org.apache.flink.runtime.state.v2

类 MapStateDescriptor<UK,UV>

java.lang.Object

org.apache.flink.runtime.state.v2.StateDescriptor<UV>

org.apache.flink.runtime.state.v2.MapStateDescriptor<UK,UV>

类型参数:

UK - The type of the user key for this map state.

UV - The type of the values that the map state can hold.

所有已实现的接口:

Serializable

public class MapStateDescriptor<UK,UV>
extends StateDescriptor<UV>

StateDescriptor for MapState. This can be used to create partitioned map state internally.

另请参阅:

序列化表格

嵌套类概要

从类继承的嵌套类/接口 org.apache.flink.runtime.state.v2.StateDescriptor

StateDescriptor.Type

构造器概要

构造器

构造器和说明
MapStateDescriptor(String stateId, org.apache.flink.api.common.typeinfo.TypeInformation<UK> userKeyTypeInfo, org.apache.flink.api.common.typeinfo.TypeInformation<UV> userValueTypeInfo) Creates a new MapStateDescriptor with the given stateId and type.
MapStateDescriptor(String stateId, org.apache.flink.api.common.typeinfo.TypeInformation<UK> userKeyTypeInfo, org.apache.flink.api.common.typeinfo.TypeInformation<UV> userValueTypeInfo, org.apache.flink.api.common.serialization.SerializerConfig serializerConfig) Creates a new MapStateDescriptor with the given stateId and type.

方法概要

限定符和类型	方法和说明
boolean	equals(Object o)
StateDescriptor.Type	getType() Return the specific Type of described state.
org.apache.flink.api.common.typeutils.TypeSerializer<UK>	getUserKeySerializer()

从类继承的方法 org.apache.flink.runtime.state.v2.StateDescriptor

enableTimeToLive, getSerializer, getStateId, getTtlConfig, hashCode, 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

MapStateDescriptor

public MapStateDescriptor(String stateId,
                          org.apache.flink.api.common.typeinfo.TypeInformation<UK> userKeyTypeInfo,
                          org.apache.flink.api.common.typeinfo.TypeInformation<UV> userValueTypeInfo)

Creates a new MapStateDescriptor with the given stateId and type.

参数:

stateId - The (unique) stateId for the state.

userKeyTypeInfo - The type of the user keys in the state.

userValueTypeInfo - The type of the values in the state.

MapStateDescriptor

public MapStateDescriptor(String stateId,
                          org.apache.flink.api.common.typeinfo.TypeInformation<UK> userKeyTypeInfo,
                          org.apache.flink.api.common.typeinfo.TypeInformation<UV> userValueTypeInfo,
                          org.apache.flink.api.common.serialization.SerializerConfig serializerConfig)

Creates a new MapStateDescriptor with the given stateId and type.

参数:

stateId - The (unique) stateId for the state.

userKeyTypeInfo - The type of the user keys in the state.

userValueTypeInfo - The type of the values in the state.

serializerConfig - The serializer related config used to generate TypeSerializer.

方法详细资料

getUserKeySerializer

@Nonnull
public org.apache.flink.api.common.typeutils.TypeSerializer<UK> getUserKeySerializer()

getType

public StateDescriptor.Type getType()

从类复制的说明: StateDescriptor

Return the specific Type of described state.

指定者:

getType 在类中 StateDescriptor<UV>

equals

public final boolean equals(Object o)

覆盖:

equals 在类中 StateDescriptor<UV>