Package org.apache.nifi.attribute.expression.language.evaluation.selection

Class MappingEvaluator<T>

java.lang.Object

org.apache.nifi.attribute.expression.language.evaluation.selection.MappingEvaluator<T>

All Implemented Interfaces:

Evaluator<T>

public class MappingEvaluator<T>
extends Object
implements Evaluator<T>

Field Summary

Fields

Modifier and Type	Field	Description
private final ReduceEvaluator<T>	mappingEvaluator
private final MultiAttributeEvaluator	multiAttributeEvaluator
private String	token

Constructor Summary

Constructors

Constructor	Description
MappingEvaluator(ReduceEvaluator<T> mappingEvaluator, MultiAttributeEvaluator multiAttributeEval)

Method Summary

Modifier and Type	Method	Description
QueryResult<T>	evaluate(EvaluationContext evaluationContext)
int	getEvaluationsRemaining(EvaluationContext context)
AttributeExpression.ResultType	getResultType()
Evaluator<?>	getSubjectEvaluator()
String	getToken()
MultiAttributeEvaluator	getVariableIteratingEvaluator()
void	setToken(String token)	Sets the token that was used in the query to cause this Evaluator to be created

Methods inherited from class java.lang.Object

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

Field Details

mappingEvaluator

private final ReduceEvaluator<T> mappingEvaluator

multiAttributeEvaluator

private final MultiAttributeEvaluator multiAttributeEvaluator

token

private String token

Constructor Details

MappingEvaluator

public MappingEvaluator(ReduceEvaluator<T> mappingEvaluator,
 MultiAttributeEvaluator multiAttributeEval)

Method Details

evaluate

public QueryResult<T> evaluate(EvaluationContext evaluationContext)

Specified by:

evaluate in interface Evaluator<T>

getResultType

public AttributeExpression.ResultType getResultType()

Specified by:

getResultType in interface Evaluator<T>

getEvaluationsRemaining

public int getEvaluationsRemaining(EvaluationContext context)

Specified by:

getEvaluationsRemaining in interface Evaluator<T>

getSubjectEvaluator

public Evaluator<?> getSubjectEvaluator()

Specified by:

getSubjectEvaluator in interface Evaluator<T>

getToken

public String getToken()

Specified by:

getToken in interface Evaluator<T>

Returns:

the token that caused this Evaluator to be created

setToken

public void setToken(String token)

Description copied from interface: Evaluator

Sets the token that was used in the query to cause this Evaluator to be created

Specified by:

setToken in interface Evaluator<T>

Parameters:

token - the token that caused this Evaluator to be created

getVariableIteratingEvaluator

public MultiAttributeEvaluator getVariableIteratingEvaluator()