317 lines
9.9 KiB
Java
317 lines
9.9 KiB
Java
/*
|
|
* Copyright (c) 1997, 2010, Oracle and/or its affiliates. All rights reserved.
|
|
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
|
|
*
|
|
* This code is free software; you can redistribute it and/or modify it
|
|
* under the terms of the GNU General Public License version 2 only, as
|
|
* published by the Free Software Foundation. Oracle designates this
|
|
* particular file as subject to the "Classpath" exception as provided
|
|
* by Oracle in the LICENSE file that accompanied this code.
|
|
*
|
|
* This code is distributed in the hope that it will be useful, but WITHOUT
|
|
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
|
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
|
|
* version 2 for more details (a copy is included in the LICENSE file that
|
|
* accompanied this code).
|
|
*
|
|
* You should have received a copy of the GNU General Public License version
|
|
* 2 along with this work; if not, write to the Free Software Foundation,
|
|
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
|
|
*
|
|
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
|
|
* or visit www.oracle.com if you need additional information or have any
|
|
* questions.
|
|
*/
|
|
|
|
package com.sun.xml.internal.bind.unmarshaller;
|
|
|
|
import java.util.Enumeration;
|
|
|
|
import javax.xml.bind.ValidationEventLocator;
|
|
import javax.xml.bind.helpers.AbstractUnmarshallerImpl;
|
|
import javax.xml.bind.helpers.ValidationEventLocatorImpl;
|
|
|
|
import com.sun.xml.internal.bind.v2.runtime.unmarshaller.LocatorEx;
|
|
|
|
import org.w3c.dom.Attr;
|
|
import org.w3c.dom.Document;
|
|
import org.w3c.dom.Element;
|
|
import org.w3c.dom.NamedNodeMap;
|
|
import org.w3c.dom.Node;
|
|
import org.w3c.dom.NodeList;
|
|
import org.w3c.dom.ProcessingInstruction;
|
|
import org.xml.sax.ContentHandler;
|
|
import org.xml.sax.Locator;
|
|
import org.xml.sax.SAXException;
|
|
import org.xml.sax.helpers.AttributesImpl;
|
|
import org.xml.sax.helpers.NamespaceSupport;
|
|
|
|
/**
|
|
* Visits a W3C DOM tree and generates SAX2 events from it.
|
|
*
|
|
* <p>
|
|
* This class is just intended to be used by {@link AbstractUnmarshallerImpl}.
|
|
* The javax.xml.bind.helpers package is generally a wrong place to put
|
|
* classes like this.
|
|
*
|
|
* @author <ul><li>Kohsuke Kawaguchi, Sun Microsystems, Inc.</li></ul>
|
|
* @since JAXB1.0
|
|
*/
|
|
public class DOMScanner implements LocatorEx,InfosetScanner/*<Node> --- but can't do this to protect 1.0 clients, or can I? */
|
|
{
|
|
|
|
/** reference to the current node being scanned - used for determining
|
|
* location info for validation events */
|
|
private Node currentNode = null;
|
|
|
|
/** To save memory, only one instance of AttributesImpl will be used. */
|
|
private final AttributesImpl atts = new AttributesImpl();
|
|
|
|
/** This handler will receive SAX2 events. */
|
|
private ContentHandler receiver=null;
|
|
|
|
private Locator locator=this;
|
|
|
|
public DOMScanner() {
|
|
}
|
|
|
|
|
|
/**
|
|
* Configures the locator object that the SAX {@link ContentHandler} will see.
|
|
*/
|
|
public void setLocator( Locator loc ) {
|
|
this.locator = loc;
|
|
}
|
|
|
|
public void scan(Object node) throws SAXException {
|
|
if( node instanceof Document ) {
|
|
scan( (Document)node );
|
|
} else {
|
|
scan( (Element)node );
|
|
}
|
|
}
|
|
|
|
public void scan( Document doc ) throws SAXException {
|
|
scan( doc.getDocumentElement() );
|
|
}
|
|
|
|
public void scan( Element e) throws SAXException {
|
|
setCurrentLocation( e );
|
|
|
|
receiver.setDocumentLocator(locator);
|
|
receiver.startDocument();
|
|
|
|
NamespaceSupport nss = new NamespaceSupport();
|
|
buildNamespaceSupport( nss, e.getParentNode() );
|
|
|
|
for( Enumeration en = nss.getPrefixes(); en.hasMoreElements(); ) {
|
|
String prefix = (String)en.nextElement();
|
|
receiver.startPrefixMapping( prefix, nss.getURI(prefix) );
|
|
}
|
|
|
|
visit(e);
|
|
|
|
for( Enumeration en = nss.getPrefixes(); en.hasMoreElements(); ) {
|
|
String prefix = (String)en.nextElement();
|
|
receiver.endPrefixMapping( prefix );
|
|
}
|
|
|
|
|
|
setCurrentLocation( e );
|
|
receiver.endDocument();
|
|
}
|
|
|
|
/**
|
|
* Parses a subtree starting from the element e and
|
|
* reports SAX2 events to the specified handler.
|
|
*
|
|
* @deprecated in JAXB 2.0
|
|
* Use {@link #scan(Element)}
|
|
*/
|
|
public void parse( Element e, ContentHandler handler ) throws SAXException {
|
|
// it might be better to set receiver at the constructor.
|
|
receiver = handler;
|
|
|
|
setCurrentLocation( e );
|
|
receiver.startDocument();
|
|
|
|
receiver.setDocumentLocator(locator);
|
|
visit(e);
|
|
|
|
setCurrentLocation( e );
|
|
receiver.endDocument();
|
|
}
|
|
|
|
/**
|
|
* Similar to the parse method but it visits the ancestor nodes
|
|
* and properly emulate the all in-scope namespace declarations.
|
|
*
|
|
* @deprecated in JAXB 2.0
|
|
* Use {@link #scan(Element)}
|
|
*/
|
|
public void parseWithContext( Element e, ContentHandler handler ) throws SAXException {
|
|
setContentHandler(handler);
|
|
scan(e);
|
|
}
|
|
|
|
/**
|
|
* Recursively visit ancestors and build up {@link NamespaceSupport} oject.
|
|
*/
|
|
private void buildNamespaceSupport(NamespaceSupport nss, Node node) {
|
|
if(node==null || node.getNodeType()!=Node.ELEMENT_NODE)
|
|
return;
|
|
|
|
buildNamespaceSupport( nss, node.getParentNode() );
|
|
|
|
nss.pushContext();
|
|
NamedNodeMap atts = node.getAttributes();
|
|
for( int i=0; i<atts.getLength(); i++ ) {
|
|
Attr a = (Attr)atts.item(i);
|
|
if( "xmlns".equals(a.getPrefix()) ) {
|
|
nss.declarePrefix( a.getLocalName(), a.getValue() );
|
|
continue;
|
|
}
|
|
if( "xmlns".equals(a.getName()) ) {
|
|
nss.declarePrefix( "", a.getValue() );
|
|
continue;
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Visits an element and its subtree.
|
|
*/
|
|
public void visit( Element e ) throws SAXException {
|
|
setCurrentLocation( e );
|
|
final NamedNodeMap attributes = e.getAttributes();
|
|
|
|
atts.clear();
|
|
int len = attributes==null ? 0: attributes.getLength();
|
|
|
|
for( int i=len-1; i>=0; i-- ) {
|
|
Attr a = (Attr)attributes.item(i);
|
|
String name = a.getName();
|
|
// start namespace binding
|
|
if(name.startsWith("xmlns")) {
|
|
if(name.length()==5) {
|
|
receiver.startPrefixMapping( "", a.getValue() );
|
|
} else {
|
|
String localName = a.getLocalName();
|
|
if(localName==null) {
|
|
// DOM built without namespace support has this problem
|
|
localName = name.substring(6);
|
|
}
|
|
receiver.startPrefixMapping( localName, a.getValue() );
|
|
}
|
|
continue;
|
|
}
|
|
|
|
String uri = a.getNamespaceURI();
|
|
if(uri==null) uri="";
|
|
|
|
String local = a.getLocalName();
|
|
if(local==null) local = a.getName();
|
|
// add other attributes to the attribute list
|
|
// that we will pass to the ContentHandler
|
|
atts.addAttribute(
|
|
uri,
|
|
local,
|
|
a.getName(),
|
|
"CDATA",
|
|
a.getValue());
|
|
}
|
|
|
|
String uri = e.getNamespaceURI();
|
|
if(uri==null) uri="";
|
|
String local = e.getLocalName();
|
|
String qname = e.getTagName();
|
|
if(local==null) local = qname;
|
|
receiver.startElement( uri, local, qname, atts );
|
|
|
|
// visit its children
|
|
NodeList children = e.getChildNodes();
|
|
int clen = children.getLength();
|
|
for( int i=0; i<clen; i++ )
|
|
visit(children.item(i));
|
|
|
|
|
|
|
|
setCurrentLocation( e );
|
|
receiver.endElement( uri, local, qname );
|
|
|
|
// call the endPrefixMapping method
|
|
for( int i=len-1; i>=0; i-- ) {
|
|
Attr a = (Attr)attributes.item(i);
|
|
String name = a.getName();
|
|
if(name.startsWith("xmlns")) {
|
|
if(name.length()==5)
|
|
receiver.endPrefixMapping("");
|
|
else
|
|
receiver.endPrefixMapping(a.getLocalName());
|
|
}
|
|
}
|
|
}
|
|
|
|
private void visit( Node n ) throws SAXException {
|
|
setCurrentLocation( n );
|
|
|
|
// if a case statement gets too big, it should be made into a separate method.
|
|
switch(n.getNodeType()) {
|
|
case Node.CDATA_SECTION_NODE:
|
|
case Node.TEXT_NODE:
|
|
String value = n.getNodeValue();
|
|
receiver.characters( value.toCharArray(), 0, value.length() );
|
|
break;
|
|
case Node.ELEMENT_NODE:
|
|
visit( (Element)n );
|
|
break;
|
|
case Node.ENTITY_REFERENCE_NODE:
|
|
receiver.skippedEntity(n.getNodeName());
|
|
break;
|
|
case Node.PROCESSING_INSTRUCTION_NODE:
|
|
ProcessingInstruction pi = (ProcessingInstruction)n;
|
|
receiver.processingInstruction(pi.getTarget(),pi.getData());
|
|
break;
|
|
}
|
|
}
|
|
|
|
private void setCurrentLocation( Node currNode ) {
|
|
currentNode = currNode;
|
|
}
|
|
|
|
/**
|
|
* The same as {@link #getCurrentElement()} but
|
|
* better typed.
|
|
*/
|
|
public Node getCurrentLocation() {
|
|
return currentNode;
|
|
}
|
|
|
|
public Object getCurrentElement() {
|
|
return currentNode;
|
|
}
|
|
|
|
public LocatorEx getLocator() {
|
|
return this;
|
|
}
|
|
|
|
public void setContentHandler(ContentHandler handler) {
|
|
this.receiver = handler;
|
|
}
|
|
|
|
public ContentHandler getContentHandler() {
|
|
return this.receiver;
|
|
}
|
|
|
|
|
|
// LocatorEx implementation
|
|
public String getPublicId() { return null; }
|
|
public String getSystemId() { return null; }
|
|
public int getLineNumber() { return -1; }
|
|
public int getColumnNumber() { return -1; }
|
|
|
|
public ValidationEventLocator getLocation() {
|
|
return new ValidationEventLocatorImpl(getCurrentLocation());
|
|
}
|
|
}
|