org.apache.nifi.attribute.expression.language.compile

Class ExpressionCompiler

java.lang.Object

org.apache.nifi.attribute.expression.language.compile.ExpressionCompiler

public class ExpressionCompiler
extends Object

Field Summary

Fields

Modifier and Type	Field and Description
private Set<Evaluator<?>>	evaluators

Constructor Summary

Constructors

Constructor and Description
ExpressionCompiler()

Method Summary

Modifier and Type	Method and Description
private <T> Evaluator<T>	addToken(Evaluator<T> evaluator, String token)
private Evaluator<Boolean>	buildBooleanEvaluator(org.antlr.runtime.tree.Tree tree)
Evaluator<?>	buildEvaluator(org.antlr.runtime.tree.Tree tree)
private Evaluator<?>	buildExpressionEvaluator(org.antlr.runtime.tree.Tree tree)
private Evaluator<?>	buildFunctionEvaluator(org.antlr.runtime.tree.Tree tree, Evaluator<?> subjectEvaluator, List<Evaluator<?>> argEvaluators)
private Evaluator<?>	buildFunctionExpressionEvaluator(org.antlr.runtime.tree.Tree tree, int offset)
CompiledExpression	compile(String expression)
private org.antlr.runtime.tree.Tree	compileTree(String expression)
private Evaluator<?>	getJsonPathUpdateEvaluator(Evaluator<?> argValueEvaluator, String location)
private Evaluator<?>	getRootSubjectEvaluator(Evaluator<?> evaluator)
private Evaluator<String>	newStringLiteralEvaluator(String literalValue)
private Evaluator<String>	newStringLiteralEvaluatorForEscapedRanges(String literalValue, List<Query.Range> escapedRanges)
private Evaluator<Boolean>	toBooleanEvaluator(Evaluator<?> evaluator)
private Evaluator<Boolean>	toBooleanEvaluator(Evaluator<?> evaluator, String location)
private DateEvaluator	toDateEvaluator(Evaluator<?> evaluator)
private DateEvaluator	toDateEvaluator(Evaluator<?> evaluator, String location)
private Evaluator<Double>	toDecimalEvaluator(Evaluator<?> evaluator)
private Evaluator<Double>	toDecimalEvaluator(Evaluator<?> evaluator, String location)
private Evaluator<Number>	toNumberEvaluator(Evaluator<?> evaluator)
private Evaluator<Number>	toNumberEvaluator(Evaluator<?> evaluator, String location)
private Evaluator<String>	toStringEvaluator(Evaluator<?> evaluator)
private Evaluator<String>	toStringEvaluator(Evaluator<?> evaluator, String location)
private Evaluator<Long>	toWholeNumberEvaluator(Evaluator<?> evaluator)
private Evaluator<Long>	toWholeNumberEvaluator(Evaluator<?> evaluator, String location)
private String	unescapeTrailingDollarSigns(String value)
private List<Evaluator<?>>	verifyArgCount(List<Evaluator<?>> args, int count, String functionName)
private void	verifyMappingEvaluatorReduced(Evaluator<?> evaluator)

Methods inherited from class java.lang.Object

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

Field Detail

evaluators

private final Set<Evaluator<?>> evaluators

Constructor Detail

ExpressionCompiler

public ExpressionCompiler()

Method Detail

compile

public CompiledExpression compile(String expression)

compileTree

private org.antlr.runtime.tree.Tree compileTree(String expression)
                                         throws AttributeExpressionLanguageParsingException

Throws:

AttributeExpressionLanguageParsingException

verifyMappingEvaluatorReduced

private void verifyMappingEvaluatorReduced(Evaluator<?> evaluator)

getRootSubjectEvaluator

private Evaluator<?> getRootSubjectEvaluator(Evaluator<?> evaluator)

buildExpressionEvaluator

private Evaluator<?> buildExpressionEvaluator(org.antlr.runtime.tree.Tree tree)

buildFunctionExpressionEvaluator

private Evaluator<?> buildFunctionExpressionEvaluator(org.antlr.runtime.tree.Tree tree,
                                                      int offset)

verifyArgCount

private List<Evaluator<?>> verifyArgCount(List<Evaluator<?>> args,
                                          int count,
                                          String functionName)

toStringEvaluator

private Evaluator<String> toStringEvaluator(Evaluator<?> evaluator)

toStringEvaluator

private Evaluator<String> toStringEvaluator(Evaluator<?> evaluator,
                                            String location)

toBooleanEvaluator

private Evaluator<Boolean> toBooleanEvaluator(Evaluator<?> evaluator,
                                              String location)

toBooleanEvaluator

private Evaluator<Boolean> toBooleanEvaluator(Evaluator<?> evaluator)

toWholeNumberEvaluator

private Evaluator<Long> toWholeNumberEvaluator(Evaluator<?> evaluator)

toWholeNumberEvaluator

private Evaluator<Long> toWholeNumberEvaluator(Evaluator<?> evaluator,
                                               String location)

toDecimalEvaluator

private Evaluator<Double> toDecimalEvaluator(Evaluator<?> evaluator)

toDecimalEvaluator

private Evaluator<Double> toDecimalEvaluator(Evaluator<?> evaluator,
                                             String location)

toNumberEvaluator

private Evaluator<Number> toNumberEvaluator(Evaluator<?> evaluator)

toNumberEvaluator

private Evaluator<Number> toNumberEvaluator(Evaluator<?> evaluator,
                                            String location)

toDateEvaluator

private DateEvaluator toDateEvaluator(Evaluator<?> evaluator)

toDateEvaluator

private DateEvaluator toDateEvaluator(Evaluator<?> evaluator,
                                      String location)

buildFunctionEvaluator

private Evaluator<?> buildFunctionEvaluator(org.antlr.runtime.tree.Tree tree,
                                            Evaluator<?> subjectEvaluator,
                                            List<Evaluator<?>> argEvaluators)

getJsonPathUpdateEvaluator

private Evaluator<?> getJsonPathUpdateEvaluator(Evaluator<?> argValueEvaluator,
                                                String location)

buildEvaluator

public Evaluator<?> buildEvaluator(org.antlr.runtime.tree.Tree tree)

addToken

private <T> Evaluator<T> addToken(Evaluator<T> evaluator,
                                  String token)

unescapeTrailingDollarSigns

private String unescapeTrailingDollarSigns(String value)

newStringLiteralEvaluator

private Evaluator<String> newStringLiteralEvaluator(String literalValue)

newStringLiteralEvaluatorForEscapedRanges

private Evaluator<String> newStringLiteralEvaluatorForEscapedRanges(String literalValue,
                                                                    List<Query.Range> escapedRanges)

buildBooleanEvaluator

private Evaluator<Boolean> buildBooleanEvaluator(org.antlr.runtime.tree.Tree tree)