#include <DateDaysEncoder.h>

Inheritance diagram for DateDaysEncoder< T, V >:

Collaboration diagram for DateDaysEncoder< T, V >:

Public Member Functions
	DateDaysEncoder (Data_Namespace::AbstractBuffer *buffer)

size_t	getNumElemsForBytesEncodedDataAtIndices (const int8_t *index_data, const std::vector< size_t > &selected_idx, const size_t byte_limit) override

std::shared_ptr< ChunkMetadata >	appendEncodedDataAtIndices (const int8_t , int8_t data, const std::vector< size_t > &selected_idx) override

std::shared_ptr< ChunkMetadata >	appendEncodedData (const int8_t , int8_t data, const size_t start_idx, const size_t num_elements) override

std::shared_ptr< ChunkMetadata >	appendData (int8_t *&src_data, const size_t num_elems_to_append, const SQLTypeInfo &ti, const bool replicating=false, const int64_t offset=-1) override

void	getMetadata (const std::shared_ptr< ChunkMetadata > &chunkMetadata) override

std::shared_ptr< ChunkMetadata >	getMetadata (const SQLTypeInfo &ti) override

void	updateStats (const int64_t val, const bool is_null) override

void	updateStats (const double val, const bool is_null) override

void	updateStats (const int8_t *const src_data, const size_t num_elements) override

void	updateStats (const std::vector< std::string > *const src_data, const size_t start_idx, const size_t num_elements) override

void	updateStats (const std::vector< ArrayDatum > *const src_data, const size_t start_idx, const size_t num_elements) override

void	reduceStats (const Encoder &that) override

void	copyMetadata (const Encoder *copyFromEncoder) override

void	writeMetadata (FILE *f) override

void	readMetadata (FILE *f) override

bool	resetChunkStats (const ChunkStats &stats) override
	: Reset chunk level stats (min, max, nulls) using new values from the argument. More...

void	resetChunkStats () override

Public Member Functions inherited from Encoder
	Encoder (Data_Namespace::AbstractBuffer *buffer)

virtual	~Encoder ()

virtual void	updateStatsEncoded (const int8_t *const dst_data, const size_t num_elements)

size_t	getNumElems () const

void	setNumElems (const size_t num_elems)

Public Attributes
T	dataMin

T	dataMax

bool	has_nulls

Private Member Functions
std::shared_ptr< ChunkMetadata >	appendEncodedOrUnencodedData (int8_t *&src_data, const size_t num_elems_to_append, const SQLTypeInfo &ti, const bool replicating, const int64_t offset, const bool is_encoded)

void	updateStatsWithAlreadyEncoded (const V &encoded_data)

V	encodeDataAndUpdateStats (const T &unencoded_data)

Additional Inherited Members
Static Public Member Functions inherited from Encoder
static Encoder *	Create (Data_Namespace::AbstractBuffer *buffer, const SQLTypeInfo sqlType)

Protected Attributes inherited from Encoder
size_t	num_elems_

Data_Namespace::AbstractBuffer *	buffer_

DecimalOverflowValidator	decimal_overflow_validator_

DateDaysOverflowValidator	date_days_overflow_validator_

Detailed Description

template<typename T, typename V>
class DateDaysEncoder< T, V >

Definition at line 31 of file DateDaysEncoder.h.

Constructor & Destructor Documentation

template<typename T, typename V>

DateDaysEncoder< T, V >::DateDaysEncoder ( Data_Namespace::AbstractBuffer * buffer )

inline

Definition at line 33 of file DateDaysEncoder.h.

References DateDaysEncoder< T, V >::resetChunkStats().

                                                         : Encoder(buffer) {
     resetChunkStats();
   }

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Member Function Documentation

template<typename T, typename V>

std::shared_ptr<ChunkMetadata> DateDaysEncoder< T, V >::appendData	(	int8_t *&	src_data,
		const size_t	num_elems_to_append,
		const SQLTypeInfo &	ti,
		const bool	replicating = `false`,
		const int64_t	offset = `-1`
	)

inlineoverridevirtual

Append data to the chunk buffer backing this encoder.

Parameters

src_data	Source data for the append
num_elems_to_append	Number of elements to append
ti	SQL Type Info for the column TODO(adb): used?
replicating	Pass one value and fill the chunk with it
offset	Write data starting at a given offset. Default is -1 which indicates an append, an offset of 0 rewrites the chunk up to `num_elems_to_append`.

Implements Encoder.

Definition at line 72 of file DateDaysEncoder.h.

References DateDaysEncoder< T, V >::appendEncodedOrUnencodedData().

                                                                                 {
     return appendEncodedOrUnencodedData(
         src_data, num_elems_to_append, ti, replicating, offset, false);
   }

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template<typename T, typename V>

std::shared_ptr<ChunkMetadata> DateDaysEncoder< T, V >::appendEncodedData	(	const int8_t *	index_data,
		int8_t *	data,
		const size_t	start_idx,
		const size_t	num_elements
	)

inlineoverridevirtual

Append encoded data to the chunk buffer backing this encoder.

Parameters

index_data	- (optional) the index data of data to append
data	- the data to append
start_idx	- the position to start encoding from in the `data` array
num_elements	- the number of elements to encode from the `data` array

Returns: updated chunk metadata for the chunk buffer backing this encoder

NOTE: index_data must be non-null for varlen encoder types.

Implements Encoder.

Definition at line 63 of file DateDaysEncoder.h.

References DateDaysEncoder< T, V >::appendEncodedOrUnencodedData().

Referenced by DateDaysEncoder< T, V >::appendEncodedDataAtIndices().

                                                                                        {
     auto current_data = data + sizeof(V) * start_idx;
     return appendEncodedOrUnencodedData(
         current_data, num_elements, SQLTypeInfo{}, false, -1, true);
   }

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template<typename T, typename V>

std::shared_ptr<ChunkMetadata> DateDaysEncoder< T, V >::appendEncodedDataAtIndices	(	const int8_t *	index_data,
		int8_t *	data,
		const std::vector< size_t > &	selected_idx
	)

inlineoverridevirtual

Append selected encoded data to the chunk buffer backing this encoder.

Parameters

index_data	- (optional) the index data of data to append
data	- the data to append
selected_idx	- which indices in the encoded data to append

Returns: updated chunk metadata for the chunk buffer backing this encoder

NOTE: index_data must be non-null for varlen encoder types.

Implements Encoder.

Definition at line 46 of file DateDaysEncoder.h.

References DateDaysEncoder< T, V >::appendEncodedData(), and shared::execute_over_contiguous_indices().

                                                       {
     std::shared_ptr<ChunkMetadata> chunk_metadata;
     // NOTE: the use of `execute_over_contiguous_indices` is an optimization;
     // it prevents having to copy or move the indexed data and instead performs
     // an append over contiguous sections of indices.
     shared::execute_over_contiguous_indices(
         selected_idx, [&](const size_t start_pos, const size_t end_pos) {
           size_t elem_count = end_pos - start_pos;
           chunk_metadata =
               appendEncodedData(nullptr, data, selected_idx[start_pos], elem_count);
         });
     return chunk_metadata;
   }

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template<typename T, typename V>

std::shared_ptr<ChunkMetadata> DateDaysEncoder< T, V >::appendEncodedOrUnencodedData	(	int8_t *&	src_data,
		const size_t	num_elems_to_append,
		const SQLTypeInfo &	ti,
		const bool	replicating,
		const int64_t	offset,
		const bool	is_encoded
	)

inlineprivate

Definition at line 193 of file DateDaysEncoder.h.

References Data_Namespace::AbstractBuffer::append(), Encoder::buffer_, CHECK, CHECK_GE, DateDaysEncoder< T, V >::encodeDataAndUpdateStats(), DateDaysEncoder< T, V >::getMetadata(), Encoder::num_elems_, Data_Namespace::AbstractBuffer::reserve(), DateDaysEncoder< T, V >::resetChunkStats(), Data_Namespace::AbstractBuffer::size(), heavydb.dtypes::T, DateDaysEncoder< T, V >::updateStatsWithAlreadyEncoded(), and Data_Namespace::AbstractBuffer::write().

Referenced by DateDaysEncoder< T, V >::appendData(), and DateDaysEncoder< T, V >::appendEncodedData().

                              {
     if (offset == 0 && num_elems_to_append >= num_elems_) {
       resetChunkStats();
     }
 
     CHECK(!is_encoded || !replicating);  // do not support replicating of encoded data
 
     T* unencoded_data = reinterpret_cast<T*>(src_data);
     std::vector<V> encoded_data;
     V* data_to_write = nullptr;
     if (!is_encoded) {
       encoded_data.resize(num_elems_to_append);
       data_to_write = encoded_data.data();
       for (size_t i = 0; i < num_elems_to_append; ++i) {
         size_t ri = replicating ? 0 : i;
         encoded_data[i] = encodeDataAndUpdateStats(unencoded_data[ri]);
       }
     } else {
       data_to_write = reinterpret_cast<V*>(src_data);
       for (size_t i = 0; i < num_elems_to_append; ++i) {
         updateStatsWithAlreadyEncoded(data_to_write[i]);
       }
     }
 
     if (offset == -1) {
       auto append_data_size = num_elems_to_append * sizeof(V);
       buffer_->reserve(buffer_->size() + append_data_size);
       num_elems_ += num_elems_to_append;
       buffer_->append(reinterpret_cast<int8_t*>(data_to_write), append_data_size);
       if (!replicating) {
         src_data += num_elems_to_append * sizeof(T);
       }
     } else {
       num_elems_ = offset + num_elems_to_append;
       CHECK(!replicating);
       CHECK_GE(offset, 0);
       buffer_->write(reinterpret_cast<int8_t*>(data_to_write),
                      num_elems_to_append * sizeof(V),
                      static_cast<size_t>(offset));
     }
 
     auto chunk_metadata = std::make_shared<ChunkMetadata>();
     getMetadata(chunk_metadata);
     return chunk_metadata;
   }

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template<typename T, typename V>

void DateDaysEncoder< T, V >::copyMetadata ( const Encoder * copyFromEncoder )

inlineoverridevirtual

Implements Encoder.

Definition at line 144 of file DateDaysEncoder.h.

References DateDaysEncoder< T, V >::dataMax, DateDaysEncoder< T, V >::dataMin, Encoder::getNumElems(), DateDaysEncoder< T, V >::has_nulls, and Encoder::num_elems_.

                                                              {
     num_elems_ = copyFromEncoder->getNumElems();
     auto castedEncoder = reinterpret_cast<const DateDaysEncoder<T, V>*>(copyFromEncoder);
     dataMin = castedEncoder->dataMin;
     dataMax = castedEncoder->dataMax;
     has_nulls = castedEncoder->has_nulls;
   }

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template<typename T, typename V>

V DateDaysEncoder< T, V >::encodeDataAndUpdateStats ( const T & unencoded_data )

inlineprivate

Definition at line 255 of file DateDaysEncoder.h.

References DateDaysEncoder< T, V >::dataMax, DateDaysEncoder< T, V >::dataMin, Encoder::date_days_overflow_validator_, DateConverters::get_epoch_days_from_seconds(), DateConverters::get_epoch_seconds_from_days(), DateDaysEncoder< T, V >::has_nulls, heavydb.dtypes::T, and DateDaysOverflowValidator::validate().

Referenced by DateDaysEncoder< T, V >::appendEncodedOrUnencodedData(), and DateDaysEncoder< T, V >::updateStats().

                                                       {
     V encoded_data;
     if (unencoded_data == std::numeric_limits<V>::min()) {
       has_nulls = true;
       encoded_data = static_cast<V>(unencoded_data);
     } else {
       date_days_overflow_validator_.validate(unencoded_data);
       encoded_data = DateConverters::get_epoch_days_from_seconds(unencoded_data);
       const T data = DateConverters::get_epoch_seconds_from_days(encoded_data);
       dataMax = std::max(dataMax, data);
       dataMin = std::min(dataMin, data);
     }
     return encoded_data;
   }

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template<typename T, typename V>

void DateDaysEncoder< T, V >::getMetadata ( const std::shared_ptr< ChunkMetadata > & chunkMetadata )

inlineoverridevirtual

Reimplemented from Encoder.

Definition at line 81 of file DateDaysEncoder.h.

References DateDaysEncoder< T, V >::dataMax, DateDaysEncoder< T, V >::dataMin, Encoder::getMetadata(), and DateDaysEncoder< T, V >::has_nulls.

Referenced by DateDaysEncoder< T, V >::appendEncodedOrUnencodedData().

                                                                                {
     Encoder::getMetadata(chunkMetadata);
     chunkMetadata->fillChunkStats(dataMin, dataMax, has_nulls);
   }

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template<typename T, typename V>

std::shared_ptr<ChunkMetadata> DateDaysEncoder< T, V >::getMetadata ( const SQLTypeInfo & ti )

inlineoverridevirtual

Implements Encoder.

Definition at line 87 of file DateDaysEncoder.h.

References DateDaysEncoder< T, V >::dataMax, DateDaysEncoder< T, V >::dataMin, and DateDaysEncoder< T, V >::has_nulls.

                                                                            {
     auto chunk_metadata = std::make_shared<ChunkMetadata>(ti, 0, 0, ChunkStats{});
     chunk_metadata->fillChunkStats(dataMin, dataMax, has_nulls);
     return chunk_metadata;
   }

template<typename T, typename V>

size_t DateDaysEncoder< T, V >::getNumElemsForBytesEncodedDataAtIndices	(	const int8_t *	index_data,
		const std::vector< size_t > &	selected_idx,
		const size_t	byte_limit
	)

inlineoverridevirtual

Compute the maximum number of variable length encoded elements given a byte limit

Parameters

index_data	- (optional) index data for the encoded type
selected_idx	- which indices in the encoded data to consider
byte_limit	- byte limit that must be respected

Returns: the number of elements

NOTE: optional parameters above may be ignored by the implementation, but may or may not be required depending on the encoder type backing the implementation.

Implements Encoder.

Definition at line 37 of file DateDaysEncoder.h.

References UNREACHABLE.

                                                                                    {
     UNREACHABLE()
         << "getNumElemsForBytesEncodedDataAtIndices unexpectedly called for non varlen"
            " encoder";
     return {};
   }

template<typename T, typename V>

void DateDaysEncoder< T, V >::readMetadata ( FILE * f )

inlineoverridevirtual

Implements Encoder.

Definition at line 160 of file DateDaysEncoder.h.

References DateDaysEncoder< T, V >::dataMax, DateDaysEncoder< T, V >::dataMin, DateDaysEncoder< T, V >::has_nulls, Encoder::num_elems_, and heavydb.dtypes::T.

                                       {
     // assumes pointer is already in right place
     fread((int8_t*)&num_elems_, sizeof(size_t), 1, f);
     fread((int8_t*)&dataMin, 1, sizeof(T), f);
     fread((int8_t*)&dataMax, 1, sizeof(T), f);
     fread((int8_t*)&has_nulls, 1, sizeof(bool), f);
   }

template<typename T, typename V>

void DateDaysEncoder< T, V >::reduceStats ( const Encoder & that )

inlineoverridevirtual

Implements Encoder.

Definition at line 135 of file DateDaysEncoder.h.

References DateDaysEncoder< T, V >::dataMax, DateDaysEncoder< T, V >::dataMin, and DateDaysEncoder< T, V >::has_nulls.

                                                  {
     const auto that_typed = static_cast<const DateDaysEncoder<T, V>&>(that);
     if (that_typed.has_nulls) {
       has_nulls = true;
     }
     dataMin = std::min(dataMin, that_typed.dataMin);
     dataMax = std::max(dataMax, that_typed.dataMax);
   }

template<typename T, typename V>

bool DateDaysEncoder< T, V >::resetChunkStats ( const ChunkStats & )

inlineoverridevirtual

: Reset chunk level stats (min, max, nulls) using new values from the argument.

Returns: : True if an update occurred and the chunk needs to be flushed. False otherwise. Default false if metadata update is unsupported. Only reset chunk stats if the incoming stats differ from the current stats.

Reimplemented from Encoder.

Definition at line 168 of file DateDaysEncoder.h.

References DateDaysEncoder< T, V >::dataMax, DateDaysEncoder< T, V >::dataMin, ChunkStats::has_nulls, DateDaysEncoder< T, V >::has_nulls, ChunkStats::max, and ChunkStats::min.

                                                          {
     const auto new_min = DatumFetcher::getDatumVal<T>(stats.min);
     const auto new_max = DatumFetcher::getDatumVal<T>(stats.max);
 
     if (dataMin == new_min && dataMax == new_max && has_nulls == stats.has_nulls) {
       return false;
     }
 
     dataMin = new_min;
     dataMax = new_max;
     has_nulls = stats.has_nulls;
     return true;
   }

template<typename T, typename V>

void DateDaysEncoder< T, V >::resetChunkStats ( )

inlineoverridevirtual

Resets chunk metadata stats to their default values.

Implements Encoder.

Definition at line 182 of file DateDaysEncoder.h.

References DateDaysEncoder< T, V >::dataMax, DateDaysEncoder< T, V >::dataMin, and DateDaysEncoder< T, V >::has_nulls.

Referenced by DateDaysEncoder< T, V >::appendEncodedOrUnencodedData(), and DateDaysEncoder< T, V >::DateDaysEncoder().

                                   {
     dataMin = std::numeric_limits<T>::max();
     dataMax = std::numeric_limits<T>::lowest();
     has_nulls = false;
   }

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template<typename T, typename V>

void DateDaysEncoder< T, V >::updateStats	(	const int64_t	val,
		const bool	is_null
	)

inlineoverridevirtual

Implements Encoder.

Definition at line 94 of file DateDaysEncoder.h.

References DateDaysEncoder< T, V >::dataMax, DateDaysEncoder< T, V >::dataMin, DateDaysEncoder< T, V >::has_nulls, and heavydb.dtypes::T.

                                                                    {
     if (is_null) {
       has_nulls = true;
     } else {
       const auto data = static_cast<T>(val);
       dataMin = std::min(dataMin, data);
       dataMax = std::max(dataMax, data);
     }
   }

template<typename T, typename V>

void DateDaysEncoder< T, V >::updateStats	(	const double	val,
		const bool	is_null
	)

inlineoverridevirtual

Implements Encoder.

Definition at line 105 of file DateDaysEncoder.h.

References DateDaysEncoder< T, V >::dataMax, DateDaysEncoder< T, V >::dataMin, DateDaysEncoder< T, V >::has_nulls, and heavydb.dtypes::T.

                                                                   {
     if (is_null) {
       has_nulls = true;
     } else {
       const auto data = static_cast<T>(val);
       dataMin = std::min(dataMin, data);
       dataMax = std::max(dataMax, data);
     }
   }

template<typename T, typename V>

void DateDaysEncoder< T, V >::updateStats	(	const int8_t *const	src_data,
		const size_t	num_elements
	)

inlineoverridevirtual

Update statistics for data without appending.

Parameters

src_data	- the data with which to update statistics
num_elements	- the number of elements to scan in the data

Implements Encoder.

Definition at line 115 of file DateDaysEncoder.h.

References DateDaysEncoder< T, V >::encodeDataAndUpdateStats(), and heavydb.dtypes::T.

                                                                                      {
     const T* unencoded_data = reinterpret_cast<const T*>(src_data);
     for (size_t i = 0; i < num_elements; ++i) {
       encodeDataAndUpdateStats(unencoded_data[i]);
     }
   }

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template<typename T, typename V>

void DateDaysEncoder< T, V >::updateStats	(	const std::vector< std::string > *const	src_data,
		const size_t	start_idx,
		const size_t	num_elements
	)

inlineoverridevirtual

Update statistics for string data without appending.

Parameters

src_data	- the string data with which to update statistics
start_idx	- the offset into `src_data` to start the update
num_elements	- the number of elements to scan in the string data

Implements Encoder.

Definition at line 122 of file DateDaysEncoder.h.

References UNREACHABLE.

                                                        {
     UNREACHABLE();
   }

template<typename T, typename V>

void DateDaysEncoder< T, V >::updateStats	(	const std::vector< ArrayDatum > *const	src_data,
		const size_t	start_idx,
		const size_t	num_elements
	)

inlineoverridevirtual

Update statistics for array data without appending.

Parameters

src_data	- the array data with which to update statistics
start_idx	- the offset into `src_data` to start the update
num_elements	- the number of elements to scan in the array data

Implements Encoder.

Definition at line 128 of file DateDaysEncoder.h.

References UNREACHABLE.

                                                        {
     UNREACHABLE();
   }

template<typename T, typename V>

void DateDaysEncoder< T, V >::updateStatsWithAlreadyEncoded ( const V & encoded_data )

inlineprivate

Definition at line 245 of file DateDaysEncoder.h.

References DateDaysEncoder< T, V >::dataMax, DateDaysEncoder< T, V >::dataMin, DateConverters::get_epoch_seconds_from_days(), DateDaysEncoder< T, V >::has_nulls, and heavydb.dtypes::T.

Referenced by DateDaysEncoder< T, V >::appendEncodedOrUnencodedData().

                                                             {
     if (encoded_data == std::numeric_limits<V>::min()) {
       has_nulls = true;
     } else {
       const T data = DateConverters::get_epoch_seconds_from_days(encoded_data);
       dataMax = std::max(dataMax, data);
       dataMin = std::min(dataMin, data);
     }
   }

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template<typename T, typename V>

void DateDaysEncoder< T, V >::writeMetadata ( FILE * f )

inlineoverridevirtual

Implements Encoder.

Definition at line 152 of file DateDaysEncoder.h.

References DateDaysEncoder< T, V >::dataMax, DateDaysEncoder< T, V >::dataMin, DateDaysEncoder< T, V >::has_nulls, Encoder::num_elems_, and heavydb.dtypes::T.

                                        {
     // assumes pointer is already in right place
     fwrite((int8_t*)&num_elems_, sizeof(size_t), 1, f);
     fwrite((int8_t*)&dataMin, sizeof(T), 1, f);
     fwrite((int8_t*)&dataMax, sizeof(T), 1, f);
     fwrite((int8_t*)&has_nulls, sizeof(bool), 1, f);
   }

Member Data Documentation

template<typename T, typename V>

T DateDaysEncoder< T, V >::dataMax

Definition at line 189 of file DateDaysEncoder.h.

Referenced by DateDaysEncoder< T, V >::copyMetadata(), DateDaysEncoder< T, V >::encodeDataAndUpdateStats(), DateDaysEncoder< T, V >::getMetadata(), DateDaysEncoder< T, V >::readMetadata(), DateDaysEncoder< T, V >::reduceStats(), DateDaysEncoder< T, V >::resetChunkStats(), DateDaysEncoder< T, V >::updateStats(), DateDaysEncoder< T, V >::updateStatsWithAlreadyEncoded(), and DateDaysEncoder< T, V >::writeMetadata().

template<typename T, typename V>

T DateDaysEncoder< T, V >::dataMin

Definition at line 188 of file DateDaysEncoder.h.

Referenced by DateDaysEncoder< T, V >::copyMetadata(), DateDaysEncoder< T, V >::encodeDataAndUpdateStats(), DateDaysEncoder< T, V >::getMetadata(), DateDaysEncoder< T, V >::readMetadata(), DateDaysEncoder< T, V >::reduceStats(), DateDaysEncoder< T, V >::resetChunkStats(), DateDaysEncoder< T, V >::updateStats(), DateDaysEncoder< T, V >::updateStatsWithAlreadyEncoded(), and DateDaysEncoder< T, V >::writeMetadata().

template<typename T, typename V>

bool DateDaysEncoder< T, V >::has_nulls

Definition at line 190 of file DateDaysEncoder.h.

Referenced by DateDaysEncoder< T, V >::copyMetadata(), DateDaysEncoder< T, V >::encodeDataAndUpdateStats(), DateDaysEncoder< T, V >::getMetadata(), heavydb.thrift.ttypes.TColumnRange::read(), DateDaysEncoder< T, V >::readMetadata(), DateDaysEncoder< T, V >::reduceStats(), DateDaysEncoder< T, V >::resetChunkStats(), DateDaysEncoder< T, V >::updateStats(), DateDaysEncoder< T, V >::updateStatsWithAlreadyEncoded(), heavydb.thrift.ttypes.TColumnRange::write(), and DateDaysEncoder< T, V >::writeMetadata().

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

/home/jenkins-slave/workspace/core-os-doxygen/DataMgr/DateDaysEncoder.h

Public Member Functions

Public Attributes

Private Member Functions

Additional Inherited Members

Detailed Description

template<typename T, typename V> class DateDaysEncoder< T, V >

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation

template<typename T, typename V>
class DateDaysEncoder< T, V >