org.apache.avro.specific
Class SpecificData

java.lang.Object
  org.apache.avro.generic.GenericData
      org.apache.avro.reflect.ReflectData
          org.apache.avro.specific.SpecificData

public class SpecificData
extends ReflectData

Utilities for generated Java classes and interfaces.

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.avro.reflect.ReflectData

ReflectData.AllowNull

Nested classes/interfaces inherited from class org.apache.avro.generic.GenericData

GenericData.Array<T>, GenericData.Fixed, GenericData.Record

Constructor Summary

protected

SpecificData()

Method Summary

int	compare(Object o1, Object o2, Schema s) Compare objects according to their schema.
protected Schema	createSchema(Type type, Map<String,Schema> names) Create a schema for a type and it's fields.
static SpecificData	get() Return the singleton instance.
protected Schema	getRecordSchema(Object record) Called to obtain the schema of a record.
protected boolean	isRecord(Object datum) Called by the default implementation of GenericData.instanceOf(org.apache.avro.Schema, java.lang.Object).

Methods inherited from class org.apache.avro.reflect.ReflectData

createFieldSchema, getClass, getClassName, getProtocol, getSchema, isEnum, validate

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

induce, instanceOf, isArray, isBytes, isFixed, isMap, isString, resolveUnion, toString

Methods inherited from class java.lang.Object

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

Constructor Detail

SpecificData

protected SpecificData()

Method Detail

get

public static SpecificData get()

Return the singleton instance.

createSchema

protected Schema createSchema(Type type,
                              Map<String,Schema> names)

Description copied from class: ReflectData

Create a schema for a type and it's fields. Note that by design only fields of the direct class, not it's super classes, are used for creating the schema. Also, fields are not permitted to be null.

Overrides:

createSchema in class ReflectData

isRecord

protected boolean isRecord(Object datum)

Description copied from class: GenericData

Called by the default implementation of GenericData.instanceOf(org.apache.avro.Schema, java.lang.Object).

Overrides:

isRecord in class ReflectData

getRecordSchema

protected Schema getRecordSchema(Object record)

Description copied from class: GenericData

Called to obtain the schema of a record. By default calls {GenericRecord#getSchema(). May be overridden for alternate record representations.

Overrides:

getRecordSchema in class ReflectData

compare

public int compare(Object o1,
                   Object o2,
                   Schema s)

Description copied from class: GenericData

Compare objects according to their schema. If equal, return zero. If greater-than, return 1, if less than return -1. Order is consistent with that of BinaryData.compare(byte[], int, byte[], int, Schema).

Overrides:

compare in class GenericData