DomainObjectContainer.persistIfNotAlready(domainObject) causing invoked of JDO
InstanceCallbacks.jdoPreStore() method even if JDO persistent(managed) domain
object is not modified.
Code snippet:
isisJdocontainer is of type DomainObjectContainer .
OmScaServiceMap is JDO persistence capable entity.
OmScaServiceMap scaServiceMap = isisJdocontainer.firstMatch(new
QueryDefault<OmScaServiceMap>(
OmScaServiceMap.class,
"fetch_OmScaServiceMap_by_sca_service_map", "scaUid", scaUid, "serviceUid",
serviceUid));
if (scaServiceMap == null) {
scaServiceMap =
isisJdocontainer.newTransientInstance(OmScaServiceMap.class);
scaServiceMap.setScaUid(scaUid);
scaServiceMap.setServiceUid(serviceUid);
scaServiceMap.setChangeBy(isisJdocontainer.getUser().getName());
scaServiceMap.setChangeDt(new Date());
}
scaServiceMap.setOrgId(orgId);
isisJdocontainer.persistIfNotAlready(scaServiceMap);
invoked Here I am trying to find OmScaServiceMap by its composite PK. If not
exists, create it with newTransientInstance and set the required attribtes
while creating a new instance.
Otherwise just set the remaining attributes, that is orgId.
OmScaServiceMap implements InstanceCallbacks and has overridden the method
jdoPreStore() which is defined as follows:
public void jdoPreStore() {
this.setChangeBy(this.container.getUser().getName());
this.setChangeDt(new Date());
}
Problem:
In case of managed entity(OmScaServiceMap already existing case): even if value
of orgId is the same one(as that in the database) that is trying to be set,
jdoPreStore is getting called and modifying the changeDt
attribute(this.setChangeDt(new Date());) and causing Update query issued to the
database.
persistIfNotAlready should not cause invoke of InstanceCallBack.jdoPreStore
when domainObject properties are not modified.
Please help on this issue.
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