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Java > Open Source Codes > org > apache > commons > betwixt > io > read > BeanCreationChain


1 /*
2  * Copyright 2001-2004 The Apache Software Foundation.
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  * http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 package org.apache.commons.betwixt.io.read;
17
18 /**
19   * A Chain of bean creators.
20   *
21   * @author Robert Burrell Donkin
22   * @since 0.5
23   */
24 public abstract class BeanCreationChain {
25
26     
27 //-------------------------------------------------------- Class Methods
28
29     /**
30      * Creates the default <code>BeanCreationChain</code> used when reading beans.
31      * @return a <code>BeanCreationList</code> with the default creators loader in order, not null
32      */
33     public static final BeanCreationChain createDefaultChain() {
34         // this delegates to the list but this is the canonical version
35 // the implementation may change later
36 return BeanCreationList.createStandardChain();
37     }
38     
39 //-------------------------------------------------------- Instance Methods
40
41     /**
42       * Create a bean for the given mapping in the given context.
43       *
44       * @param elementMapping specifies the mapping between the type and element.
45       * <strong>Note</strong> it is recommended that classes do not store a permenant
46       * reference to this object since these objects may later be reused.
47       * Not null
48       * @param context the context in which this creation happens, not null
49       * @return the bean, possibly null
50       */
51     public abstract Object JavaDoc create(ElementMapping elementMapping, ReadContext context);
52     
53 }
54
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