org.apache.flink.connector.mongodb.source.reader.deserializer

接口 MongoDeserializationSchema<T>

类型参数:

T - The output message type for sinking to downstream flink operator.

所有超级接口:

org.apache.flink.api.java.typeutils.ResultTypeQueryable<T>, Serializable

所有已知实现类:

MongoRowDataDeserializationSchema

@PublicEvolving
public interface MongoDeserializationSchema<T>
extends Serializable, org.apache.flink.api.java.typeutils.ResultTypeQueryable<T>

A schema bridge for deserializing the MongoDB's BsonDocument into a flink managed instance.

方法概要

限定符和类型	方法和说明
T	deserialize(org.bson.BsonDocument document) Deserializes the BSON document.
default void	deserialize(org.bson.BsonDocument document, org.apache.flink.util.Collector<T> out) Deserializes the BSON document.

从接口继承的方法 org.apache.flink.api.java.typeutils.ResultTypeQueryable

getProducedType

方法详细资料

deserialize

T deserialize(org.bson.BsonDocument document)
       throws IOException

Deserializes the BSON document.

参数:

document - The BSON document to deserialize.

返回:

The deserialized message as an object (null if the message cannot be deserialized).

抛出:

IOException

deserialize

default void deserialize(org.bson.BsonDocument document,
                         org.apache.flink.util.Collector<T> out)
                  throws IOException

Deserializes the BSON document.

Can output multiple records through the Collector. Note that number and size of the produced records should be relatively small. Depending on the source implementation records can be buffered in memory or collecting records might delay emitting checkpoint barrier.

参数:

document - The BSON document to deserialize.

out - The collector to put the resulting messages.

抛出:

IOException