iciql/src/com/iciql/bytecode/Null.java

/*
 * Copyright 2004-2011 H2 Group.
 * Copyright 2011 James Moger.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.iciql.bytecode;

import com.iciql.Query;
import com.iciql.SQLStatement;
import com.iciql.Token;

/**
 * The Java 'null'.
 */
public class Null implements Token {

	static final Null INSTANCE = new Null();

	private Null() {
		// don't allow to create new instances
	}

	public String toString() {
		return "null";
	}

	public <T> void appendSQL(SQLStatement stat, Query<T> query) {
		// untested
		stat.appendSQL("NULL");
	}

}