com.inductiveautomation.ignition.gateway.history

Interface HistoryEvaluator

All Superinterfaces:

Diagnosable

All Known Subinterfaces:

AbstractExecutableTag.ExecTagHistoryEvaluator

All Known Implementing Classes:

AbstractExecutableTag.ArrayHistorizer, AbstractExecutableTag.Historizer

public interface HistoryEvaluator
extends Diagnosable

Created by colby.clegg on 7/17/2015.

Field Summary

Fields

Modifier and Type	Field and Description
static QualifiedValue	CYCLE_EVALUATION A sentinal value that tells the evaluator that cyclic value evaluation has been performed (ie, scan class executed).

Method Summary

Modifier and Type	Method and Description
void	evaluate(QualifiedValue value)
void	release()

Methods inherited from interface com.inductiveautomation.ignition.common.Diagnosable

sampleDiagnostics

Field Detail

CYCLE_EVALUATION

static final QualifiedValue CYCLE_EVALUATION

A sentinal value that tells the evaluator that cyclic value evaluation has been performed (ie, scan class executed). This is used by systems that support eval count based max age.

Method Detail

evaluate

void evaluate(QualifiedValue value)

release

void release()