org.apache.flink.table.types.inference

类 TypeInference

java.lang.Object

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

@PublicEvolving
public final class TypeInference
extends Object

Provides logic for the type inference of function calls. It includes:

• explicit input specification for (possibly named and/or typed) arguments
• inference of missing or incomplete input types
• validation of input types
• inference of an intermediate accumulation type
• inference of the final output type

See TypeInferenceUtil for more information about the type inference process.

嵌套类概要

嵌套类

限定符和类型	类和说明
static class	TypeInference.Builder Builder for configuring and creating instances of TypeInference.

方法概要

限定符和类型	方法和说明
Optional<TypeStrategy>	getAccumulatorTypeStrategy()
InputTypeStrategy	getInputTypeStrategy()
Optional<List<String>>	getNamedArguments()
TypeStrategy	getOutputTypeStrategy()
Optional<List<DataType>>	getTypedArguments()
static TypeInference.Builder	newBuilder() Builder for configuring and creating instances of TypeInference.

从类继承的方法 java.lang.Object

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

方法详细资料

newBuilder

public static TypeInference.Builder newBuilder()

Builder for configuring and creating instances of TypeInference.

getNamedArguments

public Optional<List<String>> getNamedArguments()

getTypedArguments

public Optional<List<DataType>> getTypedArguments()

getInputTypeStrategy

public InputTypeStrategy getInputTypeStrategy()

getAccumulatorTypeStrategy

public Optional<TypeStrategy> getAccumulatorTypeStrategy()

getOutputTypeStrategy

public TypeStrategy getOutputTypeStrategy()