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/*
 * Copyright (c) 2001-2013 Oracle and/or its affiliates. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 *   - Redistributions of source code must retain the above copyright
 *     notice, this list of conditions and the following disclaimer.
 *
 *   - Redistributions in binary form must reproduce the above copyright
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 *     documentation and/or other materials provided with the distribution.
 *
 *   - Neither the name of Oracle nor the names of its
 *     contributors may be used to endorse or promote products derived
 *     from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
 * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR
 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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 */

package com.sun.msv.grammar.relax;

import com.sun.msv.grammar.ElementExp;
import com.sun.msv.grammar.Expression;
import com.sun.msv.grammar.ExpressionPool;
import com.sun.msv.grammar.NameClass;

/**
 * ElementRule declaration of RELAX.
 * 
 * @author Kohsuke KAWAGUCHI
 */
public class ElementRule extends ElementExp {
    
    /** constraints over start tag of the element */
    public final TagClause clause;
    
    /** Attribute-free content model */
    public final Expression attributeFreeContentModel;
    
    protected ElementRules parent;

    /** gets the parent ElementRules object.
     * 
     * when this object is used as a named, no-inline elementRule,
     * this variable holds a reference to the parent ElementRules object.
     * otherwise, null
     */
    public ElementRules getParent() { return parent; }
    
    public final NameClass getNameClass()    { return clause.nameClass; }
    
    public ElementRule( ExpressionPool pool, TagClause clause, Expression contentModel ) {
        super( pool.createSequence(clause,contentModel), true );
        this.clause = clause;
        this.attributeFreeContentModel = contentModel;
    }
    
    // serialization support
    private static final long serialVersionUID = 1;    
}