Package tools.refinery.interpreter.rete.eval

Class EvaluatorCore

java.lang.Object

tools.refinery.interpreter.rete.eval.EvaluatorCore

Direct Known Subclasses:

EvaluatorCore.FunctionEvaluatorCore, EvaluatorCore.PredicateEvaluatorCore

public abstract class EvaluatorCore
extends Object

An instance of this class performs the evaluation of Java expressions.

Since:

1.5

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	EvaluatorCore.FunctionEvaluatorCore
static class	EvaluatorCore.PredicateEvaluatorCore

Field Summary

Fields

Modifier and Type	Field	Description
protected IExpressionEvaluator	evaluator
protected IEvaluatorNode	evaluatorNode
protected org.apache.log4j.Logger	logger
protected IQueryRuntimeContext	runtimeContext
protected int	sourceTupleWidth

Constructor Summary

Constructors

Constructor	Description
EvaluatorCore(org.apache.log4j.Logger logger, IExpressionEvaluator evaluator, Map<String,Integer> parameterPositions, int sourceTupleWidth)

Method Summary

Modifier and Type	Method	Description
protected Object	errorResult()
Object	evaluateTerm(Tuple input)
protected abstract String	evaluationKind()
void	init(IEvaluatorNode evaluatorNode)
abstract Iterable<Tuple>	performEvaluation(Tuple input)
protected String	prettyPrintTuple(Tuple tuple)

Methods inherited from class java.lang.Object

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

Field Details

logger

protected org.apache.log4j.Logger logger

evaluator

protected IExpressionEvaluator evaluator

sourceTupleWidth

protected int sourceTupleWidth

Since:

2.4

runtimeContext

protected IQueryRuntimeContext runtimeContext

evaluatorNode

protected IEvaluatorNode evaluatorNode

Constructor Details

EvaluatorCore

public EvaluatorCore(org.apache.log4j.Logger logger,
 IExpressionEvaluator evaluator,
 Map<String,Integer> parameterPositions,
 int sourceTupleWidth)

Method Details

init

public void init(IEvaluatorNode evaluatorNode)

performEvaluation

public abstract Iterable<Tuple> performEvaluation(Tuple input)

Since:

2.4

evaluationKind

protected abstract String evaluationKind()

evaluateTerm

public Object evaluateTerm(Tuple input)

prettyPrintTuple

protected String prettyPrintTuple(Tuple tuple)

errorResult

protected Object errorResult()