KickJava   Java API By Example, From Geeks To Geeks.

Java > Open Source Codes > org > apache > cayenne > jpa > reflect > JpaCollectionFieldAccessor


1 /*****************************************************************
2  * Licensed to the Apache Software Foundation (ASF) under one
3  * or more contributor license agreements. See the NOTICE file
4  * distributed with this work for additional information
5  * regarding copyright ownership. The ASF licenses this file
6  * to you under the Apache License, Version 2.0 (the
7  * "License"); you may not use this file except in compliance
8  * with the License. You may obtain a copy of the License at
9  *
10  * http://www.apache.org/licenses/LICENSE-2.0
11  *
12  * Unless required by applicable law or agreed to in writing,
13  * software distributed under the License is distributed on an
14  * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
15  * KIND, either express or implied. See the License for the
16  * specific language governing permissions and limitations
17  * under the License.
18  ****************************************************************/
19
20 package org.apache.cayenne.jpa.reflect;
21
22 import org.apache.cayenne.Fault;
23 import org.apache.cayenne.Persistent;
24 import org.apache.cayenne.reflect.FieldAccessor;
25 import org.apache.cayenne.reflect.PropertyException;
26
27 class JpaCollectionFieldAccessor extends FieldAccessor {
28
29     public JpaCollectionFieldAccessor(Class JavaDoc objectClass, String JavaDoc propertyName,
30             Class JavaDoc propertyType) {
31         super(objectClass, propertyName, propertyType);
32
33         if (!Persistent.class.isAssignableFrom(objectClass)) {
34             throw new IllegalArgumentException JavaDoc("Only supports persistent classes. Got: "
35                     + objectClass);
36         }
37     }
38
39     /**
40      * Resolves a fault before setting the field.
41      */
42     @Override JavaDoc
43     public void setValue(Object JavaDoc object, Object JavaDoc newValue) throws PropertyException {
44
45         if (newValue instanceof Fault) {
46             newValue = ((Fault) newValue).resolveFault((Persistent) object, getName());
47         }
48
49         super.setValue(object, newValue);
50     }
51 }
52
Popular Tags