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1   /*
2    * Licensed to the Apache Software Foundation (ASF) under one or more
3    * contributor license agreements.  See the NOTICE file distributed with
4    * this work for additional information regarding copyright ownership.
5    * The ASF licenses this file to You under the Apache License, Version 2.0
6    * (the "License"); you may not use this file except in compliance with
7    * the License.  You may obtain a copy of the License at
8    * 
9    *      http://www.apache.org/licenses/LICENSE-2.0
10   * 
11   * Unless required by applicable law or agreed to in writing, software
12   * distributed under the License is distributed on an "AS IS" BASIS,
13   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14   * See the License for the specific language governing permissions and
15   * limitations under the License.
16   */ 
17  package org.apache.commons.betwixt.io.read;
18  
19  /**  
20    * Creator of beans that may delegate responsibility to members down the chain.
21    *
22    * @author Robert Burrell Donkin
23    * @since 0.5
24    */
25  public interface ChainedBeanCreator {
26      
27      /**
28        * Creates a bean either directly or by delegating the responsibility to the other
29        * members of the chain.
30        *
31        * @param elementMapping  specifies the mapping between the type and element.
32        * <strong>Note</strong> it is recommended that classes do not store a permenant
33        * reference to this object since these objects may later be reused.
34        * Not null
35        * @param context the context in which this converision happens, not null
36        * @param chain not null
37        * @return the Object created, possibly null
38        */
39      
40      // TODO: is element mapping really necessary here?
41      // TODO: what about exception handling? 
42      public Object create(
43                              ElementMapping elementMapping, 
44                              ReadContext context, 
45                              BeanCreationChain chain);
46      
47  }