Package org.elasticsearch.xpack.esql.expression.promql.function

Class PromqlFunctionRegistry

java.lang.Object

org.elasticsearch.xpack.esql.expression.promql.function.PromqlFunctionRegistry

public class PromqlFunctionRegistry
extends Object

A registry for PromQL functions that maps function names to their respective definitions.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
protected static interface	PromqlFunctionRegistry.AcrossSeriesBinary<T extends AggregateFunction>
protected static interface	PromqlFunctionRegistry.AcrossSeriesUnary<T extends AggregateFunction>
static final record	PromqlFunctionRegistry.Arity	Represents the parameter count constraints for a PromQL function.
static enum	PromqlFunctionRegistry.CounterSupport	Describes whether a PromQL function supports counter metric types.
static interface	PromqlFunctionRegistry.EsqlFunctionBuilder
static final record	PromqlFunctionRegistry.FunctionDefinition	Function definition record for registration and metadata.
protected static interface	PromqlFunctionRegistry.OverTime<T extends TimeSeriesAggregateFunction>
protected static interface	PromqlFunctionRegistry.OverTimeBinary<T extends TimeSeriesAggregateFunction>
static final record	PromqlFunctionRegistry.ParamInfo
static final record	PromqlFunctionRegistry.PromqlContext
protected static interface	PromqlFunctionRegistry.ScalarFunctionBuilder
protected static interface	PromqlFunctionRegistry.ScalarFunctionWithStepBuilder
protected static interface	PromqlFunctionRegistry.ValueTransformationFunction<T extends ScalarFunction>
protected static interface	PromqlFunctionRegistry.ValueTransformationFunctionBinary<T extends Expression>
protected static interface	PromqlFunctionRegistry.ValueTransformationFunctionTernary<T extends Expression>
protected static interface	PromqlFunctionRegistry.WithinSeries<T extends TimeSeriesAggregateFunction>

Field Summary

Fields

Modifier and Type	Field	Description
static final PromqlFunctionRegistry	INSTANCE

Method Summary

Modifier and Type	Method	Description
Collection<PromqlFunctionRegistry.FunctionDefinition>	allFunctions()
Expression	buildEsqlFunction(String name, Source source, Expression target, PromqlFunctionRegistry.PromqlContext ctx, List<Expression> extraParams)
void	checkFunction(Source source, String name)
PromqlFunctionRegistry.FunctionDefinition	functionMetadata(String name)	Retrieves the function definition metadata for the given function name.

Methods inherited from class java.lang.Object

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

Field Details

INSTANCE

public static final PromqlFunctionRegistry INSTANCE

Method Details

allFunctions

public Collection<PromqlFunctionRegistry.FunctionDefinition> allFunctions()

functionMetadata

public PromqlFunctionRegistry.FunctionDefinition functionMetadata(String name)

Retrieves the function definition metadata for the given function name.

checkFunction

public void checkFunction(Source source,
 String name)

buildEsqlFunction

public Expression buildEsqlFunction(String name,
 Source source,
 Expression target,
 PromqlFunctionRegistry.PromqlContext ctx,
 List<Expression> extraParams)