org.apache.flink.table.types

类 KeyValueDataType

java.lang.Object

org.apache.flink.table.types.DataType

org.apache.flink.table.types.KeyValueDataType

所有已实现的接口:

Serializable, AbstractDataType<DataType>

@PublicEvolving
public final class KeyValueDataType
extends DataType

A data type that contains a key and value data type (e.g. MAP).

另请参阅:

for a list of supported data types, 序列化表格

字段概要

从类继承的字段 org.apache.flink.table.types.DataType

conversionClass, logicalType

构造器概要

构造器

构造器和说明
KeyValueDataType(LogicalType logicalType, Class<?> conversionClass, DataType keyDataType, DataType valueDataType)
KeyValueDataType(LogicalType logicalType, DataType keyDataType, DataType valueDataType)

方法概要

限定符和类型	方法和说明
<R> R	accept(DataTypeVisitor<R> visitor)
DataType	bridgedTo(Class<?> newConversionClass) Adds a hint that data should be represented using the given class when entering or leaving the table ecosystem.
boolean	equals(Object o)
List<DataType>	getChildren()
DataType	getKeyDataType()
DataType	getValueDataType()
int	hashCode()
DataType	notNull() Adds a hint that null values are not expected in the data for this type.
DataType	nullable() Adds a hint that null values are expected in the data for this type (default behavior).

从类继承的方法 org.apache.flink.table.types.DataType

getConversionClass, getLogicalType, toString

从类继承的方法 java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

构造器详细资料

KeyValueDataType

public KeyValueDataType(LogicalType logicalType,
                        @Nullable
                        Class<?> conversionClass,
                        DataType keyDataType,
                        DataType valueDataType)

KeyValueDataType

public KeyValueDataType(LogicalType logicalType,
                        DataType keyDataType,
                        DataType valueDataType)

方法详细资料

getKeyDataType

public DataType getKeyDataType()

getValueDataType

public DataType getValueDataType()

notNull

public DataType notNull()

从接口复制的说明: AbstractDataType

Adds a hint that null values are not expected in the data for this type.

返回:

a new, reconfigured data type instance

nullable

public DataType nullable()

从接口复制的说明: AbstractDataType

Adds a hint that null values are expected in the data for this type (default behavior).

This method exists for explicit declaration of the default behavior or for invalidation of a previous call to AbstractDataType.notNull().

返回:

a new, reconfigured data type instance

bridgedTo

public DataType bridgedTo(Class<?> newConversionClass)

从接口复制的说明: AbstractDataType

Adds a hint that data should be represented using the given class when entering or leaving the table ecosystem.

A supported conversion class depends on the logical type and its nullability property.

Please see the implementation of LogicalType.supportsInputConversion(Class), LogicalType.supportsOutputConversion(Class), or the documentation for more information about supported conversions.

返回:

a new, reconfigured data type instance

getChildren

public List<DataType> getChildren()

指定者:

getChildren 在类中 DataType

accept

public <R> R accept(DataTypeVisitor<R> visitor)

指定者:

accept 在类中 DataType

equals

public boolean equals(Object o)

覆盖:

equals 在类中 DataType

hashCode

public int hashCode()

覆盖:

hashCode 在类中 DataType