Core API: fetch a DeepaMehtaObject's childs selectively

[jri]

In conjunction with implementing a ViewmodelCustomizer? (see #505):

When a topicmap is fetched from the DB the developer might want fetch certain (or all) childs of the (or some) topics contained in the topicmap, e.g. fetching a Note's body text. By default no childs are fetched, only the topic's value (= Title in case of Note topics) is contained in the topicmap send to the client.

Objective of this ticket is equipping the DeepaMehtaObject? API with a fetchChild(typeUri) (and possibly fetchAllChilds()) method. So the developer of a ViewmodelCustomizer? can call it on the topic passed to the enrichViewProperties() hook (which possibly should be renamed enrichTopic then).

[Jörg Richter]

Core: extend DeepaMehtaObject? API (#522, #505).

The DeepaMehtaObject? base interface specifies a new method:

void loadChildTopics(String childTypeUri)

It loads the object's childs specified by its type URI.
If the childs are loaded already nothing is performed.
Can be used for both, "one" and "many"-valued childs.

This method is of interest for Viewmodel Customizer implementers (see #505).

See #522.

• Changeset: bfffb32f70280ddcfdbc92b179006298da8ff18e
• URL: ​https://github.com/jri/deepamehta/commit/bfffb32f70280ddcfdbc92b179006298da8ff18e

[Jörg Richter]

Core: extend DeepaMehtaObject? API (#522, #505).

The DeepaMehtaObject? base interface specifies a new method:

void loadChildTopics(String childTypeUri)

It loads the object's childs specified by its type URI.
If the childs are loaded already nothing is performed.
Can be used for both, "one" and "many"-valued childs.

This method is of interest for Viewmodel Customizer implementers (see #505).

See #522.

• Changeset: bfffb32f70280ddcfdbc92b179006298da8ff18e
• URL: ​https://github.com/jri/deepamehta/commit/bfffb32f70280ddcfdbc92b179006298da8ff18e

[jri]

A parameter less form, which load *all* child topics (according to the type definition) should be added as well.

void loadChildTopics()

This need originates from the NotiZEN application.

[Jörg Richter]

Core API: add loadChildTopics() method (#522).

The DeepaMehtaObject? base interface specifies a new method:

void loadChildTopics()

It loads all the object's child topics.

Close #522.

• Changeset: a40b76128c7b6b1aa68edbe254e771322dc7ff1a
• URL: ​https://github.com/jri/deepamehta/commit/a40b76128c7b6b1aa68edbe254e771322dc7ff1a