Re: Source code analyzer for unused method detection?
I would support this request, which, if I understand well, hasn't been answered yet. It is clear that many extra things will be caught (e.g. servlet's doGet) by such a report but this is not really a problem and such a tool should support being configured to avoid declaring it as unused. It would help us, at least. Paul On Dimanche, octo 5, 2003, at 23:34 Europe/Paris, Tim Anderson wrote: ...which is why having the facility included in the build reports would make it so useful - cf. checkstyle, pmd etc. -Original Message- From: David Zeleznik [mailto:[EMAIL PROTECTED] Sent: Monday, 6 October 2003 7:26 AM To: Maven Users List; [EMAIL PROTECTED] Subject: RE: Source code analyzer for unused method detection? This is a standard feature of most code obfuscators that operate at the bytecode level, not on the source code. In particular, we use DashO to do exactly this (in addition to other munging). However, as others have stated, in the face of instrospection, reflection, dynamic proxies, etc. you cannot expect a completely automated solution. Determining an accurate list of unused non-public methods in a large software system is not something to tackle casually and will require a serious investment in developer effort. In addition, any future changes to the code will require a fresh analysis effort. -- David Zeleznik Principal Architect ILOG - Changing the rules of business mailto:[EMAIL PROTECTED] http://www.ilog.com -- -Original Message- From: Tim Anderson [mailto:[EMAIL PROTECTED] Sent: Sunday, October 05, 2003 1:48 AM To: Maven Users List Subject: Source code analyzer for unused method detection? Hi, does anyone know of a code analyzer which can detect unused methods? The PMD plugin only reports on unused private methods - I'm looking for one which can also do public or protected methods. Thanks, Tim - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Source code analyzer for unused method detection?
Siegfried Goeschl wrote: Oops, considering dynamic class loading and reflection it is actually impossible ... Cheers, Siegfried Goeschl I can second that--but I can go one further. Due to the type of design and true separation of implementation/interface with Avalon style components, each component appears to be completely separate. So, while we might be able to tell if an interface method is called, it will almost always be by something that no tool can directly trace. The only way to tell in systems like that is to perform a certain type of profiling. There are three types of profiling, and most people are only familiar with performance profiling. The other types are memory profiling and coverage profiling. Profiling requires that the application be run through a JVM with profiling extensions added, and output the results of the run to some output file (unless you have a commercial tool that give you a GUI at runtime). The normal extensions included with the sun JVM will allow you to examine the garbage collection and performance aspects, but memory fails me if it can do coverage testing. Adding an extension requires some C/C++ development, which is platform dependant. However, you will even be able to test for orphan private methods. - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Source code analyzer for unused method detection?
Nooo... I think users of such a tool would accept to write by hand the methods that should be considered as entry-points to the package! Paul On Lundi, octo 6, 2003, at 14:48 Europe/Paris, Berin Loritsch wrote: Siegfried Goeschl wrote: Oops, considering dynamic class loading and reflection it is actually impossible ... Cheers, Siegfried Goeschl I can second that--but I can go one further. Due to the type of design and true separation of implementation/interface with Avalon style components, each component appears to be completely separate. So, while we might be able to tell if an interface method is called, it will almost always be by something that no tool can directly trace. The only way to tell in systems like that is to perform a certain type of profiling. There are three types of profiling, and most people are only familiar with performance profiling. The other types are memory profiling and coverage profiling. Profiling requires that the application be run through a JVM with profiling extensions added, and output the results of the run to some output file (unless you have a commercial tool that give you a GUI at runtime). The normal extensions included with the sun JVM will allow you to examine the garbage collection and performance aspects, but memory fails me if it can do coverage testing. Adding an extension requires some C/C++ development, which is platform dependant. However, you will even be able to test for orphan private methods. - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Source code analyzer for unused method detection?
Paul Libbrecht wrote: Nooo... I think users of such a tool would accept to write by hand the methods that should be considered as entry-points to the package! I am not advocating that this project build such an animal. All I am saying is that when you have every piece as truly isolated as possible, you can't authoritatively tell what is used and not used unless you run it in the application. You can manually define certain interfaces to be the entry-points for a set of components, but what if one of the methods on the interface is never called once in the system? There is no ideal solution. - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: Source code analyzer for unused method detection?
We use Clover (and there is a plugin for it last time I checked) which gives you a bunch of statistics (method completion, statement completion, and conditional completion) on code coverage in your source directory. These statistics are bsed on your unit test coverage. -Original Message- From: Tim Anderson To: Maven Users List Sent: 10/5/2003 5:04 AM Subject: RE: Source code analyzer for unused method detection? The results wouldn't be all that meaningful on reusable components, but at the application level, it would be useful to detect cruft. -Tim -Original Message- From: Vincent Massol [mailto:[EMAIL PROTECTED] Sent: Sunday, 5 October 2003 6:09 PM To: 'Maven Users List' Subject: RE: Source code analyzer for unused method detection? Hi Tim, How do you know a public method is not used by external code? -Vincent -Original Message- From: Tim Anderson [mailto:[EMAIL PROTECTED] Sent: 05 October 2003 07:48 To: Maven Users List Subject: Source code analyzer for unused method detection? Hi, does anyone know of a code analyzer which can detect unused methods? The PMD plugin only reports on unused private methods - I'm looking for one which can also do public or protected methods. Thanks, Tim - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: Source code analyzer for unused method detection?
Clover actually reports on all method/statement/conditional level usage in your code. You first have to instrument your code and all that means is running your source through the Clover filter which adds clover java lines after every statement in your class. Then when you run your units against that instrumented code a small clover database is updated with statistics on which statements were hit. I think it's a great product and raises the quality of my unit tests. -Original Message- From: Siegfried Goeschl To: Maven Users List Sent: 10/5/2003 8:42 AM Subject: Re: Source code analyzer for unused method detection? Oops, considering dynamic class loading and reflection it is actually impossible ... Cheers, Siegfried Goeschl On Sunday 05 October 2003 17:27, Siegfried Goeschl wrote: It is actually not easy to detect an unused method due inheritance and polymorphism since the class of the instance you use is determined at runtime. If you have some time to spend you can either search the web (there are many static source code analyzers out there and tell us your findings!!) or use a code profiler such as CLOVER or JProbe . Cheers, Siegfried Goeschl On Sunday 05 October 2003 14:04, Tim Anderson wrote: The results wouldn't be all that meaningful on reusable components, but at the application level, it would be useful to detect cruft. -Tim -Original Message- From: Vincent Massol [mailto:[EMAIL PROTECTED] Sent: Sunday, 5 October 2003 6:09 PM To: 'Maven Users List' Subject: RE: Source code analyzer for unused method detection? Hi Tim, How do you know a public method is not used by external code? -Vincent -Original Message- From: Tim Anderson [mailto:[EMAIL PROTECTED] Sent: 05 October 2003 07:48 To: Maven Users List Subject: Source code analyzer for unused method detection? Hi, does anyone know of a code analyzer which can detect unused methods? The PMD plugin only reports on unused private methods - I'm looking for one which can also do public or protected methods. Thanks, Tim - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Source code analyzer for unused method detection?
Berin Loritsch wrote: Paul Libbrecht wrote: Nooo... I think users of such a tool would accept to write by hand the methods that should be considered as entry-points to the package! I am not advocating that this project build such an animal. All I am saying is that when you have every piece as truly isolated as possible, you can't authoritatively tell what is used and not used unless you run it in the application. You can manually define certain interfaces to be the entry-points for a set of components, but what if one of the methods on the interface is never called once in the system? There is no ideal solution. Well, if you're developing a component, you choose to make it public or not... it's about the same choice... Paul - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: Source code analyzer for unused method detection?
Hi Tim, How do you know a public method is not used by external code? -Vincent -Original Message- From: Tim Anderson [mailto:[EMAIL PROTECTED] Sent: 05 October 2003 07:48 To: Maven Users List Subject: Source code analyzer for unused method detection? Hi, does anyone know of a code analyzer which can detect unused methods? The PMD plugin only reports on unused private methods - I'm looking for one which can also do public or protected methods. Thanks, Tim - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: Source code analyzer for unused method detection?
The results wouldn't be all that meaningful on reusable components, but at the application level, it would be useful to detect cruft. -Tim -Original Message- From: Vincent Massol [mailto:[EMAIL PROTECTED] Sent: Sunday, 5 October 2003 6:09 PM To: 'Maven Users List' Subject: RE: Source code analyzer for unused method detection? Hi Tim, How do you know a public method is not used by external code? -Vincent -Original Message- From: Tim Anderson [mailto:[EMAIL PROTECTED] Sent: 05 October 2003 07:48 To: Maven Users List Subject: Source code analyzer for unused method detection? Hi, does anyone know of a code analyzer which can detect unused methods? The PMD plugin only reports on unused private methods - I'm looking for one which can also do public or protected methods. Thanks, Tim - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Source code analyzer for unused method detection?
It is actually not easy to detect an unused method due inheritance and polymorphism since the class of the instance you use is determined at runtime. If you have some time to spend you can either search the web (there are many static source code analyzers out there and tell us your findings!!) or use a code profiler such as CLOVER or JProbe . Cheers, Siegfried Goeschl On Sunday 05 October 2003 14:04, Tim Anderson wrote: The results wouldn't be all that meaningful on reusable components, but at the application level, it would be useful to detect cruft. -Tim -Original Message- From: Vincent Massol [mailto:[EMAIL PROTECTED] Sent: Sunday, 5 October 2003 6:09 PM To: 'Maven Users List' Subject: RE: Source code analyzer for unused method detection? Hi Tim, How do you know a public method is not used by external code? -Vincent -Original Message- From: Tim Anderson [mailto:[EMAIL PROTECTED] Sent: 05 October 2003 07:48 To: Maven Users List Subject: Source code analyzer for unused method detection? Hi, does anyone know of a code analyzer which can detect unused methods? The PMD plugin only reports on unused private methods - I'm looking for one which can also do public or protected methods. Thanks, Tim - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Source code analyzer for unused method detection?
Oops, considering dynamic class loading and reflection it is actually impossible ... Cheers, Siegfried Goeschl On Sunday 05 October 2003 17:27, Siegfried Goeschl wrote: It is actually not easy to detect an unused method due inheritance and polymorphism since the class of the instance you use is determined at runtime. If you have some time to spend you can either search the web (there are many static source code analyzers out there and tell us your findings!!) or use a code profiler such as CLOVER or JProbe . Cheers, Siegfried Goeschl On Sunday 05 October 2003 14:04, Tim Anderson wrote: The results wouldn't be all that meaningful on reusable components, but at the application level, it would be useful to detect cruft. -Tim -Original Message- From: Vincent Massol [mailto:[EMAIL PROTECTED] Sent: Sunday, 5 October 2003 6:09 PM To: 'Maven Users List' Subject: RE: Source code analyzer for unused method detection? Hi Tim, How do you know a public method is not used by external code? -Vincent -Original Message- From: Tim Anderson [mailto:[EMAIL PROTECTED] Sent: 05 October 2003 07:48 To: Maven Users List Subject: Source code analyzer for unused method detection? Hi, does anyone know of a code analyzer which can detect unused methods? The PMD plugin only reports on unused private methods - I'm looking for one which can also do public or protected methods. Thanks, Tim - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: Source code analyzer for unused method detection?
Not impossible, just imperfect. Several byte code obfuscators provide the facility to remove unused methods from jars - presumably they face the same issues. -Tim -Original Message- From: Siegfried Goeschl [mailto:[EMAIL PROTECTED] Sent: Monday, 6 October 2003 1:43 AM To: Maven Users List Subject: Re: Source code analyzer for unused method detection? Oops, considering dynamic class loading and reflection it is actually impossible ... Cheers, Siegfried Goeschl On Sunday 05 October 2003 17:27, Siegfried Goeschl wrote: It is actually not easy to detect an unused method due inheritance and polymorphism since the class of the instance you use is determined at runtime. If you have some time to spend you can either search the web (there are many static source code analyzers out there and tell us your findings!!) or use a code profiler such as CLOVER or JProbe . Cheers, Siegfried Goeschl On Sunday 05 October 2003 14:04, Tim Anderson wrote: The results wouldn't be all that meaningful on reusable components, but at the application level, it would be useful to detect cruft. -Tim -Original Message- From: Vincent Massol [mailto:[EMAIL PROTECTED] Sent: Sunday, 5 October 2003 6:09 PM To: 'Maven Users List' Subject: RE: Source code analyzer for unused method detection? Hi Tim, How do you know a public method is not used by external code? -Vincent -Original Message- From: Tim Anderson [mailto:[EMAIL PROTECTED] Sent: 05 October 2003 07:48 To: Maven Users List Subject: Source code analyzer for unused method detection? Hi, does anyone know of a code analyzer which can detect unused methods? The PMD plugin only reports on unused private methods - I'm looking for one which can also do public or protected methods. Thanks, Tim - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: Source code analyzer for unused method detection?
This is a standard feature of most code obfuscators that operate at the bytecode level, not on the source code. In particular, we use DashO to do exactly this (in addition to other munging). However, as others have stated, in the face of instrospection, reflection, dynamic proxies, etc. you cannot expect a completely automated solution. Determining an accurate list of unused non-public methods in a large software system is not something to tackle casually and will require a serious investment in developer effort. In addition, any future changes to the code will require a fresh analysis effort. -- David Zeleznik Principal Architect ILOG - Changing the rules of business mailto:[EMAIL PROTECTED] http://www.ilog.com -- -Original Message- From: Tim Anderson [mailto:[EMAIL PROTECTED] Sent: Sunday, October 05, 2003 1:48 AM To: Maven Users List Subject: Source code analyzer for unused method detection? Hi, does anyone know of a code analyzer which can detect unused methods? The PMD plugin only reports on unused private methods - I'm looking for one which can also do public or protected methods. Thanks, Tim - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: Source code analyzer for unused method detection?
...which is why having the facility included in the build reports would make it so useful - cf. checkstyle, pmd etc. -Original Message- From: David Zeleznik [mailto:[EMAIL PROTECTED] Sent: Monday, 6 October 2003 7:26 AM To: Maven Users List; [EMAIL PROTECTED] Subject: RE: Source code analyzer for unused method detection? This is a standard feature of most code obfuscators that operate at the bytecode level, not on the source code. In particular, we use DashO to do exactly this (in addition to other munging). However, as others have stated, in the face of instrospection, reflection, dynamic proxies, etc. you cannot expect a completely automated solution. Determining an accurate list of unused non-public methods in a large software system is not something to tackle casually and will require a serious investment in developer effort. In addition, any future changes to the code will require a fresh analysis effort. -- David Zeleznik Principal Architect ILOG - Changing the rules of business mailto:[EMAIL PROTECTED] http://www.ilog.com -- -Original Message- From: Tim Anderson [mailto:[EMAIL PROTECTED] Sent: Sunday, October 05, 2003 1:48 AM To: Maven Users List Subject: Source code analyzer for unused method detection? Hi, does anyone know of a code analyzer which can detect unused methods? The PMD plugin only reports on unused private methods - I'm looking for one which can also do public or protected methods. Thanks, Tim - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Source code analyzer for unused method detection?
On Sun, 5 Oct 2003, Tim Anderson wrote: does anyone know of a code analyzer which can detect unused methods? The PMD plugin only reports on unused private methods - I'm looking for one which can also do public or protected methods. IBM's JAX product did this, but it has been folded into WebSphere and I can no longer google a downloadable version. It used to be available from IBM DeveloperWorks. -- Jim Dixon [EMAIL PROTECTED] tel +44 117 982 0786 mobile +44 797 373 7881 - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Source code analyzer for unused method detection?
Hi, does anyone know of a code analyzer which can detect unused methods? The PMD plugin only reports on unused private methods - I'm looking for one which can also do public or protected methods. Thanks, Tim - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
