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

Interface MongoDeserializationSchema<T>

Type Parameters:

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

All Superinterfaces:

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

All Known Implementing Classes:

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.

Method Summary

Modifier and Type	Method and Description
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.

Methods inherited from interface org.apache.flink.api.java.typeutils.ResultTypeQueryable

getProducedType

Method Detail

deserialize

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

Deserializes the BSON document.

Parameters:

document - The BSON document to deserialize.

Returns:

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

Throws:

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.

Parameters:

document - The BSON document to deserialize.

out - The collector to put the resulting messages.

Throws:

IOException