[google-appengine] Re: ListProperty vs StringListProperty
So, if I want StringListProperty, but I don't want/need the indexing, then I ought use ListProperty(db.Text)? Thanks again, Jeff On Mon, Aug 10, 2009 at 11:35 AM, Nick Johnson (Google)nick.john...@google.com wrote: On Mon, Aug 10, 2009 at 7:25 PM, Jeff Enderwickjeff.enderw...@gmail.com wrote: Thanks Nick. So in the case below, will the datastore then maintain an index on alist by default? Yes - str and unicode instances get indexed by default. -Nick On Mon, Aug 10, 2009 at 3:35 AM, Nick Johnson (Google)nick.john...@google.com wrote: Hi Jeff, A StringListProperty is exactly equivalent, as far as the datastore is concerned, to multiple individual String properties. That is, an entity like this: MyEntity(astring=foo, alist=[foo, bar]) is stored in the datastore analagous to this: ((astring, foo), (alist, foo), (alist, bar)) -Nick Johnson On Sun, Aug 9, 2009 at 6:33 PM, Jeff Enderwickjeff.enderw...@gmail.com wrote: Hey all, is there any datastop/API overhead difference between these two? Is there any difference in index (or lack thereof) maintenance by the datastore? Thanks, Jeff -- Nick Johnson, Developer Programs Engineer, App Engine -- Nick Johnson, Developer Programs Engineer, App Engine --~--~-~--~~~---~--~~ You received this message because you are subscribed to the Google Groups Google App Engine group. To post to this group, send email to google-appengine@googlegroups.com To unsubscribe from this group, send email to google-appengine+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/google-appengine?hl=en -~--~~~~--~~--~--~---
[google-appengine] Re: ListProperty vs StringListProperty
On Tue, Aug 11, 2009 at 7:04 AM, Jeff Enderwickjeff.enderw...@gmail.com wrote: So, if I want StringListProperty, but I don't want/need the indexing, then I ought use ListProperty(db.Text)? A better option would be to use StringListProperty(indexed=False). -Nick Johnson Thanks again, Jeff On Mon, Aug 10, 2009 at 11:35 AM, Nick Johnson (Google)nick.john...@google.com wrote: On Mon, Aug 10, 2009 at 7:25 PM, Jeff Enderwickjeff.enderw...@gmail.com wrote: Thanks Nick. So in the case below, will the datastore then maintain an index on alist by default? Yes - str and unicode instances get indexed by default. -Nick On Mon, Aug 10, 2009 at 3:35 AM, Nick Johnson (Google)nick.john...@google.com wrote: Hi Jeff, A StringListProperty is exactly equivalent, as far as the datastore is concerned, to multiple individual String properties. That is, an entity like this: MyEntity(astring=foo, alist=[foo, bar]) is stored in the datastore analagous to this: ((astring, foo), (alist, foo), (alist, bar)) -Nick Johnson On Sun, Aug 9, 2009 at 6:33 PM, Jeff Enderwickjeff.enderw...@gmail.com wrote: Hey all, is there any datastop/API overhead difference between these two? Is there any difference in index (or lack thereof) maintenance by the datastore? Thanks, Jeff -- Nick Johnson, Developer Programs Engineer, App Engine -- Nick Johnson, Developer Programs Engineer, App Engine -- Nick Johnson, Developer Programs Engineer, App Engine --~--~-~--~~~---~--~~ You received this message because you are subscribed to the Google Groups Google App Engine group. To post to this group, send email to google-appengine@googlegroups.com To unsubscribe from this group, send email to google-appengine+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/google-appengine?hl=en -~--~~~~--~~--~--~---
[google-appengine] Re: ListProperty vs StringListProperty
Thanks again Nick. Sorry to be a PITA. We've been told that TextProperty is effectively the same as StringProperty w/out the indexing (although the online doc indicates some max length differences). What are the differences between ListProperty(db.Text) and StringListProperty(indexed=False), and what makes the latter better? On Tue, Aug 11, 2009 at 3:55 AM, Nick Johnson (Google)nick.john...@google.com wrote: On Tue, Aug 11, 2009 at 7:04 AM, Jeff Enderwickjeff.enderw...@gmail.com wrote: So, if I want StringListProperty, but I don't want/need the indexing, then I ought use ListProperty(db.Text)? A better option would be to use StringListProperty(indexed=False). -Nick Johnson Thanks again, Jeff On Mon, Aug 10, 2009 at 11:35 AM, Nick Johnson (Google)nick.john...@google.com wrote: On Mon, Aug 10, 2009 at 7:25 PM, Jeff Enderwickjeff.enderw...@gmail.com wrote: Thanks Nick. So in the case below, will the datastore then maintain an index on alist by default? Yes - str and unicode instances get indexed by default. -Nick On Mon, Aug 10, 2009 at 3:35 AM, Nick Johnson (Google)nick.john...@google.com wrote: Hi Jeff, A StringListProperty is exactly equivalent, as far as the datastore is concerned, to multiple individual String properties. That is, an entity like this: MyEntity(astring=foo, alist=[foo, bar]) is stored in the datastore analagous to this: ((astring, foo), (alist, foo), (alist, bar)) -Nick Johnson On Sun, Aug 9, 2009 at 6:33 PM, Jeff Enderwickjeff.enderw...@gmail.com wrote: Hey all, is there any datastop/API overhead difference between these two? Is there any difference in index (or lack thereof) maintenance by the datastore? Thanks, Jeff -- Nick Johnson, Developer Programs Engineer, App Engine -- Nick Johnson, Developer Programs Engineer, App Engine -- Nick Johnson, Developer Programs Engineer, App Engine --~--~-~--~~~---~--~~ You received this message because you are subscribed to the Google Groups Google App Engine group. To post to this group, send email to google-appengine@googlegroups.com To unsubscribe from this group, send email to google-appengine+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/google-appengine?hl=en -~--~~~~--~~--~--~---
[google-appengine] Re: ListProperty vs StringListProperty
On Tue, Aug 11, 2009 at 7:46 PM, Jeff Enderwickjeff.enderw...@gmail.com wrote: Thanks again Nick. Sorry to be a PITA. We've been told that TextProperty is effectively the same as StringProperty w/out the indexing (although the online doc indicates some max length differences). That's correct. The length limitation on StringProperty is due to the indexing. What are the differences between ListProperty(db.Text) and StringListProperty(indexed=False), and what makes the latter better? A ListProperty requires the elements to be the exact type specified, so you'd have to explicitly cast all your items to db.Text. A StringListProperty, however, will happily accept str, unicode, and (I think) db.Text instances. -Nick Johnson On Tue, Aug 11, 2009 at 3:55 AM, Nick Johnson (Google)nick.john...@google.com wrote: On Tue, Aug 11, 2009 at 7:04 AM, Jeff Enderwickjeff.enderw...@gmail.com wrote: So, if I want StringListProperty, but I don't want/need the indexing, then I ought use ListProperty(db.Text)? A better option would be to use StringListProperty(indexed=False). -Nick Johnson Thanks again, Jeff On Mon, Aug 10, 2009 at 11:35 AM, Nick Johnson (Google)nick.john...@google.com wrote: On Mon, Aug 10, 2009 at 7:25 PM, Jeff Enderwickjeff.enderw...@gmail.com wrote: Thanks Nick. So in the case below, will the datastore then maintain an index on alist by default? Yes - str and unicode instances get indexed by default. -Nick On Mon, Aug 10, 2009 at 3:35 AM, Nick Johnson (Google)nick.john...@google.com wrote: Hi Jeff, A StringListProperty is exactly equivalent, as far as the datastore is concerned, to multiple individual String properties. That is, an entity like this: MyEntity(astring=foo, alist=[foo, bar]) is stored in the datastore analagous to this: ((astring, foo), (alist, foo), (alist, bar)) -Nick Johnson On Sun, Aug 9, 2009 at 6:33 PM, Jeff Enderwickjeff.enderw...@gmail.com wrote: Hey all, is there any datastop/API overhead difference between these two? Is there any difference in index (or lack thereof) maintenance by the datastore? Thanks, Jeff -- Nick Johnson, Developer Programs Engineer, App Engine -- Nick Johnson, Developer Programs Engineer, App Engine -- Nick Johnson, Developer Programs Engineer, App Engine -- Nick Johnson, Developer Programs Engineer, App Engine --~--~-~--~~~---~--~~ You received this message because you are subscribed to the Google Groups Google App Engine group. To post to this group, send email to google-appengine@googlegroups.com To unsubscribe from this group, send email to google-appengine+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/google-appengine?hl=en -~--~~~~--~~--~--~---
[google-appengine] Re: ListProperty vs StringListProperty
On Aug 11, 10:57 pm, Nick Johnson (Google) nick.john...@google.com wrote: That's correct. The length limitation on StringProperty is due to the indexing. Does this mean that a StringProperty(indexed=False) can have unlimited length? --~--~-~--~~~---~--~~ You received this message because you are subscribed to the Google Groups Google App Engine group. To post to this group, send email to google-appengine@googlegroups.com To unsubscribe from this group, send email to google-appengine+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/google-appengine?hl=en -~--~~~~--~~--~--~---
[google-appengine] Re: ListProperty vs StringListProperty
On Tue, Aug 11, 2009 at 9:38 PM, Peter Petrovonest...@gmail.com wrote: On Aug 11, 10:57 pm, Nick Johnson (Google) nick.john...@google.com wrote: That's correct. The length limitation on StringProperty is due to the indexing. Does this mean that a StringProperty(indexed=False) can have unlimited length? No - the length limitation is applied to unindexed strings, too. -Nick -- Nick Johnson, Developer Programs Engineer, App Engine --~--~-~--~~~---~--~~ You received this message because you are subscribed to the Google Groups Google App Engine group. To post to this group, send email to google-appengine@googlegroups.com To unsubscribe from this group, send email to google-appengine+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/google-appengine?hl=en -~--~~~~--~~--~--~---
[google-appengine] Re: ListProperty vs StringListProperty
Hi Jeff, A StringListProperty is exactly equivalent, as far as the datastore is concerned, to multiple individual String properties. That is, an entity like this: MyEntity(astring=foo, alist=[foo, bar]) is stored in the datastore analagous to this: ((astring, foo), (alist, foo), (alist, bar)) -Nick Johnson On Sun, Aug 9, 2009 at 6:33 PM, Jeff Enderwickjeff.enderw...@gmail.com wrote: Hey all, is there any datastop/API overhead difference between these two? Is there any difference in index (or lack thereof) maintenance by the datastore? Thanks, Jeff -- Nick Johnson, Developer Programs Engineer, App Engine --~--~-~--~~~---~--~~ You received this message because you are subscribed to the Google Groups Google App Engine group. To post to this group, send email to google-appengine@googlegroups.com To unsubscribe from this group, send email to google-appengine+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/google-appengine?hl=en -~--~~~~--~~--~--~---
[google-appengine] Re: ListProperty vs StringListProperty
Thanks Nick. So in the case below, will the datastore then maintain an index on alist by default? On Mon, Aug 10, 2009 at 3:35 AM, Nick Johnson (Google)nick.john...@google.com wrote: Hi Jeff, A StringListProperty is exactly equivalent, as far as the datastore is concerned, to multiple individual String properties. That is, an entity like this: MyEntity(astring=foo, alist=[foo, bar]) is stored in the datastore analagous to this: ((astring, foo), (alist, foo), (alist, bar)) -Nick Johnson On Sun, Aug 9, 2009 at 6:33 PM, Jeff Enderwickjeff.enderw...@gmail.com wrote: Hey all, is there any datastop/API overhead difference between these two? Is there any difference in index (or lack thereof) maintenance by the datastore? Thanks, Jeff -- Nick Johnson, Developer Programs Engineer, App Engine --~--~-~--~~~---~--~~ You received this message because you are subscribed to the Google Groups Google App Engine group. To post to this group, send email to google-appengine@googlegroups.com To unsubscribe from this group, send email to google-appengine+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/google-appengine?hl=en -~--~~~~--~~--~--~---
[google-appengine] Re: ListProperty vs StringListProperty
On Mon, Aug 10, 2009 at 7:25 PM, Jeff Enderwickjeff.enderw...@gmail.com wrote: Thanks Nick. So in the case below, will the datastore then maintain an index on alist by default? Yes - str and unicode instances get indexed by default. -Nick On Mon, Aug 10, 2009 at 3:35 AM, Nick Johnson (Google)nick.john...@google.com wrote: Hi Jeff, A StringListProperty is exactly equivalent, as far as the datastore is concerned, to multiple individual String properties. That is, an entity like this: MyEntity(astring=foo, alist=[foo, bar]) is stored in the datastore analagous to this: ((astring, foo), (alist, foo), (alist, bar)) -Nick Johnson On Sun, Aug 9, 2009 at 6:33 PM, Jeff Enderwickjeff.enderw...@gmail.com wrote: Hey all, is there any datastop/API overhead difference between these two? Is there any difference in index (or lack thereof) maintenance by the datastore? Thanks, Jeff -- Nick Johnson, Developer Programs Engineer, App Engine -- Nick Johnson, Developer Programs Engineer, App Engine --~--~-~--~~~---~--~~ You received this message because you are subscribed to the Google Groups Google App Engine group. To post to this group, send email to google-appengine@googlegroups.com To unsubscribe from this group, send email to google-appengine+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/google-appengine?hl=en -~--~~~~--~~--~--~---
