org.caleigo.core
Class FieldRelation

java.lang.Object
  org.caleigo.core.FieldRelation

All Implemented Interfaces:

IFieldRelation, java.io.Serializable

public class FieldRelation

extends java.lang.Object

implements IFieldRelation

Basic implementation of the IFieldRelation An IFieldRelation is allways an agregate of an IEntityRelation that defines a link between two IEntityRelation objects. The relation objects does combined with the descriptor objects form a travesable graph.

This implementation of the IFieldRelation does not require that the classes of the linked descriptors has been loaded and initialized. The purpose is to avoid unnecesary expasions of the entire descriptor graph.

Version:

1.00

Author:

Dennis Zikovic

See Also:

Serialized Form

Constructor Summary

(package private)	FieldRelation(IFieldDescriptor referenceFieldDescriptor, IFieldDescriptor targetFieldDescriptor) Constructor for FieldRelation.
(package private)	FieldRelation(IFieldDescriptor referenceFieldDescriptor, java.lang.String targetEntityClassName, java.lang.String targetFieldSourceName) Constructor for FieldRelation.
(package private)	FieldRelation(java.lang.String referenceEntityClassName, java.lang.String referenceFieldSourceName, IFieldDescriptor targetFieldDescriptor) Constructor for FieldRelation.
(package private)	FieldRelation(java.lang.String referenceEntityClassName, java.lang.String referenceFieldSourceName, java.lang.String targetEntityClassName, java.lang.String targetFieldSourceName) Constructor for FieldRelation.

Method Summary

boolean	equals(java.lang.Object obj)
IEntityRelation	getEntityRelation() Access method that return the IEntityRelation that the called IFieldRelation is a part of.
IFieldDescriptor	getReferenceField() Access method that return the IFieldDescriptor that is the source/reference field that addresses another field.
IFieldDescriptor	getTargetField() Access method that return the IFieldDescriptor that is the target field that are addressed by the reference field.
(package private) void	setEntityRelation(IEntityRelation relation) Mutation method with restricted access to avoid missuse.

Methods inherited from class java.lang.Object

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

Constructor Detail

FieldRelation

FieldRelation(java.lang.String referenceEntityClassName,
              java.lang.String referenceFieldSourceName,
              java.lang.String targetEntityClassName,
              java.lang.String targetFieldSourceName)

Constructor for FieldRelation. Note package scope to avoid missuse.

FieldRelation

FieldRelation(IFieldDescriptor referenceFieldDescriptor,
              java.lang.String targetEntityClassName,
              java.lang.String targetFieldSourceName)

Constructor for FieldRelation. Note package scope to avoid missuse.

FieldRelation

FieldRelation(java.lang.String referenceEntityClassName,
              java.lang.String referenceFieldSourceName,
              IFieldDescriptor targetFieldDescriptor)

Constructor for FieldRelation. Note package scope to avoid missuse.

FieldRelation

FieldRelation(IFieldDescriptor referenceFieldDescriptor,
              IFieldDescriptor targetFieldDescriptor)

Constructor for FieldRelation. Note package scope to avoid missuse.

Method Detail

equals

public boolean equals(java.lang.Object obj)

getEntityRelation

public IEntityRelation getEntityRelation()

Access method that return the IEntityRelation that the called IFieldRelation is a part of.

Specified by:

getEntityRelation in interface IFieldRelation

getReferenceField

public IFieldDescriptor getReferenceField()

Access method that return the IFieldDescriptor that is the source/reference field that addresses another field. In RDB terms the reference field is or should be defined as a foreign key.

Specified by:

getReferenceField in interface IFieldRelation

getTargetField

public IFieldDescriptor getTargetField()

Access method that return the IFieldDescriptor that is the target field that are addressed by the reference field. In RDB terms the target field is usually a primary-key field.

Specified by:

getTargetField in interface IFieldRelation

setEntityRelation

void setEntityRelation(IEntityRelation relation)

Mutation method with restricted access to avoid missuse.