I've not tried to port data from python to java either but am comfortable
with accessing the raw data objects from big table.
Essentially you are dealing with Entity and Property objects.
This is the javadoc for the low level api
http://code.google.com/appengine/docs/java/javadoc/com/google/appeng
I see... to play safe i used string properties populated with JSON values,
whenever needed. I'll make some tests with these types, hopefully i'll get
it working.
Thanks. :)
2010/12/26 Tim Hoffman
> Hi
>
> You can always get the underlying raw entity. I wouldn't have a clue how
> you go about tha
Hi
You can always get the underlying raw entity. I wouldn't have a clue how you
go about that in java.
But the underlying datastore is the same for both environments.
Rgds
T
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By the way, if i use an Expando or a Polymodel on Python, will i be able to
access it using Java?
2010/12/26 Tim Hoffman
> Hi
>
> But you're using db.Model from appengine, not django ;-)
>
> I suggest you have a read of the Property class documentation on
> appengine.
> http://code.google.com/a
Hi
But you're using db.Model from appengine, not django ;-)
I suggest you have a read of the Property class documentation on appengine.
http://code.google.com/appengine/docs/python/datastore/propertyclass.html
It's pretty explicit about the semantics of the "required" parameter
Rgds
Tim
--
Ah ok. In django this is possible even for "required=True" parameter
(in django required param is called as null though).
On Sun, Dec 26, 2010 at 4:20 PM, Tim Hoffman wrote:
> When I say required I mean all the properties marked with "required=True"
> everything else can be done later
> T
>
>
When I say required I mean all the properties marked with "required=True"
everything else can be done later
T
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Hi
You can't db.Model just doesn't work that way.
You must supply the required values when you construct the instance.
You will note this is also a problem if you add new required properties to
existing classes
and don't update the entities in the datastore. You will find you can't
load them
Yup I know i have to set all the required fields, but I would to do it later
So if this is the class
Class Test(db.Model)
prop1 = db.StringProperty()
or
Class Test(db.Model)
prop1 = db.StringProperty(required = True)
I would like to create an empty object first
test = Test()
and
HI
The error you are getting doesn't reflect the code/model you have posted
here, which makes it hard to help you.
That error is specifically referring to a Picture property.
You will should to supply real code that generates the error rather than
something for the posting .
As hint though, yo
sorry typo
test = Test()
test.prop1 = val
test.put()
On Sun, Dec 26, 2010 at 2:26 PM, rj wrote:
> For ex:
>
> I created a model
>
> Class Test(db.Model)
> prop1 = db.StringProperty()
>
> Now in one of my classes function
>
> I would like to do something like this
>
> test = Test()
>
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