[Zope] Re: [Zope-dev] Custom Repository for Storing Objects

[Casey Duncan]

If you want a transparent connection between your XML RDBMS and Zope so t=
hat=20
Zope need not be aware of the storage for these objects then you can use=20
Shane's AdaptableStorage to create a bridge between Zope's ZODB and your=20
RDBMS. This is probably not going to be a total walk in the park though ;=
^).

Also I would caution that "the XML factor" is likely to introduce signifi=
cant=20
overhead to the storage, which when combined with the underlying RDBMS=20
overhead could result in disappointing performance. Just straight RDBMS Z=
ODB=20
storage (such as OracleStorage) not using XML at all is significantly slo=
wer=20
than the stock FileStorage for instance.

A less transparent option would be to create your own bridge by writing a=
 Zope=20
product that can interact via this XML API and conjure up non-persistent=20
objects to represent its state. Then use the standard ZODB FileStorage or=
 ZEO=20
for the Zope side of things.

It would be even easier if your API was done over XML-RPC. Then the=20
marshalling of the XML to python objects could be largely done for you.

hth,

Casey

<scold type=3D"obligatory">Please don't cross-post your messages in the f=
uture.=20
Many of us are subscribed to multiple lists and don't appreciate reading =
the=20
same message multiple times. Thanks</scold>

On Thursday 09 January 2003 09:11 pm, Sameer Maggon wrote:
> Hi,
>=20
> I am a newbie to Zope and have just gone through the tutorials and a li=
ttle
> bit of ZopeBook. I have my own Custom Repository (RDBMS based) that has=
 the
> features like storing flat files, folders etc. It also has provisions f=
or
> user management. I have the XML APIs (lanuage is not a problem) for
> interacting with the repository.
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> Can I store all the objects created in Zope in that repository?
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> Further I also want that the authentication should also be done based o=
n
> that repository (its like the roles and users defined in the custom sys=
tem).
> Is it possible in Zope?
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> I can comprehend that I would need to develop some kind of an interface=
 that
> sits between the two for integration, but I wanted to know that whether=
 it
> is possible in Zope or not?
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> Its like when a user creates a folder or an object, the request is actu=
ally
> send to a module and then that module stores the object in my repositor=
y
> (may be the format is little bit changed) and vice-versa.
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> Anticipating a positive response
> Sameer Maggon
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