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.jsonschema.*;
020import org.apache.juneau.parser.*;
021import org.apache.juneau.reflect.*;
022import org.apache.juneau.rest.*;
023import org.apache.juneau.rest.annotation.*;
024import org.apache.juneau.serializer.*;
025import org.apache.juneau.utils.*;
026
027/**
028 * Resolves method parameters on {@link RestOp}-annotated Java methods of types found on the {@link RestOpContext} object.
029 *
030 * <ul class='javatree'>
031 *    <li class='jc'>{@link JsonSchemaGenerator}
032 *    <li class='jc'>{@link ParserSet}
033 *    <li class='jc'>{@link RestOpContext}
034 *    <li class='jc'>{@link SerializerSet}
035 * </ul>
036 *
037 * <h5 class='section'>See Also:</h5><ul>
038 *    <li class='link'><a class="doclink" href="https://juneau.apache.org/docs/topics/JavaMethodParameters">Java Method Parameters</a>
039 * </ul>
040 */
041public class RestOpContextArgs extends SimpleRestOperationArg {
042
043   /**
044    * Static creator.
045    *
046    * @param paramInfo The Java method parameter being resolved.
047    * @return A new arg, or <jk>null</jk> if the parameter type is not one of the supported types.
048    */
049   public static RestOpContextArgs create(ParamInfo paramInfo) {
050      if (paramInfo.isType(JsonSchemaGenerator.class))
051         return new RestOpContextArgs(RestOpContext::getJsonSchemaGenerator);
052      if (paramInfo.isType(ParserSet.class))
053         return new RestOpContextArgs(RestOpContext::getParsers);
054      if (paramInfo.isType(RestOpContext.class))
055         return new RestOpContextArgs(x->x);
056      if (paramInfo.isType(SerializerSet.class))
057         return new RestOpContextArgs(RestOpContext::getSerializers);
058      return null;
059   }
060
061   /**
062    * Constructor.
063    *
064    * @param <T> The function return type.
065    * @param function The function for finding the arg.
066    */
067   protected <T> RestOpContextArgs(ThrowingFunction<RestOpContext,T> function) {
068      super(session -> function.apply(session.getContext()));
069   }
070}