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This commit is contained in:
hongshibao 2015-10-28 02:01:32 +08:00
parent 5b312edb31
commit 08716b8938
1 changed files with 7 additions and 0 deletions
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7
src/Backup.cpp
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@ -18,6 +18,7 @@
namespace SQLite namespace SQLite
{ {
// Initialize resource for SQLite database backup
Backup::Backup(Database& aDestDatabase, Backup::Backup(Database& aDestDatabase,
const char *apDestDatabaseName, const char *apDestDatabaseName,
Database& aSrcDatabase, Database& aSrcDatabase,
@ -35,6 +36,7 @@ Backup::Backup(Database& aDestDatabase,
} }
} }
// Initialize resource for SQLite database backup
Backup::Backup(Database &aDestDatabase, Backup::Backup(Database &aDestDatabase,
const std::string &aDestDatabaseName, const std::string &aDestDatabaseName,
Database &aSrcDatabase, Database &aSrcDatabase,
@ -52,6 +54,7 @@ Backup::Backup(Database &aDestDatabase,
} }
} }
// Initialize resource for SQLite database backup
Backup::Backup(Database &aDestDatabase, Database &aSrcDatabase) : Backup::Backup(Database &aDestDatabase, Database &aSrcDatabase) :
mpSQLiteBackup(NULL) mpSQLiteBackup(NULL)
{ {
@ -66,6 +69,7 @@ Backup::Backup(Database &aDestDatabase, Database &aSrcDatabase) :
} }
} }
// Release resource for SQLite database backup
Backup::~Backup() noexcept Backup::~Backup() noexcept
{ {
if (NULL != mpSQLiteBackup) if (NULL != mpSQLiteBackup)
@ -74,6 +78,7 @@ Backup::~Backup() noexcept
} }
} }
// Execute backup step with a given number of source pages to be copied
int Backup::executeStep(const int aNumPage /* = -1 */) int Backup::executeStep(const int aNumPage /* = -1 */)
{ {
const int res = sqlite3_backup_step(mpSQLiteBackup, aNumPage); const int res = sqlite3_backup_step(mpSQLiteBackup, aNumPage);
@ -87,11 +92,13 @@ int Backup::executeStep(const int aNumPage /* = -1 */)
return res; return res;
} }
// Get the number of remaining source pages to be copied in this backup process
int Backup::remainingPageCount() int Backup::remainingPageCount()
{ {
return sqlite3_backup_remaining(mpSQLiteBackup); return sqlite3_backup_remaining(mpSQLiteBackup);
} }
// Get the number of total source pages to be copied in this backup process
int Backup::totalPageCount() int Backup::totalPageCount()
{ {
return sqlite3_backup_pagecount(mpSQLiteBackup); return sqlite3_backup_pagecount(mpSQLiteBackup);