commons-xml/java/src/org/apache/xml/resolver/tools/ResolvingXMLReader.java

126 lines
4.5 KiB
Java

// ResolvingXMLReader.java - An XMLReader that performs catalog resolution
/*
* The Apache Software License, Version 1.1
*
*
* Copyright (c) 2001 The Apache Software Foundation. All rights
* reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* 3. The end-user documentation included with the redistribution,
* if any, must include the following acknowledgment:
* "This product includes software developed by the
* Apache Software Foundation (http://www.apache.org/)."
* Alternately, this acknowledgment may appear in the software itself,
* if and wherever such third-party acknowledgments normally appear.
*
* 4. The names "Xalan" and "Apache Software Foundation" must
* not be used to endorse or promote products derived from this
* software without prior written permission. For written
* permission, please contact apache@apache.org.
*
* 5. Products derived from this software may not be called "Apache",
* nor may "Apache" appear in their name, without prior written
* permission of the Apache Software Foundation.
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
* ====================================================================
*
* This software consists of voluntary contributions made by many
* individuals on behalf of the Apache Software Foundation and was
* originally based on software copyright (c) 2001, International
* Business Machines Corporation., http://www.ibm.com. For more
* information on the Apache Software Foundation, please see
* <http://www.apache.org/>.
*/
package org.apache.xml.resolver.tools;
import java.io.IOException;
import java.net.URL;
import org.xml.sax.*;
import org.xml.sax.helpers.XMLFilterImpl;
import javax.xml.parsers.*;
import org.apache.xml.resolver.*;
/**
* <p>A SAX XMLReader that performs catalog-based entity resolution.</p>
*
* <p>This class implements a SAX XMLReader that performs entity resolution
* using the CatalogResolver. The actual, underlying parser is obtained
* from a SAXParserFactory.</p>
* </p>
*
* @see CatalogResolver
* @see org.xml.sax.XMLReader
*
* @author Norman Walsh
* <a href="mailto:Norman.Walsh@Sun.COM">Norman.Walsh@Sun.COM</a>
*
* @version 1.0
*/
public class ResolvingXMLReader extends ResolvingXMLFilter {
/**
* <p>Construct a new reader from the JAXP factory</p>
*
* <p>In order to do its job, a ResolvingXMLReader must in fact be
* a filter. So the only difference between this code and the filter
* code is that the constructor builds a new reader.</p>
*/
public ResolvingXMLReader() {
super();
SAXParserFactory spf = SAXParserFactory.newInstance();
try {
SAXParser parser = spf.newSAXParser();
setParent(parser.getXMLReader());
} catch (Exception ex) {
ex.printStackTrace();
}
}
/**
* <p>Construct a new reader from the JAXP factory</p>
*
* <p>In order to do its job, a ResolvingXMLReader must in fact be
* a filter. So the only difference between this code and the filter
* code is that the constructor builds a new reader.</p>
*/
public ResolvingXMLReader(CatalogManager manager) {
super(manager);
SAXParserFactory spf = SAXParserFactory.newInstance();
try {
SAXParser parser = spf.newSAXParser();
setParent(parser.getXMLReader());
} catch (Exception ex) {
ex.printStackTrace();
}
}
}