/*
 * Copyright (c) 2005, 2010, Thai Open Source Software Center Ltd
 * 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
 *     notice, this list of conditions and the following disclaimer in
 *     the documentation and/or other materials provided with the
 *     distribution.
 *
 *     Neither the name of the Thai Open Source Software Center Ltd 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 REGENTS OR
 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

package com.sun.tools.rngdatatype.helpers;

import com.sun.tools.rngdatatype.Datatype;
import com.sun.tools.rngdatatype.DatatypeBuilder;
import com.sun.tools.rngdatatype.DatatypeException;
import com.sun.tools.rngdatatype.ValidationContext;

/**
 * Dummy implementation of {@link DatatypeBuilder}.
 * 
 * This implementation can be used for Datatypes which have no parameters.
 * Any attempt to add parameters will be rejected.
 * 
 * <p>
 * Typical usage would be:
 * <PRE>
 * class MyDatatypeLibrary implements DatatypeLibrary {
 *     ....
 *     DatatypeBuilder createDatatypeBuilder( String typeName ) {
 *         return new ParameterleessDatatypeBuilder(createDatatype(typeName));
 *     }
 *     ....
 * }
 * </PRE>
 * 
 * @author <a href="mailto:kohsuke.kawaguchi@sun.com">Kohsuke KAWAGUCHI</a>
 */
public final class ParameterlessDatatypeBuilder implements DatatypeBuilder {

	/** This type object is returned for the derive method. */
	private final Datatype baseType;
	
	public ParameterlessDatatypeBuilder( Datatype baseType ) {
		this.baseType = baseType;
	}
	
	public void addParameter( String name, String strValue, ValidationContext context )
			throws DatatypeException {
		throw new DatatypeException();
	}
	
	public Datatype createDatatype() throws DatatypeException {
		return baseType;
	}
}
