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Chapter 4. Measuring Evolving Software Abbv. Name Description NOM Method Count Number of methods AMC Abstract Number of abstract methods Method Count RMC Protected Number of protected methods Method Count PMC Public Method Number of public methods Count IMC Private Method Number of private methods Count SMC Static Method Number of methods with a static modifier Count FMC Final Method Number of methods with a final modifier Count YMC Synchronized Method Count Number of methods with a synchronized modifier NOF Field Count Number of fields defined PFC Public Field Number of fields with a public modifier Count IFC Private Field Number of fields with a private modifier Count RFC Protected Field Number of fields with a protected modifier Count FFC Final Field Number of fields with a final modifier Count SFC Static Field Number of fields defined with a static modifier Count ZFC Initialized Field Number of fields initialised when declared Count UFC Uninitialized Number of fields uninitialized when declared Field Count INC Interface Count Number of interfaces implemented. EXC Exception Number of exceptions raised by the methods Count CCC Class Constructor Count Number of constructors defined. This value will always be ≥ 1 since the compiler always generates a default constructor, even if one was not provided in the source code. Table 4.2: Direct count metrics computed for both classes and interfaces. 79
Chapter 4. Measuring Evolving Software Abbv. Name Description CBC Try-Catch Block Number of try-catch blocks Count THC Throw Count Number of throw statements ICC Inner Class Number of inner classes (counted recursively) Count MCC Method Call Number of method calls Count MCI Internal Method Number of internal method calls (that is, methods Call Count defined in the same class) MCE External Method Number of times methods defined outside of the Call Count class are invoked LVC Local Variable Number of local variables defined across all Count methods in the class OOC Instance Of Number of times the instanceof operator is Check Count used CAC Check Cast Number of times a cast is checked for Count TCC Type Construction Number of times a new object is created Count CLC Constant Load Number of constants loaded from a local variable Count PLC Primitive Load Number of times a primitive is loaded from a local Count variable PSC Primitive Store Number of times a primitive is stored into a local Count variable ALC Array Load Count Number of arrays loaded from a local variable ASC Array Store Count Number of arrays stored into a local variable FLC Field Load Count Number of times an object or primitive is loaded from a field FSC Field Store Count Number of times an object or primitive is stored into a field LIC Load Count Total number of load operations (is a sum of PLC, ALC, FLC, and CLC) SIC Store Count Number of store operations (is a sum of PSC, ASC, and FSC) IOC Increment Operation Number of times the increment operation is used Count ZIC Zero Operand Instr. Count Number of bytecode instructions that have no operands ITC Instruction Number of bytecode instructions Count NOB Branch Count Number of branch instructions (counts all conditional branches including the cases inside a switch statement as well as for and while loops) GTC Goto Count Number of times a goto instruction is used (this is generated when the source code contains loop constructs and is generally paired with a branch instruction) Table 4.3: Metrics computed by processing method bodies of each class. The mapping between these measures and the bytecode is presented in Appendix C. 80
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Growth and Change Dynamics in Open
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Dedicated to all my teachers ii
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Declaration I declare that this the
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7. R. Vasa, M. Lumpe, P. Branch, an
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Contents 3.4 Selection Criteria . .
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Contents 5.4.5 Identifying Change u
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Contents 7.2.2 Software Metric Tool
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List of Figures 4.7 Class diagram s
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List of Figures 6.9 Probability of
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List of Tables 5.2 Spearman’s Ran
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Chapter 1. Introduction in the laws
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Chapter 1. Introduction models that
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Chapter 1. Introduction compute at
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Chapter 1. Introduction undergo con
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Chapter 2 Software Evolution How do
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Chapter 2. Software Evolution Proce
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Chapter 2. Software Evolution Softw
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Chapter 2. Software Evolution devel
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Chapter 2. Software Evolution [59,
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Chapter 6 Change Dynamics It is a w
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Chapter 6. Change Dynamics 6.1 Dete
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Chapter 7. Implications ically, we
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Chapter 7. Implications ciently bro
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Chapter 7. Implications where a sof
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Chapter 8. Conclusions • We prese
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Chapter 8. Conclusions [302], and g
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Appendix A Meta Data Collected for
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Appendix C Mapping between Metrics
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Chapter D. Metric Extraction Illust
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Appendix F Change Dynamics Data Fil
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References [1] S. Alam and P. Duger
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References Software. In Proceedings
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References [43] N. Chapin, J. Hale,
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References [68] M. Di Penta, L. Cer
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References [91] C. Gini. Measuremen
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References [115] I. Held. The Scien
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References [140] H. Kagdi, S. Yusuf
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References [164] M. Lanza, H. Gall,
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References [190] T. J. McCabe. A Co
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References [214] H. Olague, L. Etzk
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References [242] C. Roy, J. Cordy,
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References [266] G. Succi, W. Pedry
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References ECOOP Workshop on Quanti
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References [315] T. Zimmermann, V.
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