er.directtoweb
Class ERDSmartRelationshipAssignment

java.lang.Object
  com.webobjects.directtoweb.Assignment
      er.directtoweb.ERDAssignment
          er.directtoweb.ERDSmartRelationshipAssignment

All Implemented Interfaces:

EOKeyValueArchiving, ERDComputingAssignmentInterface, Serializable

Deprecated. use ERDDefaultModelAssignment

public class ERDSmartRelationshipAssignment

extends ERDAssignment

This class works around the following problem:

An entity A has a relationship b to an entity B, which has a subentity B1. B1 has a relationship k, which B does not have. If in an inspect page for entity A, you use b.k as a display key, then the D2W rules which are based on d2wContext.relationship will not fire properly. This is because relationship is null, instead of containing . The reason D2W does not find it is that it uses the Model to find out the EORelationship and starts from A. Following the relationship b, gives a B, and asking B for a relationship named k returns null and you lose.

See Also:

Serialized Form

Nested Class Summary

Nested classes inherited from class com.webobjects.eocontrol.EOKeyValueArchiving

EOKeyValueArchiving._NullValueSupport, EOKeyValueArchiving._NumberSupport, EOKeyValueArchiving._TimestampSupport, EOKeyValueArchiving.Awaking, EOKeyValueArchiving.FinishInitialization, EOKeyValueArchiving.Support

Field Summary

static NSArray

_DEPENDENT_KEYS Deprecated. holds the array of dependent keys

Fields inherited from class er.directtoweb.ERDAssignment

D2WContextClassArray, log

Fields inherited from class com.webobjects.directtoweb.Assignment

KeyPathKey, ValueKey

Fields inherited from interface com.webobjects.eocontrol.EOKeyValueArchiving

_CLASS

Constructor Summary

ERDSmartRelationshipAssignment(EOKeyValueUnarchiver u)
Deprecated. Public constructor

ERDSmartRelationshipAssignment(String key, Object value)
Deprecated. Public constructor

Method Summary

static Object	decodeWithKeyValueUnarchiver(EOKeyValueUnarchiver eokeyvalueunarchiver) Deprecated. Static constructor required by the EOKeyValueUnarchiver interface.
NSArray	dependentKeys(String keyPath) Deprecated. Implementation of the ERDComputingAssignmentInterface.
Object	smartRelationship(D2WContext c) Deprecated. Resolves the EORelationship in a smarter manner using the current object from the context as well as the propertyKey to determine the current relationship.

Methods inherited from class er.directtoweb.ERDAssignment

booleanContextValueForKey, fire, keyForMethodLookup, localizedTemplateStringForKeyInContext, localizedValueForKeyInContext, localizedValueForKeyWithDefaultInContext, localizerForContext, logDeprecatedMessage

Methods inherited from class com.webobjects.directtoweb.Assignment

encodeWithKeyValueArchiver, keyPath, toString, value, value

Methods inherited from class java.lang.Object

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

Field Detail

_DEPENDENT_KEYS

public static final NSArray _DEPENDENT_KEYS

Deprecated.

holds the array of dependent keys

Constructor Detail

ERDSmartRelationshipAssignment

public ERDSmartRelationshipAssignment(EOKeyValueUnarchiver u)

Deprecated.

Public constructor

Parameters:

u - key-value unarchiver used when unarchiving from rule files.

ERDSmartRelationshipAssignment

public ERDSmartRelationshipAssignment(String key,
                                      Object value)

Deprecated.

Public constructor

Parameters:

key - context key

value - of the assignment

Method Detail

decodeWithKeyValueUnarchiver

public static Object decodeWithKeyValueUnarchiver(EOKeyValueUnarchiver eokeyvalueunarchiver)

Deprecated.

Static constructor required by the EOKeyValueUnarchiver interface. If this isn't implemented then the default behavior is to construct the first super class that does implement this method. Very lame.

Parameters:

eokeyvalueunarchiver - to be unarchived

Returns:

decoded assignment of this class

dependentKeys

public NSArray dependentKeys(String keyPath)

Deprecated.

Implementation of the ERDComputingAssignmentInterface. This assignment depends upon the context keys: "propertyKey" and "object.entityName". This array of keys is used when constructing the significant keys for the passed in keyPath.

Parameters:

keyPath - to compute significant keys for.

Returns:

array of context keys this assignment depends upon.

smartRelationship

public Object smartRelationship(D2WContext c)

Deprecated.

Resolves the EORelationship in a smarter manner using the current object from the context as well as the propertyKey to determine the current relationship. Works even with inheirtance.

Parameters:

c - current D2W context

Returns:

relationship for the current propertyKey object combination.