MappingCallbacks (DataNucleus RDBMS plugin 5.2.7 API)

All Known Implementing Classes:

ArrayMapping, CollectionMapping, EmbeddedPCMapping, InterfaceMapping, MapMapping, ObjectMapping, OptionalMapping, OracleArrayMapping, OracleBitSetMapping, OracleCollectionMapping, OracleMapMapping, OracleSerialisedObjectMapping, OracleSerialisedPCMapping, OracleStringLobMapping, PersistableIdMapping, PersistableMapping, ReferenceIdMapping, ReferenceMapping, SerialisedLocalFileMapping, SingleCollectionMapping
```
public interface MappingCallbacks
```
Interface defining a series of callbacks that are called when this mapping goes through certain lifecycle events. This interface would be implemented by any type of mapping that handles a relation and so may need to perform action just before or just after a lifecycle event.

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`void`	`insertPostProcessing(org.datanucleus.state.ObjectProvider op)`	Hook so that we can handle any post-processing on the insert of a particular field.
`void`	`postFetch(org.datanucleus.state.ObjectProvider op)`	Method called after the retrieval of the object, so that additional operations can be performed if necessary.
`void`	`postInsert(org.datanucleus.state.ObjectProvider op)`	Method called after the insert of the object so that additional operations can be performed if necessary.
`void`	`postUpdate(org.datanucleus.state.ObjectProvider op)`	Method called after the update of the object, so that additional operations can be performed if necessary.
`void`	`preDelete(org.datanucleus.state.ObjectProvider op)`	Method called before the delete of objects, so that additional operations can be performed if necessary.

- Method Detail
  - insertPostProcessing
```
void insertPostProcessing(org.datanucleus.state.ObjectProvider op)
```
    Hook so that we can handle any post-processing on the insert of a particular field. For example with Oracle we need to insert "EMPTY_CLOB" and then immediately after do a SELECT of it and update the contents of the CLOB/BLOB.
    
    Parameters:
    
    op - ObjectProvider
  - postInsert
```
void postInsert(org.datanucleus.state.ObjectProvider op)
```
    Method called after the insert of the object so that additional operations can be performed if necessary.
    
    Parameters:
    
    op - ObjectProvider of the owner
  - postFetch
```
void postFetch(org.datanucleus.state.ObjectProvider op)
```
    Method called after the retrieval of the object, so that additional operations can be performed if necessary.
    
    Parameters:
    
    op - ObjectProvider of the owner
  - postUpdate
```
void postUpdate(org.datanucleus.state.ObjectProvider op)
```
    Method called after the update of the object, so that additional operations can be performed if necessary.
    
    Parameters:
    
    op - ObjectProvider of the owner
  - preDelete
```
void preDelete(org.datanucleus.state.ObjectProvider op)
```
    Method called before the delete of objects, so that additional operations can be performed if necessary.
    
    Parameters:
    
    op - ObjectProvider of the owner