MTJ architecture
This section provides information on the general architecture of MTJ.
MTJ overview
The MTJ implementation is a collection of modular plug-ins. The MTJ
Core plug-in provides extension points to glue the architecture together.
MTJ can be extended by utilizing one or more extension points defined
in the core. The figure below illustrates the relationship between an
extension and the core framework
MTJ extension points can be divided by their functionality into three categories
:
- Extendable Frameworks extension points
- Service Extensions points
- Extended service extension points
MTJ Core’s defined extension points in layer categories and corresponding
Java interfaces are:
MTJ
Framework Plug-in Extension Points:
- Device Management: org.eclipse.mtj.core.deviceManagement
- GUI Builder Management: org.eclipse.mtj.core.guiBuilderManagement
- Build Management: org.eclipse.mtj.core.buildManagement
- Security Management: org.eclipse.mtj.core.securityManagement
- Deployment Management: org.eclipse.mtj.core.deploymentManagement
Eclipse-dependent Plug-in Extension Points:
- Build Provider: org.eclipse.mtj.core.buildProvider
- Device Platform Provider: org.eclipse.mtj.core.devicePlatformProvider
- Device Description Provider: org.eclipse.mtj.core.deviceDescriptionProvider
- GUI Builder Provider: org.eclipse.mtj.core.guiBuilderProvider
- Screen Engine Provider: org.eclipse.mtj.core.screenEngineProvider
- Admin GUI Provider: org.eclipse.mtj.core.adminGuiProvider
Standalone Plug-in Extension Points:
- Preprocessing Provider: org.eclipse.mtj.core.preprocessingProvider
- Obfuscation Provider: org.eclipse.mtj.core.obfuscationProvider
- Packaging Provider: org.eclipse.mtj.core.packagingProvider
- Signing Provider: org.eclipse.mtj.core.signingProvider
- Deployment Provider: org.eclipse.mtj.core.deploymentProvider
Dependencies between different extension implementations follow the three
layers that come from the categorization.
For
example, the Device Management extension, which belongs to Extendable
Frameworks extension points layer, uses the Device Platform Provider and
Device Description Provider extensions, which are Service Extension points
layer’s implementation.
All
the extension point definitions use MTJ’s common data structures. Implementation
of them is based on Eclipse Modeling Framework (EMF).
MTJ Core Model and enumerations
MTJ
common data model implementations are done with EMF. The detailed Rose
model of the implementation can be found in Eclipse CVS. The figure below
illustrates the locations of the model in the Eclipse CVS:
For
general Eclipse CVS directions, go to http://wiki.eclipse.org/index.php/CVS_Howto.
Valid
value-groups of different attribute types are defined as enumerations
inside the corresponding Java class. Current definitions for MTJ UML/EMF
enumerations are defined in the figure below.
Admin Gui Provider
MTJ
Development IDE depends on MTJ Core Plug-in. It also publishes a new extension
point, the Admin GUI Provider, that is used to add new functionalities
to MTJ Development IDE. All MTJ extension point implementers, like the
Device Platform Provider, that need Administration GUIs, must implement
the Admin GUI Provider extension point.
Runtime management framework
Build process framework
Package creation framework
Security management framework
Signing framework
Deployment framework
Checking out MTJ code from CVS
Javadocs