Dang it, I could have sworn that I had tried that combination but actually
was missing the set wrapping the map!
So thanks TJ - great work and I really appreciate the support.
Ray
On Saturday, June 1, 2013 3:26:32 AM UTC+2, Tj Gabbour wrote:
>
> 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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