er.extensions.eof

Class ERXEntityFKConstraintOrder

java.lang.Object

er.extensions.eof.ERXEntityOrder

er.extensions.eof.ERXEntityFKConstraintOrder

public class ERXEntityFKConstraintOrder
extends ERXEntityOrder

Creates ordering based on foreign key dependencies.

Author:

chill

Nested Class Summary

Nested classes/interfaces inherited from class er.extensions.eof.ERXEntityOrder

ERXEntityOrder.EntityDeleteOrderComparator, ERXEntityOrder.EntityInsertOrderComparator

Field Summary

Fields inherited from class er.extensions.eof.ERXEntityOrder

allEntities, groupedEntities

Constructor Summary

Constructors

Constructor and Description
ERXEntityFKConstraintOrder() Convenience constructor for implementing classes.
ERXEntityFKConstraintOrder(com.webobjects.eoaccess.EOModelGroup modelGroup) Designated constructor for implementing classes.

Method Summary

Modifier and Type	Method and Description
protected NSDictionary	dependenciesByEntity() Processes the list of entities, creating the ordering dictionary based on foreign key constraints.
protected String	dependencyKeyFor(com.webobjects.eoaccess.EOEntity entity) This implementation returns entity.externalName() as the dependcy is actually on tables not EOEntities .
protected NSMutableSet	entitiesDependentOn(NSMutableDictionary dependencies, com.webobjects.eoaccess.EOEntity entity) Returns the list of the names of the entities that reference (depend on) this entity.
protected boolean	hasForeignKeyConstraint(com.webobjects.eoaccess.EORelationship relationship)

Methods inherited from class er.extensions.eof.ERXEntityOrder

allEntities, createListOfEntities, dependentEntities, generateOrdering, groupedEntities, hasDependenciesForEntity

Methods inherited from class java.lang.Object

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

Constructor Detail

ERXEntityFKConstraintOrder

public ERXEntityFKConstraintOrder(com.webobjects.eoaccess.EOModelGroup modelGroup)

Designated constructor for implementing classes.

Parameters:

modelGroup - EOModelGroup to get list of all entities from

ERXEntityFKConstraintOrder

public ERXEntityFKConstraintOrder()

Convenience constructor for implementing classes. Uses EOModelGroup.defaultGroup().

Method Detail

dependenciesByEntity

protected NSDictionary dependenciesByEntity()

Processes the list of entities, creating the ordering dictionary based on foreign key constraints.

Specified by:

dependenciesByEntity in class ERXEntityOrder

Returns:

a dictionary keyed on dependencyKeyFor(EOEntity)

hasForeignKeyConstraint

protected boolean hasForeignKeyConstraint(com.webobjects.eoaccess.EORelationship relationship)

Parameters:

relationship - EORelationship to test

Returns:

true if relationship models a relation that will have a foreign key constraint in the database

dependencyKeyFor

protected String dependencyKeyFor(com.webobjects.eoaccess.EOEntity entity)

This implementation returns entity.externalName() as the dependcy is actually on tables not EOEntities .

Overrides:

dependencyKeyFor in class ERXEntityOrder

Parameters:

entity - EOEntity to return key into dependency dictionary for

Returns:

key for entity into dependency dictionary returned by dependenciesByEntity()

entitiesDependentOn

protected NSMutableSet entitiesDependentOn(NSMutableDictionary dependencies,
                                           com.webobjects.eoaccess.EOEntity entity)

Returns the list of the names of the entities that reference (depend on) this entity. This list is populated by builddependencyList(). If builddependencyList() has not finished executing, the list returned by this method may not be complete.

Parameters:

dependencies - list of dependencies being built by builddependencyList()

entity - EOEntity to return list of referencing entities for

Returns:

list of names of entities previously recorded as referencing this entity