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/*
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* reserved comment block
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* DO NOT REMOVE OR ALTER!
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*/
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/*
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* Copyright 1999-2002,2004,2005 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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import java.io.IOException;
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import java.io.ObjectInputStream;
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import java.io.ObjectOutputStream;
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import java.io.Serializable;
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import java.util.ArrayList;
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import java.util.List;
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import java.util.Vector;
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import org.w3c.dom.DOMException;
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import org.w3c.dom.NamedNodeMap;
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import org.w3c.dom.Node;
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/**
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* NamedNodeMaps represent collections of Nodes that can be accessed
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* by name. Entity and Notation nodes are stored in NamedNodeMaps
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* attached to the DocumentType. Attributes are placed in a NamedNodeMap
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* attached to the elem they're related too. However, because attributes
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* require more work, such as firing mutation events, they are stored in
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* a subclass of NamedNodeMapImpl.
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* <P>
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* Only one Node may be stored per name; attempting to
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* store another will replace the previous value.
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* <P>
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* NOTE: The "primary" storage key is taken from the NodeName attribute of the
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* node. The "secondary" storage key is the namespaceURI and localName, when
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* accessed by DOM level 2 nodes. All nodes, even DOM Level 2 nodes are stored
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* in a single Vector sorted by the primary "nodename" key.
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* <P>
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* NOTE: item()'s integer index does _not_ imply that the named nodes
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* must be stored in an array; that's only an access method. Note too
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* that these indices are "live"; if someone changes the map's
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* contents, the indices associated with nodes may change.
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* <P>
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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 NamedNodeMapImpl
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implements NamedNodeMap, Serializable {
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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 = -7039242451046758020L;
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//
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// Data
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//
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protected short flags;
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protected final static short READONLY = 0x1<<0;
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protected final static short CHANGED = 0x1<<1;
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protected final static short HASDEFAULTS = 0x1<<2;
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/** Nodes. */
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protected List nodes;
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protected NodeImpl ownerNode; // the node this map belongs to
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//
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// Constructors
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//
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/** Constructs a named node map. */
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protected NamedNodeMapImpl(NodeImpl ownerNode) {
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this.ownerNode = ownerNode;
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}
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//
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// NamedNodeMap methods
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//
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/**
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* Report how many nodes are currently stored in this NamedNodeMap.
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* Caveat: This is a count rather than an index, so the
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* highest-numbered node at any time can be accessed via
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* item(getLength()-1).
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*/
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public int getLength() {
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return (nodes != null) ? nodes.size() : 0;
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}
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/**
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* Retrieve an item from the map by 0-based index.
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*
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* @param index Which item to retrieve. Note that indices are just an
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* enumeration of the current contents; they aren't guaranteed to be
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* stable, nor do they imply any promises about the order of the
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* NamedNodeMap's contents. In other words, DO NOT assume either that
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* index(i) will always refer to the same entry, or that there is any
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* stable ordering of entries... and be prepared for double-reporting
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* or skips as insertion and deletion occur.
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*
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* @return the node which currenly has the specified index, or null if index
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* is greater than or equal to getLength().
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*/
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public Node item(int index) {
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return (nodes != null && index < nodes.size()) ?
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(Node)(nodes.get(index)) : null;
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}
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/**
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* Retrieve a node by name.
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*
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* @param name Name of a node to look up.
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* @return the Node (of unspecified sub-class) stored with that name, or
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* null if no value has been assigned to that name.
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*/
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public Node getNamedItem(String name) {
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int i = findNamePoint(name,0);
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return (i < 0) ? null : (Node)(nodes.get(i));
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} // getNamedItem(String):Node
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/**
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* Introduced in DOM Level 2. <p>
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* Retrieves a node specified by local name and namespace URI.
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*
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* @param namespaceURI The namespace URI of the node to retrieve.
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* When it is null or an empty string, this
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* method behaves like getNamedItem.
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* @param localName The local name of the node to retrieve.
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* @return Node A Node (of any type) with the specified name, or null if the specified
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* name did not identify any node in the map.
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*/
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public Node getNamedItemNS(String namespaceURI, String localName) {
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int i = findNamePoint(namespaceURI, localName);
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return (i < 0) ? null : (Node)(nodes.get(i));
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} // getNamedItemNS(String,String):Node
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/**
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* Adds a node using its nodeName attribute.
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* As the nodeName attribute is used to derive the name which the node must be
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* stored under, multiple nodes of certain types (those that have a "special" string
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* value) cannot be stored as the names would clash. This is seen as preferable to
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* allowing nodes to be aliased.
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* @see org.w3c.dom.NamedNodeMap#setNamedItem
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* @return If the new Node replaces an existing node the replaced Node is returned,
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* otherwise null is returned.
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* @param arg
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* A node to store in a named node map. The node will later be
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* accessible using the value of the namespaceURI and localName
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* attribute of the node. If a node with those namespace URI and
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* local name is already present in the map, it is replaced by the new
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* one.
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* @exception org.w3c.dom.DOMException The exception description.
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*/
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public Node setNamedItem(Node arg)
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throws DOMException {
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CoreDocumentImpl ownerDocument = ownerNode.ownerDocument();
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if (ownerDocument.errorChecking) {
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if (isReadOnly()) {
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String msg = DOMMessageFormatter.formatMessage(DOMMessageFormatter.DOM_DOMAIN, "NO_MODIFICATION_ALLOWED_ERR", null);
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throw new DOMException(DOMException.NO_MODIFICATION_ALLOWED_ERR, msg);
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}
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if (arg.getOwnerDocument() != ownerDocument) {
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String msg = DOMMessageFormatter.formatMessage(DOMMessageFormatter.DOM_DOMAIN, "WRONG_DOCUMENT_ERR", null);
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throw new DOMException(DOMException.WRONG_DOCUMENT_ERR, msg);
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}
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}
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int i = findNamePoint(arg.getNodeName(),0);
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NodeImpl previous = null;
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if (i >= 0) {
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previous = (NodeImpl) nodes.get(i);
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nodes.set(i, arg);
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} else {
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i = -1 - i; // Insert point (may be end of list)
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if (null == nodes) {
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nodes = new ArrayList(5);
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}
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nodes.add(i, arg);
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}
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return previous;
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} // setNamedItem(Node):Node
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/**
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* Adds a node using its namespaceURI and localName.
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* @see org.w3c.dom.NamedNodeMap#setNamedItem
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* @return If the new Node replaces an existing node the replaced Node is returned,
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* otherwise null is returned.
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* @param arg A node to store in a named node map. The node will later be
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* accessible using the value of the namespaceURI and localName
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* attribute of the node. If a node with those namespace URI and
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* local name is already present in the map, it is replaced by the new
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* one.
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*/
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public Node setNamedItemNS(Node arg)
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throws DOMException {
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CoreDocumentImpl ownerDocument = ownerNode.ownerDocument();
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if (ownerDocument.errorChecking) {
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if (isReadOnly()) {
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String msg = DOMMessageFormatter.formatMessage(DOMMessageFormatter.DOM_DOMAIN, "NO_MODIFICATION_ALLOWED_ERR", null);
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throw new DOMException(DOMException.NO_MODIFICATION_ALLOWED_ERR, msg);
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}
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if(arg.getOwnerDocument() != ownerDocument) {
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String msg = DOMMessageFormatter.formatMessage(DOMMessageFormatter.DOM_DOMAIN, "WRONG_DOCUMENT_ERR", null);
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throw new DOMException(DOMException.WRONG_DOCUMENT_ERR, msg);
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}
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}
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int i = findNamePoint(arg.getNamespaceURI(), arg.getLocalName());
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NodeImpl previous = null;
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if (i >= 0) {
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previous = (NodeImpl) nodes.get(i);
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nodes.set(i, arg);
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} else {
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// If we can't find by namespaceURI, localName, then we find by
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// nodeName so we know where to insert.
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i = findNamePoint(arg.getNodeName(),0);
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if (i >= 0) {
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previous = (NodeImpl) nodes.get(i);
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nodes.add(i, arg);
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} else {
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i = -1 - i; // Insert point (may be end of list)
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if (null == nodes) {
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nodes = new ArrayList(5);
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}
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nodes.add(i, arg);
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}
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}
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return previous;
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} // setNamedItemNS(Node):Node
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/**
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* Removes a node specified by name.
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* @param name The name of a node to remove.
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* @return The node removed from the map if a node with such a name exists.
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*/
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/***/
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public Node removeNamedItem(String name)
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throws DOMException {
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if (isReadOnly()) {
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String msg = DOMMessageFormatter.formatMessage(DOMMessageFormatter.DOM_DOMAIN, "NO_MODIFICATION_ALLOWED_ERR", null);
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throw
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new DOMException(DOMException.NO_MODIFICATION_ALLOWED_ERR,
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msg);
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}
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int i = findNamePoint(name,0);
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if (i < 0) {
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String msg = DOMMessageFormatter.formatMessage(DOMMessageFormatter.DOM_DOMAIN, "NOT_FOUND_ERR", null);
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throw new DOMException(DOMException.NOT_FOUND_ERR, msg);
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}
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NodeImpl n = (NodeImpl)nodes.get(i);
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nodes.remove(i);
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return n;
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} // removeNamedItem(String):Node
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/**
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* Introduced in DOM Level 2. <p>
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* Removes a node specified by local name and namespace URI.
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* @param namespaceURI
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* The namespace URI of the node to remove.
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* When it is null or an empty string, this
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* method behaves like removeNamedItem.
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* @param name The local name of the node to remove.
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* @return Node The node removed from the map if a node with such
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* a local name and namespace URI exists.
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* @throws NOT_FOUND_ERR: Raised if there is no node named
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* name in the map.
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*/
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public Node removeNamedItemNS(String namespaceURI, String name)
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throws DOMException {
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if (isReadOnly()) {
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String msg = DOMMessageFormatter.formatMessage(DOMMessageFormatter.DOM_DOMAIN, "NO_MODIFICATION_ALLOWED_ERR", null);
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throw
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new DOMException(DOMException.NO_MODIFICATION_ALLOWED_ERR,
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msg);
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}
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int i = findNamePoint(namespaceURI, name);
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if (i < 0) {
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String msg = DOMMessageFormatter.formatMessage(DOMMessageFormatter.DOM_DOMAIN, "NOT_FOUND_ERR", null);
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throw new DOMException(DOMException.NOT_FOUND_ERR, msg);
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}
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NodeImpl n = (NodeImpl)nodes.get(i);
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nodes.remove(i);
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return n;
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} // removeNamedItem(String):Node
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//
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// Public methods
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//
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/**
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* Cloning a NamedNodeMap is a DEEP OPERATION; it always clones
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* all the nodes contained in the map.
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*/
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public NamedNodeMapImpl cloneMap(NodeImpl ownerNode) {
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NamedNodeMapImpl newmap = new NamedNodeMapImpl(ownerNode);
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newmap.cloneContent(this);
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return newmap;
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}
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protected void cloneContent(NamedNodeMapImpl srcmap) {
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List srcnodes = srcmap.nodes;
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if (srcnodes != null) {
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int size = srcnodes.size();
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if (size != 0) {
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if (nodes == null) {
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nodes = new ArrayList(size);
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}
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else {
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nodes.clear();
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}
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for (int i = 0; i < size; ++i) {
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NodeImpl n = (NodeImpl) srcmap.nodes.get(i);
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NodeImpl clone = (NodeImpl) n.cloneNode(true);
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clone.isSpecified(n.isSpecified());
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nodes.add(clone);
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}
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}
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}
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} // cloneMap():NamedNodeMapImpl
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//
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// Package methods
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//
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/**
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* Internal subroutine to allow read-only Nodes to make their contained
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* NamedNodeMaps readonly too. I expect that in fact the shallow
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* version of this operation will never be
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*
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* @param readOnly boolean true to make read-only, false to permit editing.
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* @param deep boolean true to pass this request along to the contained
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* nodes, false to only toggle the NamedNodeMap itself. I expect that
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* the shallow version of this operation will never be used, but I want
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* to design it in now, while I'm thinking about it.
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*/
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void setReadOnly(boolean readOnly, boolean deep) {
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isReadOnly(readOnly);
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if (deep && nodes != null) {
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for (int i = nodes.size() - 1; i >= 0; i--) {
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((NodeImpl) nodes.get(i)).setReadOnly(readOnly,deep);
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}
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}
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} // setReadOnly(boolean,boolean)
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/**
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* Internal subroutine returns this NodeNameMap's (shallow) readOnly value.
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*
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*/
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boolean getReadOnly() {
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return isReadOnly();
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} // getReadOnly()
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//
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// Protected methods
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//
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/**
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* NON-DOM
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* set the ownerDocument of this node, and the attributes it contains
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*/
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protected void setOwnerDocument(CoreDocumentImpl doc) {
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if (nodes != null) {
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final int size = nodes.size();
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for (int i = 0; i < size; ++i) {
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((NodeImpl)item(i)).setOwnerDocument(doc);
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}
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}
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}
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final boolean isReadOnly() {
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return (flags & READONLY) != 0;
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}
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final void isReadOnly(boolean value) {
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flags = (short) (value ? flags | READONLY : flags & ~READONLY);
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}
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final boolean changed() {
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418 |
return (flags & CHANGED) != 0;
|
|
419 |
}
|
|
420 |
|
|
421 |
final void changed(boolean value) {
|
|
422 |
flags = (short) (value ? flags | CHANGED : flags & ~CHANGED);
|
|
423 |
}
|
|
424 |
|
|
425 |
final boolean hasDefaults() {
|
|
426 |
return (flags & HASDEFAULTS) != 0;
|
|
427 |
}
|
|
428 |
|
|
429 |
final void hasDefaults(boolean value) {
|
|
430 |
flags = (short) (value ? flags | HASDEFAULTS : flags & ~HASDEFAULTS);
|
|
431 |
}
|
|
432 |
|
|
433 |
//
|
|
434 |
// Private methods
|
|
435 |
//
|
|
436 |
|
|
437 |
/**
|
|
438 |
* Subroutine: Locate the named item, or the point at which said item
|
|
439 |
* should be added.
|
|
440 |
*
|
|
441 |
* @param name Name of a node to look up.
|
|
442 |
*
|
|
443 |
* @return If positive or zero, the index of the found item.
|
|
444 |
* If negative, index of the appropriate point at which to insert
|
|
445 |
* the item, encoded as -1-index and hence reconvertable by subtracting
|
|
446 |
* it from -1. (Encoding because I don't want to recompare the strings
|
|
447 |
* but don't want to burn bytes on a datatype to hold a flagged value.)
|
|
448 |
*/
|
|
449 |
protected int findNamePoint(String name, int start) {
|
|
450 |
|
|
451 |
// Binary search
|
|
452 |
int i = 0;
|
|
453 |
if (nodes != null) {
|
|
454 |
int first = start;
|
|
455 |
int last = nodes.size() - 1;
|
|
456 |
|
|
457 |
while (first <= last) {
|
|
458 |
i = (first + last) / 2;
|
|
459 |
int test = name.compareTo(((Node)(nodes.get(i))).getNodeName());
|
|
460 |
if (test == 0) {
|
|
461 |
return i; // Name found
|
|
462 |
}
|
|
463 |
else if (test < 0) {
|
|
464 |
last = i - 1;
|
|
465 |
}
|
|
466 |
else {
|
|
467 |
first = i + 1;
|
|
468 |
}
|
|
469 |
}
|
|
470 |
|
|
471 |
if (first > i) {
|
|
472 |
i = first;
|
|
473 |
}
|
|
474 |
}
|
|
475 |
|
|
476 |
return -1 - i; // not-found has to be encoded.
|
|
477 |
|
|
478 |
} // findNamePoint(String):int
|
|
479 |
|
|
480 |
|
|
481 |
/** This findNamePoint is for DOM Level 2 Namespaces.
|
|
482 |
*/
|
|
483 |
protected int findNamePoint(String namespaceURI, String name) {
|
|
484 |
|
|
485 |
if (nodes == null) return -1;
|
|
486 |
if (name == null) return -1;
|
|
487 |
|
|
488 |
// This is a linear search through the same nodes ArrayList.
|
|
489 |
// The ArrayList is sorted on the DOM Level 1 nodename.
|
|
490 |
// The DOM Level 2 NS keys are namespaceURI and Localname,
|
|
491 |
// so we must linear search thru it.
|
|
492 |
// In addition, to get this to work with nodes without any namespace
|
|
493 |
// (namespaceURI and localNames are both null) we then use the nodeName
|
|
494 |
// as a secondary key.
|
|
495 |
final int size = nodes.size();
|
|
496 |
for (int i = 0; i < size; ++i) {
|
|
497 |
NodeImpl a = (NodeImpl)nodes.get(i);
|
|
498 |
String aNamespaceURI = a.getNamespaceURI();
|
|
499 |
String aLocalName = a.getLocalName();
|
|
500 |
if (namespaceURI == null) {
|
|
501 |
if (aNamespaceURI == null
|
|
502 |
&&
|
|
503 |
(name.equals(aLocalName)
|
|
504 |
||
|
|
505 |
(aLocalName == null && name.equals(a.getNodeName()))))
|
|
506 |
return i;
|
|
507 |
} else {
|
|
508 |
if (namespaceURI.equals(aNamespaceURI)
|
|
509 |
&&
|
|
510 |
name.equals(aLocalName))
|
|
511 |
return i;
|
|
512 |
}
|
|
513 |
}
|
|
514 |
return -1;
|
|
515 |
}
|
|
516 |
|
|
517 |
// compare 2 nodes in the map. If a precedes b, return true, otherwise
|
|
518 |
// return false
|
|
519 |
protected boolean precedes(Node a, Node b) {
|
|
520 |
|
|
521 |
if (nodes != null) {
|
|
522 |
final int size = nodes.size();
|
|
523 |
for (int i = 0; i < size; ++i) {
|
|
524 |
Node n = (Node)nodes.get(i);
|
|
525 |
if (n==a) return true;
|
|
526 |
if (n==b) return false;
|
|
527 |
}
|
|
528 |
}
|
|
529 |
return false;
|
|
530 |
}
|
|
531 |
|
|
532 |
|
|
533 |
/**
|
|
534 |
* NON-DOM: Remove attribute at specified index
|
|
535 |
*/
|
|
536 |
protected void removeItem(int index) {
|
|
537 |
if (nodes != null && index < nodes.size()){
|
|
538 |
nodes.remove(index);
|
|
539 |
}
|
|
540 |
}
|
|
541 |
|
|
542 |
|
|
543 |
protected Object getItem (int index){
|
|
544 |
if (nodes != null) {
|
|
545 |
return nodes.get(index);
|
|
546 |
}
|
|
547 |
return null;
|
|
548 |
}
|
|
549 |
|
|
550 |
protected int addItem (Node arg) {
|
|
551 |
int i = findNamePoint(arg.getNamespaceURI(), arg.getLocalName());
|
|
552 |
if (i >= 0) {
|
|
553 |
nodes.set(i, arg);
|
|
554 |
}
|
|
555 |
else {
|
|
556 |
// If we can't find by namespaceURI, localName, then we find by
|
|
557 |
// nodeName so we know where to insert.
|
|
558 |
i = findNamePoint(arg.getNodeName(),0);
|
|
559 |
if (i >= 0) {
|
|
560 |
nodes.add(i, arg);
|
|
561 |
}
|
|
562 |
else {
|
|
563 |
i = -1 - i; // Insert point (may be end of list)
|
|
564 |
if (null == nodes) {
|
|
565 |
nodes = new ArrayList(5);
|
|
566 |
}
|
|
567 |
nodes.add(i, arg);
|
|
568 |
}
|
|
569 |
}
|
|
570 |
return i;
|
|
571 |
}
|
|
572 |
|
|
573 |
/**
|
|
574 |
* NON-DOM: copy content of this map into the specified ArrayList
|
|
575 |
*
|
|
576 |
* @param list ArrayList to copy information into.
|
|
577 |
* @return A copy of this node named map
|
|
578 |
*/
|
|
579 |
protected ArrayList cloneMap(ArrayList list) {
|
|
580 |
if (list == null) {
|
|
581 |
list = new ArrayList(5);
|
|
582 |
}
|
|
583 |
list.clear();
|
|
584 |
if (nodes != null) {
|
|
585 |
final int size = nodes.size();
|
|
586 |
for (int i = 0; i < size; ++i) {
|
|
587 |
list.add(nodes.get(i));
|
|
588 |
}
|
|
589 |
}
|
|
590 |
return list;
|
|
591 |
}
|
|
592 |
|
|
593 |
protected int getNamedItemIndex(String namespaceURI, String localName) {
|
|
594 |
return findNamePoint(namespaceURI, localName);
|
|
595 |
}
|
|
596 |
|
|
597 |
/**
|
|
598 |
* NON-DOM remove all elements from this map
|
|
599 |
*/
|
|
600 |
public void removeAll (){
|
|
601 |
if (nodes != null) {
|
|
602 |
nodes.clear();
|
|
603 |
}
|
|
604 |
}
|
|
605 |
|
|
606 |
private void readObject(ObjectInputStream in)
|
|
607 |
throws IOException, ClassNotFoundException {
|
|
608 |
in.defaultReadObject();
|
|
609 |
if (nodes != null) {
|
|
610 |
nodes = new ArrayList(nodes);
|
|
611 |
}
|
|
612 |
}
|
|
613 |
|
|
614 |
private void writeObject(ObjectOutputStream out) throws IOException {
|
|
615 |
List oldNodes = this.nodes;
|
|
616 |
try {
|
|
617 |
if (oldNodes != null) {
|
|
618 |
this.nodes = new Vector(oldNodes);
|
|
619 |
}
|
|
620 |
out.defaultWriteObject();
|
|
621 |
}
|
|
622 |
// If the write fails for some reason ensure
|
|
623 |
// that we restore the original object.
|
|
624 |
finally {
|
|
625 |
this.nodes = oldNodes;
|
|
626 |
}
|
|
627 |
}
|
|
628 |
|
|
629 |
} // class NamedNodeMapImpl
|