001/*
002 * Licensed to the Apache Software Foundation (ASF) under one or more
003 * contributor license agreements.  See the NOTICE file distributed with
004 * this work for additional information regarding copyright ownership.
005 * The ASF licenses this file to You under the Apache License, Version 2.0
006 * (the "License"); you may not use this file except in compliance with
007 * the License.  You may obtain a copy of the License at
008 *
009 *      http://www.apache.org/licenses/LICENSE-2.0
010 *
011 * Unless required by applicable law or agreed to in writing, software
012 * distributed under the License is distributed on an "AS IS" BASIS,
013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014 * See the License for the specific language governing permissions and
015 * limitations under the License.
016 */
017package org.apache.wicket.util;
018
019import java.util.function.Supplier;
020
021/**
022 * Provider that always provides the specified value.
023 * 
024 * @author igor.vaynberg
025 * @param <T>
026 *            type of value this provider provides
027 */
028public class ValueProvider<T> implements Supplier<T>
029{
030        private final T value;
031
032        /**
033         * Construct.
034         * 
035         * @param value
036         *            value to provide
037         */
038        public ValueProvider(final T value)
039        {
040                this.value = value;
041        }
042
043        @Override
044        public T get()
045        {
046                return value;
047        }
048
049        /**
050         * Creates a provider for the specified value
051         * 
052         * @param <T>
053         *            type of value
054         * @param value
055         *            value
056         * @return provider
057         */
058        public static <T> ValueProvider<T> of(final T value)
059        {
060                return new ValueProvider<>(value);
061        }
062}