org.apache.cayenne.reflect
Class BaseArcProperty

java.lang.Object
  org.apache.cayenne.reflect.BaseProperty
      org.apache.cayenne.reflect.BaseArcProperty

All Implemented Interfaces:

ArcProperty, Property

Direct Known Subclasses:

BaseToManyProperty, BaseToOneProperty

public abstract class BaseArcProperty
extends BaseProperty
implements ArcProperty

A base implementation of the ArcProperty.

Since:

3.0

Field Summary

protected String	complimentaryReverseArcName
protected ObjRelationship	relationship
protected ClassDescriptor	targetDescriptor

Fields inherited from class org.apache.cayenne.reflect.BaseProperty

accessor, owner

Constructor Summary

BaseArcProperty(ClassDescriptor owner, ClassDescriptor targetDescriptor, Accessor accessor, String reverseName)

Method Summary

ArcProperty	getComplimentaryReverseArc() Returns a complimentary reverse ArcProperty or null if no reverse arc exists.
ObjRelationship	getRelationship() Returns a relationship associated with this arc.
ClassDescriptor	getTargetDescriptor() Returns a ClassDescriptor for the type of graph nodes pointed to by this arc property.
abstract boolean	isFault(Object source) Returns whether a target node connected to a given object is an unresolved fault.
protected void	setReverse(Object source, Object oldTarget, Object newTarget) A convenience method to set the reverse arc used by subclasses.
abstract boolean	visit(PropertyVisitor visitor) A visitor accept method.

Methods inherited from class org.apache.cayenne.reflect.BaseProperty

getName, injectValueHolder, readProperty, readPropertyDirectly, toString, writeProperty, writePropertyDirectly

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.cayenne.reflect.ArcProperty

invalidate

Methods inherited from interface org.apache.cayenne.reflect.Property

getName, injectValueHolder, readProperty, readPropertyDirectly, writeProperty, writePropertyDirectly

Field Detail

complimentaryReverseArcName

protected String complimentaryReverseArcName

targetDescriptor

protected ClassDescriptor targetDescriptor

relationship

protected ObjRelationship relationship

Constructor Detail

BaseArcProperty

public BaseArcProperty(ClassDescriptor owner,
                       ClassDescriptor targetDescriptor,
                       Accessor accessor,
                       String reverseName)

Method Detail

visit

public abstract boolean visit(PropertyVisitor visitor)

Description copied from interface: Property

A visitor accept method.

Specified by:

visit in interface Property

Specified by:

visit in class BaseProperty

Returns:

a status returned by the corresponding callback method of the visitor. It serves as an indication of whether peer properties processing is still needed.

isFault

public abstract boolean isFault(Object source)

Description copied from interface: ArcProperty

Returns whether a target node connected to a given object is an unresolved fault.

Specified by:

isFault in interface ArcProperty

Parameters:

source - an object that is a source object of the relationship.

getRelationship

public ObjRelationship getRelationship()

Description copied from interface: ArcProperty

Returns a relationship associated with this arc.

Specified by:

getRelationship in interface ArcProperty

getComplimentaryReverseArc

public ArcProperty getComplimentaryReverseArc()

Description copied from interface: ArcProperty

Returns a complimentary reverse ArcProperty or null if no reverse arc exists.

Specified by:

getComplimentaryReverseArc in interface ArcProperty

getTargetDescriptor

public ClassDescriptor getTargetDescriptor()

Description copied from interface: ArcProperty

Returns a ClassDescriptor for the type of graph nodes pointed to by this arc property. Note that considering that a target object may be a subclass of the class handled by the descriptor, users of this method may need to call ClassDescriptor.getSubclassDescriptor(Class) before using the descriptor to access objects.

Specified by:

getTargetDescriptor in interface ArcProperty

setReverse

protected void setReverse(Object source,
                          Object oldTarget,
                          Object newTarget)

A convenience method to set the reverse arc used by subclasses.