Hi Ray,
Perhaps this?
user> (let [desired-entity-names (set (map entity-names [:model :project]))]
(select #(desired-entity-names (:entity %))
query-parts))
#{{:entity "Model", :main-query "select * from model where ..."}
{:entity "Project", :main-query "select * from project where ..."}}
All the best,
Tj
On Friday, May 31, 2013 10:18:09 PM UTC+2, mond wrote:
>
> Sometimes its just so frustrating when you know you are close but just
> cannot get that last little bit ... so I am appealing again for more newbie
> support
>
> I have a map for some names:
>
> user=> (def entity-names {:project "Project" :model "Model"})
>
> Which I then reference in a set of maps:
>
> user=> def query-parts #{{:entity (entity-names :project )
> :main-query "select * from project where ..." }
> {:entity (entity-names :model )
> :main-query "select * from model where ..." }})
>
> This query-parts is actually a large set. It will form the basis of
> execution and sometimes I want to execute a smaller set of the queries.
>
> So I want to be able to filter it based on a subset of the entity names,
> for example just :model.
>
> user=> (select #(= (:model entity-names) (:entity %)) query-parts)
> #{{:entity "Model", :main-query "Model Query"}}
>
> So that works great.
>
> But I would like a list of entities (:model :project :foo :bar) that
> represents a subset of the complete set of query parts.
>
> So I just (sic!) need some advice on how to run this select over a list of
> entity names rather than just the one shown above.
>
> I'm ashamed to say that I have spent an hour on this already so this is my
> white flag. I hope you can help.
>
> Thanks
>
> Ray
>
>
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