Class CopyKeyFieldsFromObjectId


  • public class CopyKeyFieldsFromObjectId
    extends ClassMethod
    Method to generate the method "dnCopyKeyFieldsFromObjectId" using ASM. For datastore/nondurable identity this is
     public void dnCopyKeyFieldsFromObjectId(Persistable.ObjectIdFieldConsumer fc, Object oid)
     {
     }
     
    and for SingleFieldIdentity it is
     public void dnCopyKeyFieldsFromObjectId(Persistable.ObjectIdFieldConsumer fc, Object oid)
     {
         if (fc == null)
             throw new IllegalArgumentException("ObjectIdFieldConsumer is null");
         if (!(oid instanceof YYYIdentity))
             throw new ClassCastException("oid is not instanceof YYYIdentity");
         YYYIdentity o = (YYYIdentity) oid;
         fc.storeYYYField(1, o.getKey());
     }
     
    and for user-defined primary keys
     public void dnCopyKeyFieldsFromObjectId(Persistable.ObjectIdFieldConsumer fc, Object oid)
     {
         if (fc == null)
             throw new IllegalArgumentException("ObjectIdFieldConsumer is null");
         if (!(oid instanceof UserPrimaryKey))
             throw new ClassCastException("oid is not instanceof mydomain.UserPrimaryKey");
         UserPrimaryKey o = (UserPrimaryKey) oid;
         try
         {
             fc.storeYYYField(1, o.id);
             fc.storeZZZField(2, o.name);
         }
         catch(Exception e) {}
     }
     
    and for CompoundIdentity
     public void dnCopyKeyFieldsFromObjectId(Persistable.ObjectIdFieldConsumer fc, Object oid)
     {
         if (fc == null)
             throw new IllegalArgumentException("ObjectIdFieldConsumer is null");
         if (!(oid instanceof UserPrimaryKey))
             throw new ClassCastException("oid is not instanceof mydomain.UserPrimaryKey");
         UserPrimaryKey o = (UserPrimaryKey) oid;
         try
         {
             fc.storeYYYField(1, o.id);
             fc.storeZZZField(2, dnGetPersistenceManager().getObjectById(o.zzz, false));
         }
         catch (Exception e) {}
     }
     
    (the try-catch is for cases where we set the fields with reflection and it can throw an exception). There are some differences for fields .v. properties and also if fields in the PK are private.
    • Constructor Detail

      • CopyKeyFieldsFromObjectId

        public CopyKeyFieldsFromObjectId​(ClassEnhancer enhancer,
                                         String name,
                                         int access,
                                         Object returnType,
                                         Object[] argTypes,
                                         String[] argNames)
        Constructor.
        Parameters:
        enhancer - ClassEnhancer
        name - Name of method
        access - Access type
        returnType - Return type
        argTypes - Argument types
        argNames - Argument names