org.apache.flink.table.types.inference.strategies

类 ItemAtTypeStrategy

java.lang.Object

org.apache.flink.table.types.inference.strategies.ItemAtTypeStrategy

所有已实现的接口:

TypeStrategy

@Internal
public final class ItemAtTypeStrategy
extends Object
implements TypeStrategy

An output type strategy for BuiltInFunctionDefinitions.AT.

Returns either the element of an LogicalTypeFamily.COLLECTION type or the value of LogicalTypeRoot.MAP.

构造器概要

构造器

构造器和说明
ItemAtTypeStrategy()

方法概要

限定符和类型	方法和说明
Optional<DataType>	inferType(CallContext callContext) Infers a type from the given function call.

从类继承的方法 java.lang.Object

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

构造器详细资料

ItemAtTypeStrategy

public ItemAtTypeStrategy()

方法详细资料

inferType

public Optional<DataType> inferType(CallContext callContext)

从接口复制的说明: TypeStrategy

Infers a type from the given function call.

指定者:

inferType 在接口中 TypeStrategy