/*
 * @(#)$Id: IncludeGrammarState.java,v 1.4 2002/03/04 02:15:48 kk122374 Exp $
 *
 * Copyright 2001 Sun Microsystems, Inc. All Rights Reserved.
 * 
 * This software is the proprietary information of Sun Microsystems, Inc.  
 * Use is subject to license terms.
 * 
 */
package com.sun.msv.relaxns.reader;

import com.sun.msv.reader.AbortException;
import com.sun.msv.reader.ChildlessState;

/**
 * parses <include> element of RELAX Namespace.
 * 
 * @author <a href="mailto:kohsuke.kawaguchi@eng.sun.com">Kohsuke KAWAGUCHI</a>
 */
public class IncludeGrammarState extends ChildlessState
{
	protected void startSelf()
	{
		super.startSelf();
	
		final String href = startTag.getAttribute("grammarLocation");

		if(href==null) {
            // name attribute is required.
			reader.reportError( reader.ERR_MISSING_ATTRIBUTE,
				"include","grammarLocation");
			// recover by ignoring this include element
		} else
            try {
    			reader.switchSource(this,href,new RootGrammarMergeState());
            } catch( AbortException e ) {
    			// recover by ignoring this include element
            }
	}
}