er.directtoweb
Class ERDDelayedNonNullConditionalAssignment

java.lang.Object
  com.webobjects.directtoweb.Assignment
      er.directtoweb.ERDDelayedAssignment
          er.directtoweb.ERDDelayedNonNullConditionalAssignment

All Implemented Interfaces:

EOKeyValueArchiving, Serializable

public class ERDDelayedNonNullConditionalAssignment

extends ERDDelayedAssignment

The delayed non-null conditional is a way to provide a branching result from a rule resolution. The value of this assignment must be a dictionary that has the following keys:

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 ERXLogger

log logging support

Fields inherited from class com.webobjects.directtoweb.Assignment

KeyPathKey, ValueKey

Fields inherited from interface com.webobjects.eocontrol.EOKeyValueArchiving

_CLASS

Constructor Summary

ERDDelayedNonNullConditionalAssignment(EOKeyValueUnarchiver u)
Public constructor

ERDDelayedNonNullConditionalAssignment(String key, Object value)
Public constructor

Method Summary

static Object	decodeWithKeyValueUnarchiver(EOKeyValueUnarchiver eokeyvalueunarchiver) Static constructor required by the EOKeyValueUnarchiver interface.
NSArray	dependentKeys(String keyPath) Implementation of the ERDComputingAssignmentInterface.
Object	fireNow(D2WContext c) Implementation of the abstract method from ERDDelayedAssignment.

Methods inherited from class er.directtoweb.ERDDelayedAssignment

fire

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

log

public static final ERXLogger log

logging support

Constructor Detail

ERDDelayedNonNullConditionalAssignment

public ERDDelayedNonNullConditionalAssignment(EOKeyValueUnarchiver u)

Public constructor

Parameters:

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

ERDDelayedNonNullConditionalAssignment

public ERDDelayedNonNullConditionalAssignment(String key,
                                              Object value)

Public constructor

Parameters:

key - context key

value - of the assignment

Method Detail

decodeWithKeyValueUnarchiver

public static Object decodeWithKeyValueUnarchiver(EOKeyValueUnarchiver eokeyvalueunarchiver)

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)

Implementation of the ERDComputingAssignmentInterface. This assignment depends upon an array composed of the single value "nonNullKeyPath" from the dictionary of the value of this assignment. 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.

fireNow

public Object fireNow(D2WContext c)

Implementation of the abstract method from ERDDelayedAssignment. This method is called each time this Assignment is resolved from the rule firing cache. For the non-null conditional the dictionary key 'nonNullKeyPath' is checked against the current context. If the key path is indeed non-null then the object returned by the dictionarykey 'trueValue' will be returned otherwise the object returned by the dictionarykey 'falseValue' will be returned.

Specified by:

fireNow in class ERDDelayedAssignment

Parameters:

c - current D2W context

Returns:

Either the 'trueValeue' or 'falseValue' depending on if the key path is non-null or null.