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create cellView with ddGetObj

NickJ

I have some code that allows me to open .csv files with oocalc (libre office) from within library manager. This works great for existing files.

I'm trying to add functionality that allows for the creation of .csv views from lib managet (again using oocalc).

I'm using the ddGetObj() to create the file as the dbOpenCellViewByType() won't work with a csv view. The csv view seems to be correctly registered etc. it's just the ggGetObj that isn't working.

I've tried getting it to create schematic and layout views, but can get nothing to work, but I can only get it to find already existing views. The Virtuoso Design Environment SKILL reference suggests it should create a view.

How do I get this to create a view.?

Parents

  • dbOpenCellViewByType won't do the job, because that's specifically for creating OA database views (or OA database files within other views). ddGetObj in itself will only do part of the job because it creates the directory structure but not the files within the view.

    You may find this article useful: How to create a text cellview using SKILL? - this can be used to create not only cellViews of type "text", but also other registered viewTypes which have a textual file. So I'm pretty sure this will help you.

    Andrew

  • in reply to Andrew Beckett

    OK cheers, I'll have a look at that to see if I cna get that working.

    I know that dBOpenCellViewByType doesn't work. It was ddGetObj that I think should work. I don't understand why it doesn't.

  • in reply to NickJ

    ddGetObj does create the cell or view (or even file within the view). However, it only returns a handle on the directory or the file itself; it's not very useful beyond that - it won't put some desired file content in the right place. It doesn't take care of locking the file, creating the contents, freeing the lock when you're done with it and so on. If you look at the article I pointed to, it uses ddGetObj to do the basic file creation, and then handles locking, giving you a means to write the contents, and then close the view to free the lock. 

    The issue is that ddGetObj is too low level for your needs. There's also stuff in virtuoso to clean up empty cellVIews, so that may also kick in if no content is created.

    Andrew.

  • in reply to Andrew Beckett

    Hi Andrew, the answer you linked to unfortunately doesn't do what I need. The ddGetObj does what I need. Do you have any idea why it isn't creating the view?

  • in reply to NickJ

    So if you do:

    file=ddGetObj("mylib" "mycell" "csv" "file.csv" nil "a")

    it should create mycell/csv as a view, and then creates "file.csv" (zero-sized) with a master.tag file referencing that file. The function should return a dd object for the file.

    Does that not work? If not, what happens?

    If I then do ddReleaseObj(file) it goes ahead and deletes the cell/view because there was no data in the file.

    Andrew.

Reply
  • in reply to NickJ

    So if you do:

    file=ddGetObj("mylib" "mycell" "csv" "file.csv" nil "a")

    it should create mycell/csv as a view, and then creates "file.csv" (zero-sized) with a master.tag file referencing that file. The function should return a dd object for the file.

    Does that not work? If not, what happens?

    If I then do ddReleaseObj(file) it goes ahead and deletes the cell/view because there was no data in the file.

    Andrew.

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