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foreign_storage::ParquetStringEncoder< V > Class Template Reference

#include <ParquetStringEncoder.h>

+ Inheritance diagram for foreign_storage::ParquetStringEncoder< V >:
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Public Member Functions

 ParquetStringEncoder (Data_Namespace::AbstractBuffer *buffer, StringDictionary *string_dictionary, ChunkMetadata *chunk_metadata)
 
void validateAndAppendData (const int16_t *def_levels, const int16_t *rep_levels, const int64_t values_read, const int64_t levels_read, int8_t *values, const SQLTypeInfo &column_type, InvalidRowGroupIndices &invalid_indices) override
 
void appendDataTrackErrors (const int16_t *def_levels, const int16_t *rep_levels, const int64_t values_read, const int64_t levels_read, int8_t *values) override
 
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
 
void encodeAndCopyContiguous (const int8_t *parquet_data_bytes, int8_t *omnisci_data_bytes, const size_t num_elements) override
 
void encodeAndCopy (const int8_t *parquet_data_bytes, int8_t *omnisci_data_bytes) override
 
std::shared_ptr< ChunkMetadatagetRowGroupMetadata (const parquet::RowGroupMetaData *group_metadata, const int parquet_column_index, const SQLTypeInfo &column_type) override
 
- Public Member Functions inherited from foreign_storage::TypedParquetInPlaceEncoder< V, V >
 TypedParquetInPlaceEncoder (Data_Namespace::AbstractBuffer *buffer, const ColumnDescriptor *column_desciptor, const parquet::ColumnDescriptor *parquet_column_descriptor)
 
 TypedParquetInPlaceEncoder (Data_Namespace::AbstractBuffer *buffer, const size_t omnisci_data_type_byte_size, const size_t parquet_data_type_byte_size)
 
void validate (const int8_t *parquet_data, const int64_t j, const SQLTypeInfo &column_type) const override
 
std::string integralTypeToString (const V &element) const
 
bool isIntegralType (const SQLTypeInfo &type) const
 
std::string elementToString (const V &element) const
 
std::string encodedDataToString (const int8_t *bytes) const override
 
void setDetectBufferConverterType ()
 
void validateUsingEncodersColumnType (const int8_t *parquet_data, const int64_t j) const override
 
void reserve (const size_t num_elements) override
 
void appendDataTrackErrors (const int16_t *def_levels, const int16_t *rep_levels, const int64_t values_read, const int64_t levels_read, int8_t *values) override
 
void validateAndAppendData (const int16_t *def_levels, const int16_t *rep_levels, const int64_t values_read, const int64_t levels_read, int8_t *values, const SQLTypeInfo &column_type, InvalidRowGroupIndices &invalid_indices) override
 
void eraseInvalidIndicesInBuffer (const InvalidRowGroupIndices &invalid_indices) override
 
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
 
void encodeAndCopyContiguous (const int8_t *parquet_data_bytes, int8_t *omnisci_data_bytes, const size_t num_elements) override
 
void setNull (int8_t *omnisci_data_bytes) override
 
void copy (const int8_t *omnisci_data_bytes_source, int8_t *omnisci_data_bytes_destination) override
 
std::shared_ptr< ChunkMetadatagetRowGroupMetadata (const parquet::RowGroupMetaData *group_metadata, const int parquet_column_index, const SQLTypeInfo &column_type) override
 
- Public Member Functions inherited from foreign_storage::ParquetInPlaceEncoder
 ParquetInPlaceEncoder (Data_Namespace::AbstractBuffer *buffer, const size_t omnisci_data_type_byte_size, const size_t parquet_data_type_byte_size)
 
- Public Member Functions inherited from foreign_storage::ParquetScalarEncoder
 ParquetScalarEncoder (Data_Namespace::AbstractBuffer *buffer)
 
- Public Member Functions inherited from foreign_storage::ParquetEncoder
 ParquetEncoder (Data_Namespace::AbstractBuffer *buffer)
 
virtual ~ParquetEncoder ()=default
 
RejectedRowIndices getRejectedRowIndices () const
 
virtual void disableMetadataStatsValidation ()
 
virtual void initializeErrorTracking (const SQLTypeInfo &column_type)
 

Protected Member Functions

bool encodingIsIdentityForSameTypes () const override
 
- Protected Member Functions inherited from foreign_storage::TypedParquetInPlaceEncoder< V, V >
std::pair< V, V > getUnencodedStats (std::shared_ptr< parquet::Statistics > stats) const
 

Private Member Functions

void updateMetadataStats (int64_t values_read, int8_t *values)
 

Private Attributes

StringDictionarystring_dictionary_
 
ChunkMetadatachunk_metadata_
 
std::vector< int8_t > encode_buffer_
 
min_
 
max_
 
int64_t current_batch_offset_
 
InvalidRowGroupIndicesinvalid_indices_
 

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::ParquetInPlaceEncoder
const size_t omnisci_data_type_byte_size_
 
const size_t parquet_data_type_byte_size_
 
- Protected Attributes inherited from foreign_storage::ParquetEncoder
Data_Namespace::AbstractBufferbuffer_
 
bool is_error_tracking_enabled_
 
RejectedRowIndices invalid_indices_
 
size_t current_chunk_offset_
 
SQLTypeInfo column_type_
 
bool validate_metadata_stats_
 

Detailed Description

template<typename V>
class foreign_storage::ParquetStringEncoder< V >

Definition at line 29 of file ParquetStringEncoder.h.

Constructor & Destructor Documentation

template<typename V >
foreign_storage::ParquetStringEncoder< V >::ParquetStringEncoder ( Data_Namespace::AbstractBuffer buffer,
StringDictionary string_dictionary,
ChunkMetadata chunk_metadata 
)
inline

Definition at line 31 of file ParquetStringEncoder.h.

34  : TypedParquetInPlaceEncoder<V, V>(buffer, sizeof(V), sizeof(V))
35  , string_dictionary_(string_dictionary)
36  , chunk_metadata_(chunk_metadata)
38  , min_(std::numeric_limits<V>::max())
39  , max_(std::numeric_limits<V>::lowest())
41  , invalid_indices_(nullptr) {}

Member Function Documentation

template<typename V >
void foreign_storage::ParquetStringEncoder< V >::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

Appends Parquet data to the buffer using an in-place algorithm. Any necessary transformation or validation of the data and decoding of nulls is part of appending the data. Each class inheriting from this abstract class must implement the functionality to copy, nullify and encode the data.

Parameters
def_levels- an array containing the Dremel encoding definition levels
rep_levels- an array containing the Dremel encoding repetition levels
values_read- the number of non-null values read
levels_read- the total number of values (non-null & null) that are read
values- values that are read

Note that the Parquet format encodes nulls using Dremel encoding.

Reimplemented from foreign_storage::ParquetInPlaceEncoder.

Definition at line 92 of file ParquetStringEncoder.h.

References foreign_storage::TypedParquetInPlaceEncoder< V, T, NullType >::appendData(), foreign_storage::ParquetStringEncoder< V >::encode_buffer_, and foreign_storage::ParquetStringEncoder< V >::encodeAndCopyContiguous().

Referenced by foreign_storage::ParquetStringEncoder< V >::appendDataTrackErrors(), and foreign_storage::ParquetStringEncoder< V >::validateAndAppendData().

96  {
97  encodeAndCopyContiguous(values, encode_buffer_.data(), values_read);
99  def_levels, rep_levels, values_read, levels_read, encode_buffer_.data());
100  }
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
void encodeAndCopyContiguous(const int8_t *parquet_data_bytes, int8_t *omnisci_data_bytes, const size_t num_elements) override

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template<typename V >
void foreign_storage::ParquetStringEncoder< V >::appendDataTrackErrors ( 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 67 of file ParquetStringEncoder.h.

References foreign_storage::ParquetStringEncoder< V >::appendData(), CHECK, CHECK_LT, foreign_storage::ParquetEncoder::column_type_, foreign_storage::ParquetEncoder::current_chunk_offset_, foreign_storage::ParquetEncoder::invalid_indices_, foreign_storage::ParquetEncoder::is_error_tracking_enabled_, and StringDictionary::MAX_STRLEN.

71  {
73  auto parquet_data_ptr = reinterpret_cast<const parquet::ByteArray*>(values);
74  for (int64_t i = 0, j = 0; i < levels_read; ++i) {
75  if (def_levels[i]) {
76  CHECK_LT(j, values_read);
77  auto& byte_array = parquet_data_ptr[j++];
78  if (byte_array.len > StringDictionary::MAX_STRLEN) {
80  i);
81  }
83  .get_notnull()) { // item is null for NOT NULL column
85  i);
86  }
87  }
89  appendData(def_levels, rep_levels, values_read, levels_read, values);
90  }
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
RejectedRowIndices invalid_indices_
#define CHECK_LT(x, y)
Definition: Logger.h:233
#define CHECK(condition)
Definition: Logger.h:223
static constexpr size_t MAX_STRLEN

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template<typename V >
void foreign_storage::ParquetStringEncoder< V >::encodeAndCopy ( const int8_t *  parquet_data_bytes,
int8_t *  omnisci_data_bytes 
)
inlineoverridevirtual

Implements foreign_storage::ParquetScalarEncoder.

Definition at line 124 of file ParquetStringEncoder.h.

References foreign_storage::TypedParquetInPlaceEncoder< V, T, NullType >::copy().

125  {
126  TypedParquetInPlaceEncoder<V, V>::copy(parquet_data_bytes, omnisci_data_bytes);
127  }
void copy(const int8_t *omnisci_data_bytes_source, int8_t *omnisci_data_bytes_destination) override

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template<typename V >
void foreign_storage::ParquetStringEncoder< V >::encodeAndCopyContiguous ( const int8_t *  parquet_data_bytes,
int8_t *  omnisci_data_bytes,
const size_t  num_elements 
)
inlineoverridevirtual

Implements foreign_storage::ParquetScalarEncoder.

Definition at line 102 of file ParquetStringEncoder.h.

References CHECK, StringDictionary::getOrAddBulk(), StringDictionary::MAX_STRLEN, foreign_storage::ParquetStringEncoder< V >::string_dictionary_, and foreign_storage::ParquetStringEncoder< V >::updateMetadataStats().

Referenced by foreign_storage::ParquetStringEncoder< V >::appendData().

104  {
106  auto parquet_data_ptr =
107  reinterpret_cast<const parquet::ByteArray*>(parquet_data_bytes);
108  auto omnisci_data_ptr = reinterpret_cast<V*>(omnisci_data_bytes);
109  std::vector<std::string_view> string_views;
110  string_views.reserve(num_elements);
111  for (size_t i = 0; i < num_elements; ++i) {
112  auto& byte_array = parquet_data_ptr[i];
113  if (byte_array.len <= StringDictionary::MAX_STRLEN) {
114  string_views.emplace_back(reinterpret_cast<const char*>(byte_array.ptr),
115  byte_array.len);
116  } else {
117  string_views.emplace_back(nullptr, 0);
118  }
119  }
120  string_dictionary_->getOrAddBulk(string_views, omnisci_data_ptr);
121  updateMetadataStats(num_elements, omnisci_data_bytes);
122  }
void updateMetadataStats(int64_t values_read, int8_t *values)
void getOrAddBulk(const std::vector< String > &string_vec, T *encoded_vec)
#define CHECK(condition)
Definition: Logger.h:223
static constexpr size_t MAX_STRLEN

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template<typename V >
bool foreign_storage::ParquetStringEncoder< V >::encodingIsIdentityForSameTypes ( ) const
inlineoverrideprotectedvirtual

Reimplemented from foreign_storage::TypedParquetInPlaceEncoder< V, V >.

Definition at line 142 of file ParquetStringEncoder.h.

142 { return true; }
template<typename V >
std::shared_ptr<ChunkMetadata> foreign_storage::ParquetStringEncoder< V >::getRowGroupMetadata ( const parquet::RowGroupMetaData *  group_metadata,
const int  parquet_column_index,
const SQLTypeInfo column_type 
)
inlineoverridevirtual

Reimplemented from foreign_storage::ParquetEncoder.

Definition at line 129 of file ParquetStringEncoder.h.

References foreign_storage::ParquetEncoder::getRowGroupMetadata(), and foreign_storage::ParquetInPlaceEncoder::omnisci_data_type_byte_size_.

132  {
133  auto metadata = ParquetEncoder::getRowGroupMetadata(
134  group_metadata, parquet_column_index, column_type);
135  auto column_metadata = group_metadata->ColumnChunk(parquet_column_index);
137  column_metadata->num_values();
138  return metadata;
139  }
virtual std::shared_ptr< ChunkMetadata > getRowGroupMetadata(const parquet::RowGroupMetaData *group_metadata, const int parquet_column_index, const SQLTypeInfo &column_type)

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template<typename V >
void foreign_storage::ParquetStringEncoder< V >::updateMetadataStats ( int64_t  values_read,
int8_t *  values 
)
inlineprivate

Definition at line 145 of file ParquetStringEncoder.h.

References foreign_storage::ParquetStringEncoder< V >::chunk_metadata_, ChunkMetadata::fillChunkStats(), foreign_storage::ParquetStringEncoder< V >::max_, and foreign_storage::ParquetStringEncoder< V >::min_.

Referenced by foreign_storage::ParquetStringEncoder< V >::encodeAndCopyContiguous().

145  {
146  if (!chunk_metadata_) {
147  return;
148  }
149  V* data_ptr = reinterpret_cast<V*>(values);
150  for (int64_t i = 0; i < values_read; ++i) {
151  min_ = std::min<V>(data_ptr[i], min_);
152  max_ = std::max<V>(data_ptr[i], max_);
153  }
155  }
void fillChunkStats(const T min, const T max, const bool has_nulls)
Definition: ChunkMetadata.h:74

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template<typename V >
void foreign_storage::ParquetStringEncoder< V >::validateAndAppendData ( const int16_t *  def_levels,
const int16_t *  rep_levels,
const int64_t  values_read,
const int64_t  levels_read,
int8_t *  values,
const SQLTypeInfo column_type,
InvalidRowGroupIndices invalid_indices 
)
inlineoverridevirtual

Implements foreign_storage::ParquetImportEncoder.

Definition at line 46 of file ParquetStringEncoder.h.

References foreign_storage::ParquetStringEncoder< V >::appendData(), CHECK_LT, foreign_storage::ParquetStringEncoder< V >::current_batch_offset_, and StringDictionary::MAX_STRLEN.

52  {
53  auto parquet_data_ptr = reinterpret_cast<const parquet::ByteArray*>(values);
54  for (int64_t i = 0, j = 0; i < levels_read; ++i) {
55  if (def_levels[i]) {
56  CHECK_LT(j, values_read);
57  auto& byte_array = parquet_data_ptr[j++];
58  if (byte_array.len > StringDictionary::MAX_STRLEN) {
59  invalid_indices.insert(current_batch_offset_ + i);
60  }
61  }
62  }
63  current_batch_offset_ += levels_read;
64  appendData(def_levels, rep_levels, values_read, levels_read, values);
65  }
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
#define CHECK_LT(x, y)
Definition: Logger.h:233
static constexpr size_t MAX_STRLEN

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Member Data Documentation

template<typename V >
ChunkMetadata* foreign_storage::ParquetStringEncoder< V >::chunk_metadata_
private
template<typename V >
int64_t foreign_storage::ParquetStringEncoder< V >::current_batch_offset_
private
template<typename V >
std::vector<int8_t> foreign_storage::ParquetStringEncoder< V >::encode_buffer_
private
template<typename V >
InvalidRowGroupIndices* foreign_storage::ParquetStringEncoder< V >::invalid_indices_
private

Definition at line 164 of file ParquetStringEncoder.h.

template<typename V >
V foreign_storage::ParquetStringEncoder< V >::max_
private
template<typename V >
V foreign_storage::ParquetStringEncoder< V >::min_
private
template<typename V >
StringDictionary* foreign_storage::ParquetStringEncoder< V >::string_dictionary_
private

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