/*
* 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.commons.jxpath.ri.model.dom;
import org.apache.commons.jxpath.ri.Compiler;
import org.apache.commons.jxpath.ri.QName;
import org.apache.commons.jxpath.ri.compiler.NodeTest;
import org.apache.commons.jxpath.ri.compiler.NodeTypeTest;
import org.apache.commons.jxpath.ri.model.NodePointer;
import org.apache.commons.jxpath.util.TypeUtils;
import org.w3c.dom.Attr;
/**
* A Pointer that points to a DOM node. Because the underlying DOM Attr is not Serializable,
* neither is this pointer class truly so.
*
* @author Dmitri Plotnikov
* @version $Revision: 670727 $ $Date: 2008-06-23 15:10:38 -0500 (Mon, 23 Jun 2008) $
*/
public class DOMAttributePointer extends NodePointer {
private static final long serialVersionUID = 1115085175427555951L;
private Attr attr;
/**
* Create a new DOMAttributePointer.
* @param parent pointer
* @param attr pointed
*/
public DOMAttributePointer(NodePointer parent, Attr attr) {
super(parent);
this.attr = attr;
}
public QName getName() {
return new QName(
DOMNodePointer.getPrefix(attr),
DOMNodePointer.getLocalName(attr));
}
public String getNamespaceURI() {
String prefix = DOMNodePointer.getPrefix(attr);
return prefix == null ? null : parent.getNamespaceURI(prefix);
}
public Object getValue() {
String value = attr.getValue();
if (value == null || (value.equals("") && !attr.getSpecified())) {
return null;
}
return value;
}
public Object getBaseValue() {
return attr;
}
public boolean isCollection() {
return false;
}
public int getLength() {
return 1;
}
public Object getImmediateNode() {
return attr;
}
public boolean isActual() {
return true;
}
public boolean isLeaf() {
return true;
}
public boolean testNode(NodeTest nodeTest) {
return nodeTest == null
|| ((nodeTest instanceof NodeTypeTest)
&& ((NodeTypeTest) nodeTest).getNodeType() == Compiler.NODE_TYPE_NODE);
}
/**
* Sets the value of this attribute.
* @param value to set
*/
public void setValue(Object value) {
attr.setValue((String) TypeUtils.convert(value, String.class));
}
public void remove() {
attr.getOwnerElement().removeAttributeNode(attr);
}
public String asPath() {
StringBuffer buffer = new StringBuffer();
if (parent != null) {
buffer.append(parent.asPath());
if (buffer.length() == 0
|| buffer.charAt(buffer.length() - 1) != '/') {
buffer.append('/');
}
}
buffer.append('@');
buffer.append(getName());
return buffer.toString();
}
public int hashCode() {
return System.identityHashCode(attr);
}
public boolean equals(Object object) {
return object == this || object instanceof DOMAttributePointer
&& attr == ((DOMAttributePointer) object).attr;
}
public int compareChildNodePointers(NodePointer pointer1,
NodePointer pointer2) {
// Won't happen - attributes don't have children
return 0;
}
}
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