org.apache.nifi.attribute.expression.language

Class StandardExpressionLanguageCompiler

java.lang.Object

org.apache.nifi.attribute.expression.language.StandardExpressionLanguageCompiler

All Implemented Interfaces:

ExpressionLanguageCompiler

public class StandardExpressionLanguageCompiler
extends Object
implements ExpressionLanguageCompiler

Field Summary

Fields

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

Constructor Summary

Constructors

Constructor and Description
StandardExpressionLanguageCompiler(VariableRegistry variableRegistry, ParameterLookup parameterLookup)

Method Summary

Modifier and Type	Method and Description
AttributeExpression	compile(String expression)
AttributeExpression.ResultType	getResultType(String expression)
boolean	isValidExpression(String expression)
String	validateExpression(String expression, boolean allowSurroundingCharacters)

Methods inherited from class java.lang.Object

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

Field Detail

variableRegistry

private final VariableRegistry variableRegistry

parameterLookup

private final ParameterLookup parameterLookup

Constructor Detail

StandardExpressionLanguageCompiler

public StandardExpressionLanguageCompiler(VariableRegistry variableRegistry,
                                          ParameterLookup parameterLookup)

Method Detail

compile

public AttributeExpression compile(String expression)
                            throws IllegalArgumentException

Specified by:

compile in interface ExpressionLanguageCompiler

Throws:

IllegalArgumentException

isValidExpression

public boolean isValidExpression(String expression)

Specified by:

isValidExpression in interface ExpressionLanguageCompiler

validateExpression

public String validateExpression(String expression,
                                 boolean allowSurroundingCharacters)

Specified by:

validateExpression in interface ExpressionLanguageCompiler

getResultType

public AttributeExpression.ResultType getResultType(String expression)
                                             throws IllegalArgumentException

Specified by:

getResultType in interface ExpressionLanguageCompiler

Throws:

IllegalArgumentException