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

Class ScalarFunctionImpl

java.lang.Object

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

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

All Implemented Interfaces:

org.apache.beam.vendor.calcite.v1_20_0.org.apache.calcite.schema.Function, org.apache.beam.vendor.calcite.v1_20_0.org.apache.calcite.schema.ImplementableFunction, org.apache.beam.vendor.calcite.v1_20_0.org.apache.calcite.schema.ScalarFunction

Direct Known Subclasses:

ZetaSqlScalarFunctionImpl

public class ScalarFunctionImpl
extends UdfImplReflectiveFunctionBase
implements org.apache.beam.vendor.calcite.v1_20_0.org.apache.calcite.schema.ScalarFunction, org.apache.beam.vendor.calcite.v1_20_0.org.apache.calcite.schema.ImplementableFunction

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

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.beam.sdk.extensions.sql.impl.UdfImplReflectiveFunctionBase

UdfImplReflectiveFunctionBase.ParameterListBuilder

Field Summary

Fields inherited from class org.apache.beam.sdk.extensions.sql.impl.UdfImplReflectiveFunctionBase

method, parameters

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	ScalarFunctionImpl(java.lang.reflect.Method method, org.apache.beam.vendor.calcite.v1_20_0.org.apache.calcite.adapter.enumerable.CallImplementor implementor)
protected	ScalarFunctionImpl(java.lang.reflect.Method method, org.apache.beam.vendor.calcite.v1_20_0.org.apache.calcite.adapter.enumerable.CallImplementor implementor, java.lang.String jarPath)

Method Summary

Modifier and Type	Method and Description
static org.apache.beam.vendor.calcite.v1_20_0.org.apache.calcite.schema.Function	create(java.lang.reflect.Method method) Creates Function from given method.
static org.apache.beam.vendor.calcite.v1_20_0.com.google.common.collect.ImmutableMultimap<java.lang.String,org.apache.beam.vendor.calcite.v1_20_0.org.apache.calcite.schema.Function>	createAll(java.lang.Class<?> clazz) Creates Function for each method in a given class.
protected static org.apache.beam.vendor.calcite.v1_20_0.org.apache.calcite.adapter.enumerable.CallImplementor	createImplementor(java.lang.reflect.Method method)
org.apache.beam.vendor.calcite.v1_20_0.org.apache.calcite.adapter.enumerable.CallImplementor	getImplementor()
java.lang.String	getJarPath() Optional Beam filesystem path to the jar containing the bytecode for this function.
org.apache.beam.vendor.calcite.v1_20_0.org.apache.calcite.rel.type.RelDataType	getReturnType(org.apache.beam.vendor.calcite.v1_20_0.org.apache.calcite.rel.type.RelDataTypeFactory typeFactory)
org.apache.beam.vendor.calcite.v1_20_0.org.apache.calcite.rel.type.RelDataType	getReturnType(org.apache.beam.vendor.calcite.v1_20_0.org.apache.calcite.rel.type.RelDataTypeFactory typeFactory, org.apache.beam.vendor.calcite.v1_20_0.org.apache.calcite.sql.SqlOperatorBinding opBinding)
protected static void	validateMethod(java.lang.reflect.Method method)

Methods inherited from class org.apache.beam.sdk.extensions.sql.impl.UdfImplReflectiveFunctionBase

builder, getParameters

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.beam.vendor.calcite.v1_20_0.org.apache.calcite.schema.Function

getParameters

Constructor Detail

ScalarFunctionImpl

protected ScalarFunctionImpl(java.lang.reflect.Method method,
                             org.apache.beam.vendor.calcite.v1_20_0.org.apache.calcite.adapter.enumerable.CallImplementor implementor,
                             java.lang.String jarPath)

ScalarFunctionImpl

protected ScalarFunctionImpl(java.lang.reflect.Method method,
                             org.apache.beam.vendor.calcite.v1_20_0.org.apache.calcite.adapter.enumerable.CallImplementor implementor)

Method Detail

getJarPath

public java.lang.String getJarPath()

Optional Beam filesystem path to the jar containing the bytecode for this function. Empty if the function is assumed to already be on the classpath.

createAll

public static org.apache.beam.vendor.calcite.v1_20_0.com.google.common.collect.ImmutableMultimap<java.lang.String,org.apache.beam.vendor.calcite.v1_20_0.org.apache.calcite.schema.Function> createAll(java.lang.Class<?> clazz)

Creates Function for each method in a given class.

create

public static org.apache.beam.vendor.calcite.v1_20_0.org.apache.calcite.schema.Function create(java.lang.reflect.Method method)

Creates Function from given method. When eval method does not suit, null is returned.

Parameters:

method - method that is used to implement the function

Returns:

created Function or null

validateMethod

protected static void validateMethod(java.lang.reflect.Method method)

getReturnType

public org.apache.beam.vendor.calcite.v1_20_0.org.apache.calcite.rel.type.RelDataType getReturnType(org.apache.beam.vendor.calcite.v1_20_0.org.apache.calcite.rel.type.RelDataTypeFactory typeFactory)

Specified by:

getReturnType in interface org.apache.beam.vendor.calcite.v1_20_0.org.apache.calcite.schema.ScalarFunction

getImplementor

public org.apache.beam.vendor.calcite.v1_20_0.org.apache.calcite.adapter.enumerable.CallImplementor getImplementor()

Specified by:

getImplementor in interface org.apache.beam.vendor.calcite.v1_20_0.org.apache.calcite.schema.ImplementableFunction

createImplementor

protected static org.apache.beam.vendor.calcite.v1_20_0.org.apache.calcite.adapter.enumerable.CallImplementor createImplementor(java.lang.reflect.Method method)

getReturnType

public org.apache.beam.vendor.calcite.v1_20_0.org.apache.calcite.rel.type.RelDataType getReturnType(org.apache.beam.vendor.calcite.v1_20_0.org.apache.calcite.rel.type.RelDataTypeFactory typeFactory,
                                                                                                    org.apache.beam.vendor.calcite.v1_20_0.org.apache.calcite.sql.SqlOperatorBinding opBinding)