org.apache.avro.specific

Class SpecificDatumWriter<T>

java.lang.Object

org.apache.avro.generic.GenericDatumWriter<T>

org.apache.avro.specific.SpecificDatumWriter<T>

All Implemented Interfaces:

DatumWriter<T>

Direct Known Subclasses:

ReflectDatumWriter

public class SpecificDatumWriter<T>
extends GenericDatumWriter<T>

DatumWriter for generated Java classes.

Constructor Summary

Constructors

Modifier	Constructor and Description
	SpecificDatumWriter()
	SpecificDatumWriter(Class<T> c)
	SpecificDatumWriter(Schema schema)
	SpecificDatumWriter(Schema root, SpecificData specificData)
protected	SpecificDatumWriter(SpecificData specificData)

Method Summary

Modifier and Type	Method and Description
SpecificData	getSpecificData() Returns the SpecificData implementation used by this writer.
protected void	writeEnum(Schema schema, Object datum, Encoder out) Called to write an enum value.
protected void	writeField(Object datum, Schema.Field f, Encoder out, Object state) Called to write a single field of a record.
protected void	writeRecord(Schema schema, Object datum, Encoder out) Called to write a record.
protected void	writeString(Schema schema, Object datum, Encoder out) Called to write a string.

Methods inherited from class org.apache.avro.generic.GenericDatumWriter

addAvroTypeMsg, addClassCastMsg, convert, getArrayElements, getArraySize, getData, getMapEntries, getMapSize, npe, resolveUnion, setSchema, write, write, writeArray, writeBytes, writeFixed, writeMap, writeString, writeWithoutConversion

Methods inherited from class java.lang.Object

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

Constructor Detail

SpecificDatumWriter

public SpecificDatumWriter()

SpecificDatumWriter

public SpecificDatumWriter(Class<T> c)

SpecificDatumWriter

public SpecificDatumWriter(Schema schema)

SpecificDatumWriter

public SpecificDatumWriter(Schema root,
                           SpecificData specificData)

SpecificDatumWriter

protected SpecificDatumWriter(SpecificData specificData)

Method Detail

getSpecificData

public SpecificData getSpecificData()

Returns the SpecificData implementation used by this writer.

writeEnum

protected void writeEnum(Schema schema,
                         Object datum,
                         Encoder out)
                  throws IOException

Description copied from class: GenericDatumWriter

Called to write an enum value. May be overridden for alternate enum representations.

Overrides:

writeEnum in class GenericDatumWriter<T>

Throws:

IOException

writeString

protected void writeString(Schema schema,
                           Object datum,
                           Encoder out)
                    throws IOException

Description copied from class: GenericDatumWriter

Called to write a string. May be overridden for alternate string representations.

Overrides:

writeString in class GenericDatumWriter<T>

Throws:

IOException

writeRecord

protected void writeRecord(Schema schema,
                           Object datum,
                           Encoder out)
                    throws IOException

Description copied from class: GenericDatumWriter

Called to write a record. May be overridden for alternate record representations.

Overrides:

writeRecord in class GenericDatumWriter<T>

Throws:

IOException

writeField

protected void writeField(Object datum,
                          Schema.Field f,
                          Encoder out,
                          Object state)
                   throws IOException

Description copied from class: GenericDatumWriter

Called to write a single field of a record. May be overridden for more efficient or alternate implementations.

Overrides:

writeField in class GenericDatumWriter<T>

Throws:

IOException