wicket-util/src/main/java/org/apache/wicket/util/NullProvider.java

/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You 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 org.apache.wicket.util;

/**
 * Provider that provides {@code null}s. Convenient to have to avoid a double {@code null} check for
 * the provider and its provided instance.
 * 
 * @author igor.vaynberg
 * @param <T>
 */
public class NullProvider<T> implements IProvider<T>
{
	@Override
	public T get()
	{
		return null;
	}
}