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JAXB (JSR 222) reference implementation - JAXB1 build

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/*
 * @(#)$Id: IncludeMergeState.java,v 1.11 2003/06/09 20:37:28 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.reader.trex;

import com.sun.msv.reader.AbortException;
import com.sun.msv.reader.SimpleState;
import com.sun.msv.reader.State;
import com.sun.msv.util.StartTagInfo;

/**
 * <include> element as an immediate child of <grammar> element.
 * 
 * @author Kohsuke KAWAGUCHI
 */
public class IncludeMergeState extends SimpleState {
    
    protected State createChildState( StartTagInfo tag ) {
        // no child element is allowed by default.
        return null;
    }
    
    protected void endSelf() {
        // For RELAX NG, inclusion has to be done at the endSelf method,
        // not in the startSelf method.
        final String href = startTag.getAttribute("href");

        if(href==null)
        {// name attribute is required.
            reader.reportError( TREXBaseReader.ERR_MISSING_ATTRIBUTE,
                "include","href");
            // recover by ignoring this include element
        }
        else
            try {
                // parse specified file
                reader.switchSource(this,href,new RootMergedGrammarState());
            } catch( AbortException e ) {
                // recover by ignoring the error
            }
        
        super.endSelf();
    }
}