org.apache.flink.table.runtime.functions

类 BuiltInSpecializedFunction

java.lang.Object

org.apache.flink.table.runtime.functions.BuiltInSpecializedFunction

所有已实现的接口:

org.apache.flink.table.functions.FunctionDefinition, org.apache.flink.table.functions.SpecializedFunction

直接已知子类:

UnnestRowsFunction

@Internal
public abstract class BuiltInSpecializedFunction
extends Object
implements org.apache.flink.table.functions.SpecializedFunction

Base class for built-in functions that need another level of specialization via SpecializedFunction.specialize(SpecializedContext).

Subclasses can create a specific UDF runtime implementation targeted to the given (fully known) arguments and derived output type. Subclasses must provide a default constructor.

嵌套类概要

从接口继承的嵌套类/接口 org.apache.flink.table.functions.SpecializedFunction

org.apache.flink.table.functions.SpecializedFunction.SpecializedContext

构造器概要

构造器

限定符	构造器和说明
protected	BuiltInSpecializedFunction(org.apache.flink.table.functions.BuiltInFunctionDefinition definition)

方法概要

限定符和类型	方法和说明
org.apache.flink.table.functions.FunctionKind	getKind()
Set<org.apache.flink.table.functions.FunctionRequirement>	getRequirements()
org.apache.flink.table.types.inference.TypeInference	getTypeInference(org.apache.flink.table.catalog.DataTypeFactory typeFactory)
boolean	isDeterministic()

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.functions.SpecializedFunction

specialize

构造器详细资料

BuiltInSpecializedFunction

protected BuiltInSpecializedFunction(org.apache.flink.table.functions.BuiltInFunctionDefinition definition)

方法详细资料

getKind

public org.apache.flink.table.functions.FunctionKind getKind()

指定者:

getKind 在接口中 org.apache.flink.table.functions.FunctionDefinition

getTypeInference

public org.apache.flink.table.types.inference.TypeInference getTypeInference(org.apache.flink.table.catalog.DataTypeFactory typeFactory)

指定者:

getTypeInference 在接口中 org.apache.flink.table.functions.FunctionDefinition

getRequirements

public Set<org.apache.flink.table.functions.FunctionRequirement> getRequirements()

指定者:

getRequirements 在接口中 org.apache.flink.table.functions.FunctionDefinition

isDeterministic

public boolean isDeterministic()

指定者:

isDeterministic 在接口中 org.apache.flink.table.functions.FunctionDefinition