persistence

问题 I have a relativley simple app which persists data to a plist file located in the documents folder. The data loads into a UITableView at startup. The user can then edit, delete or add records and any changes get saved back to the plist file. Now I would like to share this data (the plist file) across devices using iCloud. I have looked at the documentation and my understanding is that I need to create a UIDocument to "manage" the plist file. I have looked at several iCloud tutorials however

问题 My app uses Firebase to sync and restore data. I use the setValue:withCompletionBlock: method to insert, update and delete Firebase objects. This method is called whenever there is a CoreData save, thus syncing all my local changes to Firebase - (void) setValue:(id)value withCompletionBlock:(void (^)(NSError* error, Firebase* ref))block; Now syncing uploads all the local data to firebase, while restore replaces the local data with firebase data. - (void) observeSingleEventOfType:(FEventType

问题 This question already has answers here : Save Settings in a .NET Winforms Application [duplicate] (3 answers) Closed 1 year ago . complete noob here, i thought i'd follow a tutorial for a web browser to help teach me some stuff. i've done that, and it works, but now i want to get more advanced with it. Ive got a tab page control, one tab is browser, and one is bookmarks. i want the bookmarks section to be interactive. so, to add in subtabs for the bookmarks tab page. i want to give the user

问题 This question already has answers here : Save Settings in a .NET Winforms Application [duplicate] (3 answers) Closed 1 year ago . complete noob here, i thought i'd follow a tutorial for a web browser to help teach me some stuff. i've done that, and it works, but now i want to get more advanced with it. Ive got a tab page control, one tab is browser, and one is bookmarks. i want the bookmarks section to be interactive. so, to add in subtabs for the bookmarks tab page. i want to give the user

问题 This question already has answers here : Spring Data JPA Update @Query not updating? (5 answers) Closed 10 months ago . let's suppose to have this situation: We have spring data configured in the standard way, there is a Respository object, an Entity object and all works well. Now for some complex motivations I have to use directly EntityManager (or JdbcTemplate , whatever is at a lower level than spring data) to update the table associated to my Entity , with a native sql query . So I'm not

问题 I am trying to build a Apache WebDAV private cloud server. All my files will be in /usr/John/ directory and I can mount this location for the container to use. The problem is that I will also add new files via this server, but whatever I try they stay only within the container. Is there a way to reflect the same new files also in the host directory (/usr/John/)? I could do a recurrent job to go into this container and CP all files to the host directory but it's not a very elegant solution.

问题 Error occurs when attempting to persist a one-to-many relationship. In particular, a client may have multiple household members; a given household member is associated with one and only one client. [I am new to Symfony so errors are expected!] Your guidance gratefully accepted. N.B. Alternate controller snippet below yields integrity constraint error by trying to set the client's id in the household table to null. Clients Entity snippet namespace Mana\AdminBundle\Entity; use Doctrine\ORM

问题 Error occurs when attempting to persist a one-to-many relationship. In particular, a client may have multiple household members; a given household member is associated with one and only one client. [I am new to Symfony so errors are expected!] Your guidance gratefully accepted. N.B. Alternate controller snippet below yields integrity constraint error by trying to set the client's id in the household table to null. Clients Entity snippet namespace Mana\AdminBundle\Entity; use Doctrine\ORM

问题 I have a windows service, running workflows. The workflows are XAMLs loaded from database (users can define their own workflows using a rehosted designer). It is configured with one instance of the SQLWorkflowInstanceStore, to persist workflows when becoming idle. (It's basically derived from the example code in \ControllingWorkflowApplications from Microsoft's WCF/WF samples). But sometimes I get an error like below: System.Runtime.DurableInstancing.InstanceOwnerException: The execution of

问题 I am trying to work with HTML5 local storage in asp. I can read and write to the storage, but if I do a response.redirect the entire local storage is wiped out? <script type='text/javascript'> localStorage["email"] = "<%=email%>"; localStorage["remember"] = "1"; </script> This works fine for saving and I can see the variable saved in local storage using Developer Tools. However if after that I add response.redirect ("index.asp") then the entire local storage is cleaned. How can I cause to to