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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 org.apache.xerces.dom;
/**
* Entity nodes hold the reference data for an XML Entity -- either
* parsed or unparsed. The nodeName (inherited from Node) will contain
* the name (if any) of the Entity. Its data will be contained in the
* Entity's children, in exactly the structure which an
* EntityReference to this name will present within the document's
* body.
*
* Note that this object models the actual entity, _not_ the entity
* declaration or the entity reference.
*
* An XML processor may choose to completely expand entities before
* the structure model is passed to the DOM; in this case, there will
* be no EntityReferences in the DOM tree.
*
* Quoting the 10/01 DOM Proposal,
*
* "The DOM Level 1 does not support editing Entity nodes; if a user
* wants to make changes to the contents of an Entity, every related
* EntityReference node has to be replaced in the structure model by
* a clone of the Entity's contents, and then the desired changes
* must be made to each of those clones instead. All the
* descendants of an Entity node are readonly."
*
* I'm interpreting this as: It is the parser's responsibilty to call
* the non-DOM operation setReadOnly(true,true) after it constructs
* the Entity. Since the DOM explicitly decided not to deal with this,
* _any_ answer will involve a non-DOM operation, and this is the
* simplest solution.
*
* @xerces.internal
*
* @version $Id: DeferredEntityImpl.java 447266 2006-09-18 05:57:49Z mrglavas $
* @since PR-DOM-Level-1-19980818.
*/
public class DeferredEntityImpl
extends EntityImpl
implements DeferredNode {
//
// Constants
//
/** Serialization version. */
static final long serialVersionUID = 4760180431078941638L;
//
// Data
//
/** Node index. */
protected transient int fNodeIndex;
//
// Constructors
//
/**
* This is the deferred constructor. Only the fNodeIndex is given here.
* All other data, can be requested from the ownerDocument via the index.
*/
DeferredEntityImpl(DeferredDocumentImpl ownerDocument, int nodeIndex) {
super(ownerDocument, null);
fNodeIndex = nodeIndex;
needsSyncData(true);
needsSyncChildren(true);
} // (DeferredDocumentImpl,int)
//
// DeferredNode methods
//
/** Returns the node index. */
public int getNodeIndex() {
return fNodeIndex;
}
//
// Protected methods
//
/**
* Synchronize the entity data. This is special because of the way
* that the "fast" version stores the information.
*/
protected void synchronizeData() {
// no need to sychronize again
needsSyncData(false);
// get the node data
DeferredDocumentImpl ownerDocument =
(DeferredDocumentImpl)this.ownerDocument;
name = ownerDocument.getNodeName(fNodeIndex);
// get the entity data
publicId = ownerDocument.getNodeValue(fNodeIndex);
systemId = ownerDocument.getNodeURI(fNodeIndex);
int extraDataIndex = ownerDocument.getNodeExtra(fNodeIndex);
ownerDocument.getNodeType(extraDataIndex);
notationName = ownerDocument.getNodeName(extraDataIndex);
// encoding and version DOM L3
version = ownerDocument.getNodeValue(extraDataIndex);
encoding = ownerDocument.getNodeURI(extraDataIndex);
// baseURI, actualEncoding DOM L3
int extraIndex2 = ownerDocument.getNodeExtra(extraDataIndex);
baseURI = ownerDocument.getNodeName(extraIndex2);
inputEncoding = ownerDocument.getNodeValue(extraIndex2);
} // synchronizeData()
/** Synchronize the children. */
protected void synchronizeChildren() {
// no need to synchronize again
needsSyncChildren(false);
isReadOnly(false);
DeferredDocumentImpl ownerDocument =
(DeferredDocumentImpl) ownerDocument();
ownerDocument.synchronizeChildren(this, fNodeIndex);
setReadOnly(true, true);
} // synchronizeChildren()
} // class DeferredEntityImpl