• fixed SPArrayAdditions method 'componentsJoinedByCommas' to use a mutable string to avoid crashes if array has a very large number of items (malloc error due to reassigning a NSString pointer)

• added to SPTableData method - (NSArray *) primaryKeyColumnNames
- returns all column names which are set as PRIMARY KEYs
- return nil if no PRIMARY KEY is set
• improved the deletion of rows
- if current table has only one PRIMARY KEY field delete all rows via DELETE FROM table WHERE pri_key IN (…) whereby the deletion query will be splitted into 256k chunks

Note: line 1790ff 
It has to be implemented a workaround for tables with more than one PRIMARY KEY – maybe via DELETE FROM table WHERE ( (pri_key1='…' AND pri_key2='…') OR (… AND …) OR … ) splitted in 256k chunks as well

1 files changed, 5 insertions, 5 deletions

diff --git a/Source/SPArrayAdditions.m b/Source/SPArrayAdditions.m
index e19869fa..bbc732af 100644
--- a/Source/SPArrayAdditions.m
+++ b/Source/SPArrayAdditions.m
@@ -44,15 +44,15 @@
 
 - (NSString *)componentsJoinedByCommas
 {
-	NSString *result = [NSString string];
+	NSMutableString *result = [NSMutableString string];
+	[result setString:@""];
+	
 	for (NSString *component in self)
 	{
 		if ([result length])
-		{
-			result = [result stringByAppendingString:@","];
-		}
+			[result appendString:@","];
 
-		result = [result stringByAppendingString:component];
+		[result appendString:component];
 	}
 	return result;
 }