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Re: JavaFSAdaptor and non-working EO methods
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Re: JavaFSAdaptor and non-working EO methods


  • Subject: Re: JavaFSAdaptor and non-working EO methods
  • From: Mike Schrag <email@hidden>
  • Date: Wed, 20 May 2009 14:24:03 -0400

JavaFSAdaptor is intended to show people how to make a custom EO adaptor, not to .. actually be used.

ms

On May 20, 2009, at 2:22 PM, Joe Little wrote:

On Wed, May 20, 2009 at 11:12 AM, Chuck Hill <chill@global- village.net> wrote:

On May 20, 2009, at 11:06 AM, Joe Little wrote:

I got the JavaFSAdaptor up and running, created a model, eogenerated,
and was able to create a file just fine. However, let's look at an
example that fails. I'm trying to set the content, which apparently
can only be a string:


EOClassDescription aClassDescription =
EOClassDescription.classDescriptionForEntityName("FSFile");
EOEditingContext ec = session().defaultEditingContext();

FSFile myFile = (FSFile)
aClassDescription.createInstanceWithEditingContext(ec, null);
myFile.takeValueForKey ("/tmp/mytest", "absolutePath");
ec.insertObject(myFile);

That seems somewhere between scary and dangerous. How about this:

EOEditingContext ec = session().defaultEditingContext();
FSFile myFile = (FSFile)EOUtilities.createAndInsertInstance(ec, "FSFile");
myFile.takeValueForKey ("/tmp/mytest", "absolutePath");


then on with:

myFile.setContent("Good Test!"); ec.saveChanges();

Does that work any better?


Chuck



Getting somewhere. I had thought content was writable -- and the code generation would make you think so. Alas, the model does say read-only, so it would appear that the JavaFSAdaptor in its current incarnation does not allow any setting of the content itself. Its all read-only across the board. One can create files or directories, but there is no way to save data to those files. Yikes.







Now, later when I reference that file from a fresh fetch, I do get
"Good Test!" when viewing the content. However, the file itself is
empty on the filesystem. Perhaps content isn't what I think it is.
Well, FSFile.name() is a method to get the filename for the given
file. Referencing that always returns null. So does FSfile.path().
Something is seriously not going as expected with this adaptor and/ or
I'm missing some basic understanding of what the EO purports to
support.
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  • Follow-Ups:
    • Re: JavaFSAdaptor and non-working EO methods
      • From: Anjo Krank <email@hidden>
    • Re: JavaFSAdaptor and non-working EO methods
      • From: Joe Little <email@hidden>
References: 
 >JavaFSAdaptor and non-working EO methods (From: Joe Little <email@hidden>)
 >Re: JavaFSAdaptor and non-working EO methods (From: Chuck Hill <email@hidden>)
 >Re: JavaFSAdaptor and non-working EO methods (From: Joe Little <email@hidden>)

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