com.bigdata.relation.rule.eval
Interface IRuleTaskFactory

All Superinterfaces:

Serializable

All Known Implementing Classes:

DefaultRuleTaskFactory, RunRuleAndFlushBufferTaskFactory

public interface IRuleTaskFactory
extends Serializable

A factory for objects that handle the execution of an IRule. This interface is Serializable since instances of the interface must travel with the IRule to which they are attached.

Version:

$Id: IRuleTaskFactory.java 2265 2009-10-26 12:51:06Z thompsonbry $

Author:

Bryan Thompson

Method Summary

IStepTask

newTask(IRule rule, IJoinNexus joinNexus, IBuffer<ISolution[]> buffer) The object will be used to evaluate the rule for the IRule.

Method Detail

newTask

IStepTask newTask(IRule rule,
                  IJoinNexus joinNexus,
                  IBuffer<ISolution[]> buffer)

The object will be used to evaluate the rule for the IRule.

Parameters:

rule - The rule (MAY have been specialized since it was declared).

joinNexus - Encapsulates various important information required for join operations.

buffer - The buffer onto which chunks of computed ISolutions for the IRule must be written.

Returns:

null unless custom evaluation is desired.