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Ajax4jsf is an open source extension to the JavaServer Faces standard that adds AJAX capability to JSF applications without requiring the writing of any JavaScript.
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/*
* Copyright 1999-2004 The Apache Software Foundation.
*
* Licensed 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.
*/
/*
* $Id: AttList.java,v 1.2 2006/06/14 09:16:50 alexsmirnov Exp $
*/
package org.ajax4jsf.xml.serializer.utils;
import org.w3c.dom.Attr;
import org.w3c.dom.NamedNodeMap;
import org.w3c.dom.Node;
import org.xml.sax.Attributes;
/**
* Wraps a DOM attribute list in a SAX Attributes.
*
* This class is a copy of the one in org.apache.xml.utils.
* It exists to cut the serializers dependancy on that package.
* A minor changes from that package are:
* DOMHelper reference changed to DOM2Helper, class is not "public"
*
* This class is not a public API, it is only public because it is
* used in org.ajax4jsf.xml.serializer.
*
* @xsl.usage internal
*/
public final class AttList implements Attributes
{
/** List of attribute nodes */
NamedNodeMap m_attrs;
/** Index of last attribute node */
int m_lastIndex;
// ARGHH!! JAXP Uses Xerces without setting the namespace processing to ON!
// DOM2Helper m_dh = new DOM2Helper();
/** Local reference to DOMHelper */
DOM2Helper m_dh;
// /**
// * Constructor AttList
// *
// *
// * @param attrs List of attributes this will contain
// */
// public AttList(NamedNodeMap attrs)
// {
//
// m_attrs = attrs;
// m_lastIndex = m_attrs.getLength() - 1;
// m_dh = new DOM2Helper();
// }
/**
* Constructor AttList
*
*
* @param attrs List of attributes this will contain
* @param dh DOMHelper
*/
public AttList(NamedNodeMap attrs, DOM2Helper dh)
{
m_attrs = attrs;
m_lastIndex = m_attrs.getLength() - 1;
m_dh = dh;
}
/**
* Get the number of attribute nodes in the list
*
*
* @return number of attribute nodes
*/
public int getLength()
{
return m_attrs.getLength();
}
/**
* Look up an attribute's Namespace URI by index.
*
* @param index The attribute index (zero-based).
* @return The Namespace URI, or the empty string if none
* is available, or null if the index is out of
* range.
*/
public String getURI(int index)
{
String ns = m_dh.getNamespaceOfNode(((Attr) m_attrs.item(index)));
if(null == ns)
ns = "";
return ns;
}
/**
* Look up an attribute's local name by index.
*
* @param index The attribute index (zero-based).
* @return The local name, or the empty string if Namespace
* processing is not being performed, or null
* if the index is out of range.
*/
public String getLocalName(int index)
{
return m_dh.getLocalNameOfNode(((Attr) m_attrs.item(index)));
}
/**
* Look up an attribute's qualified name by index.
*
*
* @param i The attribute index (zero-based).
*
* @return The attribute's qualified name
*/
public String getQName(int i)
{
return ((Attr) m_attrs.item(i)).getName();
}
/**
* Get the attribute's node type by index
*
*
* @param i The attribute index (zero-based)
*
* @return the attribute's node type
*/
public String getType(int i)
{
return "CDATA"; // for the moment
}
/**
* Get the attribute's node value by index
*
*
* @param i The attribute index (zero-based)
*
* @return the attribute's node value
*/
public String getValue(int i)
{
return ((Attr) m_attrs.item(i)).getValue();
}
/**
* Get the attribute's node type by name
*
*
* @param name Attribute name
*
* @return the attribute's node type
*/
public String getType(String name)
{
return "CDATA"; // for the moment
}
/**
* Look up an attribute's type by Namespace name.
*
* @param uri The Namespace URI, or the empty String if the
* name has no Namespace URI.
* @param localName The local name of the attribute.
* @return The attribute type as a string, or null if the
* attribute is not in the list or if Namespace
* processing is not being performed.
*/
public String getType(String uri, String localName)
{
return "CDATA"; // for the moment
}
/**
* Look up an attribute's value by name.
*
*
* @param name The attribute node's name
*
* @return The attribute node's value
*/
public String getValue(String name)
{
Attr attr = ((Attr) m_attrs.getNamedItem(name));
return (null != attr)
? attr.getValue() : null;
}
/**
* Look up an attribute's value by Namespace name.
*
* @param uri The Namespace URI, or the empty String if the
* name has no Namespace URI.
* @param localName The local name of the attribute.
* @return The attribute value as a string, or null if the
* attribute is not in the list.
*/
public String getValue(String uri, String localName)
{
Node a=m_attrs.getNamedItemNS(uri,localName);
return (a==null) ? null : a.getNodeValue();
}
/**
* Look up the index of an attribute by Namespace name.
*
* @param uri The Namespace URI, or the empty string if
* the name has no Namespace URI.
* @param localPart The attribute's local name.
* @return The index of the attribute, or -1 if it does not
* appear in the list.
*/
public int getIndex(String uri, String localPart)
{
for(int i=m_attrs.getLength()-1;i>=0;--i)
{
Node a=m_attrs.item(i);
String u=a.getNamespaceURI();
if( (u==null ? uri==null : u.equals(uri))
&&
a.getLocalName().equals(localPart) )
return i;
}
return -1;
}
/**
* Look up the index of an attribute by raw XML 1.0 name.
*
* @param qName The qualified (prefixed) name.
* @return The index of the attribute, or -1 if it does not
* appear in the list.
*/
public int getIndex(String qName)
{
for(int i=m_attrs.getLength()-1;i>=0;--i)
{
Node a=m_attrs.item(i);
if(a.getNodeName().equals(qName) )
return i;
}
return -1;
}
}