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;
014
015/**
016 * Class used to resolve {@link Class} objects to instances.
017 */
018public interface ResourceResolver {
019
020   /**
021    * Look for constructors where the arguments passed in must match exactly.
022    */
023   public static final ResourceResolver BASIC = new BasicResourceResolver();
024
025   /**
026    * Look for constructors where arguments may or may not exist in any order.
027    */
028   public static final ResourceResolver FUZZY = new FuzzyResourceResolver();
029
030   /**
031    * Resolves the specified class to a resource object.
032    *
033    * <p>
034    * Subclasses can override this method to provide their own custom resolution.
035    *
036    * <p>
037    * The default implementation simply creates a new class instance using {@link Class#newInstance()}.
038    *
039    * @param parent
040    *    The parent resource.
041    * @param c The class to resolve.
042    * @param args Optional arguments to pass to constructor
043    * @return The instance of that class.
044    */
045   <T> T resolve(Object parent, Class<T> c, Object...args);
046}