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From "Samuel Michelot (Issue Comment Edited) (JIRA)" <j...@apache.org>
Subject [jira] [Issue Comment Edited] (CB-330) localStorage / SQLDatabase no longer persistent after iOS 5.01 Update
Date Wed, 21 Mar 2012 14:47:39 GMT

    [ https://issues.apache.org/jira/browse/CB-330?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13234388#comment-13234388
] 

Samuel Michelot edited comment on CB-330 at 3/21/12 2:46 PM:
-------------------------------------------------------------

After some testing, it looks like the plugin doesn't do the migration from WebKit folder to
the Caches folder. It should happens when users upgrade to iOS5.1 before that fix (before
upgrading the app with the backup fix). I know that sometime, the WebKit folder is completely
deleted during the iOS 5.1 update, but sometime, it's still there...

Here is an example of code to handle that migration : https://gist.github.com/2009491 (just
for inspiration, because it migrate everything to the Document folder, it's for the PGSQLitePlugin)
                
      was (Author: mosamich):
    After some testing, it looks like the plugin doesn't do the migration from WebKit folder
to the Caches folder. It should happens when users upgrade to iOS5.1. I know that sometime,
the WebKit folder is completely deleted during the iOS5.1 update, but sometime, it's still
there...

Here is an example of code to handle that migration : https://gist.github.com/2009491 (just
for inspiration, because it migrate everything to the Document folder, it's for the PGSQLitePlugin)
                  
> localStorage / SQLDatabase no longer persistent after iOS 5.01 Update
> ---------------------------------------------------------------------
>
>                 Key: CB-330
>                 URL: https://issues.apache.org/jira/browse/CB-330
>             Project: Apache Callback
>          Issue Type: Bug
>          Components: iOS
>    Affects Versions: 1.3.0, 1.4.0, 1.5.0
>         Environment: iOS 5.01
> PhoneGap (Any version)
> Xcode 4
> Build.PhoneGap
>            Reporter: Amirudin Bin Mohamed Ghani
>            Assignee: Shazron Abdullah
>            Priority: Blocker
>              Labels: ios5.01, localstorage, sqldatabase, websql
>             Fix For: 1.6.0
>
>         Attachments: CDVLocalStoragePlugin.zip, Directory-Structure-CB-330.zip, LocalStorageTest.zip,
iOS WebKit Database Locations.txt
>
>
> Dear Dev
> WebKit data (localstorage or local SQLite) are now stored in Library/ Caches folder (instead
of Library/WebKit folder). This is a big problem for all apps using UIWebView and storing
user data, because they will no longer be backed up and may be deleted. There are a lot of
apps using localstorage or SQLite as a critical feature. 
> The SQLite database gets deleted because the database is saved in a location on the filesystem
which Apple does not consider to contain persistent data.
> *Steps to Reproduce:* 
> In a UIWebView, create a new DB or use localStorage with JavaScript. 
> You can see that the WebKit data is now stored in Library/Caches :  
> *Expected Results:*
> We should at least specify the directory of WebKit data (and to set it 
> to Documents/ for critical data) 
> *Actual Results:* 
> The WebKit data are stored in Library/Caches folder, and can be 
> deleted 
> *Regression:*
> To migrate database location from Library/Caches to some other location such as Documents.
> ----
> Ref: http://developer.apple.com/icloud/documentation/data-storage/
> https://devforums.apple.com/thread/137882?start=0&tstart=0

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