WebObjects 4.5 Developer Documentation

Assignment

• TabDictionaryComputer
• BooleanAssignment
• DefaultAssignment

This class performs assignments on the right-hand side of rules. Every rule in the rule database has an instance of this class that holds the right-hand-side key and the right-hand-side value. The rule engine uses this class; you should never need to use it.

If you need custom assignment behavior you can subclass Assignment. To do so, you need to provide the two constructors:

Assignment (String keyPath, Object value)
Assignment (EOKeyValueUnarchiver unarchiver)

You can invoke super for each.

You can then override the fire method to provide the value. For example, if you define a method myMethod that returns the right-hand-side value myValue for a key, the fire method could look like:

public Object fire(D2WContext context)
{
  if (value().equals("myValue")) return myMethod(context);
}

Method Types

• public Assignment(String keyPath, Object value)
• Assignment()
• public Assignment(EOKeyValueUnarchiver unarchiver)

• keyPathKey
• valueKey

• keyPath
• toString
• value

• fire

• encodeWithKeyValueArchiver

You can override this method to provide your own assignments.