Package org.apache.flink.table.types.inference

Class TypeInference.Builder

java.lang.Object

org.apache.flink.table.types.inference.TypeInference.Builder

Enclosing class:

TypeInference

@PublicEvolving
public static class TypeInference.Builder
extends Object

Builder for configuring and creating instances of TypeInference.

Constructor Summary

Constructors

Constructor	Description
Builder()

Method Summary

Modifier and Type	Method	Description
TypeInference.Builder	accumulatorTypeStrategy(TypeStrategy accumulatorTypeStrategy)	Sets the strategy for inferring the intermediate accumulator data type of an aggregate function call.
TypeInference	build()
TypeInference.Builder	inputTypeStrategy(InputTypeStrategy inputTypeStrategy)	Sets the strategy for inferring and validating input arguments in a function call.
TypeInference.Builder	namedArguments(String... argumentNames)	Deprecated. Use staticArguments(StaticArgument...) instead.
TypeInference.Builder	namedArguments(List<String> argumentNames)	Deprecated. Use staticArguments(List) instead.
TypeInference.Builder	optionalArguments(List<Boolean> optionalArguments)	Deprecated. Use staticArguments(List) instead.
TypeInference.Builder	outputTypeStrategy(TypeStrategy outputTypeStrategy)	Sets the strategy for inferring the final output data type of a function call.
TypeInference.Builder	stateTypeStrategies(LinkedHashMap<String,StateTypeStrategy> stateTypeStrategies)	Sets a map of state names to StateTypeStrategys for inferring a function call's intermediate result data types (i.e. state entries).
TypeInference.Builder	staticArguments(List<StaticArgument> staticArgument)	Sets a list of arguments in a static signature that is not overloaded and does not support varargs.
TypeInference.Builder	staticArguments(StaticArgument... staticArguments)	Sets a list of arguments in a static signature that is not overloaded and does not support varargs.
TypeInference.Builder	typedArguments(List<DataType> argumentTypes)	Deprecated. Use staticArguments(List) instead.
TypeInference.Builder	typedArguments(DataType... argumentTypes)	Deprecated. Use staticArguments(StaticArgument...) instead.

Methods inherited from class java.lang.Object

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

Constructor Detail

Builder

public Builder()

Method Detail

staticArguments

public TypeInference.Builder staticArguments(StaticArgument... staticArguments)

Sets a list of arguments in a static signature that is not overloaded and does not support varargs.

Static arguments are a special case of an input type strategy and takes precedence. A signature can take tables, models, or scalar values. It allows optional and/or named argument like f(myArg => 12).

staticArguments

public TypeInference.Builder staticArguments(List<StaticArgument> staticArgument)

Sets a list of arguments in a static signature that is not overloaded and does not support varargs.

Static arguments are a special case of an input type strategy and takes precedence. A signature can take tables, models, or scalar values. It allows optional and/or named argument like f(myArg => 12).

inputTypeStrategy

public TypeInference.Builder inputTypeStrategy(InputTypeStrategy inputTypeStrategy)

Sets the strategy for inferring and validating input arguments in a function call.

A InputTypeStrategies.WILDCARD strategy function is assumed by default.

accumulatorTypeStrategy

public TypeInference.Builder accumulatorTypeStrategy(TypeStrategy accumulatorTypeStrategy)

Sets the strategy for inferring the intermediate accumulator data type of an aggregate function call.

stateTypeStrategies

public TypeInference.Builder stateTypeStrategies(LinkedHashMap<String,StateTypeStrategy> stateTypeStrategies)

Sets a map of state names to StateTypeStrategys for inferring a function call's intermediate result data types (i.e. state entries). For aggregate functions, only one entry is allowed which defines the accumulator's data type.

outputTypeStrategy

public TypeInference.Builder outputTypeStrategy(TypeStrategy outputTypeStrategy)

Sets the strategy for inferring the final output data type of a function call.

Required.

build

public TypeInference build()

namedArguments

@Deprecated
public TypeInference.Builder namedArguments(List<String> argumentNames)

Deprecated.

Use staticArguments(List) instead.

Sets the list of argument names for specifying a fixed, not overloaded, not vararg input signature explicitly.

This information is useful for SQL's concept of named arguments using the assignment operator (e.g. FUNC(max => 42)). The names are used for reordering the call's arguments to the formal argument order of the function.

namedArguments

@Deprecated
public TypeInference.Builder namedArguments(String... argumentNames)

Deprecated.

Use staticArguments(StaticArgument...) instead.

See Also:

namedArguments(List)

optionalArguments

@Deprecated
public TypeInference.Builder optionalArguments(List<Boolean> optionalArguments)

Deprecated.

Use staticArguments(List) instead.

Sets the list of argument optionals for specifying optional arguments in the input signature explicitly.

This information is useful for SQL's concept of named arguments using the assignment operator. The optionals are used to determine whether an argument is optional or required in the function call.

typedArguments

@Deprecated
public TypeInference.Builder typedArguments(List<DataType> argumentTypes)

Deprecated.

Use staticArguments(List) instead.

Sets the list of argument types for specifying a fixed, not overloaded, not vararg input signature explicitly.

This information is useful for optional arguments with default value. In particular, the number of arguments that need to be filled with a default value and their types is

typedArguments

@Deprecated
public TypeInference.Builder typedArguments(DataType... argumentTypes)

Deprecated.

Use staticArguments(StaticArgument...) instead.

See Also:

typedArguments(List)