org.apache.nifi.attribute.expression.language

Class StandardAttributeExpression

java.lang.Object

org.apache.nifi.attribute.expression.language.StandardAttributeExpression

All Implemented Interfaces:

AttributeExpression

public class StandardAttributeExpression
extends Object
implements AttributeExpression

Nested Class Summary

Nested classes/interfaces inherited from interface org.apache.nifi.expression.AttributeExpression

AttributeExpression.ResultType

Field Summary

Fields

Modifier and Type	Field and Description
private ParameterLookup	parameterLookup
private Query	query
private VariableRegistry	variableRegistry

Constructor Summary

Constructors

Constructor and Description
StandardAttributeExpression(Query query, VariableRegistry variableRegistry, ParameterLookup parameterLookup)

Method Summary

Modifier and Type	Method and Description
String	evaluate()
String	evaluate(AttributeValueDecorator decorator)
String	evaluate(FlowFile flowFile)
String	evaluate(FlowFile flowFile, AttributeValueDecorator decorator)
AttributeExpression.ResultType	getResultType()

Methods inherited from class java.lang.Object

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

Field Detail

query

private final Query query

variableRegistry

private final VariableRegistry variableRegistry

parameterLookup

private final ParameterLookup parameterLookup

Constructor Detail

StandardAttributeExpression

public StandardAttributeExpression(Query query,
                                   VariableRegistry variableRegistry,
                                   ParameterLookup parameterLookup)

Method Detail

getResultType

public AttributeExpression.ResultType getResultType()

Specified by:

getResultType in interface AttributeExpression

evaluate

public String evaluate()
                throws ProcessException

Specified by:

evaluate in interface AttributeExpression

Throws:

ProcessException

evaluate

public String evaluate(AttributeValueDecorator decorator)
                throws ProcessException

Specified by:

evaluate in interface AttributeExpression

Throws:

ProcessException

evaluate

public String evaluate(FlowFile flowFile)
                throws ProcessException

Specified by:

evaluate in interface AttributeExpression

Throws:

ProcessException

evaluate

public String evaluate(FlowFile flowFile,
                       AttributeValueDecorator decorator)
                throws ProcessException

Specified by:

evaluate in interface AttributeExpression

Throws:

ProcessException