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154 lines
4.8 KiB
154 lines
4.8 KiB
/*
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* Copyright (c) 2007, 2018, Oracle and/or its affiliates. All rights reserved.
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* ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
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*/
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/*
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* Copyright 1999-2002,2004 The Apache Software Foundation.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.sun.org.apache.xerces.internal.dom;
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/**
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* Entity nodes hold the reference data for an XML Entity -- either
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* parsed or unparsed. The nodeName (inherited from Node) will contain
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* the name (if any) of the Entity. Its data will be contained in the
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* Entity's children, in exactly the structure which an
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* EntityReference to this name will present within the document's
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* body.
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* <P>
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* Note that this object models the actual entity, _not_ the entity
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* declaration or the entity reference.
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* <P>
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* An XML processor may choose to completely expand entities before
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* the structure model is passed to the DOM; in this case, there will
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* be no EntityReferences in the DOM tree.
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* <P>
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* Quoting the 10/01 DOM Proposal,
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* <BLOCKQUOTE>
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* "The DOM Level 1 does not support editing Entity nodes; if a user
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* wants to make changes to the contents of an Entity, every related
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* EntityReference node has to be replaced in the structure model by
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* a clone of the Entity's contents, and then the desired changes
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* must be made to each of those clones instead. All the
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* descendants of an Entity node are readonly."
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* </BLOCKQUOTE>
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* I'm interpreting this as: It is the parser's responsibilty to call
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* the non-DOM operation setReadOnly(true,true) after it constructs
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* the Entity. Since the DOM explicitly decided not to deal with this,
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* _any_ answer will involve a non-DOM operation, and this is the
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* simplest solution.
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*
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* @xerces.internal
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*
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* @since PR-DOM-Level-1-19980818.
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*/
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public class DeferredEntityImpl
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extends EntityImpl
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implements DeferredNode {
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//
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// Constants
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//
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/** Serialization version. */
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static final long serialVersionUID = 4760180431078941638L;
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//
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// Data
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//
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/** Node index. */
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protected transient int fNodeIndex;
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//
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// Constructors
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//
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/**
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* This is the deferred constructor. Only the fNodeIndex is given here.
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* All other data, can be requested from the ownerDocument via the index.
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*/
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DeferredEntityImpl(DeferredDocumentImpl ownerDocument, int nodeIndex) {
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super(ownerDocument, null);
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fNodeIndex = nodeIndex;
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needsSyncData(true);
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needsSyncChildren(true);
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} // <init>(DeferredDocumentImpl,int)
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//
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// DeferredNode methods
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//
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/** Returns the node index. */
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public int getNodeIndex() {
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return fNodeIndex;
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}
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//
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// Protected methods
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//
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/**
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* Synchronize the entity data. This is special because of the way
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* that the "fast" version stores the information.
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*/
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protected void synchronizeData() {
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// no need to sychronize again
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needsSyncData(false);
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// get the node data
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DeferredDocumentImpl ownerDocument =
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(DeferredDocumentImpl)this.ownerDocument;
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name = ownerDocument.getNodeName(fNodeIndex);
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// get the entity data
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publicId = ownerDocument.getNodeValue(fNodeIndex);
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systemId = ownerDocument.getNodeURI(fNodeIndex);
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int extraDataIndex = ownerDocument.getNodeExtra(fNodeIndex);
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ownerDocument.getNodeType(extraDataIndex);
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notationName = ownerDocument.getNodeName(extraDataIndex);
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// encoding and version DOM L3
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version = ownerDocument.getNodeValue(extraDataIndex);
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encoding = ownerDocument.getNodeURI(extraDataIndex);
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// baseURI, actualEncoding DOM L3
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int extraIndex2 = ownerDocument.getNodeExtra(extraDataIndex);
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baseURI = ownerDocument.getNodeName(extraIndex2);
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inputEncoding = ownerDocument.getNodeValue(extraIndex2);
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} // synchronizeData()
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/** Synchronize the children. */
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protected void synchronizeChildren() {
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// no need to synchronize again
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needsSyncChildren(false);
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isReadOnly(false);
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DeferredDocumentImpl ownerDocument =
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(DeferredDocumentImpl) ownerDocument();
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ownerDocument.synchronizeChildren(this, fNodeIndex);
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setReadOnly(true, true);
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} // synchronizeChildren()
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} // class DeferredEntityImpl
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