Re: [Zope] Trying ZODB with a background in RDBMS
Chris Withers wrote at 2008-8-16 23:09 +0100: > ... >How important is it that they're strictly incremental? >If it is, you may want to look at the BTrees.Length module. "BTrees.Length" is unfit for the generation of unique ids, as it may hand out the same id to concurrent transactions. Other solution may do this as well but for them a "ConflictError" may be risen at transaction commit in this case. The "BTrees.Length"'s conflict resolution prevents such a "ConflictError". "Btrees.Length" might be used *PROVIDED* that the conflict is recognized at another place (e.g. by a folder that stores objects with the generated ids). But that are special cases. -- Dieter ___ Zope maillist - Zope@zope.org http://mail.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://mail.zope.org/mailman/listinfo/zope-announce http://mail.zope.org/mailman/listinfo/zope-dev )
Re: [Zope] python split
+---[ Garry Saddington ]-- | Is it possible to split a string at the first occurence of a non-digit | character using a python script in zope, or does this need an external method | for security purposes? You can explicitly allow the re module if you want to split using a regex -- Andrew Milton [EMAIL PROTECTED] ___ Zope maillist - Zope@zope.org http://mail.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://mail.zope.org/mailman/listinfo/zope-announce http://mail.zope.org/mailman/listinfo/zope-dev )
Re: [Zope] python split
--On 17. August 2008 16:29:38 +0100 Garry Saddington <[EMAIL PROTECTED]> wrote: Is it possible to split a string at the first occurence of a non-digit character using a python script in zope, or does this need an external method for security purposes? You can implement a brute-force solution using an iteration using a PythonScript or you use a regular expression (requiring an external method, a browser view or any other form of "trusted code". -aj pgpsptlaruY7Q.pgp Description: PGP signature ___ Zope maillist - Zope@zope.org http://mail.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://mail.zope.org/mailman/listinfo/zope-announce http://mail.zope.org/mailman/listinfo/zope-dev )
[Zope] python split
Is it possible to split a string at the first occurence of a non-digit character using a python script in zope, or does this need an external method for security purposes? regards garry ___ Zope maillist - Zope@zope.org http://mail.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://mail.zope.org/mailman/listinfo/zope-announce http://mail.zope.org/mailman/listinfo/zope-dev )
Re: [Zope] uncataloging
Jens Vagelpohl wrote at 2008-8-16 11:45 +0200: > >On Aug 16, 2008, at 11:06 , Dieter Maurer wrote: > >> The easiest way to determine the "uid" is probably >> to locate the object via a catalog search. You will get a catalog >> proxy >> for the object, often also called "brain". >> This proxy has the method "getPath()" >> which returns the object's "uid" -- don't ask about the inconsistent >> naming (at one place "uid", at another one "path"). > >The naming is not inconsistent. The UID happens to be the path by >default, but it doesn't need to be. The getPath method returns the >path, not the UID. You err with the last sentence (which indicates that consistent naming *is* important): "CatalogBrain.getPath" is mapped to "ZCatalog.getpath" which is mapped to "Catalog.paths". And the comment in "Catalog" says # self.uids is a mapping of the # object unique identifier to the rid, and self.paths is a # mapping of the rid to the unique identifier The code confirms this comment: self.uids[uid] = index self.paths[index] = uid Thus, "getPath" *DOES* return the uid and not the path. -- Dieter ___ Zope maillist - Zope@zope.org http://mail.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://mail.zope.org/mailman/listinfo/zope-announce http://mail.zope.org/mailman/listinfo/zope-dev )
