Just reporting on progress: Hacking my own ResponseWriter I manage to add the field to the doc just-in-time before it's written. It's not that messy after all, and i suspect the fields could also be declared in schema.xml (if we want to be able to disable them at run-time) and only if present the value is computed and added. As acknowledged by others before me, there's room for refactoring ResponseWriters to at least make them more re-usable.
Hope SOLR-1566 <https://issues.apache.org/jira/browse/SOLR-1566> come up with a cleaner solution. On Sat, May 14, 2011 at 3:55 PM, Gabriele Kahlout <gabri...@mysimpatico.com>wrote: > I calculate it from search-time + index-time field values. > For example, say I want to print the reciprocal of the content field norm > (available at index-time) along every document in the results. What's the > 'clean' way of doing that? > > > On Sat, May 14, 2011 at 3:42 PM, Markus Jelsma <markus.jel...@openindex.io > > wrote: > >> I'm not sure what you're trying to do. Where does the field value needs to >> come >> from? >> >> > Hello, >> > >> > I'm trying to add an extra field to the schema.xml that is only stored, >> but >> > with nutch not knowing about it, I don't know how to tell Solr of its >> value >> > for each document. I'd like to plugin the computation, something like is >> > done with Similarity, but I'm not sure how to do that. >> > >> > From SOLR-1566 <https://issues.apache.org/jira/browse/SOLR-1566>: >> > "Currently it is not possible for components to add fields to outgoing >> > documents which are not in the the stored fields of the document." >> > That's my next problem, but let's say I'm okay storing the field, how do >> I >> > do that? >> > >> > BTW, I tried hacking the code to add the fields a response-time to the >> > defaultFields per document, but since it always has a cached document >> it'll >> > not add them (I could still force the adding, but I'm not sure what else >> > will break as a result). >> > > > > -- > Regards, > K. Gabriele > > --- unchanged since 20/9/10 --- > P.S. If the subject contains "[LON]" or the addressee acknowledges the > receipt within 48 hours then I don't resend the email. > subject(this) ∈ L(LON*) ∨ ∃x. (x ∈ MyInbox ∧ Acknowledges(x, this) ∧ > time(x) < Now + 48h) ⇒ ¬resend(I, this). > > If an email is sent by a sender that is not a trusted contact or the email > does not contain a valid code then the email is not received. A valid code > starts with a hyphen and ends with "X". > ∀x. x ∈ MyInbox ⇒ from(x) ∈ MySafeSenderList ∨ (∃y. y ∈ subject(x) ∧ y ∈ > L(-[a-z]+[0-9]X)). > > -- Regards, K. Gabriele --- unchanged since 20/9/10 --- P.S. If the subject contains "[LON]" or the addressee acknowledges the receipt within 48 hours then I don't resend the email. subject(this) ∈ L(LON*) ∨ ∃x. (x ∈ MyInbox ∧ Acknowledges(x, this) ∧ time(x) < Now + 48h) ⇒ ¬resend(I, this). If an email is sent by a sender that is not a trusted contact or the email does not contain a valid code then the email is not received. A valid code starts with a hyphen and ends with "X". ∀x. x ∈ MyInbox ⇒ from(x) ∈ MySafeSenderList ∨ (∃y. y ∈ subject(x) ∧ y ∈ L(-[a-z]+[0-9]X)).
