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hongshibao 2015-10-26 01:38:29 +08:00
parent c9dcf64cd0
commit 5b312edb31
1 changed files with 74 additions and 1 deletions
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75
include/SQLiteCpp/Backup.h
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@ -39,31 +39,104 @@ namespace SQLite
class Backup
{
public:
/**
* @brief Initialize a SQLite Backup object.
*
* Initialize a SQLite Backup object for the source database and destination database.
* The database name is "main" for the main database, "temp" for the temporary database,
* or the name specified after the AS keyword in an ATTACH statement for an attached database.
*
* Exception is thrown in case of error, then the Backup object is NOT constructed.
*
* @param[in] aDestDatabase Destination database connection
* @param[in] apDestDatabaseName Destination database name
* @param[in] aSrcDatabase Source database connection
* @param[in] apSrcDatabaseName Source database name
*
* @throw SQLite::Exception in case of error
*/
Backup(Database& aDestDatabase,
const char* apDestDatabaseName,
Database& aSrcDatabase,
const char* apSrcDatabaseName);
/**
* @brief Initialize a SQLite Backup object.
*
* Initialize a SQLite Backup object for source database and destination database.
* The database name is "main" for the main database, "temp" for the temporary database,
* or the name specified after the AS keyword in an ATTACH statement for an attached database.
*
* Exception is thrown in case of error, then the Backup object is NOT constructed.
*
* @param[in] aDestDatabase Destination database connection
* @param[in] aDestDatabaseName Destination database name
* @param[in] aSrcDatabase Source database connection
* @param[in] aSrcDatabaseName Source database name
*
* @throw SQLite::Exception in case of error
*/
Backup(Database& aDestDatabase,
const std::string& aDestDatabaseName,
Database& aSrcDatabase,
const std::string& aSrcDatabaseName);
/**
* @brief Initialize a SQLite Backup object for main databases.
*
* Initialize a SQLite Backup object for source database and destination database.
* Backup the main databases between the source and the destination.
*
* Exception is thrown in case of error, then the Backup object is NOT constructed.
*
* @param[in] aDestDatabase Destination database connection
* @param[in] aSrcDatabase Source database connection
*
* @throw SQLite::Exception in case of error
*/
Backup(Database& aDestDatabase,
Database& aSrcDatabase);
/**
* @brief Release the SQLite Backup resource.
*/
virtual ~Backup() noexcept;
/**
* @brief Execute a step of backup with a given number of source pages to be copied
*
* Exception is thrown when SQLITE_IOERR_XXX, SQLITE_NOMEM, or SQLITE_READONLY is returned
* in sqlite3_backup_step(). These errors are considered fatal, so there is no point
* in retrying the call to executeStep().
*
* @param[in] aNumPage The number of source pages to be copied, with a negative value meaning all remaining source pages
*
* @return SQLITE_OK/SQLITE_DONE/SQLITE_BUSY/SQLITE_LOCKED
*
* @throw SQLite::Exception in case of error
*/
int executeStep(const int aNumPage = -1);
/**
* @brief Get the remaining number of source pages to be copied.
*
* @return the remaining number of source pages to be copied
*/
int remainingPageCount();
/**
* @brief Get the total number of source pages.
*
* @return the total number of source pages
*/
int totalPageCount();
/**
* @brief Return raw pointer to SQLite Database Backup Handle.
*
* This is often needed to mix this wrapper with other libraries or for advance usage not supported by SQLiteCpp.
*
* @return Raw pointer to SQLite Backup Handle
*/
inline sqlite3_backup* getHandle() const noexcept // nothrow
{
@ -77,7 +150,7 @@ private:
/// @}
private:
sqlite3_backup* mpSQLiteBackup;
sqlite3_backup* mpSQLiteBackup; //!< Pointer to SQLite Database Backup Handle
};
} // namespace SQLite