1094562 - Speed up Apps.mgmt.getAll() in Gecko

Status: RESOLVED WONTFIX

(Firefox OS Graveyard :: General, defect)

Description

[EJ Chen [:eragonj][:小龍哥][Contributor mode on](inactive)]

In Settings app, there are many places using `mgmt.getAll()` to fetch out needed apps and manipulate UI to decide whether to show some specific panels or not.

After a while, we realized this method is really slow and would affect the load time performance (Please check related bugs below).

And also, usually the normal use case is to fetch out `needed` apps instead of get all apps and do custom filter in each apps. From database perspective, if we can do a query to fetch out needed records from indexes would be quicker than iterating all records.

So It would be better to have an API like 


```
1) Get theme apps

mgmt.getAll({
  type: 'theme'
})

2) Get homescreen apps
mgmt.getAll({
  type: 'homescreen'
})

3) Get all apps
mgmt.getAll()
```

By doing so, Gaia can get benefits a lot without doing custom filtering and get results faster.

-- Related bugs --
bug 1093943
bug 1086167

Comment 1

[[:fabrice] Fabrice Desré]

Why don't you cache the result of getAll() instead of calling it many times?

Comment 2

[BMO Automation]

Firefox OS is not being worked on