ExternalVendorCode/openmct
1
0
Fork 0
mirror of https://github.com/nasa/openmct.git synced 2024-12-23 15:02:23 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity

[Documentation] Complete framework arch

Browse Source 
MissionControl/vista#21
This commit is contained in:
Victor Woeltjen 2015-08-04 14:55:52 -07:00
parent 926ee14546
commit f8dd69bbfa
2 changed files with 34 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

30
docs/src/architecture/Framework.md
View File

@ -137,6 +137,36 @@ in the [Platform Architecture](Platform.md).
### Extension Categories
One of the capabilities that the framework component layers on top of
AngularJS is support for many-to-one dependencies. That is, a specific
extension may declare a dependency to _all extensions of a specific
category_, instead of being limited to declaring specific dependencies.
```nomnoml
#direction: right
[Specific Extension] 1 o-> * [Extension of Some Category]
```
This is useful for introducing specific extension points to an application.
Some unit of software will depend upon all extensions of a given category
and integrate their behavior into the system in some fashion; plugin authors
can then add new extensions of that category to augment existing behaviors.
Some developers may be familiar with the use of registries to achieve
similar characteristics. This approach is similar, except that the registry
is effectively implicit whenever a new extension category is used or
depended-upon. This has some advantages over a more straightforward
registry-based approach:
* These many-to-one relationships are expressed as dependencies; an
extension category is registered as having dependencies on all individual
extensions of this category. This avoids ordering issues that may occur
with more conventional registries, which may be observed before all
dependencies are resolved.
* The need for service registries of specific types is removed, reducing
the number of interfaces to manage within the system. Groups of
extensions are provided as arrays.
### Composite Services
Composite services (registered via extension category `components`) are

4
docs/src/architecture/index.md
View File

@ -11,6 +11,10 @@ The target audience includes:
Open MCT Web into a larger system, who need to understand
its inner workings sufficiently to complete this integration.
As the focus of this document is on architecture, whenever possible
implementation details (such as relevant API or JSON syntax) have been
omitted. These details may be found in the developer guide.
# Overview
Open MCT Web is client software: It runs in a web browser and