Table 5.

The benefits of the QoCIM framework within a Distributed Context Manager.

General Purpose	QoCIM Framework Feature
	Application to the Pollution Scenario
Modelling QoC criteria	At design time, developers use the graphical editor to define primitive or composite QoC criteria.
	With the editor, defining the refresh rate, precision, spatial resolution, uncertainty and accuracy QoC indicators separately. Then, configure the relations between the accuracy definition and the uncertainty and precision.
Qualifying context information	At programming time, developers use the editor to generate and complete the source code corresponding to the QoC criteria they choose for their applications.
	Fill-in the method getQoCMetricValue() with the algorithm described in Section 5.1 and 5.2. (Class QoCMetricDefinition in the Maven module named qocim-common)
Processing QoC meta-data	Because all the QoC criteria are based on the same meta-model, QoCIM eases the implementation of generic QoC transformation functions.
	Implementing the algorithm described in Section 6.2 with the functions available in the Maven module named qocim-functions.
Expressing QoC guarantees	The QoCIM framework provides methods to transform instances of QoC indicators into constraints that reflect the capabilities of a producer in terms of QoC.
	In the Maven module qocim-routing-filter, using instances of the QoC indicators as parameters of the methods addQoCCriterionConstraints and addQoCValueConstraints in the class IQoCIMRoutingFilterGenerator
Expressing QoC requirements	The QoCIM framework provides methods to transform instances of QoC indicators into constraints that reflect the needs of a consumer in terms of QoC.
	In the Maven module qocim-routing-filter, using instances of the QoC indicators as parameters of the methods addQoCCriterionConstraints and addQoCValueConstraints in the class IQoCIMRoutingFilterGenerator