https://xerces.apache.org/xerces2-j/: 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.
/*
* 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.
*/
/*
* WARNING: because java doesn't support multi-inheritance some code is
* duplicated. If you're changing this file you probably want to change
* DeferredAttrNSImpl.java at the same time.
*/
package org.apache.xerces.dom;
Attribute represents an XML-style attribute of an
Element. Typically, the allowable values are controlled by its
declaration in the Document Type Definition (DTD) governing this
kind of document.
If the attribute has not been explicitly assigned a value, but has
been declared in the DTD, it will exist and have that default. Only
if neither the document nor the DTD specifies a value will the
Attribute really be considered absent and have no value; in that
case, querying the attribute will return null.
Attributes may have multiple children that contain their data. (XML
allows attributes to contain entity references, and tokenized
attribute types such as NMTOKENS may have a child for each token.)
For convenience, the Attribute object's getValue() method returns
the string version of the attribute's value.
Attributes are not children of the Elements they belong to, in the
usual sense, and have no valid Parent reference. However, the spec
says they _do_ belong to a specific Element, and an INUSE exception
is to be thrown if the user attempts to explicitly share them
between elements.
Note that Elements do not permit attributes to appear to be shared
(see the INUSE exception), so this object's mutability is
officially not an issue.
DeferredAttrImpl inherits from AttrImpl which does not support
Namespaces. DeferredAttrNSImpl, which inherits from AttrNSImpl, does.
Author: Andy Clark, IBM, Arnaud Le Hors, IBM See Also: - DeferredAttrNSImpl
@xerces.internal Version: $Id: DeferredAttrImpl.java 447266 2006-09-18 05:57:49Z mrglavas $ Since: PR-DOM-Level-1-19980818.
/**
* Attribute represents an XML-style attribute of an
* Element. Typically, the allowable values are controlled by its
* declaration in the Document Type Definition (DTD) governing this
* kind of document.
* <P>
* If the attribute has not been explicitly assigned a value, but has
* been declared in the DTD, it will exist and have that default. Only
* if neither the document nor the DTD specifies a value will the
* Attribute really be considered absent and have no value; in that
* case, querying the attribute will return null.
* <P>
* Attributes may have multiple children that contain their data. (XML
* allows attributes to contain entity references, and tokenized
* attribute types such as NMTOKENS may have a child for each token.)
* For convenience, the Attribute object's getValue() method returns
* the string version of the attribute's value.
* <P>
* Attributes are not children of the Elements they belong to, in the
* usual sense, and have no valid Parent reference. However, the spec
* says they _do_ belong to a specific Element, and an INUSE exception
* is to be thrown if the user attempts to explicitly share them
* between elements.
* <P>
* Note that Elements do not permit attributes to appear to be shared
* (see the INUSE exception), so this object's mutability is
* officially not an issue.
* <P>
* DeferredAttrImpl inherits from AttrImpl which does not support
* Namespaces. DeferredAttrNSImpl, which inherits from AttrNSImpl, does.
* @see DeferredAttrNSImpl
*
* @xerces.internal
*
* @author Andy Clark, IBM
* @author Arnaud Le Hors, IBM
* @version $Id: DeferredAttrImpl.java 447266 2006-09-18 05:57:49Z mrglavas $
* @since PR-DOM-Level-1-19980818.
*/
public final class DeferredAttrImpl
extends AttrImpl
implements DeferredNode {
//
// Constants
//
Serialization version. /** Serialization version. */
static final long serialVersionUID = 6903232312469148636L;
//
// Data
//
Node index. /** 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.
/**
* This is the deferred constructor. Only the fNodeIndex is given here.
* All other data, can be requested from the ownerDocument via the index.
*/
DeferredAttrImpl(DeferredDocumentImpl ownerDocument, int nodeIndex) {
super(ownerDocument, null);
fNodeIndex = nodeIndex;
needsSyncData(true);
needsSyncChildren(true);
} // <init>(DeferredDocumentImpl,int)
//
// DeferredNode methods
//
Returns the node index. /** Returns the node index. */
public int getNodeIndex() {
return fNodeIndex;
}
//
// Protected methods
//
Synchronizes the data (name and value) for fast nodes. /** Synchronizes the data (name and value) for fast nodes. */
protected void synchronizeData() {
// no need to sync in the future
needsSyncData(false);
// fluff data
DeferredDocumentImpl ownerDocument =
(DeferredDocumentImpl) ownerDocument();
name = ownerDocument.getNodeName(fNodeIndex);
int extra = ownerDocument.getNodeExtra(fNodeIndex);
isSpecified((extra & SPECIFIED) != 0);
isIdAttribute((extra & ID) != 0);
int extraNode = ownerDocument.getLastChild(fNodeIndex);
type = ownerDocument.getTypeInfo(extraNode);
} // synchronizeData()
Synchronizes the node's children with the internal structure.
Fluffing the children at once solves a lot of work to keep
the two structures in sync. The problem gets worse when
editing the tree -- this makes it a lot easier.
/**
* Synchronizes the node's children with the internal structure.
* Fluffing the children at once solves a lot of work to keep
* the two structures in sync. The problem gets worse when
* editing the tree -- this makes it a lot easier.
*/
protected void synchronizeChildren() {
DeferredDocumentImpl ownerDocument =
(DeferredDocumentImpl) ownerDocument();
ownerDocument.synchronizeChildren(this, fNodeIndex);
} // synchronizeChildren()
} // class DeferredAttrImpl