org.apache.beam.sdk.extensions.sql.impl

Class UdfImplReflectiveFunctionBase

java.lang.Object

org.apache.beam.sdk.extensions.sql.impl.UdfImplReflectiveFunctionBase

All Implemented Interfaces:

org.apache.calcite.schema.Function

Direct Known Subclasses:

ScalarFunctionImpl

public abstract class UdfImplReflectiveFunctionBase
extends java.lang.Object
implements org.apache.calcite.schema.Function

Beam-customized version from ReflectiveFunctionBase, to address BEAM-5921.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	UdfImplReflectiveFunctionBase.ParameterListBuilder Helps build lists of FunctionParameter.

Field Summary

Fields

Modifier and Type	Field and Description
java.lang.reflect.Method	method Method that implements the function.
java.util.List<org.apache.calcite.schema.FunctionParameter>	parameters Types of parameter for the function call.

Constructor Summary

Constructors

Constructor and Description
UdfImplReflectiveFunctionBase(java.lang.reflect.Method method) UdfImplReflectiveFunctionBase constructor.

Method Summary

Modifier and Type	Method and Description
static UdfImplReflectiveFunctionBase.ParameterListBuilder	builder() Creates a ParameterListBuilder.
java.util.List<org.apache.calcite.schema.FunctionParameter>	getParameters() Returns the parameters of this function.

Methods inherited from class java.lang.Object

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

Field Detail

method

public final java.lang.reflect.Method method

Method that implements the function.

parameters

public final java.util.List<org.apache.calcite.schema.FunctionParameter> parameters

Types of parameter for the function call.

Constructor Detail

UdfImplReflectiveFunctionBase

public UdfImplReflectiveFunctionBase(java.lang.reflect.Method method)

UdfImplReflectiveFunctionBase constructor.

Parameters:

method - method that is used to get type information from

Method Detail

getParameters

public java.util.List<org.apache.calcite.schema.FunctionParameter> getParameters()

Returns the parameters of this function.

Specified by:

getParameters in interface org.apache.calcite.schema.Function

Returns:

Parameters; never null

builder

public static UdfImplReflectiveFunctionBase.ParameterListBuilder builder()

Creates a ParameterListBuilder.