Avro.Generic.GenericReader< T > Class Template Reference

A general purpose reader of data from avro streams. This can optionally resolve if the reader's and writer's schemas are different. This class is a wrapper around DefaultReader and offers a little more type safety. The default reader has the flexibility to return any type of object for each read call because the Read() method is generic. This class on the other hand can only return a single type because the type is a parameter to the class. Any user defined extension should, however, be done to DefaultReader. This class is sealed. More...

Inheritance diagram for Avro.Generic.GenericReader< T >:

List of all members.

Public Member Functions
	GenericReader (Schema writerSchema, Schema readerSchema)
	Constructs a generic reader for the given schemas using the DefaultReader. If the reader's and writer's schemas are different this class performs the resolution.
	GenericReader (DefaultReader reader)
	Constructs a generic reader by directly using the given DefaultReader.
T	Read (T reuse, Decoder d)
	Read a datum. Traverse the schema, depth-first, reading all leaf values in the schema into a datum that is returned. If the provided datum is non-null it may be reused and returned.
Properties
Schema	WriterSchema [get]
Schema	ReaderSchema [get]

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Detailed Description

template<T>
class Avro::Generic::GenericReader< T >

A general purpose reader of data from avro streams. This can optionally resolve if the reader's and writer's schemas are different. This class is a wrapper around DefaultReader and offers a little more type safety. The default reader has the flexibility to return any type of object for each read call because the Read() method is generic. This class on the other hand can only return a single type because the type is a parameter to the class. Any user defined extension should, however, be done to DefaultReader. This class is sealed.

Template Parameters:

T

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Member Function Documentation

template<T >

Avro.Generic.GenericReader< T >.GenericReader	(	Schema	writerSchema,
		Schema	readerSchema
	)		[inline]

Constructs a generic reader for the given schemas using the DefaultReader. If the reader's and writer's schemas are different this class performs the resolution.

Parameters:

writerSchema	The schema used while generating the data
readerSchema	The schema desired by the reader

template<T >

Avro.Generic.GenericReader< T >.GenericReader

(

DefaultReader

reader

)

[inline]

Constructs a generic reader by directly using the given DefaultReader.

Parameters:

reader

The actual reader to use

template<T >

T Avro.Generic.GenericReader< T >.Read	(	T	reuse,
		Decoder	decoder
	)		[inline]

Read a datum. Traverse the schema, depth-first, reading all leaf values in the schema into a datum that is returned. If the provided datum is non-null it may be reused and returned.

Implements Avro.Generic.DatumReader< T >.

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The documentation for this class was generated from the following file:

• src/apache/main/Generic/GenericReader.cs