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 */ 018 package org.apache.hadoop.lib.wsrs; 019 020 import org.apache.hadoop.classification.InterfaceAudience; 021 022 import java.util.Map; 023 024 /** 025 * Class that contains all parsed JAX-RS parameters. 026 * <p/> 027 * Instances are created by the {@link ParametersProvider} class. 028 */ 029 @InterfaceAudience.Private 030 public class Parameters { 031 private Map<String, Param<?>> params; 032 033 /** 034 * Constructor that receives the request parsed parameters. 035 * 036 * @param params the request parsed parameters. 037 */ 038 public Parameters(Map<String, Param<?>> params) { 039 this.params = params; 040 } 041 042 /** 043 * Returns the value of a request parsed parameter. 044 * 045 * @param name parameter name. 046 * @param klass class of the parameter, used for value casting. 047 * @return the value of the parameter. 048 */ 049 @SuppressWarnings("unchecked") 050 public <V, T extends Param<V>> V get(String name, Class<T> klass) { 051 return ((T)params.get(name)).value(); 052 } 053 054 }