Mega Code Archive
Use DOM L3 DOMBuilder, DOMBuilderFilter DOMWriter and other DOM L3 functionality to preparse, revalidate and safe document
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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.
*/
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.
*/
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;
}
}
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