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https://issues.apache.org/jira/browse/SOLR-2580?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13046514#comment-13046514
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Tomás Fernández Löbbe commented on SOLR-2580:
---------------------------------------------
Basically, it's just another component designed to modify the relevancy of
documents, as the QueryElevationComponent is. Of course, this could be
implemented by each site on the application layer but I think it would be very
helpful to write one reusable component, then everybody can use the same, they
don't reinvent the wheel and they can invest the effort in improving it.
Should it be included in Solr? Personally I think this is something that can be
useful to many people and it will add value to Solr. At the end, the community
and the committers will decide if they think this is something worthily or not.
JBoss AS is the application server, but JBoss is also an organization that runs
many projects (like drools). You don't need to use any application server in
particular to make Drools work. It's a library, not an application itself.
> Create a new Search Component to alter queries based on business rules.
> ------------------------------------------------------------------------
>
> Key: SOLR-2580
> URL: https://issues.apache.org/jira/browse/SOLR-2580
> Project: Solr
> Issue Type: New Feature
> Reporter: Tomás Fernández Löbbe
>
> The goal is to be able to adjust the relevance of documents based on user
> defined business rules.
> For example, in a e-commerce site, when the user chooses the "shoes"
> category, we may be interested in boosting products from a certain brand.
> This can be expressed as a rule in the following way:
> rule "Boost Adidas products when searching shoes"
> when
> $qt : QueryTool()
> TermQuery(term.field=="category", term.text=="shoes")
> then
> $qt.boost("{!lucene}brand:adidas");
> end
> The QueryTool object should be used to alter the main query in a easy way.
> Even more human-like rules can be written:
> rule "Boost Adidas products when searching shoes"
> when
> Query has term "shoes" in field "product"
> then
> Add boost query "{!lucene}brand:adidas"
> end
> These rules are written in a text file in the config directory and can be
> modified at runtime. Rules will be managed using JBoss Drools:
> http://www.jboss.org/drools/drools-expert.html
> On a first stage, it will allow to add boost queries or change sorting fields
> based on the user query, but it could be extended to allow more options.
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