org.apache.avro.specific
Class SpecificData

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

Direct Known Subclasses:

ReflectData

public class SpecificData
extends GenericData

Utilities for generated Java classes and interfaces.

Nested Class Summary

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 the schema for a Java type.
static SpecificData	get() Return the singleton instance.
Class	getClass(Schema schema) Return the class that implements a schema.
String	getClassName(Schema schema) Returns the Java class name indicated by a schema's name and namespace.
Protocol	getProtocol(Class iface) Return the protocol for a Java interface.
protected Schema	getRecordSchema(Object record) Called to obtain the schema of a record.
Schema	getSchema(Type type) Find the schema for a Java type.
protected boolean	isEnum(Object datum) Called by the default implementation of GenericData.instanceOf(org.apache.avro.Schema, java.lang.Object).
protected boolean	isRecord(Object datum) Called by the default implementation of GenericData.instanceOf(org.apache.avro.Schema, java.lang.Object).
boolean	validate(Schema schema, Object datum) Returns true if a Java datum matches a schema.

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

hashCode, hashCodeAdd, induce, instanceOf, isArray, isBytes, isFixed, isMap, isString, resolveUnion, toString, 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.

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 GenericData

getRecordSchema

protected Schema getRecordSchema(Object record)

Description copied from class: GenericData

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

Overrides:

getRecordSchema in class GenericData

isEnum

protected boolean isEnum(Object datum)

Description copied from class: GenericData

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

Overrides:

isEnum in class GenericData

validate

public boolean validate(Schema schema,
                        Object datum)

Description copied from class: GenericData

Returns true if a Java datum matches a schema.

Overrides:

validate in class GenericData

getClass

public Class getClass(Schema schema)

Return the class that implements a schema.

getClassName

public String getClassName(Schema schema)

Returns the Java class name indicated by a schema's name and namespace.

getSchema

public Schema getSchema(Type type)

Find the schema for a Java type.

createSchema

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

Create the schema for a Java type.

getProtocol

public Protocol getProtocol(Class iface)

Return the protocol for a Java interface.

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