Re: How to do incremental build?
May be I have to rectify what i would like to ask : How to make incremental build between multi-modules. As far as I know : An incremental build reuses the results of a previous build to perform an optimized build based on the changes since the last build. With M2, don't see where optimizations are between modules When an incremental build is triggered, the builder selectively recompiles the added, changed, or otherwise affected .java files that are described in the resource delta and updates the problem markers as necessary. Any .class files or markers that are no longer appropriate are removed. Sure M2 (without clean) reuses previous build state to says : Nothing to compile - all classes are up to date or create a resource change delta if modification has been detected inside a module But it's not able to see affected files from modules which depend on modified one, as Eclipse do. Siarhei wrote: Why would you recompile a module which didn't change? Java doesn't need to re-link (is that what you think?) when dependent code has changed for as long as API stays the same (and if that is changed it wont compile of course :) Without getting in too much details - by not calling 'clean' goal your build will be incremental On 11/30/07, Saloucious [EMAIL PROTECTED] wrote: I don't think Maven will recompile modules which depends of modified one Is maven can make incremental builds ? http://www.javaworld.com/javaforums/showflat.php?Cat=0Number=32334Main=32334 http://www.javaworld.com/javaforums/showflat.php?Cat=0Number=32334Main=32334 Andrew Boyer wrote: Incremental builds can be done by not calling the clean target. In continuum, I believe the default targets are 'clean install'. If you change that to just 'install', you'll be doing incrementals. I haven't tried this, but it should work, since continuum maintains one working directory per project, and re-uses that working directory each time it does a build. Andrew -Original Message- From: I am Who i am [mailto:[EMAIL PROTECTED] Sent: Wednesday, October 10, 2007 2:46 PM To: users@maven.apache.org Subject: How to do incremental build? Hi All How do i enable incremental build with maven2 and continuum? - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] -- View this message in context: http://www.nabble.com/How-to-do-incremental-build--tf4602698s177.html#a14087762 Sent from the Maven - Users mailing list archive at Nabble.com. - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] -- View this message in context: http://www.nabble.com/How-to-do-incremental-build--tf4602698s177.html#a14127262 Sent from the Maven - Users mailing list archive at Nabble.com. - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: How to do incremental build?
On Dec 3, 2007 10:24 AM, Saloucious [EMAIL PROTECTED] wrote: But it's not able to see affected files from modules which depend on modified one, as Eclipse do. Eclipse gets this by scanning the java files to identify dependencies (for code complete, etc) and when it does it's background compilation. Essentially, Eclipse has done a lot of work in the background and built a dependency tree for each class. It would most likely take Maven just as long to figure out the dependencies as to do a clean compile unless maven were to persist the results of a dependency analysis into the target folder... Of course that would make the normal compiles slower... If you are running a CI server in the background (http://hudson.dev.java.net/ anyone?) then the compile time is less of an issue for Maven builds. If you are looking to take the changes quickly while developing, your IDE will have recompiled the necessary files anyway, so what is the problem with Maven's method of compiling only newer .java files... there should be none of them as your IDE will have compiled them, all you are using Maven for in that case is the packaging of artifacts (which your IDE will do for you anyway... and you're only doing a Maven build as a pre-test to commiting your changes... oh so in that case you _should_ be doing a clean install not an incremental) Just my €0.02 -Stephen - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: How to do incremental build?
I agree, When I started using maven with multi-module projects, intuively when doing mvn package in a module I was supposing that local changes of other modules will be used to test the local changes of the tested module. A possible solution that I can see would be to have an mvn parameter to trigger a classpath of the local modules, instead of the repository ones. for example (the name is just an example): $ mvn --help -lc --local-classpath Use local classpath instead of repository. if there is the following module structure: /pom.xml (root pom) /moduleA/pom.xml (changed module) /moduleB/pom.xml (changed module) /moduleC/pom.xml (unchanged module) the following command: /moduleA/$ mvn test should be testing moduleA with the last installed moduleB and moduleC. and the following command /moduleA/$ mvn -lc test should be testing moduleA with a classpath similar to src/main/test:src/main/java:../moduleA/src/main/test/: I'd like some comments about if this is possible/desirable or not. Saloucious wrote: May be I have to rectify what i would like to ask : How to make incremental build between multi-modules. As far as I know : An incremental build reuses the results of a previous build to perform an optimized build based on the changes since the last build. With M2, don't see where optimizations are between modules When an incremental build is triggered, the builder selectively recompiles the added, changed, or otherwise affected .java files that are described in the resource delta and updates the problem markers as necessary. Any .class files or markers that are no longer appropriate are removed. Sure M2 (without clean) reuses previous build state to says : Nothing to compile - all classes are up to date or create a resource change delta if modification has been detected inside a module But it's not able to see affected files from modules which depend on modified one, as Eclipse do. Siarhei wrote: Why would you recompile a module which didn't change? Java doesn't need to re-link (is that what you think?) when dependent code has changed for as long as API stays the same (and if that is changed it wont compile of course :) Without getting in too much details - by not calling 'clean' goal your build will be incremental On 11/30/07, Saloucious [EMAIL PROTECTED] wrote: I don't think Maven will recompile modules which depends of modified one Is maven can make incremental builds ? http://www.javaworld.com/javaforums/showflat.php?Cat=0Number=32334Main=32334 http://www.javaworld.com/javaforums/showflat.php?Cat=0Number=32334Main=32334 Andrew Boyer wrote: Incremental builds can be done by not calling the clean target. In continuum, I believe the default targets are 'clean install'. If you change that to just 'install', you'll be doing incrementals. I haven't tried this, but it should work, since continuum maintains one working directory per project, and re-uses that working directory each time it does a build. Andrew -Original Message- From: I am Who i am [mailto:[EMAIL PROTECTED] Sent: Wednesday, October 10, 2007 2:46 PM To: users@maven.apache.org Subject: How to do incremental build? Hi All How do i enable incremental build with maven2 and continuum? - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] -- View this message in context: http://www.nabble.com/How-to-do-incremental-build--tf4602698s177.html#a14087762 Sent from the Maven - Users mailing list archive at Nabble.com. - 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: How to do incremental build?
This is an idea that JBoss and myself, personally, have brought up with the Maven team quite a few times. The terms we use is that of a binary (repo) dependency versus a source (module) dependency. Another name for 'source dependency' might be 'local dependency'. Whatever its term, I personally really see benefit in this when a project is modularized as an implement detail as opposed to any desire to have seperate release cycles to the modules. For example, in the mavenization of Hibernate I chose to break out modules to better isolate dependencies. I have no intention that the modules be versioned separately, or really even developed separately. When I make a change in module, I want modules which depend in it to see that change just like when I operate within IntelliJ (and probably all other IDEs, I would assume). On Monday 03 December 2007 05:09:48 am Dimitris Kapanidis wrote: I agree, When I started using maven with multi-module projects, intuively when doing mvn package in a module I was supposing that local changes of other modules will be used to test the local changes of the tested module. A possible solution that I can see would be to have an mvn parameter to trigger a classpath of the local modules, instead of the repository ones. for example (the name is just an example): $ mvn --help -lc --local-classpath Use local classpath instead of repository. if there is the following module structure: /pom.xml (root pom) /moduleA/pom.xml (changed module) /moduleB/pom.xml (changed module) /moduleC/pom.xml (unchanged module) the following command: /moduleA/$ mvn test should be testing moduleA with the last installed moduleB and moduleC. and the following command /moduleA/$ mvn -lc test should be testing moduleA with a classpath similar to src/main/test:src/main/java:../moduleA/src/main/test/: I'd like some comments about if this is possible/desirable or not. -- Steve Ebersole Hibernate Project Lead http://hibernate.org Principal Software Engineer http://redhat.com http://jboss.org - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: How to do incremental build?
I don't think Maven will recompile modules which depends of modified one Is maven can make incremental builds ? http://www.javaworld.com/javaforums/showflat.php?Cat=0Number=32334Main=32334 http://www.javaworld.com/javaforums/showflat.php?Cat=0Number=32334Main=32334 Andrew Boyer wrote: Incremental builds can be done by not calling the clean target. In continuum, I believe the default targets are 'clean install'. If you change that to just 'install', you'll be doing incrementals. I haven't tried this, but it should work, since continuum maintains one working directory per project, and re-uses that working directory each time it does a build. Andrew -Original Message- From: I am Who i am [mailto:[EMAIL PROTECTED] Sent: Wednesday, October 10, 2007 2:46 PM To: users@maven.apache.org Subject: How to do incremental build? Hi All How do i enable incremental build with maven2 and continuum? - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] -- View this message in context: http://www.nabble.com/How-to-do-incremental-build--tf4602698s177.html#a14087762 Sent from the Maven - Users mailing list archive at Nabble.com. - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: How to do incremental build?
What about the war (that didn't change) that depends on (and bundles) the jar (that did)? TK On Nov 30, 2007, at 12:20 PM, Siarhei Dudzin wrote: Why would you recompile a module which didn't change? Java doesn't need to re-link (is that what you think?) when dependent code has changed for as long as API stays the same (and if that is changed it wont compile of course :) Without getting in too much details - by not calling 'clean' goal your build will be incremental On 11/30/07, Saloucious [EMAIL PROTECTED] wrote: I don't think Maven will recompile modules which depends of modified one Is maven can make incremental builds ? http://www.javaworld.com/javaforums/showflat.php?Cat=0Number=32334Main=32334 http://www.javaworld.com/javaforums/showflat.php?Cat=0Number=32334Main=32334 Andrew Boyer wrote: Incremental builds can be done by not calling the clean target. In continuum, I believe the default targets are 'clean install'. If you change that to just 'install', you'll be doing incrementals. I haven't tried this, but it should work, since continuum maintains one working directory per project, and re-uses that working directory each time it does a build. Andrew -Original Message- From: I am Who i am [mailto:[EMAIL PROTECTED] Sent: Wednesday, October 10, 2007 2:46 PM To: users@maven.apache.org Subject: How to do incremental build? Hi All How do i enable incremental build with maven2 and continuum? - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] -- View this message in context: http://www.nabble.com/How-to-do-incremental-build--tf4602698s177.html#a14087762 Sent from the Maven - Users mailing list archive at Nabble.com. - 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: How to do incremental build?
Why would you recompile a module which didn't change? Java doesn't need to re-link (is that what you think?) when dependent code has changed for as long as API stays the same (and if that is changed it wont compile of course :) Without getting in too much details - by not calling 'clean' goal your build will be incremental On 11/30/07, Saloucious [EMAIL PROTECTED] wrote: I don't think Maven will recompile modules which depends of modified one Is maven can make incremental builds ? http://www.javaworld.com/javaforums/showflat.php?Cat=0Number=32334Main=32334 http://www.javaworld.com/javaforums/showflat.php?Cat=0Number=32334Main=32334 Andrew Boyer wrote: Incremental builds can be done by not calling the clean target. In continuum, I believe the default targets are 'clean install'. If you change that to just 'install', you'll be doing incrementals. I haven't tried this, but it should work, since continuum maintains one working directory per project, and re-uses that working directory each time it does a build. Andrew -Original Message- From: I am Who i am [mailto:[EMAIL PROTECTED] Sent: Wednesday, October 10, 2007 2:46 PM To: users@maven.apache.org Subject: How to do incremental build? Hi All How do i enable incremental build with maven2 and continuum? - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] -- View this message in context: http://www.nabble.com/How-to-do-incremental-build--tf4602698s177.html#a14087762 Sent from the Maven - Users mailing list archive at Nabble.com. - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: How to do incremental build?
The war will be re-packaged with the new jar for as long as you run the build form a parent module which would make sure that your new and changed jar gets to your local repository which then gets picked up by the war module. Note there is a difference between packaging and compiling as those are also different phases of the build lifecycle. On 11/30/07, [EMAIL PROTECTED] [EMAIL PROTECTED] wrote: What about the war (that didn't change) that depends on (and bundles) the jar (that did)? TK On Nov 30, 2007, at 12:20 PM, Siarhei Dudzin wrote: Why would you recompile a module which didn't change? Java doesn't need to re-link (is that what you think?) when dependent code has changed for as long as API stays the same (and if that is changed it wont compile of course :) Without getting in too much details - by not calling 'clean' goal your build will be incremental On 11/30/07, Saloucious [EMAIL PROTECTED] wrote: I don't think Maven will recompile modules which depends of modified one Is maven can make incremental builds ? http://www.javaworld.com/javaforums/showflat.php?Cat=0Number=32334Main=32334 http://www.javaworld.com/javaforums/showflat.php?Cat=0Number=32334Main=32334 Andrew Boyer wrote: Incremental builds can be done by not calling the clean target. In continuum, I believe the default targets are 'clean install'. If you change that to just 'install', you'll be doing incrementals. I haven't tried this, but it should work, since continuum maintains one working directory per project, and re-uses that working directory each time it does a build. Andrew -Original Message- From: I am Who i am [mailto:[EMAIL PROTECTED] Sent: Wednesday, October 10, 2007 2:46 PM To: users@maven.apache.org Subject: How to do incremental build? Hi All How do i enable incremental build with maven2 and continuum? - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] -- View this message in context: http://www.nabble.com/How-to-do-incremental-build--tf4602698s177.html#a14087762 Sent from the Maven - Users mailing list archive at Nabble.com. - 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]
How to do incremental build?
Hi All How do i enable incremental build with maven2 and continuum?
RE: How to do incremental build?
Incremental builds can be done by not calling the clean target. In continuum, I believe the default targets are 'clean install'. If you change that to just 'install', you'll be doing incrementals. I haven't tried this, but it should work, since continuum maintains one working directory per project, and re-uses that working directory each time it does a build. Andrew -Original Message- From: I am Who i am [mailto:[EMAIL PROTECTED] Sent: Wednesday, October 10, 2007 2:46 PM To: users@maven.apache.org Subject: How to do incremental build? Hi All How do i enable incremental build with maven2 and continuum? - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
