/*
 * @(#)$Id: XSREDocDecl.java,v 1.3 2001/10/19 23:30:47 Bear 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.verifier.regexp.xmlschema;

import com.sun.msv.grammar.Expression;
import com.sun.msv.grammar.AttributeExp;
import com.sun.msv.grammar.NamespaceNameClass;
import com.sun.msv.grammar.xmlschema.XMLSchemaGrammar;
import com.sun.msv.verifier.Acceptor;
import com.sun.msv.verifier.regexp.AttributeFeeder;
import com.sun.msv.verifier.regexp.CombinedChildContentExpCreator;
import com.sun.msv.verifier.regexp.REDocumentDeclaration;
import com.sun.msv.verifier.identity.IDConstraintChecker;
import com.sun.msv.util.StartTagInfo;
import org.xml.sax.helpers.AttributesImpl;

/**
 * {@link REDocumentDeclaration} that supports several W3C XML Schema
 * specific semantics.
 * 
 * <p>
 * If you do validation by using W3C XML Schema, then you should use
 * this VGM instead of plain <code>REDocumentDeclaration</code>.
 * You should also use {@link IDConstraintChecker} instead of Verifier class.
 * 
 * <p>
 * This package implements the following things:
 * <ol>
 *  <li>the xsi:nil attribute support.
 *  <li>the runtime type substitution by the xsi:type attribute
 * </ol>
 */
public class XSREDocDecl extends REDocumentDeclaration {

	public XSREDocDecl( XMLSchemaGrammar grammar ) {
		super(grammar);
		this.grammar = grammar;
	}

	public Acceptor createAcceptor() {
		// use XSAcceptor instead
		return new XSAcceptor(this, topLevel, null, Expression.epsilon);
	}

	CombinedChildContentExpCreator getCCCEC() { return super.cccec; }
	AttributeFeeder getAttFeeder() { return super.attFeeder; }
	
	/**
	 * the grammar which this VGM is using.
	 * 
	 * For one, this object is used to find the complex type definition
	 * by its name.
	 */
	final protected XMLSchemaGrammar grammar;
	
	/**
	 * AttributeExp that matches to "xsi:***" attributes.
	 */
	final protected AttributeExp xsiAttExp =
		new AttributeExp(
			new NamespaceNameClass(XSAcceptor.XSINamespace),
			Expression.anyString);
	
	public String localizeMessage( String propertyName, Object[] args ) {
		try {
			String format = java.util.ResourceBundle.getBundle(
				"com.sun.msv.verifier.regexp.xmlschema.Messages").getString(propertyName);
		
			return java.text.MessageFormat.format(format, args );
		} catch( Exception e ) {
			return super.localizeMessage(propertyName,args);
		}
	}
	
	public static final String ERR_NON_NILLABLE_ELEMENT = // arg:1
		"XMLSchemaVerifier.NonNillableElement";
	public static final String ERR_NOT_SUBSTITUTABLE_TYPE = // arg:1
		"XMLSchemaVerifier.NotSubstitutableType";
	public static final String ERR_UNDEFINED_TYPE = // arg:1
		"XMLSchemaVerifier.UndefinedType";

}