QueryMemoryDescriptor.h File Reference

Descriptor for the result set buffer layout. More...

#include "../CompilationOptions.h"
#include "../CountDistinct.h"
#include "ColSlotContext.h"
#include "Types.h"
#include <boost/optional.hpp>
#include "Shared/Logger.h"
#include <algorithm>
#include <cstddef>
#include <cstdint>
#include <memory>
#include <numeric>
#include <unordered_map>
#include <vector>
#include <Shared/SqlTypesLayout.h>
#include <Shared/TargetInfo.h>

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Classes
class	QueryMemoryDescriptor

Enumerations
enum	GroupByMemSharing { GroupByMemSharing::Shared, GroupByMemSharing::SharedForKeylessOneColumnKnownRange }

Functions
void	set_notnull (TargetInfo &target, const bool not_null)
std::vector< TargetInfo >	target_exprs_to_infos (const std::vector< Analyzer::Expr * > &targets, const QueryMemoryDescriptor &query_mem_desc)

Variables
bool	g_cluster

Detailed Description

Descriptor for the result set buffer layout.

Author

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

Definition in file QueryMemoryDescriptor.h.

Enumeration Type Documentation

enum GroupByMemSharing

strong

Enumerator
Shared
SharedForKeylessOneColumnKnownRange

Definition at line 58 of file QueryMemoryDescriptor.h.

{ Shared, SharedForKeylessOneColumnKnownRange };

Function Documentation

void set_notnull ( TargetInfo &  target, const bool  not_null  )

inline

Definition at line 372 of file QueryMemoryDescriptor.h.

References get_compact_type(), set_compact_type(), and TargetInfo::skip_null_val.

Referenced by init_agg_val_vec(), and target_exprs_to_infos().

                                                                 {
  target.skip_null_val = !not_null;
  auto new_type = get_compact_type(target);
  new_type.set_notnull(not_null);
  set_compact_type(target, new_type);
}

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std::vector<TargetInfo> target_exprs_to_infos	(	const std::vector< Analyzer::Expr * > &	targets,
		const QueryMemoryDescriptor &	query_mem_desc
	)

Definition at line 1179 of file QueryMemoryDescriptor.cpp.

References g_bigint_count, get_target_info(), QueryMemoryDescriptor::getQueryDescriptionType(), NonGroupedAggregate, and set_notnull().

Referenced by SpeculativeTopNMap::asRows(), device_allocator_(), and QueryMemoryInitializer::QueryMemoryInitializer().

                                                 {
  std::vector<TargetInfo> target_infos;
  for (const auto target_expr : targets) {
    auto target = get_target_info(target_expr, g_bigint_count);
    if (query_mem_desc.getQueryDescriptionType() ==
        QueryDescriptionType::NonGroupedAggregate) {
      set_notnull(target, false);
      target.sql_type.set_notnull(false);
    }
    target_infos.push_back(target);
  }
  return target_infos;
}

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Variable Documentation

bool g_cluster