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Xerces2 is the next generation of high performance, fully compliant XML parsers in the Apache Xerces family. This new version of Xerces introduces the Xerces Native Interface (XNI), a complete framework for building parser components and configurations that is extremely modular and easy to program. The Apache Xerces2 parser is the reference implementation of XNI but other parser components, configurations, and parsers can be written using the Xerces Native Interface. For complete design and implementation documents, refer to the XNI Manual. Xerces2 is a fully conforming XML Schema 1.0 processor. A partial experimental implementation of the XML Schema 1.1 Structures and Datatypes Working Drafts (December 2009) and an experimental implementation of the XML Schema Definition Language (XSD): Component Designators (SCD) Candidate Recommendation (January 2010) are provided for evaluation. For more information, refer to the XML Schema page. Xerces2 also provides a complete implementation of the Document Object Model Level 3 Core and Load/Save W3C Recommendations and provides a complete implementation of the XML Inclusions (XInclude) W3C Recommendation. It also provides support for OASIS XML Catalogs v1.1. Xerces2 is able to parse documents written according to the XML 1.1 Recommendation, except that it does not yet provide an option to enable normalization checking as described in section 2.13 of this specification. It also handles namespaces according to the XML Namespaces 1.1 Recommendation, and will correctly serialize XML 1.1 documents if the DOM level 3 load/save APIs are in use.

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/*
 * 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 dom;

import org.w3c.dom.DOMConfiguration;
import org.w3c.dom.DOMError;
import org.w3c.dom.DOMErrorHandler;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.Node;
import org.w3c.dom.bootstrap.DOMImplementationRegistry;
import org.w3c.dom.ls.DOMImplementationLS;
import org.w3c.dom.ls.LSOutput;
import org.w3c.dom.ls.LSParser;
import org.w3c.dom.ls.LSParserFilter;
import org.w3c.dom.ls.LSSerializer;
import org.w3c.dom.traversal.NodeFilter;

/**
 * This sample program illustrates how to use DOM L3 
 * DOMBuilder, DOMBuilderFilter DOMWriter and other DOM L3 functionality
 * to preparse, revalidate and safe document.
 * 
 * @version $Id$
 */
public class DOM3 implements DOMErrorHandler, LSParserFilter {

    /** Default namespaces support (true). */
    protected static final boolean DEFAULT_NAMESPACES = true;

    /** Default validation support (false). */
    protected static final boolean DEFAULT_VALIDATION = false;

    /** Default Schema validation support (false). */
    protected static final boolean DEFAULT_SCHEMA_VALIDATION = false;

    static LSParser builder;
    public static void main( String[] argv) {

        if (argv.length == 0) {
            printUsage();
            System.exit(1);
        }


        try {

            // get DOM Implementation using DOM Registry
            // System.setProperty(DOMImplementationRegistry.PROPERTY,"org.apache.xerces.dom.DOMXSImplementationSourceImpl");
            DOMImplementationRegistry registry =
                DOMImplementationRegistry.newInstance();

            DOMImplementationLS impl = 
                (DOMImplementationLS)registry.getDOMImplementation("LS");

            // create DOMBuilder
            builder = impl.createLSParser(DOMImplementationLS.MODE_SYNCHRONOUS, null);
            
            DOMConfiguration config = builder.getDomConfig();

            // create Error Handler
            DOMErrorHandler errorHandler = new DOM3();
            
            // create filter
            LSParserFilter filter = new DOM3();
            
            builder.setFilter(filter);

            // set error handler
            config.setParameter("error-handler", errorHandler);


            // set validation feature
            //config.setParameter("validate", Boolean.FALSE);
            config.setParameter("validate",Boolean.TRUE);
            
            // set schema language
            config.setParameter("schema-type", "http://www.w3.org/2001/XMLSchema");
            //config.setParameter("psvi",Boolean.TRUE);
            //config.setParameter("schema-type","http://www.w3.org/TR/REC-xml");
            
            // set schema location
            config.setParameter("schema-location","personal.xsd");
            
            // parse document
            System.out.println("Parsing "+argv[0]+"...");
            Document doc = builder.parseURI(argv[0]);

            // set error handler on the Document
            config = doc.getDomConfig();
            
            config.setParameter("error-handler", errorHandler);

            // set validation feature
            config.setParameter("validate", Boolean.TRUE);
            config.setParameter("schema-type", "http://www.w3.org/2001/XMLSchema");
            //config.setParameter("schema-type","http://www.w3.org/TR/REC-xml");
            config.setParameter("schema-location","data/personal.xsd");
            
            // remove comments from the document
            config.setParameter("comments", Boolean.FALSE);

            System.out.println("Normalizing document... ");
            doc.normalizeDocument();


            // create DOMWriter
            LSSerializer domWriter = impl.createLSSerializer();
            
            System.out.println("Serializing document... ");
            config = domWriter.getDomConfig();
            config.setParameter("xml-declaration", Boolean.FALSE);
            //config.setParameter("validate",errorHandler);

            // serialize document to standard output
            //domWriter.writeNode(System.out, doc);
            LSOutput dOut = impl.createLSOutput();
            dOut.setByteStream(System.out);
            domWriter.write(doc,dOut);

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


    private static void printUsage() {

        System.err.println("usage: java dom.DOM3 uri ...");
        System.err.println();
        System.err.println("NOTE: You can only validate DOM tree against XML Schemas.");

    } // printUsage()


    public boolean handleError(DOMError error){
        short severity = error.getSeverity();
        if (severity == DOMError.SEVERITY_ERROR) {
            System.out.println("[dom3-error]: "+error.getMessage());
        }

        if (severity == DOMError.SEVERITY_WARNING) {
            System.out.println("[dom3-warning]: "+error.getMessage());
        }
        return true;

    }
	/**
	 * @see org.w3c.dom.ls.LSParserFilter#acceptNode(Node)
	 */
	public short acceptNode(Node enode) {
        return NodeFilter.FILTER_ACCEPT;
	}

	/**
	 * @see org.w3c.dom.ls.LSParserFilter#getWhatToShow()
	 */
	public int getWhatToShow() {
		return NodeFilter.SHOW_ELEMENT;
	}

	/**
	 * @see org.w3c.dom.ls.LSParserFilter#startElement(Element)
	 */
	public short startElement(Element elt) {
		return LSParserFilter.FILTER_ACCEPT;
	}

}