Avro::IO::Decoder Interface Reference

Decoder is used to decode Avro data on a stream. There are methods to read the Avro types on the stream. There are also methods to skip items, which are usually more efficient than reading, on the stream. More...

Inheritance diagram for Avro::IO::Decoder:

List of all members.

Public Member Functions
void	ReadNull ()
	Reads a null Avro type.
bool	ReadBoolean ()
	Read a boolean Avro type.
int	ReadInt ()
	Reads an int Avro type.
long	ReadLong ()
	Reads a long Avro type.
float	ReadFloat ()
	Reads a float Avro type.
double	ReadDouble ()
	Reads a double Avro type.
byte[]	ReadBytes ()
	Reads the bytes Avro type.
string	ReadString ()
	Reads a string Avro type.
int	ReadEnum ()
	Reads an enum AvroType.
long	ReadArrayStart ()
	Starts reading the array Avro type. This, together with ReadArrayNext() is used to read the items from Avro array. This returns the number of entries in the initial chunk. After consuming the chunk, the client should call ReadArrayNext() to get the number of entries in the next chunk. The client should repeat the procedure until there are no more entries in the array.
long	ReadArrayNext ()
	See ReadArrayStart().
long	ReadMapStart ()
	Starts reading the map Avro type. This, together with ReadMapNext() is used to read the entries from Avro map. This returns the number of entries in the initial chunk. After consuming the chunk, the client should call ReadMapNext() to get the number of entriess in the next chunk. The client should repeat the procedure until there are no more entries in the array. for (int n = decoder.ReadMapStart(); n > 0; n = decoder.ReadMapNext()) { Read one map entry. }.
long	ReadMapNext ()
	See ReadMapStart().
int	ReadUnionIndex ()
	Reads the index, which determines the type in an union Avro type.
void	ReadFixed (byte[] buffer)
	A convenience method for ReadFixed(buffer, 0, buffer.Length);.
void	ReadFixed (byte[] buffer, int start, int length)
	Read a Fixed Avro type of length.
void	SkipNull ()
	Skips a null Avro type on the stream.
void	SkipBoolean ()
	Skips a boolean Avro type on the stream.
void	SkipInt ()
	Skips a int Avro type on the stream.
void	SkipLong ()
	Skips a long Avro type on the stream.
void	SkipFloat ()
	Skips a float Avro type on the stream.
void	SkipDouble ()
	Skips a double Avro type on the stream.
void	SkipBytes ()
	Skips a bytes Avro type on the stream.
void	SkipString ()
	Skips a string Avro type on the stream.
void	SkipEnum ()
void	SkipUnionIndex ()
void	SkipFixed (int len)

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Detailed Description

Decoder is used to decode Avro data on a stream. There are methods to read the Avro types on the stream. There are also methods to skip items, which are usually more efficient than reading, on the stream.

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Member Function Documentation

long Avro::IO::Decoder::ReadArrayNext

(

)

See ReadArrayStart().

Returns:

The number of array entries in the next chunk, 0 if there are no more entries.

Implemented in Avro::IO::BinaryDecoder.

long Avro::IO::Decoder::ReadArrayStart

(

)

Starts reading the array Avro type. This, together with ReadArrayNext() is used to read the items from Avro array. This returns the number of entries in the initial chunk. After consuming the chunk, the client should call ReadArrayNext() to get the number of entries in the next chunk. The client should repeat the procedure until there are no more entries in the array.

for (int n = decoder.ReadArrayStart(); n > 0; n = decoder.ReadArrayNext()) { Read one array entry. }

Returns:

The number of entries in the initial chunk, 0 if the array is empty.

Implemented in Avro::IO::BinaryDecoder.

bool Avro::IO::Decoder::ReadBoolean

(

)

Read a boolean Avro type.

Returns:

The boolean just read

Implemented in Avro::IO::BinaryDecoder.

byte [] Avro::IO::Decoder::ReadBytes

(

)

Reads the bytes Avro type.

Returns:

The bytes just read

Implemented in Avro::IO::BinaryDecoder.

double Avro::IO::Decoder::ReadDouble

(

)

Reads a double Avro type.

Returns:

The double just read

Implemented in Avro::IO::BinaryDecoder.

int Avro::IO::Decoder::ReadEnum

(

)

Reads an enum AvroType.

Returns:

The enum just read

Implemented in Avro::IO::BinaryDecoder.

void Avro::IO::Decoder::ReadFixed	(	byte[]	buffer,
		int	start,
		int	length
	)

Read a Fixed Avro type of length.

Parameters:

buffer	Buffer to read into
start	Starting position of buffer to read into
length	Number of bytes to read

Implemented in Avro::IO::BinaryDecoder.

void Avro::IO::Decoder::ReadFixed

(

byte[]

buffer

)

A convenience method for ReadFixed(buffer, 0, buffer.Length);.

Parameters:

buffer

The buffer to read into.

Implemented in Avro::IO::BinaryDecoder.

float Avro::IO::Decoder::ReadFloat

(

)

Reads a float Avro type.

Returns:

The float just read

Implemented in Avro::IO::BinaryDecoder.

int Avro::IO::Decoder::ReadInt

(

)

Reads an int Avro type.

Returns:

The int just read

Implemented in Avro::IO::BinaryDecoder.

long Avro::IO::Decoder::ReadLong

(

)

Reads a long Avro type.

Returns:

The long just read

Implemented in Avro::IO::BinaryDecoder.

long Avro::IO::Decoder::ReadMapNext

(

)

See ReadMapStart().

Returns:

The number of map entries in the next chunk, 0 if there are no more entries.

Implemented in Avro::IO::BinaryDecoder.

long Avro::IO::Decoder::ReadMapStart

(

)

Starts reading the map Avro type. This, together with ReadMapNext() is used to read the entries from Avro map. This returns the number of entries in the initial chunk. After consuming the chunk, the client should call ReadMapNext() to get the number of entriess in the next chunk. The client should repeat the procedure until there are no more entries in the array. for (int n = decoder.ReadMapStart(); n > 0; n = decoder.ReadMapNext()) { Read one map entry. }.

Returns:

The number of entries in the initial chunk, 0 if the map is empty.

Implemented in Avro::IO::BinaryDecoder.

void Avro::IO::Decoder::ReadNull

(

)

Reads a null Avro type.

Implemented in Avro::IO::BinaryDecoder.

string Avro::IO::Decoder::ReadString

(

)

Reads a string Avro type.

Returns:

The string just read

Implemented in Avro::IO::BinaryDecoder.

int Avro::IO::Decoder::ReadUnionIndex

(

)

Reads the index, which determines the type in an union Avro type.

Returns:

The index of the type within the union.

Implemented in Avro::IO::BinaryDecoder.

void Avro::IO::Decoder::SkipBoolean

(

)

Skips a boolean Avro type on the stream.

Implemented in Avro::IO::BinaryDecoder.

void Avro::IO::Decoder::SkipBytes

(

)

Skips a bytes Avro type on the stream.

Implemented in Avro::IO::BinaryDecoder.

void Avro::IO::Decoder::SkipDouble

(

)

Skips a double Avro type on the stream.

Implemented in Avro::IO::BinaryDecoder.

void Avro::IO::Decoder::SkipFloat

(

)

Skips a float Avro type on the stream.

Implemented in Avro::IO::BinaryDecoder.

void Avro::IO::Decoder::SkipInt

(

)

Skips a int Avro type on the stream.

Implemented in Avro::IO::BinaryDecoder.

void Avro::IO::Decoder::SkipLong

(

)

Skips a long Avro type on the stream.

Implemented in Avro::IO::BinaryDecoder.

void Avro::IO::Decoder::SkipNull

(

)

Skips a null Avro type on the stream.

Implemented in Avro::IO::BinaryDecoder.

void Avro::IO::Decoder::SkipString

(

)

Skips a string Avro type on the stream.

Implemented in Avro::IO::BinaryDecoder.

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

• src/apache/main/IO/Decoder.cs