com.bea.p13n.rules.manager
Class RuleResultClassFilter

java.lang.Object
  com.bea.p13n.rules.manager.RuleResultClassFilter

All Implemented Interfaces:

ObjectFilter, Serializable

Direct Known Subclasses:

RuleResultClassFilter

public class RuleResultClassFilter

extends Object

implements ObjectFilter, Serializable

A RuleResultClassFilter can be used to filter rule Result objects (the results of firing rules). The rule Result object contains an embedded object that is the created by the rule action. This filter checks the class type of the embedded object and, if it matches the class type of this filter, passes the embedded object through the filter .

Additionally, a rule name can be associated with this filter. If the rule name is non-null the eligible rule Result objects are also filtered by rule name.

The functionality above allows this filter to select the objects that were created by the rules engine that are of a given class type and optinally were created by a rule with a given name.

See Also:

Serialized Form

Constructor Summary

RuleResultClassFilter(String ruleName, Class targetClass)
Constructs a RuleResultClassFilter.

RuleResultClassFilter(String ruleName, Class[] targetClassArray)
Constructs a RuleResultClassFilter.

Method Summary

Object	filter(Object obj) Performs the filtering of objects created by the action of rule firing.
void	reset() This is a stateless filter and does not require reset be called.

Methods inherited from class java.lang.Object

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

Constructor Detail

RuleResultClassFilter

public RuleResultClassFilter(String ruleName,
                             Class targetClass)

Constructs a RuleResultClassFilter.

RuleResultClassFilter

public RuleResultClassFilter(String ruleName,
                             Class[] targetClassArray)

Constructs a RuleResultClassFilter.

Method Detail

filter

public Object filter(Object obj)

Performs the filtering of objects created by the action of rule firing.

Specified by:

filter in interface ObjectFilter

Parameters:

obj - the object to be filtered.

Returns:

the result of the filtering or null.

reset

public void reset()

This is a stateless filter and does not require reset be called.

Specified by:

reset in interface ObjectFilter