接口的使用
org.apache.flink.table.functions.FunctionDefinition

使用FunctionDefinition的程序包

程序包	说明
org.apache.flink.table.expressions
org.apache.flink.table.factories
org.apache.flink.table.functions
org.apache.flink.table.functions.python
org.apache.flink.table.module
org.apache.flink.table.types.inference
org.apache.flink.table.types.inference.strategies
org.apache.flink.table.types.inference.utils

org.apache.flink.table.expressions中FunctionDefinition的使用

返回FunctionDefinition的org.apache.flink.table.expressions中的方法

限定符和类型	方法和说明
FunctionDefinition	CallExpression.getFunctionDefinition()

参数类型为FunctionDefinition的org.apache.flink.table.expressions中的构造器

构造器和说明
CallExpression(FunctionDefinition functionDefinition, List<ResolvedExpression> args, DataType dataType)
CallExpression(FunctionIdentifier functionIdentifier, FunctionDefinition functionDefinition, List<ResolvedExpression> args, DataType dataType)

org.apache.flink.table.factories中FunctionDefinition的使用

返回FunctionDefinition的org.apache.flink.table.factories中的方法

限定符和类型	方法和说明
FunctionDefinition	FunctionDefinitionFactory.createFunctionDefinition(String name, CatalogFunction catalogFunction) Creates a FunctionDefinition from given CatalogFunction.

org.apache.flink.table.functions中FunctionDefinition的使用

实现FunctionDefinition的org.apache.flink.table.functions中的类

限定符和类型	类和说明
class	AggregateFunction<T,ACC> Base class for a user-defined aggregate function.
class	AggregateFunctionDefinition A "marker" function definition of an user-defined aggregate function that uses the old type system stack.
class	AsyncTableFunction<T> Base class for a user-defined asynchronously table function (UDTF).
class	BuiltInFunctionDefinition Definition of a built-in function.
class	ImperativeAggregateFunction<T,ACC> Base class for user-defined AggregateFunction and TableAggregateFunction.
class	ScalarFunction Base class for a user-defined scalar function.
class	ScalarFunctionDefinition A "marker" function definition of a user-defined scalar function that uses the old type system stack.
class	TableAggregateFunction<T,ACC> Base class for a user-defined table aggregate function.
class	TableAggregateFunctionDefinition A "marker" function definition of an user-defined table aggregate function that uses the old type system stack.
class	TableFunction<T> Base class for a user-defined table function.
class	TableFunctionDefinition A "marker" function definition of an user-defined table function that uses the old type system stack.
class	TemporalTableFunction Class representing temporal table function over some history table.
class	UserDefinedFunction Base class for all user-defined functions.

类型参数类型为FunctionDefinition的org.apache.flink.table.functions中的字段

限定符和类型	字段和说明
static List<FunctionDefinition>	BuiltInFunctionDefinitions.ORDERING
static Set<FunctionDefinition>	BuiltInFunctionDefinitions.TIME_ATTRIBUTES
static Set<FunctionDefinition>	BuiltInFunctionDefinitions.WINDOW_PROPERTIES

org.apache.flink.table.functions.python中FunctionDefinition的使用

实现FunctionDefinition的org.apache.flink.table.functions.python中的类

限定符和类型	类和说明
class	PythonAggregateFunction The wrapper of user defined python aggregate function.
class	PythonScalarFunction The wrapper of user defined python scalar function.
class	PythonTableFunction The wrapper of user defined python table function.

org.apache.flink.table.module中FunctionDefinition的使用

返回变量类型为FunctionDefinition的类型的org.apache.flink.table.module中的方法

限定符和类型	方法和说明
default Optional<FunctionDefinition>	Module.getFunctionDefinition(String name) Get an optional of FunctionDefinition by a given name.
Optional<FunctionDefinition>	CoreModule.getFunctionDefinition(String name)

org.apache.flink.table.types.inference中FunctionDefinition的使用

返回FunctionDefinition的org.apache.flink.table.types.inference中的方法

限定符和类型	方法和说明
FunctionDefinition	CallContext.getFunctionDefinition() Returns the function definition that defines the function currently being called.

参数类型为FunctionDefinition的org.apache.flink.table.types.inference中的方法

限定符和类型	方法和说明
static String	TypeInferenceUtil.generateSignature(TypeInference typeInference, String name, FunctionDefinition definition) Generates a signature of the given FunctionDefinition.
Signature.Argument	ArgumentTypeStrategy.getExpectedArgument(FunctionDefinition functionDefinition, int argumentPos) Returns a summary of the function's expected argument at argumentPos.
List<Signature>	InputTypeStrategy.getExpectedSignatures(FunctionDefinition definition) Returns a summary of the function's expected signatures.

参数类型为FunctionDefinition的org.apache.flink.table.types.inference中的构造器

构造器和说明
SurroundingInfo(String name, FunctionDefinition functionDefinition, TypeInference typeInference, int argumentCount, int innerCallPosition)

org.apache.flink.table.types.inference.strategies中FunctionDefinition的使用

参数类型为FunctionDefinition的org.apache.flink.table.types.inference.strategies中的方法

限定符和类型	方法和说明
Signature.Argument	FamilyArgumentTypeStrategy.getExpectedArgument(FunctionDefinition functionDefinition, int argumentPos)
Signature.Argument	AndArgumentTypeStrategy.getExpectedArgument(FunctionDefinition functionDefinition, int argumentPos)
Signature.Argument	RootArgumentTypeStrategy.getExpectedArgument(FunctionDefinition functionDefinition, int argumentPos)
Signature.Argument	OutputArgumentTypeStrategy.getExpectedArgument(FunctionDefinition functionDefinition, int argumentPos)
Signature.Argument	LiteralArgumentTypeStrategy.getExpectedArgument(FunctionDefinition functionDefinition, int argumentPos)
Signature.Argument	ConstraintArgumentTypeStrategy.getExpectedArgument(FunctionDefinition functionDefinition, int argumentPos)
Signature.Argument	OrArgumentTypeStrategy.getExpectedArgument(FunctionDefinition functionDefinition, int argumentPos)
Signature.Argument	ExplicitArgumentTypeStrategy.getExpectedArgument(FunctionDefinition functionDefinition, int argumentPos)
Signature.Argument	CompositeArgumentTypeStrategy.getExpectedArgument(FunctionDefinition functionDefinition, int argumentPos)
Signature.Argument	AnyArgumentTypeStrategy.getExpectedArgument(FunctionDefinition functionDefinition, int argumentPos)
List<Signature>	MapInputTypeStrategy.getExpectedSignatures(FunctionDefinition definition)
List<Signature>	CastInputTypeStrategy.getExpectedSignatures(FunctionDefinition definition)
List<Signature>	OrInputTypeStrategy.getExpectedSignatures(FunctionDefinition definition)
List<Signature>	SequenceInputTypeStrategy.getExpectedSignatures(FunctionDefinition definition)
List<Signature>	CommonInputTypeStrategy.getExpectedSignatures(FunctionDefinition definition)
List<Signature>	VaryingSequenceInputTypeStrategy.getExpectedSignatures(FunctionDefinition definition)
List<Signature>	SubsequenceInputTypeStrategy.getExpectedSignatures(FunctionDefinition definition)
List<Signature>	ComparableTypeStrategy.getExpectedSignatures(FunctionDefinition definition)
List<Signature>	WildcardInputTypeStrategy.getExpectedSignatures(FunctionDefinition definition)

org.apache.flink.table.types.inference.utils中FunctionDefinition的使用

返回FunctionDefinition的org.apache.flink.table.types.inference.utils中的方法

限定符和类型	方法和说明
FunctionDefinition	UnknownCallContext.getFunctionDefinition()
FunctionDefinition	AdaptedCallContext.getFunctionDefinition()

参数类型为FunctionDefinition的org.apache.flink.table.types.inference.utils中的构造器

构造器和说明
UnknownCallContext(DataTypeFactory typeFactory, String name, FunctionDefinition functionDefinition, int argumentCount)