[google-appengine] Re: Ideas for a bit more advanced search

[ArtemGr]

On 22 фев, 00:36, Steffen 'stefreak' Neubauer 
wrote:
> I want to implement a search that is a bit advanced and searching for
> some ideas on how to implement it.
>
> For now, my ranking is an int property for each document, i'll sort the
> results by that property.
> To search my documents i'll use ListProperty (with substrings, e.g.
> for green [gr,gre,gree,green], maybe with reverse too ([en,een,reen]))
> and the = operator i think.

Why not apply a stemmer to all words and then keep a single (stemmed)
version?

> But i have no idea how to implement the " search operator (search for
> "Debian 5.0" for example). Has anyone an idea? Or proposals how to
> implement it a better way?

Here's one silly idea:

class Occurence(db.Model):
  keyword = db.ReferenceProperty (Keyword)
  document = db.IntegerProperty ()
  termPositions = db.ListProperty (int)

For every matched document you get the termPositions of both terms and
see if the second one contains a position which is +1 from the first
one...
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[google-appengine] Re: Full page memcache caching and HTTP status in logs

[ArtemGr]

> Hmm no, it's not perfect :) The client gets a 200 if it's cached and a
> 404 if it's not cached. How do i send a 404 to the client without
> touching the webapp framework? Could not find anything.

You need to use the standard CGI "Status" header.
print ('Status: 404')
print ('Content-Type: text/html')
See http://www.apps.ietf.org/rfc/rfc3875.html#sec-6.3.3

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[google-appengine] Re: Full page memcache caching and HTTP status in logs

[ArtemGr]

> Hmm no, it's not perfect :) The client gets a 200 if it's cached and a
> 404 if it's not cached. How do i send a 404 to the client without
> touching the webapp framework? Could not find anything.
>
> Thank you.

http://www.apps.ietf.org/rfc/rfc3875.html#sec-6.3.3

print ('Status: ' + str(httpStatus))

or

print ('Status: 404')

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