• field mapping sheet is now document-modal instead of blocking SP entirely

• if an error occurred while retrieving column or index data in Structure pane reset Structure pane to a stable status, display the error message, and reload Tables List table due to the fact the it's very likely that SP tries to retrieve data from a table which doesn't exist anymore
• fixed spelling of "occurred"

Note: NOT YET DONE: if in Structure view the actual underlying table was deleted or renamed by an other mysql event and the user tries to add/change a field do suppress this attempt safely  

5 files changed, 269 insertions, 35 deletions

diff --git a/Interfaces/English.lproj/DBView.xib b/Interfaces/English.lproj/DBView.xib
index a4e8d47f..657d8b75 100644
--- a/Interfaces/English.lproj/DBView.xib
+++ b/Interfaces/English.lproj/DBView.xib
@@ -23,8 +23,9 @@
 		</object>
 		<object class="NSMutableArray" key="IBDocument.EditedObjectIDs">
 			<bool key="EncodedWithXMLCoder">YES</bool>
-			<integer value="6232"/>
+			<integer value="4566"/>
 			<integer value="5"/>
+			<integer value="6232"/>
 		</object>
 		<object class="NSArray" key="IBDocument.PluginDependencies">
 			<bool key="EncodedWithXMLCoder">YES</bool>
@@ -7975,7 +7976,7 @@ IGRvIHlvdSB3YW50IHRvIGFkZCBmb3IgdGhpcyBmaWVsZD8</string>
 				<string key="NSWindowContentMaxSize">{3.40282e+38, 3.40282e+38}</string>
 				<string key="NSWindowContentMinSize">{213, 107}</string>
 				<object class="NSView" key="NSWindowView" id="860968037">
-					<nil key="NSNextResponder"/>
+					<reference key="NSNextResponder"/>
 					<int key="NSvFlags">256</int>
 					<object class="NSMutableArray" key="NSSubviews">
 						<bool key="EncodedWithXMLCoder">YES</bool>
@@ -7984,6 +7985,7 @@ IGRvIHlvdSB3YW50IHRvIGFkZCBmb3IgdGhpcyBmaWVsZD8</string>
 							<int key="NSvFlags">264</int>
 							<string key="NSFrame">{{20, 233}, {140, 14}}</string>
 							<reference key="NSSuperview" ref="860968037"/>
+							<reference key="NSWindow"/>
 							<bool key="NSEnabled">YES</bool>
 							<object class="NSTextFieldCell" key="NSCell" id="326519111">
 								<int key="NSCellFlags">67239424</int>
@@ -8010,6 +8012,7 @@ IGRvIHlvdSB3YW50IHRvIGFkZCBmb3IgdGhpcyBmaWVsZD8</string>
 											<int key="NSvFlags">2322</int>
 											<string key="NSFrameSize">{352, 14}</string>
 											<reference key="NSSuperview" ref="158897172"/>
+											<reference key="NSWindow"/>
 											<object class="NSTextContainer" key="NSTextContainer" id="197710090">
 												<object class="NSLayoutManager" key="NSLayoutManager">
 													<object class="NSTextStorage" key="NSTextStorage">
@@ -8059,6 +8062,7 @@ IGRvIHlvdSB3YW50IHRvIGFkZCBmb3IgdGhpcyBmaWVsZD8</string>
 									</object>
 									<string key="NSFrame">{{1, 1}, {352, 178}}</string>
 									<reference key="NSSuperview" ref="972781700"/>
+									<reference key="NSWindow"/>
 									<reference key="NSNextKeyView" ref="347971361"/>
 									<reference key="NSDocView" ref="347971361"/>
 									<reference key="NSBGColor" ref="449903125"/>
@@ -8070,6 +8074,7 @@ IGRvIHlvdSB3YW50IHRvIGFkZCBmb3IgdGhpcyBmaWVsZD8</string>
 									<int key="NSvFlags">256</int>
 									<string key="NSFrame">{{353, 1}, {11, 178}}</string>
 									<reference key="NSSuperview" ref="972781700"/>
+									<reference key="NSWindow"/>
 									<int key="NSsFlags">256</int>
 									<reference key="NSTarget" ref="972781700"/>
 									<string key="NSAction">_doScroller:</string>
@@ -8080,6 +8085,7 @@ IGRvIHlvdSB3YW50IHRvIGFkZCBmb3IgdGhpcyBmaWVsZD8</string>
 									<int key="NSvFlags">-2147483392</int>
 									<string key="NSFrame">{{-100, -100}, {87, 18}}</string>
 									<reference key="NSSuperview" ref="972781700"/>
+									<reference key="NSWindow"/>
 									<int key="NSsFlags">257</int>
 									<reference key="NSTarget" ref="972781700"/>
 									<string key="NSAction">_doScroller:</string>
@@ -8089,6 +8095,7 @@ IGRvIHlvdSB3YW50IHRvIGFkZCBmb3IgdGhpcyBmaWVsZD8</string>
 							</object>
 							<string key="NSFrame">{{20, 45}, {365, 180}}</string>
 							<reference key="NSSuperview" ref="860968037"/>
+							<reference key="NSWindow"/>
 							<reference key="NSNextKeyView" ref="158897172"/>
 							<int key="NSsFlags">18</int>
 							<reference key="NSVScroller" ref="84024470"/>
@@ -8100,6 +8107,7 @@ IGRvIHlvdSB3YW50IHRvIGFkZCBmb3IgdGhpcyBmaWVsZD8</string>
 							<int key="NSvFlags">257</int>
 							<string key="NSFrame">{{314, 13}, {76, 28}}</string>
 							<reference key="NSSuperview" ref="860968037"/>
+							<reference key="NSWindow"/>
 							<bool key="NSEnabled">YES</bool>
 							<object class="NSButtonCell" key="NSCell" id="693776804">
 								<int key="NSCellFlags">67239424</int>
@@ -8118,6 +8126,8 @@ IGRvIHlvdSB3YW50IHRvIGFkZCBmb3IgdGhpcyBmaWVsZD8</string>
 						</object>
 					</object>
 					<string key="NSFrameSize">{405, 267}</string>
+					<reference key="NSSuperview"/>
+					<reference key="NSWindow"/>
 				</object>
 				<string key="NSScreenRect">{{0, 0}, {1440, 878}}</string>
 				<string key="NSMinSize">{213, 129}</string>
@@ -8541,7 +8551,7 @@ IGRvIHlvdSB3YW50IHRvIGFkZCBmb3IgdGhpcyBmaWVsZD8</string>
 				<string key="NSWindowContentMaxSize">{3.40282e+38, 3.40282e+38}</string>
 				<string key="NSWindowContentMinSize">{350, 250}</string>
 				<object class="NSView" key="NSWindowView" id="1024486775">
-					<nil key="NSNextResponder"/>
+					<reference key="NSNextResponder"/>
 					<int key="NSvFlags">256</int>
 					<object class="NSMutableArray" key="NSSubviews">
 						<bool key="EncodedWithXMLCoder">YES</bool>
@@ -8926,6 +8936,7 @@ IGRvIHlvdSB3YW50IHRvIGFkZCBmb3IgdGhpcyBmaWVsZD8</string>
 						</object>
 					</object>
 					<string key="NSFrameSize">{465, 294}</string>
+					<reference key="NSSuperview"/>
 				</object>
 				<string key="NSScreenRect">{{0, 0}, {1920, 1178}}</string>
 				<string key="NSMinSize">{350, 272}</string>
@@ -12391,22 +12402,6 @@ IGRvIHlvdSB3YW50IHRvIGFkZCBmb3IgdGhpcyBmaWVsZD8</string>
 					<int key="connectionID">4524</int>
 				</object>
 				<object class="IBConnectionRecord">
-					<object class="IBActionConnection" key="connection">
-						<string key="label">closeSheet:</string>
-						<reference key="source" ref="225526897"/>
-						<reference key="destination" ref="322520441"/>
-					</object>
-					<int key="connectionID">4594</int>
-				</object>
-				<object class="IBConnectionRecord">
-					<object class="IBActionConnection" key="connection">
-						<string key="label">closeSheet:</string>
-						<reference key="source" ref="225526897"/>
-						<reference key="destination" ref="537769422"/>
-					</object>
-					<int key="connectionID">4596</int>
-				</object>
-				<object class="IBConnectionRecord">
 					<object class="IBOutletConnection" key="connection">
 						<string key="label">recordCountLabel</string>
 						<reference key="source" ref="225526897"/>
@@ -15199,6 +15194,22 @@ IGRvIHlvdSB3YW50IHRvIGFkZCBmb3IgdGhpcyBmaWVsZD8</string>
 					</object>
 					<int key="connectionID">6752</int>
 				</object>
+				<object class="IBConnectionRecord">
+					<object class="IBActionConnection" key="connection">
+						<string key="label">closeFieldMapperSheet:</string>
+						<reference key="source" ref="225526897"/>
+						<reference key="destination" ref="322520441"/>
+					</object>
+					<int key="connectionID">6758</int>
+				</object>
+				<object class="IBConnectionRecord">
+					<object class="IBActionConnection" key="connection">
+						<string key="label">closeFieldMapperSheet:</string>
+						<reference key="source" ref="225526897"/>
+						<reference key="destination" ref="537769422"/>
+					</object>
+					<int key="connectionID">6759</int>
+				</object>
 			</object>
 			<object class="IBMutableOrderedSet" key="objectRecords">
 				<object class="NSArray" key="orderedObjects">
@@ -23548,9 +23559,9 @@ IGRvIHlvdSB3YW50IHRvIGFkZCBmb3IgdGhpcyBmaWVsZD8</string>
 					<string>com.apple.InterfaceBuilder.CocoaPlugin</string>
 					<string>com.apple.InterfaceBuilder.CocoaPlugin</string>
 					<string>com.apple.InterfaceBuilder.CocoaPlugin</string>
-					<string>{{603, 243}, {465, 294}}</string>
+					<string>{{315, 449}, {465, 294}}</string>
 					<string>com.apple.InterfaceBuilder.CocoaPlugin</string>
-					<string>{{603, 243}, {465, 294}}</string>
+					<string>{{315, 449}, {465, 294}}</string>
 					<integer value="1"/>
 					<string>{{387, 725}, {432, 282}}</string>
 					<integer value="0"/>
@@ -23661,10 +23672,10 @@ IGRvIHlvdSB3YW50IHRvIGFkZCBmb3IgdGhpcyBmaWVsZD8</string>
 					<string>com.apple.InterfaceBuilder.CocoaPlugin</string>
 					<integer value="1"/>
 					<string>com.apple.InterfaceBuilder.CocoaPlugin</string>
-					<string>{{239, 357}, {944, 550}}</string>
+					<string>{{116, 357}, {944, 550}}</string>
 					<string>com.apple.InterfaceBuilder.CocoaPlugin</string>
 					<boolean value="NO"/>
-					<string>{{239, 357}, {944, 550}}</string>
+					<string>{{116, 357}, {944, 550}}</string>
 					<integer value="1"/>
 					<integer value="1"/>
 					<string>{{62, 352}, {845, 504}}</string>
@@ -24850,7 +24861,7 @@ IGRvIHlvdSB3YW50IHRvIGFkZCBmb3IgdGhpcyBmaWVsZD8</string>
 				</object>
 			</object>
 			<nil key="sourceID"/>
-			<int key="maxID">6752</int>
+			<int key="maxID">6759</int>
 		</object>
 		<object class="IBClassDescriber" key="IBDocument.Classes">
 			<object class="NSMutableArray" key="referencedPartialClassDescriptions">
@@ -26434,6 +26445,169 @@ IGRvIHlvdSB3YW50IHRvIGFkZCBmb3IgdGhpcyBmaWVsZD8</string>
 					</object>
 				</object>
 			</object>
+			<object class="NSMutableArray" key="referencedPartialClassDescriptionsV3.1+">
+				<bool key="EncodedWithXMLCoder">YES</bool>
+				<object class="IBPartialClassDescription">
+					<string key="className">TableDump</string>
+					<string key="superclassName">NSObject</string>
+					<object class="NSMutableDictionary" key="actions">
+						<bool key="EncodedWithXMLCoder">YES</bool>
+						<object class="NSArray" key="dict.sortedKeys">
+							<bool key="EncodedWithXMLCoder">YES</bool>
+							<string>cancelProgressBar:</string>
+							<string>changeFormat:</string>
+							<string>changeTable:</string>
+							<string>closeFieldMapperSheet:</string>
+							<string>closeSheet:</string>
+							<string>panelSelectionDidChange:</string>
+							<string>reloadTables:</string>
+							<string>selectTables:</string>
+							<string>stepRow:</string>
+							<string>switchInput:</string>
+							<string>switchTab:</string>
+						</object>
+						<object class="NSMutableArray" key="dict.values">
+							<bool key="EncodedWithXMLCoder">YES</bool>
+							<string>id</string>
+							<string>id</string>
+							<string>id</string>
+							<string>id</string>
+							<string>id</string>
+							<string>id</string>
+							<string>id</string>
+							<string>id</string>
+							<string>id</string>
+							<string>id</string>
+							<string>id</string>
+						</object>
+					</object>
+					<object class="NSMutableDictionary" key="outlets">
+						<bool key="EncodedWithXMLCoder">YES</bool>
+						<object class="NSArray" key="dict.sortedKeys">
+							<bool key="EncodedWithXMLCoder">YES</bool>
+							<string>addCreateTableSwitch</string>
+							<string>addDropTableSwitch</string>
+							<string>addErrorsSwitch</string>
+							<string>addTableContentSwitch</string>
+							<string>csvFullStreamingSwitch</string>
+							<string>customQueryInstance</string>
+							<string>errorsSheet</string>
+							<string>errorsView</string>
+							<string>exportCSVView</string>
+							<string>exportDumpTableView</string>
+							<string>exportDumpView</string>
+							<string>exportFieldNamesSwitch</string>
+							<string>exportFieldsEnclosedField</string>
+							<string>exportFieldsEscapedField</string>
+							<string>exportFieldsTerminatedField</string>
+							<string>exportLinesTerminatedField</string>
+							<string>exportMultipleCSVTableView</string>
+							<string>exportMultipleCSVView</string>
+							<string>exportMultipleFieldNamesSwitch</string>
+							<string>exportMultipleFieldsEnclosedField</string>
+							<string>exportMultipleFieldsEscapedField</string>
+							<string>exportMultipleFieldsTerminatedField</string>
+							<string>exportMultipleLinesTerminatedField</string>
+							<string>exportMultipleXMLTableView</string>
+							<string>exportMultipleXMLView</string>
+							<string>exportTabBar</string>
+							<string>exportTableList</string>
+							<string>exportToolbar</string>
+							<string>exportWindow</string>
+							<string>fieldMappingPopup</string>
+							<string>fieldMappingSheet</string>
+							<string>fieldMappingTableView</string>
+							<string>importCSVBox</string>
+							<string>importCSVView</string>
+							<string>importFieldNamesSwitch</string>
+							<string>importFieldsEnclosedField</string>
+							<string>importFieldsEscapedField</string>
+							<string>importFieldsTerminatedField</string>
+							<string>importFormatPopup</string>
+							<string>importLinesTerminatedField</string>
+							<string>multiCSVFullStreamingSwitch</string>
+							<string>multiXMLFullStreamingSwitch</string>
+							<string>recordCountLabel</string>
+							<string>rowDownButton</string>
+							<string>rowUpButton</string>
+							<string>singleProgressBar</string>
+							<string>singleProgressSheet</string>
+							<string>singleProgressText</string>
+							<string>singleProgressTitle</string>
+							<string>sqlFullStreamingSwitch</string>
+							<string>tableContentInstance</string>
+							<string>tableDataInstance</string>
+							<string>tableDocumentInstance</string>
+							<string>tableSourceInstance</string>
+							<string>tableWindow</string>
+							<string>tablesListInstance</string>
+						</object>
+						<object class="NSMutableArray" key="dict.values">
+							<bool key="EncodedWithXMLCoder">YES</bool>
+							<string>id</string>
+							<string>id</string>
+							<string>id</string>
+							<string>id</string>
+							<string>id</string>
+							<string>id</string>
+							<string>id</string>
+							<string>id</string>
+							<string>id</string>
+							<string>id</string>
+							<string>id</string>
+							<string>id</string>
+							<string>id</string>
+							<string>id</string>
+							<string>id</string>
+							<string>id</string>
+							<string>id</string>
+							<string>id</string>
+							<string>id</string>
+							<string>id</string>
+							<string>id</string>
+							<string>id</string>
+							<string>id</string>
+							<string>id</string>
+							<string>id</string>
+							<string>id</string>
+							<string>id</string>
+							<string>id</string>
+							<string>id</string>
+							<string>id</string>
+							<string>id</string>
+							<string>id</string>
+							<string>id</string>
+							<string>id</string>
+							<string>id</string>
+							<string>id</string>
+							<string>id</string>
+							<string>id</string>
+							<string>NSPopUpButton</string>
+							<string>id</string>
+							<string>id</string>
+							<string>id</string>
+							<string>id</string>
+							<string>id</string>
+							<string>id</string>
+							<string>id</string>
+							<string>id</string>
+							<string>id</string>
+							<string>id</string>
+							<string>id</string>
+							<string>id</string>
+							<string>id</string>
+							<string>id</string>
+							<string>id</string>
+							<string>id</string>
+							<string>id</string>
+						</object>
+					</object>
+					<object class="IBClassDescriptionSource" key="sourceIdentifier">
+						<string key="majorKey">IBDocumentRelativeSource</string>
+						<string key="minorKey">../../Source/TableDump.h</string>
+					</object>
+				</object>
+			</object>
 			<object class="NSMutableArray" key="referencedPartialClassDescriptionsV3.2+">
 				<bool key="EncodedWithXMLCoder">YES</bool>
 				<object class="IBPartialClassDescription">
diff --git a/Source/SPTableData.m b/Source/SPTableData.m
index 1c00758a..9dffd962 100644
--- a/Source/SPTableData.m
+++ b/Source/SPTableData.m
@@ -668,7 +668,7 @@
 		if ([mySQLConnection isConnected]) {
 			SPBeginAlertSheet(NSLocalizedString(@"Error", @"error"), NSLocalizedString(@"OK", @"OK button"), 
 					nil, nil, [NSApp mainWindow], self, nil, nil, nil,
-					[NSString stringWithFormat:NSLocalizedString(@"An error occured while retrieving view information.\nMySQL said: %@", @"message of panel when retrieving view information failed"),
+					[NSString stringWithFormat:NSLocalizedString(@"An error occurred while retrieving information.\nMySQL said: %@", @"message of panel when retrieving information failed"),
 					   [mySQLConnection getLastErrorMessage]]);
 		}
 		return nil;
@@ -686,7 +686,7 @@
 		if ([mySQLConnection isConnected]) {
 			SPBeginAlertSheet(NSLocalizedString(@"Error", @"error"), NSLocalizedString(@"OK", @"OK button"), 
 					nil, nil, [NSApp mainWindow], self, nil, nil, nil,
-					[NSString stringWithFormat:NSLocalizedString(@"An error occured while retrieving view information.\nMySQL said: %@", @"message of panel when retrieving view information failed"),
+					[NSString stringWithFormat:NSLocalizedString(@"An error occurred while retrieving information.\nMySQL said: %@", @"message of panel when retrieving information failed"),
 					   [mySQLConnection getLastErrorMessage]]);
 		}
 		return nil;
diff --git a/Source/TableDump.h b/Source/TableDump.h
index 3b89bdc5..7e1dc5cc 100644
--- a/Source/TableDump.h
+++ b/Source/TableDump.h
@@ -105,12 +105,15 @@
 	NSInteger fieldMappingCurrentRow;
 	NSUserDefaults *prefs;
 	BOOL progressCancelled;
+	
+	NSInteger fieldMapperSheetStatus;
 }
 
 // IBAction methods
 - (IBAction)reloadTables:(id)sender;
 - (IBAction)selectTables:(id)sender;
 - (IBAction)closeSheet:(id)sender;
+- (IBAction)closeFieldMapperSheet:(id)sender;
 - (IBAction)stepRow:(id)sender;
 - (IBAction)cancelProgressBar:(id)sender;
 
diff --git a/Source/TableDump.m b/Source/TableDump.m
index 15a8c344..b6f71c2c 100644
--- a/Source/TableDump.m
+++ b/Source/TableDump.m
@@ -103,6 +103,15 @@
 	[exportMultipleXMLTableView reloadData];
 }
 
+- (IBAction)closeFieldMapperSheet:(id)sender
+{
+
+	[NSApp endSheet:fieldMappingSheet returnCode:[sender tag]];
+	// [[self window] orderOut:self];
+	// 
+	//     [NSApp endSheet:fieldMappingSheet];
+}
+
 /**
  * Common method for ending modal sessions
  */
@@ -1190,23 +1199,29 @@
 	// Trigger a table selection and setup
 	[self changeTable:self];
 
+	fieldMapperSheetStatus = 1;
+
 	// Show fieldMapping sheet
 	[NSApp beginSheet:fieldMappingSheet
 	   modalForWindow:tableWindow
 		modalDelegate:self
-	   didEndSelector:nil
+	   didEndSelector:@selector(fieldMapperDidEndSheet:returnCode:contextInfo:)
 		  contextInfo:nil];
 
-	NSInteger code = [NSApp runModalForWindow:fieldMappingSheet];
-	[NSApp endSheet:fieldMappingSheet];
-	[fieldMappingSheet orderOut:nil];
+	// Wait for fieldMappingSheet
+	while (fieldMapperSheetStatus == 1)
+		usleep(100000);
 
-	// Return success or failure based on confirmation or cancellation
-	if (code) {
-		return TRUE;
-	} else {
+	if(fieldMapperSheetStatus == 2)
+		return YES;
+	else
 		return FALSE;
-	}
+
+}
+- (void)fieldMapperDidEndSheet:(NSWindow *)sheet returnCode:(NSInteger)returnCode contextInfo:(void *)contextInfo
+{
+	[sheet orderOut:self];
+	fieldMapperSheetStatus = (returnCode) ? 2 : 3;
 }
 
 /*
diff --git a/Source/TableSource.m b/Source/TableSource.m
index 1aa6185e..819bdea7 100644
--- a/Source/TableSource.m
+++ b/Source/TableSource.m
@@ -99,6 +99,27 @@ loads aTable, put it in an array, update the tableViewColumns and reload the tab
   
 	//perform queries and load results in array (each row as a dictionary)
 	tableSourceResult = [[mySQLConnection queryString:[NSString stringWithFormat:@"SHOW COLUMNS FROM %@", [selectedTable backtickQuotedString]]] retain];
+	if (![[mySQLConnection getLastErrorMessage] isEqualToString:@""]) {
+		NSString *errorMessage = [NSString stringWithString:[mySQLConnection getLastErrorMessage]];
+		[tableFields removeAllObjects];
+		[indexes removeAllObjects];
+		[tableSourceView reloadData];
+		[tablesListInstance updateTables:self];
+		[indexView reloadData];
+		[addFieldButton setEnabled:NO];
+		[copyFieldButton setEnabled:NO];
+		[removeFieldButton setEnabled:NO];
+		[addIndexButton setEnabled:NO];
+		[removeIndexButton setEnabled:NO];
+		[editTableButton setEnabled:NO];
+		[[NSNotificationCenter defaultCenter] postNotificationName:@"SMySQLQueryHasBeenPerformed" object:tableDocumentInstance];
+		SPBeginAlertSheet(NSLocalizedString(@"Error", @"error"), NSLocalizedString(@"OK", @"OK button"), 
+				nil, nil, [NSApp mainWindow], self, nil, nil, nil,
+				[NSString stringWithFormat:NSLocalizedString(@"An error occurred while retrieving information.\nMySQL said: %@", @"message of panel when retrieving information failed"),
+				   errorMessage]);
+		return;
+	}
+
 	[tableSourceResult setReturnDataAsStrings:YES];
 	
 	// listFieldsFromTable is broken in the current version of the framework (no back-ticks for table name)!
@@ -108,6 +129,27 @@ loads aTable, put it in an array, update the tableViewColumns and reload the tab
 	[tableSourceResult release];
 
 	indexResult = [[mySQLConnection queryString:[NSString stringWithFormat:@"SHOW INDEX FROM %@", [selectedTable backtickQuotedString]]] retain];
+	if (![[mySQLConnection getLastErrorMessage] isEqualToString:@""]) {
+		NSString *errorMessage = [NSString stringWithString:[mySQLConnection getLastErrorMessage]];
+		[tableFields removeAllObjects];
+		[indexes removeAllObjects];
+		[tableSourceView reloadData];
+		[tablesListInstance updateTables:self];
+		[indexView reloadData];
+		[addFieldButton setEnabled:NO];
+		[copyFieldButton setEnabled:NO];
+		[removeFieldButton setEnabled:NO];
+		[addIndexButton setEnabled:NO];
+		[removeIndexButton setEnabled:NO];
+		[editTableButton setEnabled:NO];
+		[[NSNotificationCenter defaultCenter] postNotificationName:@"SMySQLQueryHasBeenPerformed" object:tableDocumentInstance];
+		SPBeginAlertSheet(NSLocalizedString(@"Error", @"error"), NSLocalizedString(@"OK", @"OK button"), 
+				nil, nil, [NSApp mainWindow], self, nil, nil, nil,
+				[NSString stringWithFormat:NSLocalizedString(@"An error occurred while retrieving information.\nMySQL said: %@", @"message of panel when retrieving information failed"),
+				   errorMessage]);
+
+		return;
+	}
 	[indexResult setReturnDataAsStrings:YES];
 	//	[indexes setArray:[[self fetchResultAsArray:indexResult] retain]];
 	[indexes setArray:[self fetchResultAsArray:indexResult]];