com.sun.tools.xjc.reader.internalizer.DOMForestParser Maven / Gradle / Ivy
/*
* Copyright (c) 1997, 2018 Oracle and/or its affiliates. All rights reserved.
*
* This program and the accompanying materials are made available under the
* terms of the Eclipse Distribution License v. 1.0, which is available at
* http://www.eclipse.org/org/documents/edl-v10.php.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
package com.sun.tools.xjc.reader.internalizer;
import java.io.IOException;
import com.sun.xml.xsom.parser.XMLParser;
import org.w3c.dom.Document;
import org.xml.sax.ContentHandler;
import org.xml.sax.EntityResolver;
import org.xml.sax.ErrorHandler;
import org.xml.sax.InputSource;
import org.xml.sax.SAXException;
/**
* {@link XMLParser} implementation that
* parses XML from a DOM forest instead of parsing it from
* its original location.
*
* @author
* Kohsuke Kawaguchi ([email protected])
*/
class DOMForestParser implements XMLParser {
/** DOM forest to be "parsed". */
private final DOMForest forest;
/** Scanner object will do the actual SAX events generation. */
private final DOMForestScanner scanner;
private final XMLParser fallbackParser;
/**
* @param fallbackParser
* This parser will be used when DOMForestParser needs to parse
* documents that are not in the forest.
*/
DOMForestParser( DOMForest forest, XMLParser fallbackParser ) {
this.forest = forest;
this.scanner = new DOMForestScanner(forest);
this.fallbackParser = fallbackParser;
}
public void parse(
InputSource source,
ContentHandler contentHandler,
ErrorHandler errorHandler,
EntityResolver entityResolver )
throws SAXException, IOException {
String systemId = source.getSystemId();
Document dom = forest.get(systemId);
if(dom==null) {
// if no DOM tree is built for it,
// let the fall back parser parse the original document.
//
// for example, XSOM parses datatypes.xsd (XML Schema part 2)
// but this will never be built into the forest.
fallbackParser.parse( source, contentHandler, errorHandler, entityResolver );
return;
}
scanner.scan( dom, contentHandler );
}
}