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 and Description
Builder()

Method Summary

Modifier and Type	Method and Description
TypeInference.Builder	accumulatorTypeStrategy(TypeStrategy accumulatorTypeStrategy) Sets the strategy for inferring the intermediate accumulator data type of a 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(List<String> argumentNames) Sets the list of argument names for specifying a fixed, not overloaded, not vararg input signature explicitly.
TypeInference.Builder	namedArguments(String... argumentNames)
TypeInference.Builder	optionalArguments(List<Boolean> optionalArguments) Sets the list of argument optionals for specifying optional arguments in the input signature explicitly.
TypeInference.Builder	outputTypeStrategy(TypeStrategy outputTypeStrategy) Sets the strategy for inferring the final output data type of a function call.
TypeInference.Builder	typedArguments(DataType... argumentTypes)
TypeInference.Builder	typedArguments(List<DataType> argumentTypes) Sets the list of argument types for specifying a fixed, not overloaded, not vararg input signature explicitly.

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

namedArguments

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

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

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

See Also:

namedArguments(List)

optionalArguments

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

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

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

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 important.

typedArguments

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

See Also:

typedArguments(List)

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 a function call.

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()