Re: JavaFSAdaptor and non-working EO methods
Re: JavaFSAdaptor and non-working EO methods
- Subject: Re: JavaFSAdaptor and non-working EO methods
- From: Joe Little <email@hidden>
- Date: Wed, 20 May 2009 11:24:40 -0700
And to answer Chuck's question, his way did "work better" and that is
how I found out about the read-only attribute failure on write. I took
my code example from the JavaFS examples (which Pascal further
immortalized on the wiki). If its the wrong way, perhaps that should
be updated and/or give the reason why what it says is murderous :) The
latter is something I'm unsure of myself as I fell into that hole.
On Wed, May 20, 2009 at 11:12 AM, Chuck Hill <email@hidden> 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
>
>
>>
>>
>>
>> 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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>
> --
> Chuck Hill Senior Consultant / VP Development
>
> Come to WOWODC'09 in San Fran this June!
> http://www.wocommunity.org/wowodc09/
>
>
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