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.
Related
I'm able to successfully build the Maven assembly plugin in my project and generate a jar file with all the needed dependencies. But now I also want to instruct Maven after building me the jar file with dependencies, go into the target folder where the jar file with dependencies is located and run my main program.
Should I consider looking into the Maven Exec Plugin for what I want to acheive?
Yes the exec-maven-plugin is the right choice. The question is if you like to start the assembled jar archive or just a java class with it's dependencies.
I want to open Nutch 2.1 source file (http://www.eu.apache.org/dist/nutch/2.1/) at Intellij IDEA. Here is an explanation of how to open it at Eclipse: http://wiki.apache.org/nutch/RunNutchInEclipse
However I am not familiar with Ant (I use Maven) and when I open that source file many classes are not known by Intellij.
i.e.:
org.apache.hadoop.mapreduce.JobContext
org.apache.gora.mapreduce.GoraMapper
How can I add them to library or what should I do?
I finally figure out how to do it. Now our team can dev nutch in IntellIJ
The process we do
Get nutch source from apache.org
wget http://www.eu.apache.org/dist/nutch/2.3/apache-nutch-2.3-src.tar.gz
Import nutch source in intellij
Get Dependencies by Ant
Run ant runtime
Run ant test
Import dependencies into Intellij
File > Project Structures
Library > Ivy
Click to Plus button
Select all libraries in apache-nutch-2.3/build/lib
Now we have a project with nutch source and all dependencies
I think, you should use ant build for nutch project. Because, pom.xml is problematical for nutch. If you want to use it anyway maven, you check maven dependency in pom.xml .
I think, the problem can be solved with the following:
You create new project via idea and add nutch source. Idea is not
supported ivy ant project. You can install ivy plugin for idea, I
suppose, Idea12 does not support it.
or
You can create ant project for nutch via eclipse and then save
project. Then open the project on idea via eclipse classpath.
or
You can configure classpath. If you use ant build, you should add jars : File->ProjectStructure as follows:
Create a library
Attach Files
Then, if you use ant build, select jars from NUTCH_HOME/build/lib/* after build.
If you use maven build, select jars from ~/.m2/* (MAVEN_REPO)
Although Intellij supports running ant scripts directly through the IDE via the ant plugin, the Intellij editor will not figure out the classpath using your build.xml file by itself.This will result in the editor showing the code littered with errors.
Unfortunately the only solution I found to this is to add all the jars manually.You can get all the jars needed by building the ant project using the ant jar command.
So these are the steps you need to follow :->
1.Run ant jar command in the root of your program
2.Copy all the jars created inside the build folder(they will not be directly inside build folder.I had to go from build->ivy->lib->{project name})
3.Paste these jars to a new folder created somewhere outside the directory
4.Go to File->Project Structure->Libraries. Press the + button.
5.Select all the copied jars and press ok to any prompts which appear.
6.Press finish and wait for indexing to complete.Any dependency errors in the editor should resolve now.
Note: Since you are manually adding jars, you would need to keep them in sync if you change your build.xml file for any dependency change.
It seems that dependencies are managed using Ivy (see the ivy folder in the sources archives), so you could try to install the Ivy plugin, which would allow you to fix your classpath issues.
I have several very big ant build.xml files.
Someone know tool or program for get all dependency jar files from build.xml ?
Please check How To Check Dependencies Between Jar Files?.
http://www.jboss.org/tattletale or jdepend could help in getting dependencies between jars.
If you want to extract dependencies from a given build.xml , one option is to write XML parser and process ant file. Not an easy task. Another option will be write a listener for each build task. If the task is javac then query its classpath.
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.
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.