Obtain end-valid time of a document

[lgrapenthin]

How to obtain end valid time of a document, given that it exists?

[refset]

Hi, you can use the entity-history (or open-entity-history) API for this. e.g.

(-> node
    (crux/submit-tx [[:crux.tx/put {:crux.db/id :foo} #inst "2021-01-01" #inst "2021-01-02"]])
    (crux/await-tx))

(crux/entity-history (crux/db node) :foo :desc)
;; =>
[{:crux.tx/tx-time #inst "2021-02-28T10:56:16.632-00:00",
  :crux.tx/tx-id 0, :crux.db/valid-time #inst "2021-01-02T00:00:00.000-00:00",
  :crux.db/content-hash #crux/id 0000000000000000000000000000000000000000}
 {:crux.tx/tx-time #inst "2021-02-28T10:56:16.632-00:00",
  :crux.tx/tx-id 0, :crux.db/valid-time #inst "2021-01-01T00:00:00.000-00:00",
  :crux.db/content-hash #crux/id 91ef073d59b7ba3f52dbb6f6f58181dcfc2f44a4}]

The end-valid-time is modelled implicitly, equivalent to a :crux.tx/delete, which inserts a nil as the document version to represent a delete. i.e. versions are valid until another version is asserted, if at all