A Case for Component Based Software Engineering. Maurizio Morisio, Michel Ezran and Colin Tully IEEE Transactions on Software Engineering, May 2003

Transcription

1 A Case fr Cmpnent Based Sftware Engineering Success and Failure Factrs in Sftware Reuse Maurizi Mrisi, Michel Ezran and Clin Tully IEEE Transactins n Sftware Engineering, May 2003 Raihan Al-Ekram Schl f Cmputer Science University f Waterl July 28, 2005 Backgrund Systematic reuse is generally cnsidered a key technlgy t imprve the sftware prductivity and quality Technical factrs f reuse Prgramming language supprt Repsitries Tls fr searching reusable artifacts Nn-technical factrs Organizatin Prcess Business drivers Human invlvement Success and Failure Factrs in Sftware Reuse 2

2 Prject Surprise Gal Identifying key factrs in adpting r running a cmpany wide reuse prgram Key factrs derived frm empirical evidence f best reuse practices Data Surce EC funded 288 industrial PIEs during 1994 t f them judged t be dealing with reuse 24 prjects in 19 cmpanies interviewed Success and Failure Factrs in Sftware Reuse 3 Survey Questinnaire General infrmatin Lcatin, business dmain, number f emplyees Nn-reuse infrmatin Sftware prcess, analysis and design techniques Prject duratin, effrt, staff size and experience Prduct type, language, perating system Reuse infrmatin Organizatinal mtivatin, expectatin, gal, cmmitment Reuse prcess and rles Repsitry, asset size, functins, generatin apprach Success and Failure Factrs in Sftware Reuse 4

3 Survey Data Set State variables Attributes ver which cmpany has n cntrl Cntrl variables Attributes a cmpany can cntrl High level cntrl variables are higher level management decisins Lw level cntrl variables are either influenced by the high level decisins r implementatin specific decisins taken at lwer level f authrity Success Cntinuatin f reuse after the PIE is ver If assets were actually reused Success and Failure Factrs in Sftware Reuse 5 State Variables Shaded rws are failures Success and Failure Factrs in Sftware Reuse 6

4 Cntrl Variables: High-Level Success and Failure Factrs in Sftware Reuse 7 Cntrl Variables: Lw-Level Success and Failure Factrs in Sftware Reuse 8

5 Analysis: State Variable State variables d nt have significant implicatins Sftware staff, verall staff has n affect n success r failure f the prjects. Successful and unsuccessful prjects belng t all categries Majrity f cmpanies are with a gd maturity level. Prcess maturity r staff experience may be useful but appears t have n impact n the success r failure f prjects Type f sftware prductin has predictive imprtance. Althugh type f sftware and applicatin dmain has n singnificance OO Reuse Success and Failure Factrs in Sftware Reuse 9 Analysis: Cntrl Variables High-level cntrl variables Successful prjects have a yes value fr all f them, except prject U and W Failed prjects have three r mre n values Tp management cmmitment All successful prjects had tp management cmmitment Prjects with tp management cmmitment failed as well Cmmitment frm the leader is a key but nt sufficient Prcesses and Human factrs Intrducing reuse prcesses and mdifying nn-reuse prcesses are the key pints fr success, fr which tp management cmmitment is a pre-requisite Human factrs must be addressed Success and Failure Factrs in Sftware Reuse 10

6 Analysis: Cntrl Variables Key reuse rles and repsitry Intrducing key reuse rles r setting up a repsitry are nt sufficient fr successful resuse Lw-level cntrl variables A reward plicy t prmte reuse never succeeded Qualificatin f reuse assets and cnfiguratin managements are imprtant Success and Failure Factrs in Sftware Reuse 11 Analysis: Failures Prjects D, E, F Nt enugh reuse ptential Prcesses nt mdified Repsitry, but n awareness Reward plicy, but n qualificatin Prjects I, J, Y N tp management cmmitment Reuse repsitry, prcesses nt prperly mdified N qualificatin f assets, N awareness Prjects O, T Embedded-RT, Multi-cntractr/multi-cmpany, n wnership f chice f hardware and requirement Reusable assets prduced but nt used Success and Failure Factrs in Sftware Reuse 12

7 Cnclusin Key factrs in adpting a reuse strategy Reuse ptential Prduct family has mre ptential Reuse capability Obtain management cmmitment fr resurces Reuse implementatin Add reuse specific prcesses Mdify nn-reuse prcesses Address human factrs Setup a repsitry Qualify assets Success and Failure Factrs in Sftware Reuse 13