Create.java example

Explorer
eXist-1.4.x-master
/*
 *  eXist Open Source Native XML Database
 *  Copyright (C) 2001-09 Wolfgang M. Meier
 *  wolfgang@exist-db.org
 *  http://exist.sourceforge.net
 *  
 *  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.xquery.functions.session;

import org.apache.log4j.Logger;
import org.exist.dom.QName;
import org.exist.xquery.BasicFunction;
import org.exist.xquery.Cardinality;
import org.exist.xquery.FunctionSignature;
import org.exist.xquery.XPathException;
import org.exist.xquery.XQueryContext;
import org.exist.xquery.functions.request.RequestModule;
import org.exist.xquery.value.Sequence;
import org.exist.xquery.value.SequenceType;
import org.exist.xquery.value.Type;

/**
 * @author Wolfgang Meier (wolfgang@exist-db.org)
 * @author Loren Cahlander
 */
public class Create extends BasicFunction 
{
	private static final Logger logger = Logger.getLogger(Create.class);
	
	public final static FunctionSignature signature =
		new FunctionSignature(
			new QName( "create", SessionModule.NAMESPACE_URI, SessionModule.PREFIX ),
			"Initialize an HTTP session if not already present",
			null,
			new SequenceType( Type.ITEM, Cardinality.EMPTY ) );

	public final static FunctionSignature deprecated =
		new FunctionSignature(
			new QName( "create-session", RequestModule.NAMESPACE_URI, RequestModule.PREFIX ),
			"Initialize an HTTP session if not already present",
			null,
			new SequenceType( Type.ITEM, Cardinality.EMPTY ),
			"Moved to the 'session' module. See session:create."
		);
	
	/**
	 * @param context
	 */
	public Create( XQueryContext context )
	{
		super( context, signature );
	}

	/* (non-Javadoc)
	 * @see org.exist.xquery.BasicFunction#eval(org.exist.xquery.value.Sequence[], org.exist.xquery.value.Sequence)
	 */
	public Sequence eval( Sequence[] args, Sequence contextSequence ) throws XPathException 
	{
		SessionModule.createSession( context, this );
		
		return( Sequence.EMPTY_SEQUENCE );
	}
	
}