Voyage and Association

Hi,

I am having trouble to persist in a Voyage repository Association formed
with a key being a non string object (let's say a Month) and value a non
basic object, instance of a model object.

So far, I have an error bsonTypeCode not understood on my value object.
I could implement bsonTypeCode, but I suspect I will have trouble too
with the key, as I see from Voyage code it is persisted as a String.

An idea how to overcome this (without modifying my model)?

Fuel was persisting it fine.

Thanks

Hilaire

--
Dr. Geo
http://drgeo.eu

Hi Hilaire,

the thing is mongo is JSON based and in JSON dictionaries are key-string, value-anything so we cannot persist them “as is”.
To do that I use a trick which is convert them to collections before persisting, using a helper class that comes with Voyage-Mongo, VOMongoKeyPair.

For example, you could describe your dictionary attribute as this:

mongoValue
        <voyageDescription>
       
        ^VOToManyDescription new
                attributeName: 'value';
                convertNullTo: [ Dictionary new ];
                accessor: (MAPluggableAccessor
                        read: [ :anObject |
                                anObject value associations
                                        collect: [ :each | VOMongoKeyPair fromAssociation: each ] ]
                        write: [ :anObject :value | (value collect: #asAssociation) asDictionary ]);
                yourself

hope this helps,

cheers!
Esteban

It will, thanks

Le 01/03/2017 à 20:42, Esteban Lorenzano a écrit :
> hope this helps,

--
Dr. Geo
http://drgeo.eu