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.juneau.rest.server.arg;
018
019import org.apache.juneau.commons.function.*;
020import org.apache.juneau.commons.reflect.*;
021import org.apache.juneau.rest.server.*;
022import org.apache.juneau.rest.server.util.*;
023
024/**
025 * Resolves method parameters on {@link RestOp}-annotated Java methods of types found on the {@link RestSession} object.
026 *
027 * <ul class='javatree'>
028 *    <li class='jc'>{@link RestSession}
029 *    <li class='jc'>{@link UrlPath}
030 *    <li class='jc'>{@link UrlPathMatch}
031 * </ul>
032 *
033 * <h5 class='section'>See Also:</h5><ul>
034 *    <li class='link'><a class="doclink" href="https://juneau.apache.org/docs/topics/JavaMethodParameters">Java Method Parameters</a>
035 * </ul>
036 */
037public class RestSessionArgs extends SimpleRestOperationArg {
038
039   /**
040    * Static creator.
041    *
042    * @param paramInfo The Java method parameter being resolved. Must not be <jk>null</jk>.
043    * @return A new arg, or <jk>null</jk> if the parameter type is not one of the supported types.
044    */
045   public static RestSessionArgs create(ParameterInfo paramInfo) {
046      if (paramInfo.isType(RestSession.class))
047         return new RestSessionArgs(x -> x);
048      if (paramInfo.isType(UrlPath.class))
049         return new RestSessionArgs(RestSession::getUrlPath);
050      if (paramInfo.isType(UrlPathMatch.class))
051         return new RestSessionArgs(RestSession::getUrlPathMatch);
052      return null;
053   }
054
055   /**
056    * Constructor.
057    *
058    * @param <T> The function return type.
059    * @param function The function for finding the arg.
060    */
061   protected <T> RestSessionArgs(ThrowingFunction<RestSession,T> function) {
062      super(session -> function.apply(session.getRestSession()));
063   }
064}