org.apache.cayenne.map

Class DeleteRule

java.lang.Object

org.apache.cayenne.map.DeleteRule

public class DeleteRule
extends Object

Defines constants for the possible values of ObjRelationship delete rules.

Field Summary

Fields

Modifier and Type	Field and Description
static int	CASCADE Delete the destination object(s)
static int	DEFAULT_DELETE_RULE_TO_MANY Default delete rule for one-to-many relationships.
static int	DEFAULT_DELETE_RULE_TO_ONE Default delete rule for many-to-one relationships.
static int	DENY If the relationship has any objects (toOne or toMany), deny the delete.
static int	NO_ACTION
static int	NULLIFY Remove the reference that the destination has to this source (if the inverse relationship is toOne, nullify, if toMany, remove the source object)

Constructor Summary

Constructors

Constructor and Description
DeleteRule()

Method Summary

Methods

Modifier and Type	Method and Description
static int	deleteRuleForName(String name) Translates a possible delete rule name (typically returned from deleteRuleName at some stage), into a deleteRule constant
static String	deleteRuleName(int deleteRule) Returns String label for a delete rule state.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

NO_ACTION

public static final int NO_ACTION

See Also:

Constant Field Values

NULLIFY

public static final int NULLIFY

Remove the reference that the destination has to this source (if the inverse relationship is toOne, nullify, if toMany, remove the source object)

See Also:

Constant Field Values

CASCADE

public static final int CASCADE

Delete the destination object(s)

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Constant Field Values

DENY

public static final int DENY

If the relationship has any objects (toOne or toMany), deny the delete. (Destination objects would therefore have to be deleted manually first)

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Constant Field Values

DEFAULT_DELETE_RULE_TO_MANY

public static final int DEFAULT_DELETE_RULE_TO_MANY

Default delete rule for one-to-many relationships. It is used when new rels are created via modeler, or when synchrozining Obj- and DbEntities

See Also:

Constant Field Values

DEFAULT_DELETE_RULE_TO_ONE

public static final int DEFAULT_DELETE_RULE_TO_ONE

Default delete rule for many-to-one relationships. It is used when new rels are created via modeler, or when synchrozining Obj- and DbEntities

See Also:

Constant Field Values

Constructor Detail

DeleteRule

public DeleteRule()

Method Detail

deleteRuleName

public static String deleteRuleName(int deleteRule)

Returns String label for a delete rule state. Used for save/load (xml), display in modeler etc. Must remain the same, or else great care taken with loading old maps.

deleteRuleForName

public static int deleteRuleForName(String name)

Translates a possible delete rule name (typically returned from deleteRuleName at some stage), into a deleteRule constant