org.apache.flink.table.module

类 CoreModule

java.lang.Object

org.apache.flink.table.module.CoreModule

所有已实现的接口:

Module

public class CoreModule
extends Object
implements Module

Module of default core metadata in Flink.

字段概要

字段

限定符和类型	字段和说明
static CoreModule	INSTANCE

方法概要

限定符和类型	方法和说明
Optional<FunctionDefinition>	getFunctionDefinition(String name) Get an optional of FunctionDefinition by a given name.
Set<String>	listFunctions() List names of all functions in this module.
Set<String>	listFunctions(boolean includeHiddenFunctions) List names of all functions in this module.

从类继承的方法 java.lang.Object

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

从接口继承的方法 org.apache.flink.table.module.Module

getTableSinkFactory, getTableSourceFactory

字段详细资料

INSTANCE

public static final CoreModule INSTANCE

方法详细资料

listFunctions

public Set<String> listFunctions()

从接口复制的说明: Module

List names of all functions in this module. It excludes internal functions.

指定者:

listFunctions 在接口中 Module

返回:

a set of function names

listFunctions

public Set<String> listFunctions(boolean includeHiddenFunctions)

从接口复制的说明: Module

List names of all functions in this module.

A module can decide to hide certain functions. For example, internal functions that can be resolved via Module.getFunctionDefinition(String) but should not be listed by default.

指定者:

listFunctions 在接口中 Module

参数:

includeHiddenFunctions - whether to list hidden functions or not

返回:

a set of function names

getFunctionDefinition

public Optional<FunctionDefinition> getFunctionDefinition(String name)

从接口复制的说明: Module

Get an optional of FunctionDefinition by a given name.

It includes hidden functions even though not listed in Module.listFunctions().

指定者:

getFunctionDefinition 在接口中 Module

参数:

name - name of the FunctionDefinition.

返回:

an optional function definition