org.apache.calcite.schema.impl

Class ReflectiveFunctionBase

java.lang.Object

org.apache.calcite.schema.impl.ReflectiveFunctionBase

All Implemented Interfaces:

Function

Direct Known Subclasses:

ScalarFunctionImpl, TableFunctionImpl, TableMacroImpl

public abstract class ReflectiveFunctionBase
extends Object
implements Function

Implementation of a function that is based on a method. This class mainly solves conversion of method parameter types to List<FunctionParameter> form.

Field Summary

Fields

Modifier and Type	Field and Description
Method	method Method that implements the function.
List<FunctionParameter>	parameters Types of parameter for the function call.

Constructor Summary

Constructors

Constructor and Description
ReflectiveFunctionBase(Method method) ReflectiveFunctionBase constructor

Method Summary

Methods

Modifier and Type	Method and Description
List<FunctionParameter>	getParameters() Returns the parameters of this function.
static com.google.common.collect.ImmutableList<FunctionParameter>	toFunctionParameters(Class... types)
static com.google.common.collect.ImmutableList<FunctionParameter>	toFunctionParameters(Iterable<? extends Class> types)

Methods inherited from class java.lang.Object

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

Field Detail

method

public final Method method

Method that implements the function.

parameters

public final List<FunctionParameter> parameters

Types of parameter for the function call.

Constructor Detail

ReflectiveFunctionBase

public ReflectiveFunctionBase(Method method)

ReflectiveFunctionBase constructor

Parameters:

method - method that is used to get type information from

Method Detail

getParameters

public List<FunctionParameter> getParameters()

Returns the parameters of this function.

Specified by:

getParameters in interface Function

Returns:

Parameters; never null

toFunctionParameters

public static com.google.common.collect.ImmutableList<FunctionParameter> toFunctionParameters(Class... types)

toFunctionParameters

public static com.google.common.collect.ImmutableList<FunctionParameter> toFunctionParameters(Iterable<? extends Class> types)