// Copyright 2008-2014 severally by the contributors

 //

 // 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, either express or implied.

 // See the License for the specific language governing permissions and

 // limitations under the License.

 package net.sf.practicalxml.util;

 import java.io.IOException;

 import javax.xml.parsers.SAXParser;

 import javax.xml.parsers.SAXParserFactory;

 import net.sf.practicalxml.XmlException;

 import org.xml.sax.InputSource;

 import org.xml.sax.SAXException;

 import org.xml.sax.helpers.XMLFilterImpl;

 /**

  *  An implementation of {@link org.xml.sax.XMLReader} based on  {@link

  *  XMLFilterImpl}, which implements the <code>parse()</code> methods

  *  (default behavior of <code>XMLFilterImpl</code> is to delegate to a

  *  parent <code>XMLReader</code>, and throw <code>NullPointerException</code>

  *  if there is no parent).

  *  <p>

  *  Since this class extends <code>XMLFilterImpl</code>, it exposes all

  *  public handler methods, and can be used to write a filtered source

  *  for an XML transform.

  *

  *  @since 1.1.1

  */

 public class SimpleXMLReader

 extends XMLFilterImpl

 {

     private SAXParser _parser;

     /**

      *  Creates a new instance, using the default configuration of {@link

      *  SAXParserFactory}. The checked exceptions thrown by the factory are

      *  caught and rethrown as <code>XmlException</code>.

      */

     public SimpleXMLReader()

     {

         try

         {

             _parser = SAXParserFactory.newInstance().newSAXParser();

         }

         catch (Exception ee)

         {

             throw new XmlException(ee);

         }

     }

     /**

      *  Creates a new instance, wrapping a pre-existing parser.

      */

     public SimpleXMLReader(SAXParser parser)

     {

         _parser = parser;

     }

     @Override

     public void parse(InputSource input)

     throws SAXException, IOException

     {

         _parser.parse(input, new XMLFilterImplBridge(this));

     }

     @Override

     public void parse(String systemId)

     throws SAXException, IOException

     {

         _parser.parse(systemId, new XMLFilterImplBridge(this));

     }

 }