org.apache.nifi.attribute.expression.language

Class InvalidPreparedQuery

java.lang.Object

org.apache.nifi.attribute.expression.language.InvalidPreparedQuery

All Implemented Interfaces:

PreparedQuery

public class InvalidPreparedQuery
extends java.lang.Object
implements PreparedQuery

An implementation of PreparedQuery that throws an AttributeExpressionLanguageException when attempting to evaluate the query. This allows a PreparedQuery to be created, even though it can't be evaluated.

Constructor Summary

Constructors

Constructor and Description
InvalidPreparedQuery(java.lang.String query, java.lang.String explanation)

Method Summary

Modifier and Type	Method and Description
java.lang.String	evaluateExpressions(java.util.Map<java.lang.String,java.lang.String> valueLookup, AttributeValueDecorator decorator)
java.lang.String	evaluateExpressions(java.util.Map<java.lang.String,java.lang.String> valueLookup, AttributeValueDecorator decorator, java.util.Map<java.lang.String,java.lang.String> stateVariables)
VariableImpact	getVariableImpact() Returns a VariableImpact that can be used to determine whether or not a given variable impacts this Expression.
boolean	isExpressionLanguagePresent()

Methods inherited from class java.lang.Object

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

Constructor Detail

InvalidPreparedQuery

public InvalidPreparedQuery(java.lang.String query,
                            java.lang.String explanation)

Method Detail

evaluateExpressions

public java.lang.String evaluateExpressions(java.util.Map<java.lang.String,java.lang.String> valueLookup,
                                            AttributeValueDecorator decorator)
                                     throws ProcessException

Specified by:

evaluateExpressions in interface PreparedQuery

Throws:

ProcessException

evaluateExpressions

public java.lang.String evaluateExpressions(java.util.Map<java.lang.String,java.lang.String> valueLookup,
                                            AttributeValueDecorator decorator,
                                            java.util.Map<java.lang.String,java.lang.String> stateVariables)
                                     throws ProcessException

Specified by:

evaluateExpressions in interface PreparedQuery

Throws:

ProcessException

isExpressionLanguagePresent

public boolean isExpressionLanguagePresent()

Specified by:

isExpressionLanguagePresent in interface PreparedQuery

getVariableImpact

public VariableImpact getVariableImpact()

Description copied from interface: PreparedQuery

Returns a VariableImpact that can be used to determine whether or not a given variable impacts this Expression.

Specified by:

getVariableImpact in interface PreparedQuery

Returns:

a VariableImpact that can be used to determine whether or not a given variable impacts this Expression.