Re: [smila-user] Record metadata mapping in Solr

[Thomas Menzel <tmenzel@xxxxxxx>]

If u want u could post a feature request for the solr Pipelet to handle such cases transparently / or even donate ur impl as a patch.

I could think of an index pipelet config like so:

 

          <rec:Seq key="CoreFields">

            <rec:Map>

              <rec:Val key="FieldName">events</rec:Val>

              <!-- mode is one of: index, serializeAndStore, default=index -->

              <rec:Val key="mode">serializeAndStore</rec:Val>

            </rec:Map>

 

The search Pipelet would have a corresponding setting to de-serialize it.

But then we bloat the solr pipelets too much and factoring out this kind of functionality is actually better….

 

Thomas Menzel @ brox IT-Solutions GmbH

 

From: smila-user-bounces@xxxxxxxxxxx [mailto:smila-user-bounces@xxxxxxxxxxx] On Behalf Of Nick
Sent: Dienstag, 12. Juni 2012 18:38
To: Smila project user mailing list
Subject: Re: [smila-user] Record metadata mapping in Solr

 

Hi Thomas,

right know I just need the simple store/retrieve case, thus I think that the serialization solution you proposed should be ok.

Thank you,

Nicolò

Il giorno 12/giu/2012 18:23, "Thomas Menzel" <tmenzel@xxxxxxx> ha scritto:

Hi Nick,

 

i would need more info on ur use case:

-          is it just a matter of putting the info into the index and return it but not query/filter on it

-          OR do u want to filter also on any of these values as well? What kind of filters are there and needs to be a relationship between maintained between the indexed values?  

-          Is there any other data in the record that needs to be indexed besides these events and how is their relationship (1:1, 1:N, …)? (bare in mind that an index is just like a flat table with no support for expressing relationships between a main document and some nested entity)

-          How to do you want the events to be presented in the search result list (SRL)?

 

In the first case, if you just want to store and retrieve it, you would just need to “serialize” the Seq into a string that is put into an unindexed/tokenized solr field and desterilize it again after retrieval. These steps could be performed by a custom Pipelet that is called before calling the solr index and after the solr search Pipelet, respectively.

 

Thomas Menzel @ brox IT-Solutions GmbH

 

From: smila-user-bounces@xxxxxxxxxxx [mailto:smila-user-bounces@xxxxxxxxxxx] On Behalf Of Nick
Sent: Dienstag, 12. Juni 2012 16:25
To: Smila project user mailing list
Subject: Re: [smila-user] Record metadata mapping in Solr

 

Hi Thomas,

thank you for the reply,

I would like to index in the Solr Core a metadata like this:

"events" = {
 {"ID"="event1", "timestamp"="1", "description"="event n°1"},
 {"ID"="event2", "timestamp"="10", "description"="event n°2"},
 {"ID"="event3", "timestamp"="20", "description"="event n°3"}
}

And I would like to be able to retrieve such values at query time and display them in the result page.

Nicolò

2012/6/12 Thomas Menzel <tmenzel@xxxxxxx>

hi nick,

solr supports only mapping of Values and Seqs of Values. the latter requires the solr field type to be multi valued.

how would you suggest an automapping of maps?

key name -> field name and value -> value?

Thomas Menzel @ brox IT-Solutions GmbH

(sent from mobile device)

Nick <nick.aquilini@xxxxxxxxx> wrote:

Hello,

I would like to index in a Solr Core records that contain a metadata, that is a sequence (AnySeq) of some maps (AnyMap).
Which configuration I need to declare in the schema.xml of the Solr Core?
I already search through the Solr wiki but I can't find out the solution.

Thanks,

Nicolò

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