Android Open Source - maze-android Xml

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Back to project page maze-android.

License

The source code is released under:

GNU General Public License

Java Source Code

/*
 *  Maze-Android//from  w w w. j  av a2s.  co m
 *  Copyright 2009, 2010, 2011, 2012 Marco Mandrioli
 *
 *  This file is part of Maze-Android.
 *
 *  Maze-Android is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 3 of the License, or
 *  (at your option) any later version.
 *
 *  Maze-Android 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 General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with Maze-Android.  If not, see <http://www.gnu.org/licenses/>.
 *
 */


package it.zavo.maze.util;

import java.io.File;
import java.io.InputStream;

import javax.xml.XMLConstants;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.transform.dom.DOMSource;
import javax.xml.validation.Schema;
import javax.xml.validation.SchemaFactory;
import javax.xml.validation.Validator;

import org.w3c.dom.Document;

/**
 * Static class implementing the methods for the handling of the XML files.
 * 
 * @author Marco Mandrioli
 */
public class Xml {
  /**
   * Performs a validation check against the XML Schema of a maze.
   * 
   * @param inputStream
   *            the input stream of the XML file to validate.
   * 
   * @return <code>true</code> if the file validates correctly,
   *         <code>false</code> otherwise.
   */
  public static boolean validate(InputStream inputStream) {
    // hook up org.xml.sax.ErrorHandler implementation.
    // schemaFactory.setErrorHandler( myErrorHandler );

    try {
      // build an XSD-aware SchemaFactory
      SchemaFactory schemaFactory = SchemaFactory
          .newInstance(XMLConstants.W3C_XML_SCHEMA_NS_URI);

      // get the custom xsd schema describing the required format for my
      // XML files.
      Schema schemaXSD = schemaFactory.newSchema(new File(
          "/raw/schema/maze.xsd"));

      // Create a Validator capable of validating XML files according to
      // my custom schema.
      Validator validator = schemaXSD.newValidator();

      // Get a parser capable of parsing vanilla XML into a DOM tree
      DocumentBuilder parser = DocumentBuilderFactory.newInstance()
          .newDocumentBuilder();

      // parse the XML purely as XML and get a DOM tree represenation.
      Document document = parser.parse(inputStream);

      // parse the XML DOM tree againts the stricter XSD schema
      validator.validate(new DOMSource(document));

    } catch (Exception e) {
      e.printStackTrace();
    }

    return true;
  }
}

Java Source Code List

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