Package com.sun.jdo.api.persistence.model.jdo.impl

Class RelationshipElementImpl

java.lang.Object

com.sun.jdo.api.persistence.model.jdo.impl.PersistenceElementImpl

com.sun.jdo.api.persistence.model.jdo.impl.PersistenceMemberElementImpl

com.sun.jdo.api.persistence.model.jdo.impl.PersistenceFieldElementImpl

com.sun.jdo.api.persistence.model.jdo.impl.RelationshipElementImpl

All Implemented Interfaces:

PersistenceElement.Impl, PersistenceElementProperties, PersistenceFieldElement.Impl, PersistenceMemberElement.Impl, RelationshipElement.Impl

public class RelationshipElementImpl
extends PersistenceFieldElementImpl
implements RelationshipElement.Impl

Version:

%I%

Author:

raccah

Field Summary

Fields inherited from interface com.sun.jdo.api.persistence.model.jdo.PersistenceElement.Impl

ADD, REMOVE, SET

Fields inherited from interface com.sun.jdo.api.persistence.model.jdo.PersistenceElementProperties

PROP_CARDINALITY, PROP_COLLECTION_CLASS, PROP_DELETE_ACTION, PROP_ELEMENT_CLASS, PROP_FIELDS, PROP_GROUPS, PROP_IDENTITY, PROP_INVERSE_FIELD, PROP_KEY_CLASS, PROP_KEY_FIELD, PROP_MODIFIED, PROP_NAME, PROP_PERSISTENCE, PROP_PREFETCH, PROP_SENSITIVITY, PROP_UPDATE_ACTION

Constructor Summary

Constructors

Constructor	Description
RelationshipElementImpl()	Create new RelationshipElementImpl with no corresponding name.
RelationshipElementImpl(String name)	Creates new RelationshipElementImpl with the corresponding name

Method Summary

Modifier and Type	Method	Description
void	changeInverseRelationship(RelationshipElement inverseRelationship)	Changes the inverse relationship element for this relationship element.
String	getCollectionClass()	Get the collection class (for example Set, List, Vector, etc.) for this relationship element.
int	getDeleteAction()	Get the delete action for this relationship element.
String	getElementClass()	Get the element class for this relationship element.
String	getInverseRelationshipName()	Get the relative name of the inverse relationship field for this relationship element.
int	getLowerBound()	Get the lower cardinality bound for this relationship element.
int	getUpdateAction()	Get the update action for this relationship element.
int	getUpperBound()	Get the upper cardinality bound for this relationship element.
boolean	isPrefetch()	Determines whether this relationship element should prefetch or not.
void	setCollectionClass(String collectionClass)	Set the collection class for this relationship element.
void	setDeleteAction(int action)	Set the delete action for this relationship element.
void	setElementClass(String elementClass)	Set the element class for this relationship element.
void	setLowerBound(int lowerBound)	Set the lower cardinality bound for this relationship element.
void	setPrefetch(boolean flag)	Set whether this relationship element should prefetch or not.
void	setUpdateAction(int action)	Set the update action for this relationship element.
void	setUpperBound(int upperBound)	Set the upper cardinality bound for this relationship element.

Methods inherited from class com.sun.jdo.api.persistence.model.jdo.impl.PersistenceFieldElementImpl

getPersistenceType, isKey, isReadSensitive, isWriteSensitive, setKey, setPersistenceType, setReadSensitive, setWriteSensitive

Methods inherited from class com.sun.jdo.api.persistence.model.jdo.impl.PersistenceMemberElementImpl

firePropertyChange, fireVetoableChange

Methods inherited from class com.sun.jdo.api.persistence.model.jdo.impl.PersistenceElementImpl

addPropertyChangeListener, addVetoableChangeListener, attachToElement, getName, removePropertyChangeListener, removeVetoableChangeListener, setName

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.sun.jdo.api.persistence.model.jdo.PersistenceElement.Impl

addPropertyChangeListener, addVetoableChangeListener, attachToElement, getName, removePropertyChangeListener, removeVetoableChangeListener, setName

Methods inherited from interface com.sun.jdo.api.persistence.model.jdo.PersistenceFieldElement.Impl

getPersistenceType, isKey, isReadSensitive, isWriteSensitive, setKey, setPersistenceType, setReadSensitive, setWriteSensitive

Constructor Detail

RelationshipElementImpl

public RelationshipElementImpl()

Create new RelationshipElementImpl with no corresponding name. This constructor should only be used for cloning and archiving.

RelationshipElementImpl

public RelationshipElementImpl(String name)

Creates new RelationshipElementImpl with the corresponding name

Parameters:

name - the name of the element

Method Detail

getUpdateAction

public int getUpdateAction()

Get the update action for this relationship element.

Specified by:

getUpdateAction in interface RelationshipElement.Impl

Returns:

the update action, one of RelationshipElement.NONE_ACTION, RelationshipElement.NULLIFY_ACTION, RelationshipElement.RESTRICT_ACTION, RelationshipElement.CASCADE_ACTION, or RelationshipElement.AGGREGATE_ACTION. The default is NONE_ACTION.

setUpdateAction

public void setUpdateAction(int action)
                     throws ModelException

Set the update action for this relationship element.

Specified by:

setUpdateAction in interface RelationshipElement.Impl

Parameters:

action - - an integer indicating the update action, one of: RelationshipElement.NONE_ACTION, RelationshipElement.NULLIFY_ACTION, RelationshipElement.RESTRICT_ACTION, RelationshipElement.CASCADE_ACTION, or RelationshipElement.AGGREGATE_ACTION

Throws:

ModelException - if impossible

getDeleteAction

public int getDeleteAction()

Get the delete action for this relationship element.

Specified by:

getDeleteAction in interface RelationshipElement.Impl

Returns:

the delete action, one of RelationshipElement.NONE_ACTION, RelationshipElement.NULLIFY_ACTION, RelationshipElement.RESTRICT_ACTION, RelationshipElement.CASCADE_ACTION, or RelationshipElement.AGGREGATE_ACTION. The default is NONE_ACTION.

setDeleteAction

public void setDeleteAction(int action)
                     throws ModelException

Set the delete action for this relationship element.

Specified by:

setDeleteAction in interface RelationshipElement.Impl

Parameters:

action - - an integer indicating the delete action, one of: RelationshipElement.NONE_ACTION, RelationshipElement.NULLIFY_ACTION, RelationshipElement.RESTRICT_ACTION, RelationshipElement.CASCADE_ACTION, or RelationshipElement.AGGREGATE_ACTION

Throws:

ModelException - if impossible

isPrefetch

public boolean isPrefetch()

Determines whether this relationship element should prefetch or not.

Specified by:

isPrefetch in interface RelationshipElement.Impl

Returns:

true if the relationship should prefetch, false otherwise. The default is false.

setPrefetch

public void setPrefetch(boolean flag)
                 throws ModelException

Set whether this relationship element should prefetch or not.

Specified by:

setPrefetch in interface RelationshipElement.Impl

Parameters:

flag - - if true, the relationship is set to prefetch; otherwise, it is not

Throws:

ModelException - if impossible

getLowerBound

public int getLowerBound()

Get the lower cardinality bound for this relationship element. The default is 0.

Specified by:

getLowerBound in interface RelationshipElement.Impl

Returns:

the lower cardinality bound

setLowerBound

public void setLowerBound(int lowerBound)
                   throws ModelException

Set the lower cardinality bound for this relationship element.

Specified by:

setLowerBound in interface RelationshipElement.Impl

Parameters:

lowerBound - - an integer indicating the lower cardinality bound

Throws:

ModelException - if impossible

getUpperBound

public int getUpperBound()

Get the upper cardinality bound for this relationship element. The default is Integer.MAX_VALUE. Returns Integer.MAX_VALUE for n

Specified by:

getUpperBound in interface RelationshipElement.Impl

Returns:

the upper cardinality bound

setUpperBound

public void setUpperBound(int upperBound)
                   throws ModelException

Set the upper cardinality bound for this relationship element.

Specified by:

setUpperBound in interface RelationshipElement.Impl

Parameters:

upperBound - - an integer indicating the upper cardinality bound (use Integer.MAX_VALUE for n)

Throws:

ModelException - if impossible

getCollectionClass

public String getCollectionClass()

Get the collection class (for example Set, List, Vector, etc.) for this relationship element.

Specified by:

getCollectionClass in interface RelationshipElement.Impl

Returns:

the collection class

setCollectionClass

public void setCollectionClass(String collectionClass)
                        throws ModelException

Set the collection class for this relationship element.

Specified by:

setCollectionClass in interface RelationshipElement.Impl

Parameters:

collectionClass - - a string indicating the type of collection (for example Set, List, Vector, etc.)

Throws:

ModelException - if impossible

getElementClass

public String getElementClass()

Get the element class for this relationship element. If primitive types are supported, you can use wrapperclass.TYPE.toString() to specify them.

Specified by:

getElementClass in interface RelationshipElement.Impl

Returns:

the element class

setElementClass

public void setElementClass(String elementClass)
                     throws ModelException

Set the element class for this relationship element.

Specified by:

setElementClass in interface RelationshipElement.Impl

Parameters:

elementClass - - a string indicating the type of elements in the collection. If primitive types are supported, you can use wrapperclass.TYPE.toString() to specify them.

Throws:

ModelException - if impossible

getInverseRelationshipName

public String getInverseRelationshipName()

Get the relative name of the inverse relationship field for this relationship element. In the case of two-way relationships, the two relationship elements involved are inverses of each other. If this relationship element does not participate in a two-way relationship, this returns null. Note that it is possible to have this method return a value, but because of the combination of related class and lookup, there may be no corresponding RelationshipElement which can be found.

Specified by:

getInverseRelationshipName in interface RelationshipElement.Impl

Returns:

the relative name of the inverse relationship element

See Also:

RelationshipElement.getInverseRelationship(com.sun.jdo.api.persistence.model.Model)

changeInverseRelationship

public void changeInverseRelationship(RelationshipElement inverseRelationship)
                               throws ModelException

Changes the inverse relationship element for this relationship element. This method is invoked for both sides from RelationshipElement.setInverseRelationship(com.sun.jdo.api.persistence.model.jdo.RelationshipElement, com.sun.jdo.api.persistence.model.Model) and should handle the vetoable change events, property change events, and setting the internal variable.

Specified by:

changeInverseRelationship in interface RelationshipElement.Impl

Parameters:

inverseRelationship - - a relationship element to be used as the inverse for this relationship element or null if this relationship element does not participate in a two-way relationship.

Throws:

ModelException - if impossible