Package org.apache.avro.specific

Generate specific Java classes for schemas and protocols.

See: Description

Interface Summary

Interface	Description
SpecificData.SchemaConstructable	Tag interface that indicates that a class has a one-argument constructor that accepts a Schema.
SpecificRecord	Implemented by generated record classes.

Class Summary

Class	Description
SpecificData	Utilities for generated Java classes and interfaces.
SpecificDatumReader<T>	DatumReader for generated Java classes.
SpecificDatumWriter<T>	DatumWriter for generated Java classes.
SpecificErrorBuilderBase<T extends SpecificExceptionBase>	Abstract base class for specific ErrorBuilder implementations.
SpecificFixed	Base class for generated fixed-sized data classes.
SpecificRecordBase	Base class for generated record classes.
SpecificRecordBuilderBase<T extends SpecificRecord>	Abstract base class for specific RecordBuilder implementations.

Exception Summary

Exception	Description
SpecificExceptionBase	Base class for specific exceptions.

Annotation Types Summary

Annotation Type	Description
AvroGenerated	Indicates that an annotated class is an Avro generated class.
FixedSize	Declares the size of implementations of GenericFixed.

Package org.apache.avro.specific Description

Generate specific Java classes for schemas and protocols.

This API is recommended for most RPC uses and for data applications that always use the same datatypes, i.e., whose schemas are known at compile time. For data applications that accept dynamic datatypes the generic API is recommended.

Avro types are mapped to Java as follows:

• Record, enum, and fixed schemas generate Java class definitions.
• If a Conversion instance is available for the related logical type, the value will be mapped to the object returned by that Conversion. The logical type conversions for date, time-millis, timestamp-millis and decimal are pre-defined in the class SpecificCompiler.
• All other types are mapped as in the generic API.

Note that when a generated class is not found corresponding to a record, enum or fixed schema, a generic representation is used. This permits generated classes to be nested within generic data structures.