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Java > Open Source Codes > org > apache > cayenne > reflect > pojo > EnhancedPojoToOneProperty


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19 package org.apache.cayenne.reflect.pojo;
20
21 import org.apache.cayenne.Fault;
22 import org.apache.cayenne.Persistent;
23 import org.apache.cayenne.reflect.Accessor;
24 import org.apache.cayenne.reflect.BaseToOneProperty;
25 import org.apache.cayenne.reflect.ClassDescriptor;
26 import org.apache.cayenne.reflect.PropertyException;
27
28 /**
29  * A property descriptor for the to-one relationship property of an enhanced pojo. Assumes
30  * a class in question has a field called "$cay_faultResolved_propertyName" that stores a
31  * boolean flag indicating whether the property in question is not yet resolved.
32  *
33  * @since 3.0
34  * @author Andrus Adamchik
35  */
36 class EnhancedPojoToOneProperty extends BaseToOneProperty {
37
38     protected EnhancedPojoPropertyFaultHandler faultHandler;
39
40     EnhancedPojoToOneProperty(ClassDescriptor owner, ClassDescriptor targetDescriptor,
41             Accessor accessor, String JavaDoc reverseName) {
42         super(owner, targetDescriptor, accessor, reverseName);
43         this.faultHandler = new EnhancedPojoPropertyFaultHandler(
44                 owner.getObjectClass(),
45                 getName());
46     }
47
48     public boolean isFault(Object JavaDoc source) {
49         return faultHandler.isFaultProperty(source);
50     }
51
52     public void invalidate(Object JavaDoc object) {
53         faultHandler.setFaultProperty(object, true);
54     }
55
56     void resolveFault(Object JavaDoc object) {
57         if (isFault(object)) {
58             Object JavaDoc target = Fault.getToOneFault().resolveFault(
59                     (Persistent) object,
60                     getName());
61             writePropertyDirectly(object, null, target);
62             faultHandler.setFaultProperty(object, false);
63         }
64     }
65
66     public Object JavaDoc readProperty(Object JavaDoc object) throws PropertyException {
67         resolveFault(object);
68         return super.readProperty(object);
69     }
70 }
71
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