static String safeGetNodeValue(Element element, String tag, String namespaceUri){
    try{
      NodeList childNodes;
      if(namespaceUri != null)
        childNodes = element.getElementsByTagNameNS(namespaceUri, tag);
      else
        childNodes = element.getElementsByTagName(tag).item(0).getChildNodes();
      StringBuilder builder = new StringBuilder();
      for(int i = 0; i < childNodes.getLength(); i++){
        builder.append(childNodes.item(i).getNodeValue());
      }
      return builder.toString();
    }
    catch (Exception e){
      return Constants.Empty;
    }
  }

  public static String safeGetNodeAttributeValue(Element element, String tag, String attribute) {
    try{
      return element.getElementsByTagName(tag).item(0).getAttributes().getNamedItem(attribute).getNodeValue();
    }
    catch (Exception e){
      return Constants.Empty;
    }
  }
  
  public static String safeGetAttribute(Element element, String attribute){
    try{
      return element.getAttribute(attribute);
    }
    catch (Exception e){
      return Constants.Empty;
    }
  }
}

Java Source Code List