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foreign_storage::ParquetStringNoneEncoder Class Reference

#include <ParquetStringNoneEncoder.h>

+ Inheritance diagram for foreign_storage::ParquetStringNoneEncoder:
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Public Member Functions

 ParquetStringNoneEncoder (Data_Namespace::AbstractBuffer *buffer, Data_Namespace::AbstractBuffer *index_buffer)
 
void appendData (const int16_t *def_levels, const int16_t *rep_levels, const int64_t values_read, const int64_t levels_read, const bool is_last_batch, int8_t *values) override
 
- Public Member Functions inherited from foreign_storage::ParquetEncoder
 ParquetEncoder (Data_Namespace::AbstractBuffer *buffer)
 
virtual ~ParquetEncoder ()=default
 

Private Member Functions

void writeInitialOffsetIfApplicable ()
 

Private Attributes

Data_Namespace::AbstractBufferindex_buffer_
 
std::vector< int8_t > encode_buffer_
 

Additional Inherited Members

- Protected Attributes inherited from foreign_storage::ParquetEncoder
Data_Namespace::AbstractBufferbuffer_
 

Detailed Description

Definition at line 27 of file ParquetStringNoneEncoder.h.

Constructor & Destructor Documentation

◆ ParquetStringNoneEncoder()

foreign_storage::ParquetStringNoneEncoder::ParquetStringNoneEncoder ( Data_Namespace::AbstractBuffer buffer,
Data_Namespace::AbstractBuffer index_buffer 
)
inline

Definition at line 29 of file ParquetStringNoneEncoder.h.

31  : ParquetEncoder(buffer)
32  , index_buffer_(index_buffer)
34  sizeof(StringOffsetT)) {}
ParquetEncoder(Data_Namespace::AbstractBuffer *buffer)
Data_Namespace::AbstractBuffer * index_buffer_
int32_t StringOffsetT
Definition: sqltypes.h:868

Member Function Documentation

◆ appendData()

void foreign_storage::ParquetStringNoneEncoder::appendData ( const int16_t *  def_levels,
const int16_t *  rep_levels,
const int64_t  values_read,
const int64_t  levels_read,
const bool  is_last_batch,
int8_t *  values 
)
inlineoverridevirtual

Implements foreign_storage::ParquetEncoder.

Definition at line 36 of file ParquetStringNoneEncoder.h.

References Data_Namespace::AbstractBuffer::append(), foreign_storage::ParquetEncoder::buffer_, CHECK, encode_buffer_, index_buffer_, Data_Namespace::AbstractBuffer::reserve(), Data_Namespace::AbstractBuffer::size(), and writeInitialOffsetIfApplicable().

41  {
42  CHECK(levels_read > 0);
44 
45  auto parquet_data_ptr = reinterpret_cast<const parquet::ByteArray*>(values);
46  auto offsets = reinterpret_cast<StringOffsetT*>(encode_buffer_.data());
47  auto last_offset = buffer_->size();
48 
49  size_t total_len = 0;
50  for (int64_t i = 0, j = 0; i < levels_read; ++i) {
51  if (def_levels[i]) {
52  CHECK(j < values_read);
53  auto& byte_array = parquet_data_ptr[j++];
54  total_len += byte_array.len;
55  }
56  offsets[i] = last_offset + total_len;
57  }
58  index_buffer_->append(encode_buffer_.data(), levels_read * sizeof(StringOffsetT));
59 
60  encode_buffer_.resize(std::max<size_t>(total_len, encode_buffer_.size()));
61  buffer_->reserve(total_len);
62  total_len = 0;
63  for (int64_t i = 0, j = 0; i < levels_read; ++i) {
64  if (def_levels[i]) {
65  CHECK(j < values_read);
66  auto& byte_array = parquet_data_ptr[j++];
67  memcpy(encode_buffer_.data() + total_len, byte_array.ptr, byte_array.len);
68  total_len += byte_array.len;
69  }
70  }
71  buffer_->append(encode_buffer_.data(), total_len);
72  }
Data_Namespace::AbstractBuffer * index_buffer_
int32_t StringOffsetT
Definition: sqltypes.h:868
virtual void append(int8_t *src, const size_t num_bytes, const MemoryLevel src_buffer_type=CPU_LEVEL, const int device_id=-1)=0
#define CHECK(condition)
Definition: Logger.h:197
Data_Namespace::AbstractBuffer * buffer_
virtual void reserve(size_t num_bytes)=0
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◆ writeInitialOffsetIfApplicable()

void foreign_storage::ParquetStringNoneEncoder::writeInitialOffsetIfApplicable ( )
inlineprivate

Definition at line 75 of file ParquetStringNoneEncoder.h.

References Data_Namespace::AbstractBuffer::append(), index_buffer_, and Data_Namespace::AbstractBuffer::size().

Referenced by appendData().

75  {
76  if (!index_buffer_->size()) {
77  // write the initial starting offset
78  StringOffsetT zero = 0;
79  index_buffer_->append(reinterpret_cast<int8_t*>(&zero), sizeof(StringOffsetT));
80  }
81  }
Data_Namespace::AbstractBuffer * index_buffer_
int32_t StringOffsetT
Definition: sqltypes.h:868
virtual void append(int8_t *src, const size_t num_bytes, const MemoryLevel src_buffer_type=CPU_LEVEL, const int device_id=-1)=0
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Member Data Documentation

◆ encode_buffer_

std::vector<int8_t> foreign_storage::ParquetStringNoneEncoder::encode_buffer_
private

Definition at line 84 of file ParquetStringNoneEncoder.h.

Referenced by appendData().

◆ index_buffer_

Data_Namespace::AbstractBuffer* foreign_storage::ParquetStringNoneEncoder::index_buffer_
private

Definition at line 83 of file ParquetStringNoneEncoder.h.

Referenced by appendData(), and writeInitialOffsetIfApplicable().


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