Types mapping

Types described in the Avro specification have to be mapped to types present in the platform.

You can find the mapping in the table below:

Avro type	Corresponding type in platform
null	null
boolean	boolean
int	int*
long	long*
float	float*
double	double*
string	string
record	AvroRecordUDR
enum	AvroEnumUDR
fixed	AvroFixedUDR

*Numeric types need casting while preparing data for encoding. See Avro Decoder/Encoder Example(4.2) example to see the usage.

UDRs

The following UDRs should be used while working with Avro Decoder/Encoder

AvroDecoderUDR

AvroDecoderUDR is used as an input for Avro Decoder.

The following fields are included in the AvroDecoderUDR :

Field	Description
data (bytearray)	This field contains a binary encoded avro message payload. This should be just a message payload without any metadata.
readerSchemaID (string)	Avro Reader SchemaID - ID of the compatible schema used for reading data
writerSchemaID (string)	Avro Writer SchemaID - schema used for encoding the message

DynamicAvroUDR

DynamicAvroUDR is an output of Avro Decoder.

It consists of only one field called data. The type of data field depends on a schema used for decoding operation. It can be both primitive or complex type. See Avro Types and UDRs(4.2) | Types mapping for mapping Avro types to MediationZone type.

Example

If type of the top element in a schema is record then the field type of data will be AvroRecordUDR and if type is string then the field type of data will be string.

See Avro Decoder/Encoder Example(4.2) to see an example usage of this UDR.

The following fields are included in the DynamicAvroUDR :

Field	Description
data (any)	Contains content decoded using a decoder

AvroEncoderUDR

AvroEncoderUDR is used as an input for Avro Encoder.

The following fields are included in the AvroEncoderUDR :

Field	Description
data (any)	This field contains a UDR/type to be encoded using a selected schema
writerSchemaID (string)	Avro Writer SchemaID - schema used for encoding the message

AvroEnumUDR

AvroEnumUDR is used to represent Enum avro type.

The following fields are included in the AvroEnumUDR :

Field	Description
fullname (string)	Name of the enum field (example “example.avro.myFixed”)
symbol (string)	Selected value of the specific enum type

AvroFixedUDR

AvroFixedUDR is used to representive Fixed avro type.

The following fields are included in the AvroFixedUDR :

Field	Description
bytes (bytearray)	Byte value of the field
fullname (string)	Name of the fixed field (example “example.avro.myFixed”)

AvroRecordUDR

AvroRecordUDR is used to represent Avro Record structure.

The following fields are included in the AvroRecordUDR :

Field	Description
fields (map<string,any>)	Map containing fields of the record.
fullname (string)	Name of the record including the namespace (example “example.avro.User3”)