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.arg;
018
019import org.apache.juneau.reflect.*;
020import org.apache.juneau.rest.*;
021import org.apache.juneau.rest.annotation.*;
022import org.apache.juneau.rest.util.*;
023import org.apache.juneau.utils.*;
024
025/**
026 * Resolves method parameters on {@link RestOp}-annotated Java methods of types found on the {@link RestSession} object.
027 *
028 * <ul class='javatree'>
029 *    <li class='jc'>{@link RestSession}
030 *    <li class='jc'>{@link UrlPath}
031 *    <li class='jc'>{@link UrlPathMatch}
032 * </ul>
033 *
034 * <h5 class='section'>See Also:</h5><ul>
035 *    <li class='link'><a class="doclink" href="https://juneau.apache.org/docs/topics/JavaMethodParameters">Java Method Parameters</a>
036 * </ul>
037 */
038public class RestSessionArgs extends SimpleRestOperationArg {
039
040   /**
041    * Static creator.
042    *
043    * @param paramInfo The Java method parameter being resolved.
044    * @return A new arg, or <jk>null</jk> if the parameter type is not one of the supported types.
045    */
046   public static RestSessionArgs create(ParamInfo paramInfo) {
047      if (paramInfo.isType(RestSession.class))
048         return new RestSessionArgs(x->x);
049      if (paramInfo.isType(UrlPath.class))
050         return new RestSessionArgs(RestSession::getUrlPath);
051      if (paramInfo.isType(UrlPathMatch.class))
052         return new RestSessionArgs(RestSession::getUrlPathMatch);
053      return null;
054   }
055
056   /**
057    * Constructor.
058    *
059    * @param <T> The function return type.
060    * @param function The function for finding the arg.
061    */
062   protected <T> RestSessionArgs(ThrowingFunction<RestSession,T> function) {
063      super(session -> function.apply(session.getRestSession()));
064   }
065}