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/*
* 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.axiom.om.impl.dom;
import org.apache.axiom.om.OMAttribute;
import org.apache.axiom.om.OMConstants;
import org.apache.axiom.om.OMContainer;
import org.apache.axiom.om.OMException;
import org.apache.axiom.om.OMFactory;
import org.apache.axiom.om.OMNamespace;
import org.apache.axiom.om.OMNode;
import org.w3c.dom.Attr;
import org.w3c.dom.DOMException;
import org.w3c.dom.Element;
import org.w3c.dom.Node;
import org.w3c.dom.TypeInfo;
import javax.xml.namespace.QName;
import javax.xml.stream.XMLStreamException;
import javax.xml.stream.XMLStreamWriter;
/** Implementation of org.w3c.dom.Attr and org.apache.axiom.om.OMAttribute */
public class AttrImpl extends NodeImpl implements OMAttribute, Attr {
/** Name of the attribute */
private String attrName;
/** Attribute value */
private TextImpl attrValue;
/** Attribute namespace */
private NamespaceImpl namespace;
/** Flag to indicate whether this attr is used or not */
private boolean used;
/** Owner of this attribute */
protected ParentNode parent;
/** Flag used to mark an attribute as per the DOM Level 3 specification */
protected boolean isId;
protected AttrImpl(DocumentImpl ownerDocument, OMFactory factory) {
super(ownerDocument, factory);
}
public AttrImpl(DocumentImpl ownerDocument, String localName,
OMNamespace ns, String value, OMFactory factory) {
super(ownerDocument, factory);
this.attrName = localName;
this.attrValue = new TextImpl(ownerDocument, value, factory);
this.namespace = (NamespaceImpl) ns;
}
public AttrImpl(DocumentImpl ownerDocument, String name, String value,
OMFactory factory) {
super(ownerDocument, factory);
this.attrName = name;
this.attrValue = new TextImpl(ownerDocument, value, factory);
}
public AttrImpl(DocumentImpl ownerDocument, String name, OMFactory factory) {
super(ownerDocument, factory);
this.attrName = name;
//If this is a default namespace attr
if (OMConstants.XMLNS_NS_PREFIX.equals(name)) {
this.namespace = new NamespaceImpl(
OMConstants.XMLNS_NS_URI, OMConstants.XMLNS_NS_PREFIX);
}
}
public AttrImpl(DocumentImpl ownerDocument, String localName,
OMNamespace namespace, OMFactory factory) {
super(ownerDocument, factory);
this.attrName = localName;
this.namespace = (NamespaceImpl) namespace;
}
// /
// /org.w3c.dom.Node methods
// /
/** Returns the name of this attribute. */
public String getNodeName() {
return (this.namespace != null
&& !"".equals(this.namespace.getPrefix()) &&
!(OMConstants.XMLNS_NS_PREFIX.equals(this.attrName)))
? this.namespace.getPrefix() + ":" + this.attrName
: this.attrName;
}
/**
* Returns the node type.
*
* @see org.w3c.dom.Node#getNodeType()
*/
public short getNodeType() {
return Node.ATTRIBUTE_NODE;
}
/**
* Returns the value of this attribute.
*
* @see org.w3c.dom.Node#getNodeValue()
*/
public String getNodeValue() throws DOMException {
return (this.attrValue == null) ? "" : this.attrValue.getData();
}
/**
* Returns the value of this attribute.
*
* @see org.w3c.dom.Attr#getValue()
*/
public String getValue() {
return (this.attrValue == null) ? null : this.attrValue.getText();
}
// /
// /org.w3c.dom.Attr methods
// /
public String getName() {
if (this.namespace != null) {
if ((OMConstants.XMLNS_NS_PREFIX.equals(this.attrName))) {
return this.attrName;
} else if (OMConstants.XMLNS_NS_URI.equals(this.namespace.getNamespaceURI())) {
return OMConstants.XMLNS_NS_PREFIX + ":" + this.attrName;
} else if (this.namespace.getPrefix().equals("")) {
return this.attrName;
} else {
return this.namespace.getPrefix() + ":" + this.attrName;
}
} else {
return this.attrName;
}
}
/**
* Returns the owner element.
*
* @see org.w3c.dom.Attr#getOwnerElement()
*/
public Element getOwnerElement() {
// Owned is set to an element instance when the attribute is added to an
// element
return (Element) (isOwned() ? parent : null);
}
public boolean getSpecified() {
// TODO
throw new UnsupportedOperationException("TODO");
}
/**
* Not supported: Cannot detach attributes. Use the operations available in the owner node.
*
* @see org.apache.axiom.om.OMNode#detach()
*/
public OMNode detach() throws OMException {
throw new UnsupportedOperationException("Not supported");
}
/**
* Not supported: Cannot discard attributes. Use the operations available in the owner node.
*
* @see org.apache.axiom.om.OMNode#discard()
*/
public void discard() throws OMException {
throw new UnsupportedOperationException("Not supported");
}
/**
* Returns the type of this attribute node.
*
* @see org.apache.axiom.om.OMNode#getType()
*/
public int getType() {
return -1;
}
/**
* This is not supported since attributes serialization is handled by the serialization of the
* owner nodes.
*/
public void internalSerialize(XMLStreamWriter writer) throws XMLStreamException {
throw new UnsupportedOperationException("Not supported");
}
/**
* This is not supported since attributes serialization is handled by the serialization of the
* owner nodes.
*
* @see org.apache.axiom.om.impl.OMNodeEx#internalSerializeAndConsume
* (org.apache.axiom.om.impl.MTOMXMLStreamWriter)
*/
public void internalSerializeAndConsume(XMLStreamWriter writer)
throws XMLStreamException {
throw new UnsupportedOperationException("Not supported");
}
/**
* Returns the namespace of the attribute as an OMNamespace.
*
* @see org.apache.axiom.om.OMAttribute#getNamespace()
*/
public OMNamespace getNamespace() {
return this.namespace;
}
/**
* Returns a qname representing the attribute.
*
* @see org.apache.axiom.om.OMAttribute#getQName()
*/
public QName getQName() {
return (namespace == null) ?
new QName(this.attrName) :
// This next bit is because QName is kind of stupid, and throws an
// IllegalArgumentException on null prefix instead of treating it exactly
// as if no prefix had been passed. Grr.
(namespace.getPrefix() == null ?
new QName(namespace.getNamespaceURI(), attrName) :
new QName(namespace.getNamespaceURI(),
attrName,
namespace.getPrefix()));
}
/**
* Returns the attribute value.
*
* @see org.apache.axiom.om.OMAttribute#getAttributeValue()
*/
public String getAttributeValue() {
return this.attrValue.getText();
}
/**
* Sets the name of attribute.
*
* @see org.apache.axiom.om.OMAttribute#setLocalName(String)
*/
public void setLocalName(String localName) {
this.attrName = localName;
}
/**
* Sets the namespace of this attribute node.
*
* @see org.apache.axiom.om.OMAttribute#setOMNamespace (org.apache.axiom.om.OMNamespace)
*/
public void setOMNamespace(OMNamespace omNamespace) {
this.namespace = (NamespaceImpl) omNamespace;
}
/**
* Sets the attribute value.
*
* @see org.apache.axiom.om.OMAttribute#setAttributeValue(String)
*/
public void setAttributeValue(String value) {
if (isReadonly()) {
String msg = DOMMessageFormatter.formatMessage(
DOMMessageFormatter.DOM_DOMAIN,
"NO_MODIFICATION_ALLOWED_ERR", null);
throw new DOMException(DOMException.NO_MODIFICATION_ALLOWED_ERR,
msg);
}
this.attrValue = (TextImpl) this.getOwnerDocument().createTextNode(
value);
}
/**
* Sets the parent element to the given OMContainer.
*
* @see org.apache.axiom.om.impl.OMNodeEx#setParent (org.apache.axiom.om.OMContainer)
*/
public void setParent(OMContainer element) {
this.parent = (ParentNode) element;
}
/**
* Sets the type. NOT IMPLEMENTED: Unnecessary.
*
* @see org.apache.axiom.om.impl.OMNodeEx#setType(int)
*/
public void setType(int nodeType) throws OMException {
// not necessary ???
}
/** @return Returns boolean. */
protected boolean isUsed() {
return used;
}
/** @param used The used to set. */
protected void setUsed(boolean used) {
this.used = used;
}
/**
* Sets the value of the attribute.
*
* @see org.w3c.dom.Attr#setValue(String)
*/
public void setValue(String value) throws DOMException {
this.attrValue = (TextImpl) this.getOwnerDocument().createTextNode(
value);
}
/**
* Returns the parent node of this attribute.
*
* @see org.apache.axiom.om.OMNode#getParent()
*/
public OMContainer getParent() {
return this.parent;
}
/**
* Returns the attribute name.
*
* @see org.w3c.dom.Node#getLocalName()
*/
public String getLocalName() {
return (this.namespace == null) ? this.attrName : DOMUtil
.getLocalName(this.attrName);
}
/**
* Returns the namespace URI of this attr node.
*
* @see org.w3c.dom.Node#getNamespaceURI()
*/
public String getNamespaceURI() {
if (this.namespace != null) {
return namespace.getNamespaceURI();
}
return null;
}
/**
* Returns the namespace prefix of this attr node.
*
* @see org.w3c.dom.Node#getPrefix()
*/
public String getPrefix() {
// TODO Error checking
return (this.namespace == null) ? null : this.namespace.getPrefix();
}
public Node cloneNode(boolean deep) {
AttrImpl clone = (AttrImpl) super.cloneNode(deep);
if (clone.attrValue == null) {
// Need to break the association w/ original kids
clone.attrValue = new TextImpl(this.attrValue.toString(), factory);
if (this.attrValue.nextSibling != null) {
throw new UnsupportedOperationException(
"Attribute value can contain only a text " +
"node with out any siblings");
}
}
clone.isSpecified(true);
return clone;
}
/*
* DOM-Level 3 methods
*/
public TypeInfo getSchemaTypeInfo() {
// TODO TODO
throw new UnsupportedOperationException("TODO");
}
public boolean isId() {
return isId;
}
public String toString() {
return (this.namespace == null) ? this.attrName : this.namespace
.getPrefix()
+ ":" + this.attrName;
}
}
