Examples of org.datanucleus.store.fieldmanager.AttachFieldManager

Package org.datanucleus.store.fieldmanager

Examples of org.datanucleus.store.fieldmanager.AttachFieldManager

org.datanucleus.store.fieldmanager.AttachFieldManager
Utility class to handle the attach of fields. The attachment process has 2 distinct cases to cater for.
1. The object was detached, has been updated, and needs reattaching.
2. The object was detached from a different datastore, and is being attached here and we want to do a pass through the object to update the fields in the object before it is persisted
In the first case, the fields which are specified have their values (and dirty flags) updated. In the second case, all fields have their fields (and dirty flags) updated. In addition this field manager allows attaching a copy, or attaching in-situ.

            int[] nonPKFieldNumbers = getNonPrimaryKeyFieldNumbers();
            if (nonPKFieldNumbers != null && nonPKFieldNumbers.length > 0)
            {
                // Attach the (non-PK) fields from the transient
                detachedSM.provideFields(nonPKFieldNumbers,
                    new AttachFieldManager(this, getSecondClassMutableFields(), getNonPrimaryKeyFields(),
                        true, true, false));
            }


            // Disconnect the transient object
            replaceStateManager((PersistenceCapable) trans, null);

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            int[] attachFieldNumbers = getFieldNumbersOfLoadedOrDirtyFields(loadedFields, dirtyFields);
            if (attachFieldNumbers != null)
            {
                // Only update the fields that were detached, and only update them if there are any to update
                provideFields(attachFieldNumbers,
                    new AttachFieldManager(this, getSecondClassMutableFields(), dirtyFields,
                        persistent, true, false));
            }


            // Call any "post-attach" listeners
            getCallbackHandler().postAttach(myPC, myPC);

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        sm.setVersion(version);
        if (attachFieldNumbers != null)
        {
            // Attach all dirty fields, and load other loaded fields
            smDetached.provideFields(attachFieldNumbers,
                new AttachFieldManager(sm, getSecondClassMutableFields(), dirtyFields, persistent, cascade, true));
        }
    }

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            int[] attachFieldNumbers = getFieldNumbersOfLoadedOrDirtyFields(loadedFields, dirtyFields);
            if (attachFieldNumbers != null)
            {
                // Only update the fields that were detached, and only update them if there are any to update
                provideFields(attachFieldNumbers,
                    new AttachFieldManager(this, getSecondClassMutableFields(), dirtyFields, persistent, true, false));
            }


            // Call any "post-attach" listeners
            getCallbackHandler().postAttach(myPC, myPC);
        }

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                for (int i=0;i<dirtyFields.length;i++)
                {
                    fieldsToAttach[i] = (loadedFields[i] || dirtyFields[i]);
                }
                smDetached.provideFields(attachFieldNumbers,
                    new AttachFieldManager(sm, getSecondClassMutableFields(), fieldsToAttach, persistent, 
                        cascade, true));
            }
            else
            {
                // Attach all dirty fields
                smDetached.provideFields(attachFieldNumbers, 
                    new AttachFieldManager(sm, getSecondClassMutableFields(), dirtyFields, persistent, 
                        cascade, true));
            }
        }
    }

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