接口的使用
org.apache.flink.table.types.inference.TypeStrategy

使用TypeStrategy的程序包

程序包	说明
org.apache.flink.table.functions
org.apache.flink.table.types.inference
org.apache.flink.table.types.inference.strategies

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

参数类型为TypeStrategy的org.apache.flink.table.functions中的方法

限定符和类型	方法和说明
BuiltInFunctionDefinition.Builder	BuiltInFunctionDefinition.Builder.accumulatorTypeStrategy(TypeStrategy accumulatorTypeStrategy)
BuiltInFunctionDefinition.Builder	BuiltInFunctionDefinition.Builder.outputTypeStrategy(TypeStrategy outputTypeStrategy)

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

声明为TypeStrategy的org.apache.flink.table.types.inference中的字段

限定符和类型	字段和说明
static TypeStrategy	TypeStrategies.ARRAY Type strategy that returns a DataTypes.ARRAY(DataType) with element type equal to the type of the first argument.
static TypeStrategy	TypeStrategies.COMMON
static TypeStrategy	TypeStrategies.DECIMAL_DIVIDE Type strategy that returns the quotient of an exact numeric division that includes at least one decimal.
static TypeStrategy	TypeStrategies.DECIMAL_MOD Type strategy that returns the modulo of an exact numeric division that includes at least one decimal.
static TypeStrategy	TypeStrategies.DECIMAL_PLUS <<<<<<< HEAD Type strategy that returns the sum of an exact numeric addition that includes at least one decimal.
static TypeStrategy	TypeStrategies.DECIMAL_SCALE0 Strategy that returns a decimal type but with a scale of 0.
static TypeStrategy	TypeStrategies.DECIMAL_TIMES Type strategy that returns the product of an exact numeric multiplication that includes at least one decimal.
static TypeStrategy	TypeStrategies.GET Type strategy that returns a type of a field nested inside a composite type that is described by the second argument.
static TypeStrategy	TypeStrategies.MAP Type strategy that returns a DataTypes.MAP(DataType, DataType) with a key type equal to type of the first argument and a value type equal to the type of second argument.
static TypeStrategy	TypeStrategies.MISSING Placeholder for a missing type strategy.
static TypeStrategy	TypeStrategies.ROUND Type strategy that returns the result of a rounding operation.
static TypeStrategy	TypeStrategies.ROW Type strategy that returns a DataTypes.ROW() with fields types equal to input types.
static TypeStrategy	TypeStrategies.STRING_CONCAT Type strategy that returns the type of a string concatenation.

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

限定符和类型	方法和说明
static TypeStrategy	TypeStrategies.argument(int pos) Type strategy that returns the n-th input argument.
static TypeStrategy	TypeStrategies.explicit(DataType dataType) Type strategy that returns a fixed DataType.
static TypeStrategy	TypeStrategies.first(TypeStrategy... strategies) Type strategy that returns the first type that could be inferred.
TypeStrategy	TypeInference.getOutputTypeStrategy()
static TypeStrategy	TypeStrategies.mapping(Map<InputTypeStrategy,TypeStrategy> mappings) Type strategy that maps an InputTypeStrategy to a TypeStrategy if the input strategy infers identical types.
static TypeStrategy	TypeStrategies.matchFamily(int argumentPos, LogicalTypeFamily family) Type strategy that returns the given argument if it is of the same logical type family.
static TypeStrategy	TypeStrategies.nullable(ConstantArgumentCount includedArgs, TypeStrategy initialStrategy) A type strategy that can be used to make a result type nullable if any of the selected input arguments is nullable.
static TypeStrategy	TypeStrategies.nullable(TypeStrategy initialStrategy) A type strategy that can be used to make a result type nullable if any of the input arguments is nullable.
static TypeStrategy	TypeStrategies.varyingString(TypeStrategy initialStrategy) A type strategy that ensures that the result type is either LogicalTypeRoot.VARCHAR or LogicalTypeRoot.VARBINARY from their corresponding non-varying roots.

返回变量类型为TypeStrategy的类型的org.apache.flink.table.types.inference中的方法

限定符和类型	方法和说明
Optional<TypeStrategy>	TypeInference.getAccumulatorTypeStrategy()

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

限定符和类型	方法和说明
TypeInference.Builder	TypeInference.Builder.accumulatorTypeStrategy(TypeStrategy accumulatorTypeStrategy) Sets the strategy for inferring the intermediate accumulator data type of a function call.
static TypeStrategy	TypeStrategies.first(TypeStrategy... strategies) Type strategy that returns the first type that could be inferred.
static DataType	TypeInferenceUtil.inferOutputType(CallContext callContext, TypeStrategy outputTypeStrategy) Infers an output type using the given TypeStrategy.
static TypeStrategy	TypeStrategies.nullable(ConstantArgumentCount includedArgs, TypeStrategy initialStrategy) A type strategy that can be used to make a result type nullable if any of the selected input arguments is nullable.
static TypeStrategy	TypeStrategies.nullable(TypeStrategy initialStrategy) A type strategy that can be used to make a result type nullable if any of the input arguments is nullable.
TypeInference.Builder	TypeInference.Builder.outputTypeStrategy(TypeStrategy outputTypeStrategy) Sets the strategy for inferring the final output data type of a function call.
static TypeStrategy	TypeStrategies.varyingString(TypeStrategy initialStrategy) A type strategy that ensures that the result type is either LogicalTypeRoot.VARCHAR or LogicalTypeRoot.VARBINARY from their corresponding non-varying roots.

类型变量类型为TypeStrategy的org.apache.flink.table.types.inference中的方法参数

限定符和类型	方法和说明
static TypeStrategy	TypeStrategies.mapping(Map<InputTypeStrategy,TypeStrategy> mappings) Type strategy that maps an InputTypeStrategy to a TypeStrategy if the input strategy infers identical types.

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

实现TypeStrategy的org.apache.flink.table.types.inference.strategies中的类

限定符和类型	类和说明
class	CommonTypeStrategy Type strategy that returns a common, least restrictive type of all arguments.
class	ExplicitTypeStrategy Type strategy that returns a fixed DataType.
class	FirstTypeStrategy Type strategy that returns the first type that could be inferred.
class	MappingTypeStrategy Type strategy that maps an InputTypeStrategy to a TypeStrategy if the input strategy infers compatible types.
class	MatchFamilyTypeStrategy Type strategy that returns the given argument if it is of the same logical type family.
class	MissingTypeStrategy Placeholder for a missing type strategy.
class	NullableTypeStrategy A type strategy that can be used to make a result type nullable if any of the selected input arguments is nullable.
class	UseArgumentTypeStrategy Type strategy that returns the n-th input argument.
class	VaryingStringTypeStrategy A type strategy that ensures that the result type is either LogicalTypeRoot.VARCHAR or LogicalTypeRoot.VARBINARY from their corresponding non-varying roots.

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

构造器和说明
NullableTypeStrategy(ConstantArgumentCount includedArguments, TypeStrategy initialStrategy)
VaryingStringTypeStrategy(TypeStrategy initialStrategy)

类型变量类型为TypeStrategy的org.apache.flink.table.types.inference.strategies中的构造器参数

构造器和说明
FirstTypeStrategy(List<? extends TypeStrategy> typeStrategies)
MappingTypeStrategy(Map<InputTypeStrategy,TypeStrategy> mappings)