org.dom4j.dom.DOMElement Maven / Gradle / Ivy
/*
* Copyright 2001-2005 (C) MetaStuff, Ltd. All Rights Reserved.
*
* This software is open source.
* See the bottom of this file for the licence.
*/
package org.dom4j.dom;
import java.util.ArrayList;
import java.util.List;
import org.dom4j.Attribute;
import org.dom4j.DocumentFactory;
import org.dom4j.Namespace;
import org.dom4j.QName;
import org.dom4j.tree.DefaultElement;
import org.w3c.dom.DOMException;
import org.w3c.dom.Document;
import org.w3c.dom.NamedNodeMap;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
/**
*
* DOMElement implements an XML element which supports the W3C
* DOM API.
*
*
* @author James Strachan
* @version $Revision: 1.23 $
*/
public class DOMElement extends DefaultElement implements org.w3c.dom.Element {
/** The DocumentFactory instance used by default */
private static final DocumentFactory DOCUMENT_FACTORY = DOMDocumentFactory
.getInstance();
public DOMElement(String name) {
super(name);
}
public DOMElement(QName qname) {
super(qname);
}
public DOMElement(QName qname, int attributeCount) {
super(qname, attributeCount);
}
public DOMElement(String name, Namespace namespace) {
super(name, namespace);
}
// org.w3c.dom.Node interface
// -------------------------------------------------------------------------
public boolean supports(String feature, String version) {
return DOMNodeHelper.supports(this, feature, version);
}
public String getNamespaceURI() {
return getQName().getNamespaceURI();
}
public String getPrefix() {
return getQName().getNamespacePrefix();
}
public void setPrefix(String prefix) throws DOMException {
DOMNodeHelper.setPrefix(this, prefix);
}
public String getLocalName() {
return getQName().getName();
}
public String getNodeName() {
return getName();
}
// already part of API
//
// public short getNodeType();
public String getNodeValue() throws DOMException {
return null;
}
public void setNodeValue(String nodeValue) throws DOMException {
}
public org.w3c.dom.Node getParentNode() {
return DOMNodeHelper.getParentNode(this);
}
public NodeList getChildNodes() {
return DOMNodeHelper.createNodeList(content());
}
public org.w3c.dom.Node getFirstChild() {
return DOMNodeHelper.asDOMNode(node(0));
}
public org.w3c.dom.Node getLastChild() {
return DOMNodeHelper.asDOMNode(node(nodeCount() - 1));
}
public org.w3c.dom.Node getPreviousSibling() {
return DOMNodeHelper.getPreviousSibling(this);
}
public org.w3c.dom.Node getNextSibling() {
return DOMNodeHelper.getNextSibling(this);
}
public NamedNodeMap getAttributes() {
return new DOMAttributeNodeMap(this);
}
public Document getOwnerDocument() {
return DOMNodeHelper.getOwnerDocument(this);
}
public org.w3c.dom.Node insertBefore(org.w3c.dom.Node newChild,
org.w3c.dom.Node refChild) throws DOMException {
checkNewChildNode(newChild);
return DOMNodeHelper.insertBefore(this, newChild, refChild);
}
public org.w3c.dom.Node replaceChild(org.w3c.dom.Node newChild,
org.w3c.dom.Node oldChild) throws DOMException {
checkNewChildNode(newChild);
return DOMNodeHelper.replaceChild(this, newChild, oldChild);
}
public org.w3c.dom.Node removeChild(org.w3c.dom.Node oldChild)
throws DOMException {
return DOMNodeHelper.removeChild(this, oldChild);
}
public org.w3c.dom.Node appendChild(org.w3c.dom.Node newChild)
throws DOMException {
checkNewChildNode(newChild);
return DOMNodeHelper.appendChild(this, newChild);
}
private void checkNewChildNode(org.w3c.dom.Node newChild)
throws DOMException {
final int nodeType = newChild.getNodeType();
if (!((nodeType == Node.ELEMENT_NODE) || (nodeType == Node.TEXT_NODE)
|| (nodeType == Node.COMMENT_NODE)
|| (nodeType == Node.PROCESSING_INSTRUCTION_NODE)
|| (nodeType == Node.CDATA_SECTION_NODE)
|| (nodeType == Node.ENTITY_REFERENCE_NODE))) {
throw new DOMException(DOMException.HIERARCHY_REQUEST_ERR,
"Given node cannot be a child of element");
}
}
public boolean hasChildNodes() {
return nodeCount() > 0;
}
public org.w3c.dom.Node cloneNode(boolean deep) {
return DOMNodeHelper.cloneNode(this, deep);
}
public boolean isSupported(String feature, String version) {
return DOMNodeHelper.isSupported(this, feature, version);
}
public boolean hasAttributes() {
return DOMNodeHelper.hasAttributes(this);
}
// org.w3c.dom.Element interface
// -------------------------------------------------------------------------
public String getTagName() {
return getName();
}
public String getAttribute(String name) {
String answer = attributeValue(name);
return (answer != null) ? answer : "";
}
public void setAttribute(String name, String value) throws DOMException {
addAttribute(name, value);
}
public void removeAttribute(String name) throws DOMException {
Attribute attribute = attribute(name);
if (attribute != null) {
remove(attribute);
}
}
public org.w3c.dom.Attr getAttributeNode(String name) {
return DOMNodeHelper.asDOMAttr(attribute(name));
}
public org.w3c.dom.Attr setAttributeNode(org.w3c.dom.Attr newAttr)
throws DOMException {
if (this.isReadOnly()) {
throw new DOMException(DOMException.NO_MODIFICATION_ALLOWED_ERR,
"No modification allowed");
}
Attribute attribute = attribute(newAttr);
if (attribute != newAttr) {
if (newAttr.getOwnerElement() != null) {
throw new DOMException(DOMException.INUSE_ATTRIBUTE_ERR,
"Attribute is already in use");
}
Attribute newAttribute = createAttribute(newAttr);
if (attribute != null) {
attribute.detach();
}
add(newAttribute);
}
return DOMNodeHelper.asDOMAttr(attribute);
}
public org.w3c.dom.Attr removeAttributeNode(org.w3c.dom.Attr oldAttr)
throws DOMException {
Attribute attribute = attribute(oldAttr);
if (attribute != null) {
attribute.detach();
return DOMNodeHelper.asDOMAttr(attribute);
} else {
throw new DOMException(DOMException.NOT_FOUND_ERR,
"No such attribute");
}
}
public String getAttributeNS(String namespaceURI, String localName) {
Attribute attribute = attribute(namespaceURI, localName);
if (attribute != null) {
String answer = attribute.getValue();
if (answer != null) {
return answer;
}
}
return "";
}
public void setAttributeNS(String namespaceURI, String qualifiedName,
String value) throws DOMException {
Attribute attribute = attribute(namespaceURI, qualifiedName);
if (attribute != null) {
attribute.setValue(value);
} else {
QName qname = getQName(namespaceURI, qualifiedName);
addAttribute(qname, value);
}
}
public void removeAttributeNS(String namespaceURI, String localName)
throws DOMException {
Attribute attribute = attribute(namespaceURI, localName);
if (attribute != null) {
remove(attribute);
}
}
public org.w3c.dom.Attr getAttributeNodeNS(String namespaceURI,
String localName) {
Attribute attribute = attribute(namespaceURI, localName);
if (attribute != null) {
DOMNodeHelper.asDOMAttr(attribute);
}
return null;
}
public org.w3c.dom.Attr setAttributeNodeNS(org.w3c.dom.Attr newAttr)
throws DOMException {
Attribute attribute = attribute(newAttr.getNamespaceURI(), newAttr
.getLocalName());
if (attribute != null) {
attribute.setValue(newAttr.getValue());
} else {
attribute = createAttribute(newAttr);
add(attribute);
}
return DOMNodeHelper.asDOMAttr(attribute);
}
public NodeList getElementsByTagName(String name) {
ArrayList list = new ArrayList();
DOMNodeHelper.appendElementsByTagName(list, this, name);
return DOMNodeHelper.createNodeList(list);
}
public NodeList getElementsByTagNameNS(String namespace, String lName) {
ArrayList list = new ArrayList();
DOMNodeHelper.appendElementsByTagNameNS(list, this, namespace, lName);
return DOMNodeHelper.createNodeList(list);
}
public boolean hasAttribute(String name) {
return attribute(name) != null;
}
public boolean hasAttributeNS(String namespaceURI, String localName) {
return attribute(namespaceURI, localName) != null;
}
// Implementation methods
// -------------------------------------------------------------------------
protected DocumentFactory getDocumentFactory() {
DocumentFactory factory = getQName().getDocumentFactory();
return (factory != null) ? factory : DOCUMENT_FACTORY;
}
protected Attribute attribute(org.w3c.dom.Attr attr) {
return attribute(DOCUMENT_FACTORY.createQName(attr.getLocalName(), attr
.getPrefix(), attr.getNamespaceURI()));
}
protected Attribute attribute(String namespaceURI, String localName) {
List attributes = attributeList();
int size = attributes.size();
for (int i = 0; i < size; i++) {
Attribute attribute = (Attribute) attributes.get(i);
if (localName.equals(attribute.getName())
&& (((namespaceURI == null || namespaceURI.length() == 0)
&& ((attribute.getNamespaceURI() == null)
|| (attribute.getNamespaceURI().length() == 0)))
|| ((namespaceURI != null) && namespaceURI
.equals(attribute.getNamespaceURI())))) {
return attribute;
}
}
return null;
}
protected Attribute createAttribute(org.w3c.dom.Attr newAttr) {
QName qname = null;
String name = newAttr.getLocalName();
if (name != null) {
String prefix = newAttr.getPrefix();
String uri = newAttr.getNamespaceURI();
qname = getDocumentFactory().createQName(name, prefix, uri);
} else {
name = newAttr.getName();
qname = getDocumentFactory().createQName(name);
}
return new DOMAttribute(qname, newAttr.getValue());
}
protected QName getQName(String namespace, String qualifiedName) {
int index = qualifiedName.indexOf(':');
String prefix = "";
String localName = qualifiedName;
if (index >= 0) {
prefix = qualifiedName.substring(0, index);
localName = qualifiedName.substring(index + 1);
}
return getDocumentFactory().createQName(localName, prefix, namespace);
}
}
/*
* Redistribution and use of this software and associated documentation
* ("Software"), with or without modification, are permitted provided that the
* following conditions are met:
*
* 1. Redistributions of source code must retain copyright statements and
* notices. Redistributions must also contain a copy of this document.
*
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* 3. The name "DOM4J" must not be used to endorse or promote products derived
* from this Software without prior written permission of MetaStuff, Ltd. For
* written permission, please contact [email protected].
*
* 4. Products derived from this Software may not be called "DOM4J" nor may
* "DOM4J" appear in their names without prior written permission of MetaStuff,
* Ltd. DOM4J is a registered trademark of MetaStuff, Ltd.
*
* 5. Due credit should be given to the DOM4J Project - http://www.dom4j.org
*
* THIS SOFTWARE IS PROVIDED BY METASTUFF, LTD. AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL METASTUFF, LTD. OR ITS CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
* Copyright 2001-2005 (C) MetaStuff, Ltd. All Rights Reserved.
*/
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