From da8b958902b41f733b2c346836a1c5bdab3abc70 Mon Sep 17 00:00:00 2001 From: stuconnolly Date: Tue, 19 Oct 2010 18:15:09 +0000 Subject: Because the process of editing a trigger involves droping and then re-creating it, if an error occurs when attempting to re-create it remember to then re-create the original one. Fixes issue #795. --- Source/SPTableTriggers.m | 93 ++++++++++++++++++++++++++++-------------------- 1 file changed, 55 insertions(+), 38 deletions(-) (limited to 'Source/SPTableTriggers.m') diff --git a/Source/SPTableTriggers.m b/Source/SPTableTriggers.m index b9956e3c..86f0aa53 100644 --- a/Source/SPTableTriggers.m +++ b/Source/SPTableTriggers.m @@ -145,43 +145,50 @@ - (IBAction)confirmAddTrigger:(id)sender { [self closeTriggerSheet:self]; + + NSString *createTriggerStatementTemplate = @"CREATE TRIGGER %@ %@ %@ ON %@ FOR EACH ROW %@"; // MySQL doesn't have ALTER TRIGGER, so we delete the old one and add a new one. // In case of error, all the old trigger info is kept in buffer - if(isEdit && [editTriggerName length]>0) + if (isEdit && [editTriggerName length] > 0) { NSString *queryDelete = [NSString stringWithFormat:@"DROP TRIGGER %@.%@", [[tableDocumentInstance database] backtickQuotedString], [editTriggerName backtickQuotedString]]; + [connection queryString:queryDelete]; - if([connection queryErrored]) - { - SPBeginAlertSheet(NSLocalizedString(@"Unable to delete trigger", - @"error deleting trigger message"), + + if ([connection queryErrored]) { + SPBeginAlertSheet(NSLocalizedString(@"Unable to delete trigger", @"error deleting trigger message"), NSLocalizedString(@"OK", @"OK button"), nil, nil, [NSApp mainWindow], nil, nil, nil, - [NSString stringWithFormat:NSLocalizedString(@"The selected trigger couldn't be deleted.\n\nMySQL said: %@", - @"error deleting trigger informative message"), + [NSString stringWithFormat:NSLocalizedString(@"The selected trigger couldn't be deleted.\n\nMySQL said: %@", @"error deleting trigger informative message"), [connection getLastErrorMessage]]); + + return; } } NSString *triggerName = [triggerNameTextField stringValue]; NSString *triggerActionTime = ([triggerActionTimePopUpButton indexOfSelectedItem]) ? @"AFTER" : @"BEFORE"; NSString *triggerEvent = @""; - switch([triggerEventPopUpButton indexOfSelectedItem]) { + + switch ([triggerEventPopUpButton indexOfSelectedItem]) + { case 0: - triggerEvent = @"INSERT"; - break; + triggerEvent = @"INSERT"; + break; case 1: - triggerEvent = @"UPDATE"; - break; - case 2:triggerEvent = @"DELETE"; - break; + triggerEvent = @"UPDATE"; + break; + case 2: + triggerEvent = @"DELETE"; + break; } + NSString *triggerStatement = [triggerStatementTextView string]; - NSString *query = [NSString stringWithFormat:@"CREATE TRIGGER %@ %@ %@ ON %@ FOR EACH ROW %@", + NSString *query = [NSString stringWithFormat:createTriggerStatementTemplate, [triggerName backtickQuotedString], triggerActionTime, triggerEvent, @@ -192,16 +199,27 @@ [connection queryString:query]; if (([connection queryErrored])) { - SPBeginAlertSheet(NSLocalizedString(@"Error creating trigger", - @"error creating trigger message"), + SPBeginAlertSheet(NSLocalizedString(@"Error creating trigger", @"error creating trigger message"), NSLocalizedString(@"OK", @"OK button"), nil, nil, [NSApp mainWindow], nil, nil, nil, - [NSString stringWithFormat:NSLocalizedString(@"The specified trigger was unable to be created.\n\nMySQL said: %@", - @"error creating trigger informative message"), + [NSString stringWithFormat:NSLocalizedString(@"The specified trigger was unable to be created.\n\nMySQL said: %@", @"error creating trigger informative message"), [connection getLastErrorMessage]]); - // In case of error, restore the original trigger statement - if(isEdit) { + + // In case of error, re-create the original trigger statement + if (isEdit) { [triggerStatementTextView setString:editTriggerStatement]; + + NSString *query = [NSString stringWithFormat:createTriggerStatementTemplate, + [editTriggerName backtickQuotedString], + editTriggerActionTime, + editTriggerEvent, + [editTriggerTableName backtickQuotedString], + editTriggerStatement]; + + // If this attempt to re-create the trigger failed, then we're screwed as we've just lost the user's + // data, but they had a backup and everything's cool, right? Should we be displaying an error here + // or will it interfere with the one above? + [connection queryString:query]; } } else { @@ -210,10 +228,9 @@ } // After Edit, rename button to Add - if(isEdit) - { + if (isEdit) { isEdit = NO; - [confirmAddTriggerButton setTitle: NSLocalizedString(@"Add", @"Add trigger button")]; + [confirmAddTriggerButton setTitle:NSLocalizedString(@"Add", @"Add trigger button label")]; } [self _refreshTriggerDataForcingCacheRefresh:YES]; @@ -224,7 +241,6 @@ */ - (IBAction)addTrigger:(id)sender { - [NSApp beginSheet:addTriggerPanel modalForWindow:[tableDocumentInstance parentWindow] modalDelegate:self @@ -298,41 +314,42 @@ if ([tableDocumentInstance isWorking]) return NO; // Start Edit panel - if([triggerData count] > rowIndex && [triggerData objectAtIndex:rowIndex] != NSNotFound) + if (([triggerData count] > rowIndex) && ([triggerData objectAtIndex:rowIndex] != NSNotFound)) { NSDictionary *trigger = [triggerData objectAtIndex:rowIndex]; - // Temporary save original name and statement (we need them later) - editTriggerName = [trigger objectForKey:@"trigger"]; - editTriggerStatement = [trigger objectForKey:@"statement"]; + // Cache the original trigger's name and statement in the event that the editing process fails and + // we need to recreate it. + editTriggerName = [trigger objectForKey:@"trigger"]; + editTriggerStatement = [trigger objectForKey:@"statement"]; + editTriggerTableName = [trigger objectForKey:@"table"]; + editTriggerEvent = [trigger objectForKey:@"event"]; + editTriggerActionTime = [trigger objectForKey:@"timing"]; [triggerNameTextField setStringValue:editTriggerName]; [triggerStatementTextView setString:editTriggerStatement]; // Timin title is different then what we have saved in the database (case difference) - for(int i=0;i<[[triggerActionTimePopUpButton itemArray] count]; i++) + for (NSUInteger i = 0; i < [[triggerActionTimePopUpButton itemArray] count]; i++) { - if([[[triggerActionTimePopUpButton itemTitleAtIndex:i] uppercaseString] - isEqualToString:[[trigger objectForKey:@"timing"] uppercaseString]]) - { + if ([[[triggerActionTimePopUpButton itemTitleAtIndex:i] uppercaseString] isEqualToString:[[trigger objectForKey:@"timing"] uppercaseString]]) { [triggerActionTimePopUpButton selectItemAtIndex:i]; break; } } // Event title is different then what we have saved in the database (case difference) - for(int i=0;i<[[triggerEventPopUpButton itemArray] count]; i++) + for (NSUInteger i = 0; i < [[triggerEventPopUpButton itemArray] count]; i++) { - if([[[triggerEventPopUpButton itemTitleAtIndex:i] uppercaseString] - isEqualToString:[[trigger objectForKey:@"event"] uppercaseString]]) - { + if ([[[triggerEventPopUpButton itemTitleAtIndex:i] uppercaseString] isEqualToString:[[trigger objectForKey:@"event"] uppercaseString]]) { [triggerEventPopUpButton selectItemAtIndex:i]; break; } } // Change button label from Add to Edit - [confirmAddTriggerButton setTitle:NSLocalizedString(@"Edit", @"Edit trigger button")]; + [confirmAddTriggerButton setTitle:NSLocalizedString(@"Save", @"Save trigger button label")]; + isEdit = YES; [NSApp beginSheet:addTriggerPanel -- cgit v1.2.3