er.directtoweb
Class ERDSmartAttributeAssignment

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

All Implemented Interfaces:

EOKeyValueArchiving, ERDComputingAssignmentInterface, Serializable

Deprecated. use ERDDefaultModelAssignment

public class ERDSmartAttributeAssignment

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 an attribute 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.attribute will not fire properly. This is because attribute is null, instead of containing . The reason D2W does not find it is that it uses the Model to find out the EOAttribute and starts from A. Following the relationship b, gives a B, and asking B for an attribute named k returns nil 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 keys this assignment depends on

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

ERDSmartAttributeAssignment(EOKeyValueUnarchiver u)
Deprecated. Public constructor

ERDSmartAttributeAssignment(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	smartAttribute(D2WContext c) Deprecated. Resolves the EOAttribute in a smarter manner using the current object from the context as well as the propertyKey to determine the current attribute.

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 keys this assignment depends on

Constructor Detail

ERDSmartAttributeAssignment

public ERDSmartAttributeAssignment(EOKeyValueUnarchiver u)

Deprecated.

Public constructor

Parameters:

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

ERDSmartAttributeAssignment

public ERDSmartAttributeAssignment(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: "object.entityName" and "propertyKey". 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.

smartAttribute

public Object smartAttribute(D2WContext c)

Deprecated.

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

Parameters:

c - current D2W context

Returns:

attribute for the current propertyKey object combination.