policyMgmt
Interface Condition

All Known Implementing Classes:

AlwaysCondition, IsRepeated

public interface Condition

Interface for conditions used in rules.

Method Summary

boolean	evaluate(Event evt, java.util.Hashtable unify) This is the condition's main method.
java.util.Hashtable	getFreeIdents() Return a Hashtable of element identifiers.

Method Detail

evaluate

public boolean evaluate(Event evt,
                        java.util.Hashtable unify)

This is the condition's main method. It represents the condition expression of a rule. It can make use of the event that triggered the rule and related elements.

Parameters:

evt - event that triggered the rule

unify - hashtable of elements to check. These hashtable elements use the keys defined by the getFreeIdents() method

Returns:

true if the condition was fulfilled

getFreeIdents

public java.util.Hashtable getFreeIdents()

Return a Hashtable of element identifiers. The value of each hashtable element has to contain an element class name. The key of each hashtable element has to be a unique string that is used by the evaluate() method to refer to the elements.

Returns:

Hashtable of class names keyed by referential name