impeller::ArchiveDatabase Class Reference

A handle to the underlying database connection for an archive. More...

#include <archive_database.h>

Classes
struct	Handle

Public Member Functions
	ArchiveDatabase (const std::string &filename)
	~ArchiveDatabase ()
bool	IsValid () const
int64_t	GetLastInsertRowID ()
const ArchiveClassRegistration *	GetRegistrationForDefinition (const ArchiveDef &definition)
ArchiveTransaction	CreateTransaction (int64_t &transactionCount)

Friends
class	ArchiveClassRegistration

Detailed Description

A handle to the underlying database connection for an archive.

Definition at line 23 of file archive_database.h.

Constructor & Destructor Documentation

ArchiveDatabase()

impeller::ArchiveDatabase::ArchiveDatabase ( const std::string &  filename )

explicit

Definition at line 55 of file archive_database.cc.

    : handle_(std::make_unique<Handle>(filename)) {
  if (!handle_->IsValid()) {
    handle_.reset();
    return;
  }
 
  begin_transaction_stmt_ = std::unique_ptr<ArchiveStatement>(
      new ArchiveStatement(handle_->Get(), "BEGIN TRANSACTION;"));
 
  if (!begin_transaction_stmt_->IsValid()) {
    return;
  }
 
  end_transaction_stmt_ = std::unique_ptr<ArchiveStatement>(
      new ArchiveStatement(handle_->Get(), "END TRANSACTION;"));
 
  if (!end_transaction_stmt_->IsValid()) {
    return;
  }
 
  rollback_transaction_stmt_ = std::unique_ptr<ArchiveStatement>(
      new ArchiveStatement(handle_->Get(), "ROLLBACK TRANSACTION;"));
 
  if (!rollback_transaction_stmt_->IsValid()) {
    return;
  }
}

~ArchiveDatabase()

impeller::ArchiveDatabase::~ArchiveDatabase ( )

default

Member Function Documentation

CreateTransaction()

ArchiveTransaction impeller::ArchiveDatabase::CreateTransaction

(

int64_t &

transactionCount

)

Definition at line 135 of file archive_database.cc.

                               {
  return ArchiveTransaction{transactionCount,          //
                            *begin_transaction_stmt_,  //
                            *end_transaction_stmt_,    //
                            *rollback_transaction_stmt_};
}

GetLastInsertRowID()

int64_t impeller::ArchiveDatabase::GetLastInsertRowID

(

)

Definition at line 90 of file archive_database.cc.

                                            {
  if (!IsValid()) {
    return 0u;
  }
  return ::sqlite3_last_insert_rowid(handle_->Get());
}

References IsValid().

GetRegistrationForDefinition()

const ArchiveClassRegistration * impeller::ArchiveDatabase::GetRegistrationForDefinition

(

const ArchiveDef &

definition

)

Definition at line 105 of file archive_database.cc.

                                  {
  auto found = registrations_.find(definition.table_name);
  if (found != registrations_.end()) {
    /*
     *  This class has already been registered.
     */
    return RegistrationIfReady(found->second.get());
  }
 
  /*
   *  Initialize a new class registration for the given class definition.
   */
  auto registration = std::unique_ptr<ArchiveClassRegistration>(
      new ArchiveClassRegistration(*this, definition));
  auto res =
      registrations_.emplace(definition.table_name, std::move(registration));
 
  /*
   *  If the new class registration is ready, return it to the caller.
   */
  return res.second ? RegistrationIfReady((*(res.first)).second.get())
                    : nullptr;
}

References ArchiveClassRegistration, impeller::RegistrationIfReady(), and impeller::ArchiveDef::table_name.

IsValid()

bool impeller::ArchiveDatabase::IsValid

(

)

const

Definition at line 86 of file archive_database.cc.

                                    {
  return handle_ != nullptr;
}

Referenced by GetLastInsertRowID().

Friends And Related Function Documentation

ArchiveClassRegistration

friend class ArchiveClassRegistration

friend

Definition at line 47 of file archive_database.h.

Referenced by GetRegistrationForDefinition().

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

• impeller/archivist/archive_database.h
• impeller/archivist/archive_database.cc