ADS filtering object (Datatype:datetime)

[Kasia Kryczka]

HI,

How can I filter the object to get for example a date older than 2 months from now ?

The triple looks as follows:

object  :05.07.2023 07:24

predicate : http://purl.org/dc/terms/created

subject urn:x-change:2023-07-05T07-24-46.612example

Thanks,

Kasia

[Holger Knublauch]

let months = 2;

let maxTime = graph.eval(`NOW() - "P${months}M"^^xsd:duration`);

let changes = tbs.changes(null, maxTime);

changes;

The above works for the change history only. If you need a general solution, you can use a corresponding SPARQL expression such as

graph.eval('$value < $date', {

value: ... the object ...,

date: maxTime,

})

HTH

Holger

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[Kasia Kryczka]

Hi Holger,

many thanks for quick reply :)

I want for the the change history which will be later used for all collections.

with the first solution I got the following error : and I just 

Error: Cannot execute SELECT query SELECT ?change ?comment ?time ?userId ?addedCount ?deletedCount WHERE { ($about $maxTime $minTime $predicate $requiredUserId $committedOnly $unlimited $originWorkflowId $returnCounts) <http://topbraid.org/tbs#changes> (?change ?comment ?time ?userId ?addedCount ?deletedCount) }: java.lang.IllegalStateException: No TCH graph can be derived from the context

Br,

Kasia

[Holger Knublauch]

If you're getting an error executing tbs.changes, you're probably calling from within a graph.withDataGraph block? It should work fine if you're calling it in the context of any asset collection as active graph.

Holger

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[Kasia Kryczka]

Hi Holger,

I used graph.transaction, without that it worked just fine :)

Thanks,

Kasia