On Mar 24, 2011, at 12:06 PM, Siegfried wrote:
> So, after discussing some methods to import and export a CoreData database, I
> ended up sticking with my initial XML idea.
>
> Now I'm stuck in a problem when parsing that is probably simple, but I can't
> solve. Basically, my XML is like this:
>
> <elem1>
> <child1>Value</child1>
> <child2>Value</child2>
> <child3>Value</child3>
> </elem1>
> <elem2>
> <child1>Value</child1>
> <child2>Value</child2>
> <child3>Value</child3>
> </elem2>
[snip]
> When parsing with NSXMLParser, everything runs properly (well, almost) except
> for the fact that every property (child elements here) from every entity
> (elem here) gets the value from the last imported property, child3 in this
> case.
> -(void)parser: ... didEndElement {
>
> // Database - Save the Import
> if ([elementName isEqualToString:@"database"]) {
>
> NSError *error;
> if (![self.managedObjectContext save:&error]) {
> NSLog(@"There was an error while saving "
> "the imported database: %@", error);
> }
> }
>
> // Attribute
> if ([elementName isEqualToString:kAttrName]) {
> [currentEntity setValue:currentXMLValue forKey:kAttrName];
> return;
> }
You need to copy currentXMLValue, because in your code, every item that refers
to it ends up referring to the same mutable string, which will change every
time the parser:foundCharacters: method is called.
NSString *newValue = [currentXMLValue copy];
[currentEntity setValue:newValue forKey:kAttrName];
[newValue release];
Assigning strings like you did works with immutable ones, but not with mutable
ones.
Hank
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