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From "Angelo Marras (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CB-330) localStorage / SQLDatabase no longer persistent after iOS 5.01 Update
Date Tue, 24 Apr 2012 10:35:35 GMT

    [ https://issues.apache.org/jira/browse/CB-330?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13260419#comment-13260419
] 

Angelo Marras commented on CB-330:
----------------------------------

After the first install:

===Start CDVLocalStorageDiagnostics==========
iOS version: 5.1
=============================================
Printing list of backup info.
--------------------------------------
Label: localStorage database
shouldBackup: NO shouldRestore: NO
Original: /var/mobile/Applications/3EC7A50D-4148-449A-A5A5-FDB297820694/Library/Caches/file__0.localstorage
Exists?: NO
Backup: /var/mobile/Applications/3EC7A50D-4148-449A-A5A5-FDB297820694/Documents/Backups/localstorage.appdata.db
Exists?: NO
--------------------------------------
Label: websql main database
shouldBackup: YES shouldRestore: NO
Original: /var/mobile/Applications/3EC7A50D-4148-449A-A5A5-FDB297820694/Library/Caches/Databases.db
Exists?: YES
Backup: /var/mobile/Applications/3EC7A50D-4148-449A-A5A5-FDB297820694/Documents/Backups/websqlmain.appdata.db
Exists?: NO
--------------------------------------
Label: websql databases
shouldBackup: YES shouldRestore: NO
Original: /var/mobile/Applications/3EC7A50D-4148-449A-A5A5-FDB297820694/Library/Caches/file__0
Exists?: YES
Backup: /var/mobile/Applications/3EC7A50D-4148-449A-A5A5-FDB297820694/Documents/Backups/websqldbs.appdata.db
Exists?: NO
=============================================
Printing folder locations, check for existence.
Path /var/mobile/Applications/3EC7A50D-4148-449A-A5A5-FDB297820694/Library/Caches exists?:
YES
Path /var/mobile/Applications/3EC7A50D-4148-449A-A5A5-FDB297820694/Library/WebKit exists?:
NO
=============================================
Checking plist /var/mobile/Applications/3EC7A50D-4148-449A-A5A5-FDB297820694/Library/Preferences/ch.baz.epaper.plist
for WebKit keys.
Key: WebKitLocalStorageDatabasePathPreferenceKey Value: /var/mobile/Applications/3EC7A50D-4148-449A-A5A5-FDB297820694/Library/Caches
Key: WebDatabaseDirectory Value: /var/mobile/Applications/3EC7A50D-4148-449A-A5A5-FDB297820694/Library/Caches
===End CDVLocalStorageDiagnostics============


After app update:

===Start CDVLocalStorageDiagnostics==========
iOS version: 5.1
=============================================
Printing list of backup info.
--------------------------------------
Label: localStorage database
shouldBackup: NO shouldRestore: NO
Original: /var/mobile/Applications/D08A19B0-0AC0-4C3D-9645-A5992271AB33/Library/Caches/file__0.localstorage
Exists?: YES
Backup: /var/mobile/Applications/D08A19B0-0AC0-4C3D-9645-A5992271AB33/Documents/Backups/localstorage.appdata.db
Exists?: YES
--------------------------------------
Label: websql main database
shouldBackup: NO shouldRestore: NO
Original: /var/mobile/Applications/D08A19B0-0AC0-4C3D-9645-A5992271AB33/Library/Caches/Databases.db
Exists?: YES
Backup: /var/mobile/Applications/D08A19B0-0AC0-4C3D-9645-A5992271AB33/Documents/Backups/websqlmain.appdata.db
Exists?: YES
--------------------------------------
Label: websql databases
shouldBackup: NO shouldRestore: NO
Original: /var/mobile/Applications/D08A19B0-0AC0-4C3D-9645-A5992271AB33/Library/Caches/file__0
Exists?: YES
Backup: /var/mobile/Applications/D08A19B0-0AC0-4C3D-9645-A5992271AB33/Documents/Backups/websqldbs.appdata.db
Exists?: YES
=============================================
Printing folder locations, check for existence.
Path /var/mobile/Applications/D08A19B0-0AC0-4C3D-9645-A5992271AB33/Library/Caches exists?:
YES
Path /var/mobile/Applications/D08A19B0-0AC0-4C3D-9645-A5992271AB33/Library/WebKit exists?:
NO
=============================================
Checking plist /var/mobile/Applications/D08A19B0-0AC0-4C3D-9645-A5992271AB33/Library/Preferences/ch.baz.epaper.plist
for WebKit keys.
Key: WebKitLocalStorageDatabasePathPreferenceKey Value: /var/mobile/Applications/D08A19B0-0AC0-4C3D-9645-A5992271AB33/Library/Caches
Key: WebDatabaseDirectory Value: /var/mobile/Applications/D08A19B0-0AC0-4C3D-9645-A5992271AB33/Library/Caches
===End CDVLocalStorageDiagnostics============


And the error message: deny file-write-create /private/var/mobile/Applications/3EC7A50D-4148-449A-A5A5-FDB297820694
                
> 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: CDVLocalStorageDiagnostics.zip, CDVLocalStoragePlugin.zip, Directory-Structure-CB-330.zip,
LocalStorageTest.zip, README.txt, 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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