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POObjective C, libxml2 memory leak when parsing xml
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  1. POObjective C, libxml2 memory leak when parsing xml
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    copied!<p>I am relatively new to objective C and coming from Java the whole memory management didn't completely got to me.</p> <p>I am using libxml2 to parse xml data and when I run my program with performance tools I get memory leaks and it says Responsible Library is libxml2.2.dylib.</p> <p>Below the code where I use the xml library. Does anyone see obvious mistakes I do? Let me know if you need more details.</p> <p>Cheers, Stephan</p> <pre><code>- (void)fetchedXML:(GTMHTTPFetcher *)fetcher finishedWithData:(NSData *)retrievedData error:(NSError *)error{ if (retrievedData) { if(error==nil){ NSString *xpathQueryString = nil; NSArray *nodes = nil; //get total amount of persons xpathQueryString = @"//data/Person"; nodes = PerformXMLXPathQuery(retrievedData, xpathQueryString); int personCount = [nodes count]; for (int i=1; i&lt;=personCount; i++) { NSString *position = [NSString stringWithFormat:@"%d", i]; NSArray *matchNodes = nil; xpathQueryString = [NSString stringWithFormat:@"//data/Person[%@]/FirstName/text()", position]; matchNodes = PerformXMLXPathQuery(retrievedData, xpathQueryString); NSString *personFirstName = [XMLHelper fetchContent:matchNodes]; xpathQueryString = [NSString stringWithFormat:@"//data/Person[%@]/LastName/text()", position]; matchNodes = PerformXMLXPathQuery(retrievedData, xpathQueryString); NSString *personLastName = [XMLHelper fetchContent:matchNodes]; xpathQueryString = [NSString stringWithFormat:@"//data/Person[%@]/Job/text()", position]; matchNodes = PerformXMLXPathQuery(retrievedData, xpathQueryString); NSString *personJob = [XMLHelper fetchContent:matchNodes]; [Person storePerson:managedObjectContext personId:position firstName:personFirstName lastName:personLastName job:personJob]; } } } } </code></pre> <p>That's the code in the LinkHelper class.</p> <pre><code>+ (NSString *)fetchContent:(NSArray *)nodes { NSString *result = nil; for ( NSDictionary *node in nodes ) { for ( id key in node ) { if( [key isEqualToString:@"nodeContent"] ) { result = [node objectForKey:key]; } } } return result; </code></pre> <p>}</p>
 

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