diff options
Diffstat (limited to 'java/beans/DefaultPersistenceDelegate.java')
| -rw-r--r-- | java/beans/DefaultPersistenceDelegate.java | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/java/beans/DefaultPersistenceDelegate.java b/java/beans/DefaultPersistenceDelegate.java index 9dd1ae564..ca1041fef 100644 --- a/java/beans/DefaultPersistenceDelegate.java +++ b/java/beans/DefaultPersistenceDelegate.java @@ -157,6 +157,23 @@ public class DefaultPersistenceDelegate extends PersistenceDelegate protected void initialize(Class type, Object oldInstance, Object newInstance, Encoder out) { + // Calling the supertype's implementation of initialize makes it + // possible that descendants of classes like AbstractHashMap + // or Hashtable are serialized correctly. This mechanism grounds on + // two other facts: + // * Each class which has not registered a special purpose + // PersistenceDelegate is handled by a DefaultPersistenceDelegate + // instance. + // * PersistenceDelegate.initialize() is implemented in a way that it + // calls the initialize method of the superclass' persistence delegate. + super.initialize(type, oldInstance, newInstance, out); + + // Suppresses the writing of property setting statements when this delegate + // is not used for the exact instance type. By doing so the following code + // is called only once per object. + if (type != oldInstance.getClass()) + return; + try { PropertyDescriptor[] propertyDescs = Introspector.getBeanInfo( |