On Tue, Mar 3, 2015 at 10:09 AM, Jeff Schnitzer <[email protected]> wrote:
> GAE/Java stores all integer numbers as 64 bit protobuf values. I presume
> all other
>
That's what is seen at the application-programming interface layer. What's
actually *stored* may take a different number of bytes, as per protobuf
"wire"-level layouts.
runtimes do the same, otherwise there would be compatibility problems when
> reading from the datastore.
>
Yes, the RPCs to/from the datastore are uniform and don't vary with the
application programming language (so, what you can store into, and retrieve
from, an "integer property", is uniformly a 64-bit signed integer value).
That does not necessarily mean it will take the backend exactly 8 bytes to
store it ("how many bytes are used" as it's stored).
Alex
> Jeff
>
> On Tue, Mar 3, 2015 at 6:56 AM, 'Alex Martelli' via Google App Engine <
> [email protected]> wrote:
>
>> In as much as protocol buffers are used in the underlying, #bytes depend
>> on the exact value of the integer -- see
>> https://developers.google.com/protocol-buffers/docs/encoding .
>>
>>
>> Alex
>>
>> On Mon, Mar 2, 2015 at 3:25 AM, Ashley Finney <[email protected]> wrote:
>>
>>> Hi all,
>>>
>>> If the size of int is machine dependant, how many bytes are used when
>>> int is specified as a datastore field?
>>> Will this change depending on the machine that stored the entity? Or
>>> are int fields stored as size independent type?
>>>
>>> Specifically I'm using Go if that matters.
>>>
>>> Many thanks,
>>> Ash.
>>>
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