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Posted to dev@cordova.apache.org by "Shazron Abdullah (Commented) (JIRA)" <ji...@apache.org> on 2012/03/28 02:31:21 UTC

[jira] [Commented] (CB-402) Improve Contacts search taking a long time by using (NSArray*)filteredArrayUsingPredicate:(NSPredicate*)predicate

    [ https://issues.apache.org/jira/browse/CB-402?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13240079#comment-13240079 ] 

Shazron Abdullah commented on CB-402:
-------------------------------------

Predicate Programming Guide: http://developer.apple.com/library/ios/#documentation/Cocoa/Conceptual/Predicates/predicates.html#//apple_ref/doc/uid/TP40001789
                
> Improve Contacts search taking a long time by using (NSArray*)filteredArrayUsingPredicate:(NSPredicate*)predicate
> -----------------------------------------------------------------------------------------------------------------
>
>                 Key: CB-402
>                 URL: https://issues.apache.org/jira/browse/CB-402
>             Project: Apache Callback
>          Issue Type: Improvement
>          Components: iOS
>            Reporter: Shazron Abdullah
>            Assignee: Shazron Abdullah
>
> We have to analyze this first to see if it is a big problem, with a huge N. I believe it is.
> Right now our search method is O( n ), while using Apple's search method it is possibly O( log n ) - but that's just a guess if I assume internally they use a binary search.
> Steps:
> 1. Grab all the contacts in a NSArray through ABAddressBookCopyArrayOfAllPeople
> 2. Construct a NSPredicate for the filter, and call filteredArrayUsingPredicate on the NSArray returned in step 1.
> 3. Convert the NSArray returned in step 2. to our CDVContact objects

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