org.apache.flink.formats.json

Class JsonRowDataDeserializationSchema

java.lang.Object

org.apache.flink.formats.json.AbstractJsonDeserializationSchema

org.apache.flink.formats.json.JsonRowDataDeserializationSchema

All Implemented Interfaces:

Serializable, DeserializationSchema<RowData>, ResultTypeQueryable<RowData>

@Internal
public class JsonRowDataDeserializationSchema
extends AbstractJsonDeserializationSchema

Deserialization schema from JSON to Flink Table/SQL internal data structure RowData.

Deserializes a byte[] message as a JSON object and reads the specified fields.

Failures during deserialization are forwarded as wrapped IOExceptions.

See Also:

Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from interface org.apache.flink.api.common.serialization.DeserializationSchema

DeserializationSchema.InitializationContext

Field Summary

Fields inherited from class org.apache.flink.formats.json.AbstractJsonDeserializationSchema

failOnMissingField, ignoreParseErrors, objectMapper

Constructor Summary

Constructors

Constructor and Description
JsonRowDataDeserializationSchema(RowType rowType, TypeInformation<RowData> resultTypeInfo, boolean failOnMissingField, boolean ignoreParseErrors, TimestampFormat timestampFormat)

Method Summary

Modifier and Type	Method and Description
RowData	convertToRowData(org.apache.flink.shaded.jackson2.com.fasterxml.jackson.databind.JsonNode message)
RowData	deserialize(byte[] message) Deserializes the byte message.
org.apache.flink.shaded.jackson2.com.fasterxml.jackson.databind.JsonNode	deserializeToJsonNode(byte[] message)

Methods inherited from class org.apache.flink.formats.json.AbstractJsonDeserializationSchema

equals, getProducedType, hashCode, isEndOfStream, open

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.flink.api.common.serialization.DeserializationSchema

deserialize

Constructor Detail

JsonRowDataDeserializationSchema

public JsonRowDataDeserializationSchema(RowType rowType,
                                        TypeInformation<RowData> resultTypeInfo,
                                        boolean failOnMissingField,
                                        boolean ignoreParseErrors,
                                        TimestampFormat timestampFormat)

Method Detail

deserialize

public RowData deserialize(@Nullable
                           byte[] message)
                    throws IOException

Description copied from interface: DeserializationSchema

Deserializes the byte message.

Parameters:

message - The message, as a byte array.

Returns:

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

Throws:

IOException

deserializeToJsonNode

public org.apache.flink.shaded.jackson2.com.fasterxml.jackson.databind.JsonNode deserializeToJsonNode(byte[] message)
                                                                                               throws IOException

Throws:

IOException

convertToRowData

public RowData convertToRowData(org.apache.flink.shaded.jackson2.com.fasterxml.jackson.databind.JsonNode message)