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Sqlite: Handle cases that the database is busy

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This should be not be happen but better be save than sorry.

Change-Id: I7b4afe491c07f8d5da2dc13aaffd2f354384a3ae
Reviewed-by: Tim Jenssen <tim.jenssen@qt.io>
This commit is contained in:
Marco Bubke
2019-07-10 14:34:48 +02:00
parent 10f3621cf1
commit d7e5935396
1 changed files with 18 additions and 10 deletions
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28
src/libs/sqlite/sqlitedatabasebackend.cpp
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@@ -25,10 +25,10 @@
#include "sqlitedatabasebackend.h"
#include "sqlitebasestatement.h"
#include "sqliteexception.h"
#include "sqlitereadstatement.h"
#include "sqlitereadwritestatement.h"
#include "sqlitebasestatement.h"
#include "sqlitewritestatement.h"
#include <QFileInfo>
@@ -177,8 +177,12 @@ void DatabaseBackend::setLastInsertedRowId(int64_t rowId)
void DatabaseBackend::execute(Utils::SmallStringView sqlStatement)
{
ReadWriteStatement statement(sqlStatement, m_database);
statement.execute();
try {
ReadWriteStatement statement(sqlStatement, m_database);
statement.execute();
} catch (StatementIsBusy &) {
execute(sqlStatement);
}
}
void DatabaseBackend::close()
@@ -217,14 +221,14 @@ void DatabaseBackend::registerBusyHandler()
void DatabaseBackend::registerRankingFunction()
{
sqlite3_create_function_v2(sqliteDatabaseHandle(), "okapi_bm25", -1, SQLITE_ANY, 0, okapi_bm25, 0, 0, 0);
sqlite3_create_function_v2(sqliteDatabaseHandle(), "okapi_bm25f", -1, SQLITE_UTF8, 0, okapi_bm25f, 0, 0, 0);
sqlite3_create_function_v2(sqliteDatabaseHandle(), "okapi_bm25f_kb", -1, SQLITE_UTF8, 0, okapi_bm25f_kb, 0, 0, 0);
// sqlite3_create_function_v2(sqliteDatabaseHandle(), "okapi_bm25", -1, SQLITE_ANY, 0, okapi_bm25, 0, 0, 0);
// sqlite3_create_function_v2(sqliteDatabaseHandle(), "okapi_bm25f", -1, SQLITE_UTF8, 0, okapi_bm25f, 0, 0, 0);
// sqlite3_create_function_v2(sqliteDatabaseHandle(), "okapi_bm25f_kb", -1, SQLITE_UTF8, 0, okapi_bm25f_kb, 0, 0, 0);
}
int DatabaseBackend::busyHandlerCallback(void *, int counter)
{
Q_UNUSED(counter);
Q_UNUSED(counter)
#ifdef QT_DEBUG
//qWarning() << "Busy handler invoked" << counter << "times!";
#endif
@@ -453,11 +457,15 @@ void DatabaseBackend::throwDatabaseIsNotOpen(const char *whatHasHappens) const
template <typename Type>
Type DatabaseBackend::toValue(Utils::SmallStringView sqlStatement)
{
ReadWriteStatement statement(sqlStatement, m_database);
try {
ReadWriteStatement statement(sqlStatement, m_database);
statement.next();
statement.next();
return statement.fetchValue<Type>(0);
return statement.fetchValue<Type>(0);
} catch (StatementIsBusy &) {
return toValue<Type>(sqlStatement);
}
}
} // namespace Sqlite