modification date should bubble up to parents/composites

[Malte]

... when an aggregated/composed ChildTopic? is modified, the parents modification date should also be updated.

At the moment a plugin devloper has to do this manually and this may lead to unwanted presentations, (since the new HTTP Cache module is build around any topics modification date).

This is uncritical and just for our convenience.

[jri]

A prerequisite is addressed in #587.

[Jörg Richter]

Time plugin: modification time bubbles up (#510).

When a topic is updated, and the topic is a child of one or more composite topic/association the modification timestamp bubbles up to all the composites (including the intermediate topics).
Thus the browser cache is invalidated and an up-to-date composite is retrieved.

Close #510.

• Changeset: 54c2a59c36dd09d45bad1d5fb0dd7f08e3ee7428
• URL: ​https://github.com/jri/deepamehta/commit/54c2a59c36dd09d45bad1d5fb0dd7f08e3ee7428

[Malte]

I still have the issue that I need to call explicitly some "dms.updateTopic(parentTopic.getId())" so that a new timestamps is set.

Apparently, when udpating topic via just using

twitterSearch.getCompositeValue().set(TWITTER_SEARCH_REFRESH_URL_URI,
        refreshUrl, clientState, new Directives());

the timestamp seems not to bubble up.
Can you confirm this?

[jri]

Confirmed!

Yes, the timestamp bubbles up only when the update is performed via dms.update() or topic.update() or assoc.update(), but not via comp.set().

This will be fixed in DM 4.4.1 which will be released this week.

Thank you very much for reporting!

[Jörg Richter <jri@…>]

In 89889c689569025d5b1aa12bf7e03898918bab44/deepamehta:

Core: fix firing the update event (#510).

The POST_UPDATE_TOPIC_REQUEST core event is fired also in case a topic/assoc is updated by calling set() directly on its composite value (called "child topics" since 4.4).

In particular this means that the Time module lets bubble up the changed modification date to the parent topic/association(s).

See #510.

[Malte]

Good to hear, thank you very much!