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FelixLoew - 13 Jan 2004
The
MarkerLoader carries the global context and is the control component of the system. It is responsible for the configuration of the
MarkerLoader and for starting and shutting down the
StateMachine.
Needs & Abilities
As stated in the
Chair.MarkerConfiguration.xml file, the service has the following Needs and Abilities.
- Need: name="PatternConsumer" type="PatternData"
This is needed to connect to the
MarkerDetection and configure it with the current set of markers. Before a new configuartion the markers have to be unloaded first.
- Need: name="StateMachine" type="RoomInfo"
Here you enable the
StateMachine to set a new context if a context change occurs. Please not here that a predicate is set in order to startup
StateMachine with the right context.
- Need: name="MLConfig" type="Configuration"
This is necessary for a reference on the Configuration service that provides
MarkerData? for each context situation. This data is queried and the pushed to the
MarkerDetection (via method call).
Interaction with other Services
MarkerData? is queried from the Configuration database.
This
MarkerData? is pushed to the
MarkerDetection.
The
MarkerConfiguartion? requests a
StateMachine with a specific configuration (due to the current context). The
StateMachine is started (startOnDemand). The old
StateMachine dies (stopOnNoUse).
More Documentation
How-To
Usage
Example: MarkerConfiguration
Testing
Set up the whole system. Or only test parts of the functionality(eg. configuration of the
MarkerDetection, startup of the
StateMachine).
Configuration
MarkerData? has to be inserted into the Database (Configuration).
If you start the system a intial state has to be specified in the need for a
StateMachine (e.g. user starts in the kitchen).
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FelixLoew - 11 Dec 2003
