Avro.Generic.GenericDatumReader< T > Class Template Reference

PreresolvingDatumReader<T> for reading data to GenericRecord classes or primitives. For more information about performance considerations for choosing this implementation. More...

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

Classes
class	GenericRecordAccess

Public Member Functions
	GenericDatumReader (Schema writerSchema, Schema readerSchema)
	Initializes a new instance of the GenericDatumReader<T> class.
Public Member Functions inherited from Avro.Generic.PreresolvingDatumReader< T >
T	Read (T reuse, Decoder decoder)
	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. Parameters reuse Optional object to deserialize the datum into. May be null. decoder Decoder to read data from. Returns Deserialized datum.

Protected Member Functions
override bool	IsReusable (Schema.Type tag)
	Indicates if it's possible to reuse an object of the specified type. Generally false for immutable objects like int, long, string, etc but may differ between the Specific and Generic implementations. Used to avoid retrieving the existing value if it's not reusable. Parameters tag Schema type to test for reusability.
override ArrayAccess	GetArrayAccess (ArraySchema readerSchema)
override EnumAccess	GetEnumAccess (EnumSchema readerSchema)
override MapAccess	GetMapAccess (MapSchema readerSchema)
override RecordAccess	GetRecordAccess (RecordSchema readerSchema)
override FixedAccess	GetFixedAccess (FixedSchema readerSchema)
Protected Member Functions inherited from Avro.Generic.PreresolvingDatumReader< T >
delegate object	ReadItem (object reuse, Decoder dec)
	Defines the signature for a function that reads an item from a decoder.
	PreresolvingDatumReader (Schema writerSchema, Schema readerSchema)
	Initializes a new instance of the PreresolvingDatumReader<T> class.
ArrayAccess	GetArrayAccess (ArraySchema readerSchema)
	Returns an ArrayAccess implementation for the given schema.
EnumAccess	GetEnumAccess (EnumSchema readerSchema)
	Returns an EnumAccess implementation for the given schema.
MapAccess	GetMapAccess (MapSchema readerSchema)
	Returns a MapAccess implementation for the given schema.
RecordAccess	GetRecordAccess (RecordSchema readerSchema)
	Returns a RecordAccess implementation for the given schema.
FixedAccess	GetFixedAccess (FixedSchema readerSchema)
	Returns a FixedAccess implementation for the given schema.

Additional Inherited Members
Static Protected Member Functions inherited from Avro.Generic.PreresolvingDatumReader< T >
static Schema	FindBranch (UnionSchema us, Schema s)
	Finds the branch of the union schema associated with the given schema.
Properties inherited from Avro.Generic.PreresolvingDatumReader< T >
Schema	ReaderSchema [get]
	Schema used to read the data.
Schema	WriterSchema [get]
	Schema that was used to write the data.
Properties inherited from Avro.Generic.DatumReader< T >

Detailed Description

PreresolvingDatumReader<T> for reading data to GenericRecord classes or primitives. For more information about performance considerations for choosing this implementation.

Template Parameters

T	Type to deserialize data into.

Constructor & Destructor Documentation

GenericDatumReader()

Avro.Generic.GenericDatumReader< T >.GenericDatumReader ( Schema  writerSchema, Schema  readerSchema  )

inline

Initializes a new instance of the GenericDatumReader<T> class.

Parameters

writerSchema	Schema that was used to write the data.
readerSchema	Schema to use to read the data.

Member Function Documentation

IsReusable()

override bool Avro.Generic.GenericDatumReader< T >.IsReusable ( Schema::Type  tag )

inlineprotectedvirtual

Indicates if it's possible to reuse an object of the specified type. Generally false for immutable objects like int, long, string, etc but may differ between the Specific and Generic implementations. Used to avoid retrieving the existing value if it's not reusable.

Parameters

tag	Schema type to test for reusability.

Reimplemented from Avro.Generic.PreresolvingDatumReader< T >.

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

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