Assessment of metrics for the Product Lines context Márcio Ribeiro (CIn-UFPE) Camila Nunes (LES-PUC-Rio) Fernanda d’Amorim (CIn-UFPE) Rodrigo Bonifácio (CIn-UFPE) Paulo Borba (CIn-UFPE)
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Assessment of metrics for theProduct Lines context
Márcio Ribeiro (CIn-UFPE)Camila Nunes (LES-PUC-Rio)
Fernanda d’Amorim (CIn-UFPE)Rodrigo Bonifácio (CIn-UFPE)
Paulo Borba (CIn-UFPE)
2
Applying actual metrics…
120x160
Concern: Screen Size
176x208 128x128
CDC(Screen Size) = 3
3
CDC(Screen Size) = 3
Seems to be bad ifwe consider one product!
But for Product Linesseems to be good!
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This way…
Do we need different metricsfor Product Lines?
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Agenda
Applying metrics in subfeatures
New metrics
Case study representativity
Framework and future work
6
Applying metrics in subfeatures
CDC(Screen Size) = 3
CDC(120x160) = 1
CDC(176x208) = 1
CDC(128x128) = 1
Variants
CVDC(120x160) = 1
CVDC(176x208) = 1
CVDC(128x128) = 1
Concern Variant Diffusion over Components
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So…
CVDC = CDC applied to subfeatures?
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A second example
//#ifdef device_screen_176x205//# //# public static final int LOADING_MESSAGE_AREA = 154;//#//#elif device_screen_128x160//#//# public static final int LOADING_MESSAGE_AREA = 118;//#//#elif device_screen_132x176//#//# public static final int LOADING_MESSAGE_AREA = 118;
CDLOC(Screen size) = 2CVDLOC(176x205) = 2;CVDLOC(128x160) = 2;CVDLOC(132x176) = 2;
Tangling!
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Again…
CVDLOC = CDLOC applied to subfeatures?
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Calculating metrics for subfeatures
It is important! Not so scattered (CDC, CVDC example) Mora tangled (CDLOC, CVDLOC example) Complexity
CVLOC(UML) = 2000
CVLOC(Java) = 1000
CLOC(Notation) = 3000
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New metrics?
CVDC
NCVC
CVLOC
CVDLOC
Or are they the same but applied under a
different perspective?
12
Case study representativity
Feature types (mandatory, optional, XOR, OR) Granularity (coarsed and fine) Crosscutting, not crosscutting Functional, non-functional Homogeneous, Heterogeneous Feature interaction Binding times (static and dynamic) Different sizes
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Possible case studies
Mobile Media Mandatory, Optional, OR
Freemind Optional Fine-grained Crosscutting Heterogeneous Different binding times
ArgoUML Alternative Not crosscutting Coarsed-grained
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Concluding Remarks
Future work Analyze more metrics If needed, define new ones Apply them in case studies Define a framework
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