inpro.dm.isu
Class IUNetworkUpdateEngine

java.lang.Object
  inpro.dm.isu.AbstractUpdateEngine
      inpro.dm.isu.IUNetworkUpdateEngine

public class IUNetworkUpdateEngine
extends AbstractUpdateEngine

A rule-based update engine that keeps a set of rules and an information state to apply its rules to. Keeps a list output IU edits to interface with a dialogue manager.

Author:

okko

Field Summary

private java.util.List<EditMessage<DialogueActIU>>	edits The IU edits to return on request
private IUNetworkInformationState	is The information state to update
private org.apache.log4j.Logger	logger The logger

Fields inherited from class inpro.dm.isu.AbstractUpdateEngine

rules

Constructor Summary

IUNetworkUpdateEngine(IUNetworkDomainUtil u)
A simple constructor initiating an empty information state and a generic top-down search update mechanism producing GROUND, CLARIFY and REQUEST output.

Method Summary

void	applyRules() Applies all rules that trigger to the information state, in the order in which they were loaded.
void	applyRules(SemIU iu) Sets the input word on the information state and calls the update rules.
IUNetworkInformationState	getInformationState() Getter for the information state.
java.util.List<EditMessage<DialogueActIU>>	getNewEdits() Getter method for output edits.
void	setLogger(org.apache.log4j.Logger logger)

Methods inherited from class java.lang.Object

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

Field Detail

is

private IUNetworkInformationState is

The information state to update

edits

private java.util.List<EditMessage<DialogueActIU>> edits

The IU edits to return on request

logger

private org.apache.log4j.Logger logger

The logger

Constructor Detail

IUNetworkUpdateEngine

public IUNetworkUpdateEngine(IUNetworkDomainUtil u)

A simple constructor initiating an empty information state and a generic top-down search update mechanism producing GROUND, CLARIFY and REQUEST output. Can handle YesNo input for system- and user-self-correction. Sensitive to input revokes and output commits.

Method Detail

setLogger

public void setLogger(org.apache.log4j.Logger logger)

getNewEdits

public java.util.List<EditMessage<DialogueActIU>> getNewEdits()

Getter method for output edits. Returns and clears current list of edit messages.

Returns:

all new output DialogueActIUs edit messages

getInformationState

public IUNetworkInformationState getInformationState()

Getter for the information state.

applyRules

public void applyRules(SemIU iu)

Sets the input word on the information state and calls the update rules.

Parameters:

iu - the input word IU

applyRules

public void applyRules()

Applies all rules that trigger to the information state, in the order in which they were loaded. If applying a rule changes the information state, the process is restarted from the top and repeated until no more changes take effect. (The risk of infinite recursion must be tested by the rule designer.)

Specified by:

applyRules in class AbstractUpdateEngine