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rework the pragma view and setting

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removed uninteresting PRAGMA's for user
only set PRAGMA if value has changed
commit transaction before setting pragma with user warning
show the current PRAGMA value after setting
This commit is contained in:
Peinthor Rene
2013-01-25 14:55:03 +01:00
parent 95dbd93ab8
commit 322520270d
5 changed files with 273 additions and 370 deletions
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130
src/sqlitedb.cpp
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@@ -1014,7 +1014,7 @@ QStringList DBBrowserDB::decodeCSV(const QString & csvfilename, char sep, char q
return result;
}
QString DBBrowserDB::getPragma(QString pragma)
QString DBBrowserDB::getPragma(const QString& pragma)
{
if(!isOpen())
return "";
@@ -1025,111 +1025,63 @@ QString DBBrowserDB::getPragma(QString pragma)
QString retval = "";
// Get value from DB
int err = sqlite3_prepare(_db, sql.toStdString().c_str(), sql.length(), &vm, &tail);
int err = sqlite3_prepare(_db, sql.toUtf8(), sql.toUtf8().length(), &vm, &tail);
if(err == SQLITE_OK){
logSQL(sql, kLogMsg_App);
if(sqlite3_step(vm) == SQLITE_ROW)
{
retval = QString((const char *) sqlite3_column_text(vm, 0));
sqlite3_finalize(vm);
//qDebug((pragma + ": " + retval).toStdString().c_str());
} else {
sqlite3_finalize(vm);
qDebug(QObject::tr("didn't receive any output from pragma %1").arg(pragma).toStdString().c_str());
}
sqlite3_finalize(vm);
} else {
qDebug(QObject::tr("could not execute pragma command: %1, %2").arg(err).arg(sqlite3_errmsg(_db)).toStdString().c_str());
}
// Make changes to the value when needed
if(pragma == "journal_mode")
{
retval = retval.toLower();
if(retval == "delete")
retval = "0";
else if(retval == "truncate")
retval = "1";
else if(retval == "persist")
retval = "2";
else if(retval == "memory")
retval = "3";
else if(retval == "wal")
retval = "4";
else if(retval == "off")
retval = "5";
else
retval = "0";
} else if(pragma == "locking_mode") {
retval = retval.toLower();
if(retval == "normal")
retval = "0";
else if(retval == "exclusive")
retval = "1";
else
retval = "0";
} else if(pragma == "encoding") {
retval = retval.toLower();
if(retval == "utf-8")
retval = "0";
else if(retval == "utf-16")
retval = "1";
else if(retval == "utf-16le")
retval = "2";
else if(retval == "utf-16be")
retval = "3";
else
retval = "0";
}
// Return it
return retval;
}
bool DBBrowserDB::setPragma(QString pragma, QString value)
bool DBBrowserDB::setPragma(const QString& pragma, const QString& value)
{
// Make changes to the value when needed
if(pragma == "journal_mode")
{
if(value == "0")
value = "\"delete\"";
else if(value == "1")
value = "\"truncate\"";
else if(value == "2")
value = "\"persist\"";
else if(value == "3")
value = "\"memory\"";
else if(value == "4")
value = "\"wal\"";
else if(value == "5")
value = "\"off\"";
else
value = "\"delete\"";
} else if(value == "locking_mode") {
if(value == "0")
value = "\"normal\"";
else if(value == "1")
value = "\"exclusive\"";
else
value = "\"normal\"";
} else if(pragma == "encoding") {
if(value == "0")
value = "\"utf-8\"";
else if(value == "1")
value = "\"utf-16\"";
else if(value == "2")
value = "\"utf-16le\"";
else if(value == "3")
value = "\"utf-16be\"";
else
value = "\"utf-8\"";
}
// Set the pragma value
QString sql = QString("PRAGMA %1 = %2;").arg(pragma).arg(value);
if(!executeSQL(sql))
{
QString sql = QString("PRAGMA %1 = \"%2\";").arg(pragma).arg(value);
//qDebug(sql.toStdString().c_str());
setDirty(false);
executeSQL("COMMIT;", false, false); // commit the current transaction
bool res = executeSQL(sql, false, true); // PRAGMA statements are usually not transaction bound, so we can't revert
setRestorePoint();
if( !res )
qDebug(QObject::tr("Error setting pragma %1 to %2: %3").arg(pragma).arg(value).arg(lastErrorMessage).toStdString().c_str());
return false;
} else {
return true;
}
return res;
}
bool DBBrowserDB::setPragma(const QString& pragma, const QString& value, QString& originalvalue)
{
if( originalvalue != value )
{
if( setPragma(pragma, value))
{
originalvalue = value;
return true;
}
}
return false;
}
bool DBBrowserDB::setPragma(const QString& pragma, int value, int& originalvalue)
{
if( originalvalue != value )
{
QString val = QString::number(value);
QString origval = QString::number(originalvalue);
if( setPragma(pragma, val, origval))
{
originalvalue = value;
}
}
return false;
}