4th International Conference on Principles and Practices ... - MADOC

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element is not a problem. The difference of ACD and BCD value was low amongst all projects. This might be due to the fact that refactorings in prominent IDEs like Eclipse and IntelliJ exist which help the developer to find the best fitting type among all existing. 5. FUTURE WORK AND CONCLUSION We have used an existing refactoring to evaluate both cost and benefit of the most rigorous decoupling as made possible by introducing context-specific types. Our results provide evidence that -as would be expected- rigorous decoupling is not a good idea. Too many unpopular interfaces are introduced during the refactoring. The data we have shown indicate that the best tradeoff between decoupling and number of types is to introduce only the most popular interfaces for classes. We will have to adjust our refactoring and present data which either confirms or disproves our assumption. 6. ACKNOWLEDGMENTS The author thanks Andreas Meißner and Phillip Mayer for implementing most of the described refactoring. 7. REFERENCES [1] Löwy, J. Programming .NET Components, O’Reilly Media, 2005. [2] JChessBoard is available from http://jchessboard.sourceforge.net [3] JUnit is available from http://www.junit.org. [4] Mars is available from http://leapfrog-mars.sourceforge.net/. [5] GoGrinder is available from http://gogrinder.sourceforge.net/. [6] DrawSWF is available from http://drawswf.sourceforge.net/. [7] JHotDraw is available from http://www.jhotdraw.org/. [8] Gamma, E. et al., Design Patterns, Addison-Wesley Professional, 1997. [9] Dean, J. , Grove, D. and Chambers, C., Optimization of object-oriented programs using static class hierarchy analysis, In: Proc of ECOOOP, 1995, 77-101. [10] Steimann, F., Mayer, P. and Meißner, A., Decoupling classes with inferred interfaces, In: Proceedings of the 2006 ACM Symposium on Applied Computing, (SAC) (ACM 2006). [11] Forster, F., Mining Interfaces In Java Programs, Technical Report, Fernuniversität Hagen, 2006. [12] Steimann, F., Role = Interface: a merger of concepts, Journal of Object-Oriented Programming 14:4, 2001, 23–32. [13] Pareto Distribution, http://en.wikipedia.org/wiki/Pareto_distribution, last visit 27.05.2006 [14] Basili, V.R., Caldiera, G. and Rombach, D., The goal question metric approach, In: Encyclopedia of Software Engineering, (John Wiley & Sons, 1994). 29
Appendix A 10 9 8 7 6 5 4 3 2 1 0 1 3 5 7 9 11 13 15 17 19 21 23 25 27 29 31 33 35 37 39 41 43 70 60 50 40 30 20 10 0 1 15 29 43 57 71 85 99 113 127 141 155 169 183 197 211 225 239 253 Figure 1: Popularity of new interfaces in JChessBoard Figure 2: Popularity of new interfaces in DrawSWF 16 14 12 10 8 6 4 2 0 1 8 15 22 29 36 43 50 57 64 71 78 85 92 99 106 113 120 127 134 141 180 160 140 120 100 80 60 40 20 0 1 18 35 52 69 86 103 120 137 154 171 188 205 222 239 256 273 290 307 Figure 3: Popularity of new interfaces in GoGrinder Figure 4: Interface Popularity of JHotDraw 14 12 12 10 10 8 6 4 2 8 6 4 2 0 1 3 5 7 9 11 13 15 17 19 21 23 25 27 29 31 33 35 37 0 1 5 9 13 17 21 25 29 33 37 41 45 49 53 57 61 65 69 73 77 81 85 Figure 5: Interface Popularity of JUnit Figure 6: Interface Popularity of Mars 30
Page 1 and 2: Edited by: Ralf Gitzel, Markus Alek
Page 3 and 4: Message from the Chairs Dear confer
Page 5 and 6: Sam Midkiff, Purdue University (USA
Page 7 and 8: Session F: Novel Uses of Java______
Page 10 and 11: The Project Maxwell Assembler Syste
Page 12 and 13: tomated assembler and disassembler
Page 14 and 15: memory address offset mnemonic argu
Page 16 and 17: 5.2 Instruction Templates The assem
Page 18 and 19: ange for a very short restart/debug
Page 20 and 21: Tatoo: an innovative parser generat
Page 22 and 23: In the grammar file an error termin
Page 24 and 25: Figure 3: Push parsers and lexers L
Page 26 and 27: eturn visit((Expr)p1, param); } R v
Page 28: Session B Program and Performance A
Page 31 and 32: Table 1: Use of interfaces and deco
Page 33 and 34: Table 3: Comparison of the situatio
Page 35: will trigger the creation of many n
Page 39 and 40: Throughout this paper, we make no a
Page 41 and 42: instrumented program and obtained t
Page 43 and 44: Figure 5: Investigation of garbage
Page 45 and 46: to the same category—again, this
Page 47 and 48: Investigating Throughput Degradatio
Page 49 and 50: Figure 1: Apache. Throughput degrad
Page 51 and 52: Minor GC Full GC Workload # of Avg.
Page 53 and 54: Figure 6: Comparing memory and pagi
Page 55 and 56: GenRC on the other hand, allows the
Page 58: Session C Mobile and Distributed Sy
Page 61 and 62: ing a continuous buffer for raw dat
Page 63 and 64: the data arrival speed is more impo
Page 65 and 66: public class StreamingClient { publ
Page 67 and 68: importance of β in our aggregation
Page 69 and 70: Enabling Java Mobile Computing on t
Page 71 and 72: A strongly mobile thread has the ab
Page 73 and 74: a context switch occur. The invoked
Page 75 and 76: above phases. Now, the new stack ha
Page 77 and 78: 5 frames 15 frames 25 frames Pure d
Page 79 and 80: Juxta-Cat: A JXTA-based platform fo
Page 81 and 82: Figure 1: JXTA Architecture. 3. JUX
Page 83 and 84: • Send a discovery query to the p
Page 85 and 86: The best candidate is then the one
Page 87 and 88:
Local Hosts=2 Hosts=4 Hosts=8 Hosts
Page 90:
Session D Resource and Object Manag
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Enterprise Edition (J2EE). It enabl
Page 95 and 96:
As pictured in Figure 4, JDOSecure
Page 97 and 98:
Methods of a PersistenceManager, th
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Datenmodell abstrahiert user role,
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An Extensible Mechanism for Long-Te
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missing object references in the de
Page 105 and 106:
4.2 Mapping the name spaces of the
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(a) (b) ColorSliderPanel0 color
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8. REFERENCES [1] Abu-Ghazaleh, N.,
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permission by process. In other wor
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The processor then refers to the en
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1: // Protection domain 2: struct p
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Table 3: Frequency of JNI calls tha
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[13] Intel Corporation. IA-32 Intel
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01 try { 02 ... 03 } finally { 04 t
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2. FRAMEWORK The Framework for Unif
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ManagedInputStream ResourceGroup Ma
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18. throw ‡ 1. release 17. cleanu
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3. FUTURE WORK The ability to split
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124
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UML sequence diagrams are among the
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diagrams, and behavioral (dynamic)
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the official scripting language for
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Apache's XML Graphics Project. A cu
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Java Debug Interface (JDI). In Revi
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1.3 JML 1.3.1 Overview JML, the Jav
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The Usage of CANAPA is fairly strai
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*@non_null@*/ String str = attribut
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142
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parallel and distributed versions o
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RingElem CextendsRingElem GenPolyno
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RingElem +isZERO():bolean CextendsR
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class constructors with the actual
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plemented via a distributed hash ta
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which are common nowadays. The reus
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Derivative Contract Component Repos
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stepwise execution create Derivativ
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5.4.1 Structural Constraints Struct
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into the conceptual foundation of n
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different implementation and is mor
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the service from the root. It allow
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model: 1. Servlet [6] adapter compo
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y possibly different service, where
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or the fact that widgets extend ser
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174
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The idea of Java 5.0 type inference
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Source := (class | interface)∗ cl
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5. IMPLEMENTATION In order to prese
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Infinite Streams in Java Dominik Gr
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} private static LinkedStream fibon
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of the f stream in order to compute
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Interaction among Objects via Roles
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(a) (b) (c) (d) (e) Figure 1: The p
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class Printer { private int totalPr
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Experiences of using the Dagstuhl M
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Metric Definition Java .class files
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scription of the metric values. Non
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Figure 1: Results from the J-vestig
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an error is subsequently generated
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3. BASIC TERMINOLOGY As object-orie
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• subtyping • (implementation)
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Improving the Quality of Programmin
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Results of online checks (shortened
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212
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214
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Experiences With Hierarchy-Based Co
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Sub View Child DataField 0..n Ke
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Figure 8 - Actual State Charts elem
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associations, which may result in r
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M3PS: A Multi-Platform P2P System B
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In following, we will explain in de
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Figure 10. JDP in Windows XP. Figur
Page 237 and 238:
Mapping Clouds of SOA- and Business
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the technical SOA events (from the
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component and the business process
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Figure 13. “Business Value of Dat
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Solaris of SUN. This platform provi
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status change of an application is
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coming up, is presently discussing
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ISBN: 3-939352-05-5 ISBN: 978-3-939
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4th International Conference on Principles and Practices ... - MADOC

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