InputTableInfoCache Class Reference

#include <InputMetadata.h>

Collaboration diagram for InputTableInfoCache:

Public Member Functions
	InputTableInfoCache (Executor *executor)
Fragmenter_Namespace::TableInfo	getTableInfo (const int table_id)
void	clear ()

Private Attributes
std::unordered_map< int, Fragmenter_Namespace::TableInfo >	cache_
Executor *	executor_

Detailed Description

Definition at line 38 of file InputMetadata.h.

Constructor & Destructor Documentation

InputTableInfoCache()

InputTableInfoCache::InputTableInfoCache

(

Executor *

executor

)

Definition at line 24 of file InputMetadata.cpp.

: executor_(executor) {}

Member Function Documentation

clear()

void InputTableInfoCache::clear

(

)

Definition at line 74 of file InputMetadata.cpp.

References cache_.

Referenced by Executor::clearMetaInfoCache().

                                {
  decltype(cache_)().swap(cache_);
}

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getTableInfo()

Fragmenter_Namespace::TableInfo InputTableInfoCache::getTableInfo

(

const int

table_id

)

Definition at line 57 of file InputMetadata.cpp.

References anonymous_namespace{InputMetadata.cpp}::build_table_info(), cache_, cat(), CHECK, anonymous_namespace{InputMetadata.cpp}::copy_table_info(), and executor_.

Referenced by Executor::getTableInfo().

                                                                                  {
  const auto it = cache_.find(table_id);
  if (it != cache_.end()) {
    const auto& table_info = it->second;
    return copy_table_info(table_info);
  }
  const auto cat = executor_->getCatalog();
  CHECK(cat);
  const auto td = cat->getMetadataForTable(table_id);
  CHECK(td);
  const auto shard_tables = cat->getPhysicalTablesDescriptors(td);
  auto table_info = build_table_info(shard_tables);
  auto it_ok = cache_.emplace(table_id, copy_table_info(table_info));
  CHECK(it_ok.second);
  return copy_table_info(table_info);
}

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Member Data Documentation

cache_

std::unordered_map<int, Fragmenter_Namespace::TableInfo> InputTableInfoCache::cache_

private

Definition at line 47 of file InputMetadata.h.

Referenced by clear(), and getTableInfo().

executor_

Executor* InputTableInfoCache::executor_

private

Definition at line 48 of file InputMetadata.h.

Referenced by getTableInfo().

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

• /home/jenkins-slave/workspace/core-os-doxygen/QueryEngine/InputMetadata.h
• /home/jenkins-slave/workspace/core-os-doxygen/QueryEngine/InputMetadata.cpp