001/*
002 * Licensed to the Apache Software Foundation (ASF) under one
003 * or more contributor license agreements.  See the NOTICE file
004 * distributed with this work for additional information
005 * regarding copyright ownership.  The ASF licenses this file
006 * to you under the Apache License, Version 2.0 (the
007 * "License"); you may not use this file except in compliance
008 * with the License.  You may obtain a copy of the License at
009 *
010 *     http://www.apache.org/licenses/LICENSE-2.0
011 *
012 * Unless required by applicable law or agreed to in writing, software
013 * distributed under the License is distributed on an "AS IS" BASIS,
014 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
015 * See the License for the specific language governing permissions and
016 * limitations under the License.
017 */
018package org.apache.hadoop.hbase.http.jersey;
019
020import java.util.function.Supplier;
021import org.apache.yetus.audience.InterfaceAudience;
022
023import org.apache.hbase.thirdparty.org.glassfish.hk2.api.Factory;
024
025/**
026 * Use a {@link Supplier} of type {@code T} as a {@link Factory} that provides instances of
027 * {@code T}. Modeled after Jersey's internal implementation.
028 */
029@InterfaceAudience.Private
030public class SupplierFactoryAdapter<T> implements Factory<T> {
031
032  private final Supplier<T> supplier;
033
034  public SupplierFactoryAdapter(Supplier<T> supplier) {
035    this.supplier = supplier;
036  }
037
038  @Override
039  public T provide() {
040    return supplier.get();
041  }
042
043  @Override
044  public void dispose(T instance) {
045  }
046}