/*
 * @(#)$Id: EntityType.java,v 1.21 2002/10/08 22:01:27 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.datatype.xsd;

import org.relaxng.datatype.ValidationContext;
import com.sun.msv.datatype.SerializationContext;

/**
 * "ENTITY" type.
 * 
 * type of the value object is <code>java.lang.String</code>.
 * See http://www.w3.org/TR/xmlschema-2/#ENTITY for the spec
 * 
 * @author <a href="mailto:kohsuke.kawaguchi@eng.sun.com">Kohsuke KAWAGUCHI</a>
 */
public class EntityType extends BuiltinAtomicType {
	public static final EntityType theInstance = new EntityType();
	private EntityType() { super("ENTITY"); }
	
	final public XSDatatype getBaseType() {
		return NcnameType.theInstance;
	}

	/**
	 * ENTITY type always returns true. That is, ENTITY is a context-dependent type.
	 */
	public boolean isContextDependent() {
		return true;
	}
	
	public final int isFacetApplicable( String facetName ) {
		if( facetName.equals(FACET_LENGTH)
		||	facetName.equals(FACET_MINLENGTH)
		||	facetName.equals(FACET_MAXLENGTH)
		||	facetName.equals(FACET_PATTERN)
        ||  facetName.equals(FACET_WHITESPACE)
		||	facetName.equals(FACET_ENUMERATION) )
			return APPLICABLE;
		else
			return NOT_ALLOWED;
	}
	
	protected boolean checkFormat( String content, ValidationContext context ) {
		return context.isUnparsedEntity(content);
	}

	public Object _createValue( String content, ValidationContext context ) {
		if(context.isUnparsedEntity(content))	return content;
		else									return null;
	}
	public Class getJavaObjectType() {
		return String.class;
	}

	public String convertToLexicalValue( Object value, SerializationContext context ) {
		if( value instanceof String )
			return (String)value;
		else
			throw new IllegalArgumentException();
	}
}