Alpha Software Mobile Development Tools:   Alpha Anywhere    |   Alpha TransForm subscribe to our YouTube Channel  Follow Us on LinkedIn  Follow Us on Twitter  Follow Us on Facebook

Announcement

Collapse

The Alpha Software Forum Participation Guidelines

The Alpha Software Forum is a free forum created for Alpha Software Developer Community to ask for help, exchange ideas, and share solutions. Alpha Software strives to create an environment where all members of the community can feel safe to participate. In order to ensure the Alpha Software Forum is a place where all feel welcome, forum participants are expected to behave as follows:
  • Be professional in your conduct
  • Be kind to others
  • Be constructive when giving feedback
  • Be open to new ideas and suggestions
  • Stay on topic


Be sure all comments and threads you post are respectful. Posts that contain any of the following content will be considered a violation of your agreement as a member of the Alpha Software Forum Community and will be moderated:
  • Spam.
  • Vulgar language.
  • Quotes from private conversations without permission, including pricing and other sales related discussions.
  • Personal attacks, insults, or subtle put-downs.
  • Harassment, bullying, threatening, mocking, shaming, or deriding anyone.
  • Sexist, racist, homophobic, transphobic, ableist, or otherwise discriminatory jokes and language.
  • Sexually explicit or violent material, links, or language.
  • Pirated, hacked, or copyright-infringing material.
  • Encouraging of others to engage in the above behaviors.


If a thread or post is found to contain any of the content outlined above, a moderator may choose to take one of the following actions:
  • Remove the Post or Thread - the content is removed from the forum.
  • Place the User in Moderation - all posts and new threads must be approved by a moderator before they are posted.
  • Temporarily Ban the User - user is banned from forum for a period of time.
  • Permanently Ban the User - user is permanently banned from the forum.


Moderators may also rename posts and threads if they are too generic or do not property reflect the content.

Moderators may move threads if they have been posted in the incorrect forum.

Threads/Posts questioning specific moderator decisions or actions (such as "why was a user banned?") are not allowed and will be removed.

The owners of Alpha Software Corporation (Forum Owner) reserve the right to remove, edit, move, or close any thread for any reason; or ban any forum member without notice, reason, or explanation.

Community members are encouraged to click the "Report Post" icon in the lower left of a given post if they feel the post is in violation of the rules. This will alert the Moderators to take a look.

Alpha Software Corporation may amend the guidelines from time to time and may also vary the procedures it sets out where appropriate in a particular case. Your agreement to comply with the guidelines will be deemed agreement to any changes to it.



Bonus TIPS for Successful Posting

Try a Search First
It is highly recommended that a Search be done on your topic before posting, as many questions have been answered in prior posts. As with any search engine, the shorter the search term, the more "hits" will be returned, but the more specific the search term is, the greater the relevance of those "hits". Searching for "table" might well return every message on the board while "tablesum" would greatly restrict the number of messages returned.

When you do post
First, make sure you are posting your question in the correct forum. For example, if you post an issue regarding Desktop applications on the Mobile & Browser Applications board , not only will your question not be seen by the appropriate audience, it may also be removed or relocated.

The more detail you provide about your problem or question, the more likely someone is to understand your request and be able to help. A sample database with a minimum of records (and its support files, zipped together) will make it much easier to diagnose issues with your application. Screen shots of error messages are especially helpful.

When explaining how to reproduce your problem, please be as detailed as possible. Describe every step, click-by-click and keypress-by-keypress. Otherwise when others try to duplicate your problem, they may do something slightly different and end up with different results.

A note about attachments
You may only attach one file to each message. Attachment file size is limited to 2MB. If you need to include several files, you may do so by zipping them into a single archive.

If you forgot to attach your files to your post, please do NOT create a new thread. Instead, reply to your original message and attach the file there.

When attaching screen shots, it is best to attach an image file (.BMP, .JPG, .GIF, .PNG, etc.) or a zip file of several images, as opposed to a Word document containing the screen shots. Because Word documents are prone to viruses, many message board users will not open your Word file, therefore limiting their ability to help you.

Similarly, if you are uploading a zipped archive, you should simply create a .ZIP file and not a self-extracting .EXE as many users will not run your EXE file.
See more
See less

MySQL Time Field Write Conflict

Collapse
X
 
  • Filter
  • Time
  • Show
Clear All
new posts

    MySQL Time Field Write Conflict

    I've searched around and seen some allusions to this issue (but not in this forum) so I wanted to see what the latest opinions are on the problem I'm experiencing (and if I'm missing something, of course).

    My time saga continues, although I'm making progress. I have a time field in a MySQL table, which is displayed in the Detail View of a list contained in a UX component of a mobile app. The control is an Html5 time control, I set the "Date/Time" display format of this field in the Fields tab of the list's properties to "0h:0m". All that works fine. The field displays properly (including AM/PM) and also updates the MySQL table properly, as long as no one has touched the record on the server. However, if a change has been made to a record on the server (whether it's the time field or something else), I get a write conflict.

    For example, say the MySQL table time fields holds the value "02:00:00" (in a specific record); this field is displayed in the Html5 time control as "2:00 AM". That's fine. Then suppose someone changes a field other than the time field in that record while the user makes a change to that same field on the device (again, NOT the time field). When I Save and then attempt to Synchronize I will naturally get a write conflict but in addition to the field that was changed I get the conflict on the time field. The resolution dropdown tells me that "Mine" is "02:00" while "Theirs" is "02:00:00 am". If I choose "mine" the time field ends up being set correctly, if I choose "theirs" same thing. I'd LIKE to detect whether or not there is a "real" conflict but I can't seem to find how Alpha decides against which format it's going to compare my mobile time field input. Fact is, if you actually tried to update the MySQL time field with "02:00:00 am" you'd get an error, incorrect format. The proper format IS "hh:mm:ss", so I don't know why Alpha insists on using a DISPLAY format.

    I've looked in the "On Write Conflict" server side event but it doesn't seem that I have access to the value AGAINST which Alpha is comparing my list control value, I only have access to the list control's "dirty" fields. I've thought of transforming the mobile field value to match the format Alpha is using, I can't find a "code hook" which would allow me to do that and I'm not even sure that's the best way to proceed. Alpha "should" be comparing the value in the time field in the table using the "00:00:00" format (that might present a problem but at least it makes sense), instead it's using a display format.

    Of course I could be wrong, or missing something, which seems to be happening more and more lately, but I'd LOVE some feedback on this.

    Thanks in advance for any commiseration.

    #2
    Re: MySQL Time Field Write Conflict

    Why don't you hide the time field. Then create a display in Alpha, extract the details for the display from MySQL by getting the time as text Hours, Minutes, AM or PM?

    Then in Alpha update this display field (unbound) but onChange write the correct format to the hidden field (bound).

    If this works you are no step closer to understanding the issue.

    Comment


      #3
      Re: MySQL Time Field Write Conflict

      Michael:

      IMO the problem lies in the formatting of the date/time fields by Alpha. For whatever reason, when they try to determine a conflict, the date/time field formatted in a specific way is used; e.g. "01/17/2016 11:16:00 0 am". Notice the "0" just before the "am". There is no way, to my knowledge, to have Alpha transform a date into this format on the client side, either with straight javascript or Alpha/javascript. Thus, if you don't do anything on the server you will ALWAYS generate a write conflict. What I needed to do was use the Server "Validate" event and the XBasic CTODT function to transform my dates and times into a string formatted so that it would match the format Alpha insists on using.

      Could there be some way to do this just on the client-side? Perhaps but, again, I couldn't get any advice (before yours, that is) so I have to do what seems to work. That's my gripe with Alpha, lack of resources (whether it's peer resources born of the sheer number of users or vendor support).

      Thanks for the post, I'll file away your suggestion should the way I'm doing things now prove to be unreliable.

      Comment


        #4
        Re: MySQL Time Field Write Conflict

        Norman, could you create a test MySQL table and UX Component with a List control, Detail View, and a step by step process to duplicate the issue? That way it can be tested with your component and without having to guess at all the settings which could affect the process. Zip the component and table and post it here. The forum has been having trouble lately with uploading so you may need to put the zip elsewhere for download and then provide a link.

        Comment


          #5
          Re: MySQL Time Field Write Conflict

          Will do, as soon as I get a chance. I would like to get to the bottom of this as well although, as I say, my improvised solution seems to be working so far.

          Comment

          Working...
          X