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NamespaceNode.java
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NamespaceNode.java
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/*
* eXist Open Source Native XML Database
* Copyright (C) 2001-04 Wolfgang M. Meier
* wolfgang@exist-db.org
* http://exist-db.org
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*
* $Id$
*/
package org.exist.memtree;
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 org.exist.Namespaces;
import org.exist.dom.QName;
import org.exist.dom.QNameable;
import org.exist.xquery.NodeTest;
import org.exist.xquery.XPathException;
import org.exist.xquery.value.Sequence;
import org.exist.xquery.value.Type;
/**
* A dynamically constructed namespace node. Used to track namespace declarations in elements. Implements Attr, so it can be treated as a normal
* attribute.
*
* @author wolf
*/
public class NamespaceNode extends NodeImpl implements Attr, QNameable
{
/**
* Creates a new NamespaceNode object.
*
* @param doc
* @param nodeNumber
*/
public NamespaceNode( DocumentImpl doc, int nodeNumber )
{
super( doc, nodeNumber );
}
/* (non-Javadoc)
* @see org.exist.memtree.NodeImpl#getNodeType()
*/
public short getNodeType()
{
//TOUNDERSTAND : return value
//XQuery doesn't support namespace nodes
//so, mapping as an attribute at *serialization tile* makes sense
//however, the Query parser should not accept them in constructors !
return( NodeImpl.NAMESPACE_NODE);
}
/* (non-Javadoc)
* @see org.exist.memtree.NodeImpl#getType()
*/
public int getType()
{
return( Type.NAMESPACE );
}
public String getPrefix()
{
return( getQName().getPrefix() );
}
public String getNamespaceURI()
{
return( Namespaces.XMLNS_NS );
}
public boolean getSpecified()
{
return( true );
}
public QName getQName()
{
return( document.namespaceCode[nodeNumber] );
}
/* (non-Javadoc)
* @see org.w3c.dom.Node#getLocalName()
*/
public String getLocalName()
{
return( getQName().getLocalName() );
}
/* (non-Javadoc)
* @see org.w3c.dom.Node#getNodeName()
*/
public String getNodeName()
{
return( getQName().getStringValue() );
}
public String getName()
{
return( getQName().getStringValue() );
}
/* (non-Javadoc)
* @see org.w3c.dom.Attr#getValue()
*/
public String getValue()
{
return( getQName().getNamespaceURI() );
}
/* (non-Javadoc)
* @see org.w3c.dom.Attr#setValue(java.lang.String)
*/
public void setValue( String value ) throws DOMException
{
}
@Override
public Node getFirstChild() {
return null;
}
@Override
public Node getLastChild() {
return null;
}
public String getNodeValue() throws DOMException
{
return( getQName().getNamespaceURI() );
}
/* (non-Javadoc)
* @see org.w3c.dom.Attr#getOwnerElement()
*/
public Element getOwnerElement()
{
return( (Element)document.getNode( document.namespaceParent[nodeNumber] ) );
}
/**
* ? @see org.w3c.dom.Attr#getSchemaTypeInfo()
*
* @return DOCUMENT ME!
*/
public TypeInfo getSchemaTypeInfo()
{
// maybe _TODO_ - new DOM interfaces - Java 5.0
return( null );
}
/**
* ? @see org.w3c.dom.Attr#isId()
*
* @return DOCUMENT ME!
*/
public boolean isId()
{
// maybe _TODO_ - new DOM interfaces - Java 5.0
return( false );
}
public int getItemType()
{
return( Type.NAMESPACE );
}
//Untested
public String toString()
{
final StringBuilder result = new StringBuilder();
result.append( "in-memory#" );
result.append( "namespace {" );
result.append( getPrefix() );
result.append( "}" );
result.append( "{" );
result.append( getValue() );
result.append( "} " );
return( result.toString() );
}
@Override
public void selectAttributes(NodeTest test, Sequence result)
throws XPathException {
// TODO Auto-generated method stub
}
@Override
public void selectChildren(NodeTest test, Sequence result)
throws XPathException {
// TODO Auto-generated method stub
}
@Override
public void selectDescendantAttributes(NodeTest test, Sequence result)
throws XPathException {
// TODO Auto-generated method stub
}
}