Package org.apache.avro.io

Interface DatumWriter<D>

All Known Implementing Classes:

GenericDatumWriter, Json.ObjectWriter, ProtobufDatumWriter, ReflectDatumWriter, SpecificDatumWriter, ThriftDatumWriter

public interface DatumWriter<D>

Write data of a schema.

Implemented for different in-memory data representations.

Method Summary

Modifier and Type	Method	Description
void	setSchema(Schema schema)	Set the schema.
default byte[]	toByteArray(D datum)	Convenience method to Write a datum to a byte array.
void	write(D datum, Encoder out)	Write a datum.

Method Details

setSchema

void setSchema(Schema schema)

Set the schema.

write

void write(D datum,
 Encoder out)
    throws IOException

Write a datum. Traverse the schema, depth first, writing each leaf value in the schema from the datum to the output.

Throws:

IOException

toByteArray

default byte[] toByteArray(D datum)
                    throws IOException

Convenience method to Write a datum to a byte array. Traverse the schema, depth first, writing each leaf value in the schema from the datum to the byte array.

Parameters:

datum - The datum to serialize

Returns:

The serialized datum stored in an array of bytes

Throws:

IOException