001// ***************************************************************************************************************************
002// * Licensed to the Apache Software Foundation (ASF) under one or more contributor license agreements.  See the NOTICE file *
003// * distributed with this work for additional information regarding copyright ownership.  The ASF licenses this file        *
004// * to you under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance            *
005// * with the License.  You may obtain a copy of the License at                                                              *
006// *                                                                                                                         *
007// *  http://www.apache.org/licenses/LICENSE-2.0                                                                             *
008// *                                                                                                                         *
009// * Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an  *
010// * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.  See the License for the        *
011// * specific language governing permissions and limitations under the License.                                              *
012// ***************************************************************************************************************************
013package org.apache.juneau.rest.arg;
014
015import org.apache.juneau.parser.*;
016import org.apache.juneau.reflect.*;
017import org.apache.juneau.rest.*;
018import org.apache.juneau.rest.annotation.*;
019import org.apache.juneau.rest.httppart.*;
020
021/**
022 * Resolves method parameters of type {@link ReaderParser} on {@link RestOp}-annotated Java methods.
023 *
024 * <p>
025 * The parameter value is resolved using:
026 * <p class='bjava'>
027 *    <jv>opSession</jv>
028 *       .{@link RestOpSession#getRequest() getRequest}()
029 *       .{@link RestRequest#getContent() getContent}()
030 *       .{@link RequestContent#getParserMatch() getParserMatch}()
031 *       .{@link ParserMatch#getParser() getParser}();
032 * </p>
033 *
034 * <h5 class='section'>See Also:</h5><ul>
035 *    <li class='link'><a class="doclink" href="../../../../../index.html#jrs.JavaMethodParameters">Java Method Parameters</a>
036 * </ul>
037 */
038public class ReaderParserArg extends SimpleRestOperationArg {
039
040   /**
041    * Static creator.
042    *
043    * @param paramInfo The Java method parameter being resolved.
044    * @return A new {@link ReaderParserArg}, or <jk>null</jk> if the parameter type is not {@link ReaderParser}.
045    */
046   public static ReaderParserArg create(ParamInfo paramInfo) {
047      if (paramInfo.isType(ReaderParser.class))
048         return new ReaderParserArg();
049      return null;
050   }
051
052   /**
053    * Constructor.
054    */
055   protected ReaderParserArg() {
056      super(opSession -> opSession.getRequest().getContent().getParserMatch().map(ParserMatch::getParser).filter(ReaderParser.class::isInstance).orElse(null));
057   }
058}