Comments on: Adding iTunes-style search to your Core Data application http://www.cimgf.com/2008/11/25/adding-itunes-style-search-to-your-core-data-application/ Taglines are for Windows programmers Fri, 12 Mar 2010 03:21:12 -0500 http://wordpress.org/?v=2.9.2 hourly 1 By: Predicates looking for Name » http://www.cimgf.com/2008/11/25/adding-itunes-style-search-to-your-core-data-application/comment-page-1/#comment-1256 Predicates looking for Name » Thu, 11 Feb 2010 13:03:55 +0000 http://www.cimgf.com/?p=381#comment-1256 <p>[...] a nice solution for this iTunes like search from Cocoa Is My Girlfriend. Category: Core Data You can follow any responses to this entry through the RSS 2.0 feed. [...]</p> [...] a nice solution for this iTunes like search from Cocoa Is My Girlfriend. Category: Core Data You can follow any responses to this entry through the RSS 2.0 feed. [...]

]]> By: Fraser Hess http://www.cimgf.com/2008/11/25/adding-itunes-style-search-to-your-core-data-application/comment-page-1/#comment-1132 Fraser Hess Sat, 24 Jan 2009 23:56:55 +0000 http://www.cimgf.com/?p=381#comment-1132 <p>Good question, cause I'm not sure. However even if we concatenated the fields together, we'd still have to rip apart the search string and look for each term individually since we're searching for terms and not and exact phrase.</p> Good question, cause I’m not sure. However even if we concatenated the fields together, we’d still have to rip apart the search string and look for each term individually since we’re searching for terms and not and exact phrase.

]]> By: Fraser Hess http://www.cimgf.com/2008/11/25/adding-itunes-style-search-to-your-core-data-application/comment-page-1/#comment-1131 Fraser Hess Sat, 24 Jan 2009 23:53:01 +0000 http://www.cimgf.com/?p=381#comment-1131 <p>I don't think your predicate format will get my desired result: searching for every term in every field. The big problem I ran into is that the predicate format has to change when the user adds a second term. One term: "world" in name OR "world" in artist OR "world" in album Two terms: "world" in name OR "world" in artist OR "world" in album <strong>AND</strong> "mayer" in name OR "mayer" in artist OR "mayer" in album</p> <p>I hope that clears up my intention and desired result.</p> <p>Also, in my app I don't want the user to have to think about what field they are searching in. I just want them to type.</p> I don’t think your predicate format will get my desired result: searching for every term in every field. The big problem I ran into is that the predicate format has to change when the user adds a second term. One term: “world” in name OR “world” in artist OR “world” in album Two terms: “world” in name OR “world” in artist OR “world” in album AND “mayer” in name OR “mayer” in artist OR “mayer” in album

I hope that clears up my intention and desired result.

Also, in my app I don’t want the user to have to think about what field they are searching in. I just want them to type.

]]> By: Jonathan Badeen http://www.cimgf.com/2008/11/25/adding-itunes-style-search-to-your-core-data-application/comment-page-1/#comment-1127 Jonathan Badeen Sun, 04 Jan 2009 20:46:16 +0000 http://www.cimgf.com/?p=381#comment-1127 <p>Just in case you didn't know, you can very easily add this functionality via the predicate binding in Interface Builder. In my case I am binding to an array controller w/ a controller key of filterPredicate and my predicate format is as follows:</p> <p>firstName contains[c] $value || lastName contains[c] $value || agent contains[c] $value || role.title contains[c] $value</p> <p>I also have additional predicate bindings for each individual field so the user can click on the arrow to choose more specifically what they want to search.</p> Just in case you didn’t know, you can very easily add this functionality via the predicate binding in Interface Builder. In my case I am binding to an array controller w/ a controller key of filterPredicate and my predicate format is as follows:

firstName contains[c] $value || lastName contains[c] $value || agent contains[c] $value || role.title contains[c] $value

I also have additional predicate bindings for each individual field so the user can click on the arrow to choose more specifically what they want to search.

]]> By: benzado http://www.cimgf.com/2008/11/25/adding-itunes-style-search-to-your-core-data-application/comment-page-1/#comment-1091 benzado Wed, 26 Nov 2008 02:09:34 +0000 http://www.cimgf.com/?p=381#comment-1091 <p>How well does that perform?</p> <p>An alternative would be to maintain an indexed "all text" field that contains the concatenation of all the text of the other fields. Then the query need only be performed against one index.</p> How well does that perform?

An alternative would be to maintain an indexed “all text” field that contains the concatenation of all the text of the other fields. Then the query need only be performed against one index.

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