Using conj instead of into, for no particular reason, except debugging. The
document is slowly built-up:
({:company_profile_id [["2"]], :topic :company, :url
[["mikeshawauto.com"]]})
({:company_profile_id [["2"]], :topic :company, :url
[["mikeshawauto.com"]]})
({:company_profile_id [["2"]], :topic :company, :url
[["mikeshawauto.com"]], :reference_id [["331089191"]]})
In the transition from row 1 to row 2, I assume the field being added is
company_profile_id. Why is there no change? Why isn't a new value added to
the vector? I must be missing something obvious.
On Wednesday, October 11, 2017 at 11:44:40 AM UTC-4, lawrence...@gmail.com
wrote:
>
> I seem unable to figure out where I made a mistake, though this should be
> simple.
>
> I have two SQL calls that bring back 5 fields:
>
> SELECT company_profile_id , reference_id, reference_source FROM
> company_reference_id limit 1 ;
>
> +--------------------+--------------+------------------+
> | company_profile_id | reference_id | reference_source |
> +--------------------+--------------+------------------+
> | 2 | 331089191 | EIN |
> +--------------------+--------------+------------------+
>
> SELECT company_profile_id, url FROM company_website limit
> 1 ;
>
> +--------------------+------------------+
> | company_profile_id | url |
> +--------------------+------------------+
> | 2 | mikeshawauto.com |
> +--------------------+------------------+
>
> This brings back a total of 5 values. I need to have a document that has 5
> values, though if values have the same field-name, then I want to
> consolidate them into one vector. There are 4 unique field names, so I
> expect to end up with 4 vectors, holding 5 values. Instead, I get this:
>
> ({:company_profile_id ["2"], :topic :company,
> :how-many-rows-and-fields-from-database 13, :url ["mikeshawauto.com"],
> :reference_id ["331089191"], :reference_source ["ein"]})
>
> I expect:
>
> {:company_profile_id ["2" "2"]
>
> but I get:
>
> {:company_profile_id ["2"]
>
> The documents are combined in a map in an atom, with this function:
>
>
> (def documents (atom {}))
>
>
> (defn update-documents
> [denormalized-id field-name field-value
> how-many-rows-and-fields-from-database topic]
> {:pre [
> (not (nil? denormalized-id))
> (not (nil? field-name))
> (vector? field-value)
> ]}
> (swap! documents
> (fn [old-documents]
> (slingshot/try+
> (let [
> document (get old-documents denormalized-id {})
> old-field-value (get old-documents field-name [])
> new-field-value (into old-field-value field-value)
> document (assoc document field-name new-field-value)
>
> previous-how-many-rows-and-fields-from-database (get
> document :how-many-rows-and-fields-from-database 0)
> new-how-many-rows-and-fields-from-database (+
> previous-how-many-rows-and-fields-from-database
> how-many-rows-and-fields-from-database)
> document (assoc document :topic topic)
> document (assoc document
> :how-many-rows-and-fields-from-database
> new-how-many-rows-and-fields-from-database)
> new-documents (assoc old-documents denormalized-id
> document)
> ]
> new-documents)
> (catch Object o
> (errors/log o)
> (slingshot/throw+ {
> :type ::update-documents
> :error o
> }
> ))))))
>
> Can I assume that this always gives me 2 values in a vector?
>
> old-field-value (get old-documents field-name [])
> new-field-value (into old-field-value field-value)
> document (assoc document field-name new-field-value)
>
> I'm going to guess that the bug is somewhere else in my code. But if
> anyone sees a flaw in this function, I'd be grateful if you could point it
> out to me.
>
>
>
>
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