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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, int8_t *values) override
 
- Public Member Functions inherited from foreign_storage::ParquetEncoder
 ParquetEncoder (Data_Namespace::AbstractBuffer *buffer)
 
virtual ~ParquetEncoder ()=default
 
virtual std::shared_ptr
< ChunkMetadata
getRowGroupMetadata (const parquet::RowGroupMetaData *group_metadata, const int parquet_column_index, const SQLTypeInfo &column_type)
 

Private Member Functions

void writeInitialOffsetIfApplicable ()
 

Private Attributes

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

Additional Inherited Members

- Static Protected Member Functions inherited from foreign_storage::ParquetEncoder
static std::shared_ptr
< ChunkMetadata
createMetadata (const SQLTypeInfo &column_type)
 
static void throwNotNullViolation (const std::string &parquet_column_name)
 
static void validateNullCount (const std::string &parquet_column_name, int64_t null_count, const SQLTypeInfo &column_type)
 
- Protected Attributes inherited from foreign_storage::ParquetEncoder
Data_Namespace::AbstractBufferbuffer_
 

Detailed Description

Definition at line 27 of file ParquetStringNoneEncoder.h.

Constructor & Destructor Documentation

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:1075

Member Function Documentation

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,
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_, i, index_buffer_, Data_Namespace::AbstractBuffer::reserve(), Data_Namespace::AbstractBuffer::size(), and writeInitialOffsetIfApplicable().

40  {
41  CHECK(levels_read > 0);
43 
44  auto parquet_data_ptr = reinterpret_cast<const parquet::ByteArray*>(values);
45  auto offsets = reinterpret_cast<StringOffsetT*>(encode_buffer_.data());
46  auto last_offset = buffer_->size();
47 
48  size_t total_len = 0;
49  for (int64_t i = 0, j = 0; i < levels_read; ++i) {
50  if (def_levels[i]) {
51  CHECK(j < values_read);
52  auto& byte_array = parquet_data_ptr[j++];
53  total_len += byte_array.len;
54  }
55  offsets[i] = last_offset + total_len;
56  }
57  index_buffer_->append(encode_buffer_.data(), levels_read * sizeof(StringOffsetT));
58 
59  encode_buffer_.resize(std::max<size_t>(total_len, encode_buffer_.size()));
60  buffer_->reserve(total_len);
61  total_len = 0;
62  for (int64_t i = 0, j = 0; i < levels_read; ++i) {
63  if (def_levels[i]) {
64  CHECK(j < values_read);
65  auto& byte_array = parquet_data_ptr[j++];
66  memcpy(encode_buffer_.data() + total_len, byte_array.ptr, byte_array.len);
67  total_len += byte_array.len;
68  }
69  }
70  buffer_->append(encode_buffer_.data(), total_len);
71  }
Data_Namespace::AbstractBuffer * index_buffer_
int32_t StringOffsetT
Definition: sqltypes.h:1075
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:209
Data_Namespace::AbstractBuffer * buffer_
virtual void reserve(size_t num_bytes)=0

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void foreign_storage::ParquetStringNoneEncoder::writeInitialOffsetIfApplicable ( )
inlineprivate

Definition at line 74 of file ParquetStringNoneEncoder.h.

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

Referenced by appendData().

74  {
75  if (!index_buffer_->size()) {
76  // write the initial starting offset
77  StringOffsetT zero = 0;
78  index_buffer_->append(reinterpret_cast<int8_t*>(&zero), sizeof(StringOffsetT));
79  }
80  }
Data_Namespace::AbstractBuffer * index_buffer_
int32_t StringOffsetT
Definition: sqltypes.h:1075
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

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

Definition at line 83 of file ParquetStringNoneEncoder.h.

Referenced by appendData().

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

Definition at line 82 of file ParquetStringNoneEncoder.h.

Referenced by appendData(), and writeInitialOffsetIfApplicable().


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