Decoder is an interface implemented by every decoder capable of decoding Avro data. More...
#include <Decoder.hh>
Public Member Functions | |
| virtual void | init (InputStream &is)=0 |
| All future decoding will come from is, which should be valid until replaced by another call to init() or this Decoder is destructed. | |
| virtual void | decodeNull ()=0 |
| Decodes a null from the current stream. | |
| virtual bool | decodeBool ()=0 |
| Decodes a bool from the current stream. | |
| virtual int32_t | decodeInt ()=0 |
| Decodes a 32-bit int from the current stream. | |
| virtual int64_t | decodeLong ()=0 |
| Decodes a 64-bit signed int from the current stream. | |
| virtual float | decodeFloat ()=0 |
| Decodes a single-precision floating point number from current stream. | |
| virtual double | decodeDouble ()=0 |
| Decodes a double-precision floating point number from current stream. | |
| std::string | decodeString () |
| Decodes a UTF-8 string from the current stream. | |
| virtual void | decodeString (std::string &value)=0 |
| Decodes a UTF-8 string from the stream and assigns it to value. | |
| virtual void | skipString ()=0 |
| Skips a string on the current stream. | |
| std::vector< uint8_t > | decodeBytes () |
| Decodes arbitray binary data from the current stream. | |
| virtual void | decodeBytes (std::vector< uint8_t > &value)=0 |
| Decodes arbitray binary data from the current stream and puts it in value. | |
| virtual void | skipBytes ()=0 |
| Skips bytes on the current stream. | |
| std::vector< uint8_t > | decodeFixed (size_t n) |
| Decodes fixed length binary from the current stream. | |
| virtual void | decodeFixed (size_t n, std::vector< uint8_t > &value)=0 |
| Decodes a fixed from the current stream. | |
| virtual void | skipFixed (size_t n)=0 |
| Skips fixed length binary on the current stream. | |
| virtual size_t | decodeEnum ()=0 |
| Decodes enum from the current stream. | |
| virtual size_t | arrayStart ()=0 |
| Start decoding an array. Returns the number of entries in first chunk. | |
| virtual size_t | arrayNext ()=0 |
| Returns the number of entries in next chunk. 0 if last. | |
| virtual size_t | skipArray ()=0 |
| Tries to skip an array. | |
| virtual size_t | mapStart ()=0 |
| Start decoding a map. Returns the number of entries in first chunk. | |
| virtual size_t | mapNext ()=0 |
| Returns the number of entries in next chunk. 0 if last. | |
| virtual size_t | skipMap ()=0 |
| Tries to skip a map. | |
| virtual size_t | decodeUnionIndex ()=0 |
| Decodes a branch of a union. The actual value is to follow. | |
Detailed Description
Decoder is an interface implemented by every decoder capable of decoding Avro data.
Member Function Documentation
| virtual void avro::Decoder::decodeBytes | ( | std::vector< uint8_t > & | value | ) | [pure virtual] |
Decodes arbitray binary data from the current stream and puts it in value.
| std::vector<uint8_t> avro::Decoder::decodeFixed | ( | size_t | n | ) | [inline] |
Decodes fixed length binary from the current stream.
- Parameters:
-
[in] n The size (byte count) of the fixed being read.
- Returns:
- The fixed data that has been read. The size of the returned vector is guaranteed to be equal to
n.
Referenced by avro::codec_traits< boost::array< uint8_t, N > >::decode().
| virtual void avro::Decoder::decodeFixed | ( | size_t | n, | |
| std::vector< uint8_t > & | value | |||
| ) | [pure virtual] |
Decodes a fixed from the current stream.
- Parameters:
-
[in] n The size (byte count) of the fixed being read. [out] value The value that receives the fixed. The vector will be size-adjusted based on the fixed's size.
| virtual void avro::Decoder::init | ( | InputStream & | is | ) | [pure virtual] |
| virtual size_t avro::Decoder::skipArray | ( | ) | [pure virtual] |
Tries to skip an array.
If it can, it returns 0. Otherwise it returns the number of elements to be skipped. The client should skip the individual items. In such cases, skipArray is identical to arrayStart.
| virtual size_t avro::Decoder::skipMap | ( | ) | [pure virtual] |
Tries to skip a map.
If it can, it returns 0. Otherwise it returns the number of elements to be skipped. The client should skip the individual items. In such cases, skipMap is identical to mapStart.
The documentation for this class was generated from the following file:
- api/Decoder.hh
Generated on Fri Mar 2 2012 14:27:17 for Avro C++ by
1.7.1