I know that, we can very well use ANT and Maven together to build the project.We can run ANT scripts through Maven's POM.xml. But my question is can we run pom.xml through ANT's build.xml ?
i.e. can we create maven build from build.xml
Yes, using maven ant tasks.
The page lists out multiple maven tasks which can be integrated into an ant build script, thus combining the features of both. To take an example, there is the mvn task, which as documented can do a full maven build from ant.
<artifact:mvn mavenHome="/path/to/maven-3.0.x">
<arg value="install"/>
</artifact:mvn>
Besides this, there are
Dependencies task
Install and Deploy tasks
Pom task
each described with examples.
Maven and ANT are very different build tools. In ANT you write all the logic yourself, whereas a standard build process is "baked in" with Maven.
The POM file contains no logic, instead it contains a series of declarations about your project.
If you understand well how Maven works, it is theoretically possible to take a POM and generate an ANT build that emulates the behaviour of the Maven build. I'm not aware of any solution which can easily convert in the other direction, mainly because ANT is missing Maven functionality, such as dependency management.
Instead of trying to convert an ANT build into Maven, I'd recommend that you keep your existing build logic and delegate the management of your classpath to the ivy or Maven ANT tasks. These tools also provide tasks to publish your build output to a Maven repository, enabling your project to share with other projects using Maven.
Finally, I'm an ivy advocate and wrote an ant2ivy script which can assist in upgrade process. It creates an initial set of configuration files for downloading your projects dependencies from the Maven central repository.
Related
I have an ant project with ivy dependencies in it. Unfortunately my Intelij IDEA does not understend ivy dependencies. But ant builds project well. I want to download all dependencies to one folder and add jars explicitly to project.
How can i download all dependencies automatically?
As described here http://ant.apache.org/ivy/history/latest-milestone/ant.html
During ant build ivy dependencies downloads to "cache". If i'll found this cache path i can took jars from there.
Look at what ant is doing. If its a well written ant script you'll find (do an ant -p -v) targets specifically for retrieving the ivy dependencies. Also you may inspect the build.xml and watch out for retrieve tasks probably in the ivy namespace.
I might be missing something, but I have been struggling with this problem for some time now.
I have an Web application with Ant build script. I would like to set up an Artifact to this module, (which is the .war file, generated using ant), so that I could deploy this war file, to the configured Tomcat server.
But I am not able to figure out, how to make Intellij use my Ant script to build artifact. I see an option to Run Ant Targets, but this just runs the Ant target and Intellij then proceeds to generate Artifact, in the usual way.
Please let me know if the question is ambiguous. The problem is not Ant Integration with Intellij. I could just use the Ant window and run any target and also could make an Ant target run as part of Build. The problem is to associate an Artifact to a module and leverage the Ant script to build that artifact. I need this to enable, tight tomcat integration, Since while integrating the Tomcat server, I can specify an artifact to be deployed.
Note: Intellij IDEA version 11.1
IDEA can either deploy Artifact or the External Source (directory or file) that is built by Ant or any other tool:
It's not possible to associate IDEA Artifact with Ant build.
Using Maven Ant Tasks, I see lots of examples that build Ant classpath from Maven dependencies, but what about the other way round?
I have a carefully tuned Ant project that builds the Java task classpath from all the jars in my lib directory. How can I use Maven-Ant-tasks to use my classpath to build Maven dependencies?
I would rather not do each jar file individually (my last resort).
Is there a better way?
If you're working on converting from Ant to Maven, just bite the bullet and write out your <dependencies> section to match your ant classpath. You only have to do it once, and you'll thank yourself many times over.
What approach has worked well for you combining IVY + msbuild?
Our goal is to integrate IVY into the C#/C++ build process for dependency resolution and publishing. We have tried adding it to custom tasks at the beginning and end of the build and we have tried wrapping the msbuild calls with ant+ apache-ant-dotnet.
Other options might be gradle, buildr, rake.
What do you use?
Thanks
Peter
Most build technologies can use libraries found in a local directory. I'd suggest using the command-line ivy program to populate this, at the start of your build:
java -jar ivy.jar -ivy ivy.xml -settings ivysettings.xml -retrieve "lib/[conf]/[artifact].[ext]"
Your dependencies are listed in a standard ivy file called ivy.xml. The protocol, location and layout of your remote repository is described in ivysettings.xml
The advantage of this approach (as opposed to switching to Gradle, etc) is that you're not trying to replace your existing build tool. Ivy is solely concerned with managing dependencies.
My team has been using Ivy for .NET for a couple of years very successfully. I know several more that give it a vote of confidence.
Use it standalone. Wrap calls into msbuild tasks. No need to use Ant integration.
I have a Java project that is dependent on other Java projects that are siblings and there is a chain of dependencies. Each individual project has a build script written in Ant. For clarity find below a sample of the same.
EARProject depends on WebProject and EJBProject: The war file that is generated by the WebProject build and jar file that is generated by the EJBProject are needed to build the EARProject.
WebProject depends on ComponentOneProject: The jar file that is generated by the ComponentOneProject build is needed to build WebProject.
EJBProject depends on ComponentTwoProject: The jar file that is generated by the ComponentTwoProject build is needed to build EJBProject.
So, when I build the EARProject build, if the dependent war and jar have not been built yet, then it should kick-off the WebProject build and EJBProject build and if the ComponentOneProject is yet to be built, the build of ComponentOneProject needs to be kicked-off and so on.
Can someone suggest a clean method by which we can accomplish this?
Facing the same problem we at our company wrote a custom Groovy script that explores the full dependency tree ant generates the Ant build scripts based on all the .project, .classpath, .settings/* files. This wasn't as difficult as it might seem as first. This way we can build our products without (My)Eclipse on a clean CVS+JDK+Groovy virtual machine. Hope it helps..