DeleteRuleUpdater (cayenne-doc: Cayenne Documentation 4.2 API)

java.lang.Object
- org.apache.cayenne.util.DeleteRuleUpdater

All Implemented Interfaces:

EntityMergeListener
```
public class DeleteRuleUpdater
extends Object
implements EntityMergeListener
```
DeleteRuleUpdater is responsible for auto-setting delete rules for object relationships

Constructor Summary

Constructors
Constructor Description

DeleteRuleUpdater()

Method Summary

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`static EntityMergeListener`	`getEntityMergeListener()`	Returns EntityMergeListener instance, which can set delete rule at relationship change
`void`	`objAttributeAdded(ObjAttribute attr)`	Invoked when a missing attribute in ObjEntity is completed from DbEntity
`void`	`objRelationshipAdded(ObjRelationship rel)`	Invoked when a missing relationship in ObjEntity is completed from DbEntity
`static void`	`updateDataMap(DataMap map)`	Updates delete rules for all obj entities in a datamap
`static void`	`updateObjEntity(ObjEntity e)`	Updates delete rules for all relationships in a objentity
`static void`	`updateObjRelationship(ObjRelationship rel)`	Updates delete rules for specified relationship

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - DeleteRuleUpdater
```
public DeleteRuleUpdater()
```
- Method Detail
  - updateDataMap
```
public static void updateDataMap(DataMap map)
```
    Updates delete rules for all obj entities in a datamap
  - updateObjEntity
```
public static void updateObjEntity(ObjEntity e)
```
    Updates delete rules for all relationships in a objentity
  - updateObjRelationship
```
public static void updateObjRelationship(ObjRelationship rel)
```
    Updates delete rules for specified relationship
  - objAttributeAdded
```
public void objAttributeAdded(ObjAttribute attr)
```
    Description copied from interface: EntityMergeListener
    
    Invoked when a missing attribute in ObjEntity is completed from DbEntity
    
    Specified by:
    
    objAttributeAdded in interface EntityMergeListener
  - objRelationshipAdded
```
public void objRelationshipAdded(ObjRelationship rel)
```
    Description copied from interface: EntityMergeListener
    
    Invoked when a missing relationship in ObjEntity is completed from DbEntity
    
    Specified by:
    
    objRelationshipAdded in interface EntityMergeListener
  - getEntityMergeListener
```
public static EntityMergeListener getEntityMergeListener()
```
    Returns EntityMergeListener instance, which can set delete rule at relationship change