ResultSetIteration.cpp File Reference

Iteration part of the row set interface. More...

#include "../Shared/geo_types.h"
#include "../Shared/likely.h"
#include "Execute.h"
#include "ParserNode.h"
#include "QueryEngine/TargetValue.h"
#include "ResultSet.h"
#include "ResultSetGeoSerialization.h"
#include "RuntimeFunctions.h"
#include "Shared/SqlTypesLayout.h"
#include "Shared/geo_compression.h"
#include "Shared/sqltypes.h"
#include "TypePunning.h"
#include <memory>
#include <utility>

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Classes
struct	anonymous_namespace{ResultSetIteration.cpp}::GeoLazyFetchHandler
struct	anonymous_namespace{ResultSetIteration.cpp}::GeoQueryOutputFetchHandler
struct	anonymous_namespace{ResultSetIteration.cpp}::GeoTargetValueBuilder< GEO_SOURCE_TYPE, GeoTargetFetcher >

Namespaces
	anonymous_namespace{ResultSetIteration.cpp}

Macros
#define	DEF_GET_ENTRY_AT(query_type, columnar_output)
#define	DATA_T   int64_t
#define	DATA_T   int32_t
#define	DATA_T   int16_t
#define	DATA_T   int8_t
#define	DATA_T   float
#define	DATA_T   double

Functions
TargetValue	anonymous_namespace{ResultSetIteration.cpp}::make_avg_target_value (const int8_t *ptr1, const int8_t compact_sz1, const int8_t *ptr2, const int8_t compact_sz2, const TargetInfo &target_info)
const int8_t *	anonymous_namespace{ResultSetIteration.cpp}::advance_col_buff_to_slot (const int8_t *buff, const QueryMemoryDescriptor &query_mem_desc, const std::vector< TargetInfo > &targets, const size_t slot_idx, const bool separate_varlen_storage)
size_t	get_byteoff_of_slot (const size_t slot_idx, const QueryMemoryDescriptor &query_mem_desc)
const int8_t *	anonymous_namespace{ResultSetIteration.cpp}::columnar_elem_ptr (const size_t entry_idx, const int8_t *col1_ptr, const int8_t compact_sz1)
int64_t	anonymous_namespace{ResultSetIteration.cpp}::int_resize_cast (const int64_t ival, const size_t sz)
int64_t	lazy_decode (const ColumnLazyFetchInfo &col_lazy_fetch, const int8_t *byte_stream, const int64_t pos)
template<class T >
ScalarTargetValue	anonymous_namespace{ResultSetIteration.cpp}::make_scalar_tv (const T val)
template<>
ScalarTargetValue	anonymous_namespace{ResultSetIteration.cpp}::make_scalar_tv (const float val)
template<>
ScalarTargetValue	anonymous_namespace{ResultSetIteration.cpp}::make_scalar_tv (const double val)
template<class T >
TargetValue	anonymous_namespace{ResultSetIteration.cpp}::build_array_target_value (const int8_t *buff, const size_t buff_sz, std::shared_ptr< RowSetMemoryOwner > row_set_mem_owner)
TargetValue	anonymous_namespace{ResultSetIteration.cpp}::build_string_array_target_value (const int32_t *buff, const size_t buff_sz, const int dict_id, const bool translate_strings, std::shared_ptr< RowSetMemoryOwner > row_set_mem_owner, const Executor *executor)
TargetValue	anonymous_namespace{ResultSetIteration.cpp}::build_array_target_value (const SQLTypeInfo &array_ti, const int8_t *buff, const size_t buff_sz, const bool translate_strings, std::shared_ptr< RowSetMemoryOwner > row_set_mem_owner, const Executor *executor)
template<class Tuple , size_t... indices>
std::vector< std::pair< const int8_t *, const int64_t > >	anonymous_namespace{ResultSetIteration.cpp}::make_vals_vector (std::index_sequence< indices... >, const Tuple &tuple)
std::unique_ptr< ArrayDatum >	anonymous_namespace{ResultSetIteration.cpp}::lazy_fetch_chunk (const int8_t *ptr, const int64_t varlen_ptr)
std::unique_ptr< ArrayDatum >	anonymous_namespace{ResultSetIteration.cpp}::fetch_data_from_gpu (int64_t varlen_ptr, const int64_t length, Data_Namespace::DataMgr *data_mgr, const int device_id)
template<typename T >
std::pair< int64_t, int64_t >	anonymous_namespace{ResultSetIteration.cpp}::get_frag_id_and_local_idx (const std::vector< std::vector< T >> &frag_offsets, const size_t tab_or_col_idx, const int64_t global_idx)
template<typename T >
size_t	anonymous_namespace{ResultSetIteration.cpp}::make_bin_search (size_t l, size_t r, T &&is_empty_fn)

Detailed Description

Iteration part of the row set interface.

Author

Alex Suhan alex@.nosp@m.mapd.nosp@m..com Copyright (c) 2014 MapD Technologies, Inc. All rights reserved.

Definition in file ResultSetIteration.cpp.

Macro Definition Documentation

DATA_T [1/6]

#define DATA_T   int64_t

Definition at line 1274 of file ResultSetIteration.cpp.

DATA_T [2/6]

#define DATA_T   int32_t

Definition at line 1274 of file ResultSetIteration.cpp.

DATA_T [3/6]

#define DATA_T   int16_t

Definition at line 1274 of file ResultSetIteration.cpp.

DATA_T [4/6]

#define DATA_T   int8_t

Definition at line 1274 of file ResultSetIteration.cpp.

DATA_T [5/6]

#define DATA_T   float

Definition at line 1274 of file ResultSetIteration.cpp.

DATA_T [6/6]

#define DATA_T   double

Definition at line 1274 of file ResultSetIteration.cpp.

DEF_GET_ENTRY_AT

#define DEF_GET_ENTRY_AT	(		query_type,
			columnar_output
	)

Value:

template DATA_T ResultSet::getEntryAt<DATA_T, query_type, columnar_output>( \
      const size_t row_idx, const size_t target_idx, const size_t slot_idx) const;

Definition at line 1235 of file ResultSetIteration.cpp.

Function Documentation

get_byteoff_of_slot()

size_t get_byteoff_of_slot	(	const size_t	slot_idx,
		const QueryMemoryDescriptor &	query_mem_desc
	)

Definition at line 111 of file ResultSetIteration.cpp.

References advance_slot(), advance_target_ptr_col_wise(), advance_target_ptr_row_wise(), align_to_int64(), CHECK, anonymous_namespace{TypedDataAccessors.h}::decimal_to_double(), get_cols_ptr(), get_key_bytes_rowwise(), QueryMemoryDescriptor::getPaddedColWidthForRange(), ResultSet::getRowAt(), row_ptr_rowwise(), and UNLIKELY.

Referenced by ResultSetReductionJIT::isEmpty(), ResultSetStorage::isEmptyEntry(), and RowSortException::RowSortException().

                                                                        {
  return query_mem_desc.getPaddedColWidthForRange(0, slot_idx);
}

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lazy_decode()

int64_t lazy_decode	(	const ColumnLazyFetchInfo &	col_lazy_fetch,
		const int8_t *	byte_stream,
		const int64_t	pos
	)

Definition at line 762 of file ResultSetIteration.cpp.

References CHECK, CHECK_EQ, fixed_width_double_decode_noinline(), fixed_width_float_decode_noinline(), fixed_width_int_decode_noinline(), fixed_width_small_date_decode_noinline(), fixed_width_unsigned_decode_noinline(), get_bit_width(), SQLTypeInfo::get_elem_type(), inline_fixed_encoding_null_val(), inline_int_null_val(), SQLTypeInfo::is_column(), ColumnLazyFetchInfo::is_lazily_fetched, kENCODING_DATE_IN_DAYS, kENCODING_DICT, kENCODING_FIXED, kENCODING_NONE, kFLOAT, NULL_BIGINT, NULL_INT, NULL_SMALLINT, and ColumnLazyFetchInfo::type.

Referenced by ResultSet::lazyReadInt(), ResultSet::makeTargetValue(), and RowSortException::RowSortException().

                                       {
  CHECK(col_lazy_fetch.is_lazily_fetched);
  const auto& type_info =
      (col_lazy_fetch.type.is_column() ? col_lazy_fetch.type.get_elem_type()
                                       : col_lazy_fetch.type);
  if (type_info.is_fp()) {
    if (type_info.get_type() == kFLOAT) {
      double fval = fixed_width_float_decode_noinline(byte_stream, pos);
      return *reinterpret_cast<const int64_t*>(may_alias_ptr(&fval));
    } else {
      double fval = fixed_width_double_decode_noinline(byte_stream, pos);
      return *reinterpret_cast<const int64_t*>(may_alias_ptr(&fval));
    }
  }
  CHECK(type_info.is_integer() || type_info.is_decimal() || type_info.is_time() ||
        type_info.is_timeinterval() || type_info.is_boolean() || type_info.is_string() ||
        type_info.is_array());
  size_t type_bitwidth = get_bit_width(type_info);
  if (type_info.get_compression() == kENCODING_FIXED) {
    type_bitwidth = type_info.get_comp_param();
  } else if (type_info.get_compression() == kENCODING_DICT) {
    type_bitwidth = 8 * type_info.get_size();
  }
  CHECK_EQ(size_t(0), type_bitwidth % 8);
  int64_t val;
  if (type_info.is_date_in_days()) {
    val = type_info.get_comp_param() == 16
              ? fixed_width_small_date_decode_noinline(
                    byte_stream, 2, NULL_SMALLINT, NULL_BIGINT, pos)
              : fixed_width_small_date_decode_noinline(
                    byte_stream, 4, NULL_INT, NULL_BIGINT, pos);
  } else {
    val = (type_info.get_compression() == kENCODING_DICT &&
           type_info.get_size() < type_info.get_logical_size() &&
           type_info.get_comp_param())
              ? fixed_width_unsigned_decode_noinline(byte_stream, type_bitwidth / 8, pos)
              : fixed_width_int_decode_noinline(byte_stream, type_bitwidth / 8, pos);
  }
  if (type_info.get_compression() != kENCODING_NONE &&
      type_info.get_compression() != kENCODING_DATE_IN_DAYS) {
    CHECK(type_info.get_compression() == kENCODING_FIXED ||
          type_info.get_compression() == kENCODING_DICT);
    auto encoding = type_info.get_compression();
    if (encoding == kENCODING_FIXED) {
      encoding = kENCODING_NONE;
    }
    SQLTypeInfo col_logical_ti(type_info.get_type(),
                               type_info.get_dimension(),
                               type_info.get_scale(),
                               false,
                               encoding,
                               0,
                               type_info.get_subtype());
    if (val == inline_fixed_encoding_null_val(type_info)) {
      return inline_int_null_val(col_logical_ti);
    }
  }
  return val;
}

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