I already have a project in IntelliJ IDEA based on SBT. It works fine, compile and run. Now I want to add the Maven support as well.
How is it possible in IntelliJ IDEA having support for both build managers SBT and Maven in the same project and switch between them ?
In my experience you should have either maven or sbt enabled. Never both.
The solution:
checkout project from repository to project_sbt directory
open project in intellij as sbt project (just open project_sbt/build.sbt from disk)
checkout the same project from repository project to project_maven directory.
open project in intellij as maven project (just open project_maven/pom.xml from disk)
Disadvantages of this solution:
Changes in sbt project are not visible immediately in maven project (and vice versa)
You have to maintenance two build systems (special plugins)
Related
I have existing projects that I wrote using Eclipse Juno on another machine, on that machine I downloaded the jars I needed (selenium, jxl, sqlite etc.) from the internet manually and then edited the build path to point to them. I need to move these projects over to a different machine which has Eclipse Kepler loaded. I thought I'd use maven to link everything up (with a view to retro-fitting the machine with Juno to use maven) so that as I jump between the two machines everything will be kept in order automatically.
I installed maven from the marketplace and ran the install:install-file command, but it won't run the program as it insists the jars it's looking for aren't installed (which of course they aren't, that's what I thought maven did).
Is it not possible to use maven in this way (get it to download and link up missing jars) for an existing project? Do I need to do it manually, and if so will I have created problems that I'll have to unpick by having tried this with maven?
If you're using the m2e plugin, you can turn on Maven dependency resolution by just right-clicking on the project and choosing Configure->Convert to Maven project. Make sure your project has a valid pom.xml file and set everything up properly in Preferences->Maven (proxy, user settings, maven installation, ...)
If you're not using m2e, you can use the eclipse maven plugin like this:
mvn eclipse:eclipse
This will call the eclipse goal of the eclipse plugin, and it will generate .project and .classpath files for you with all dependencies pointing to your Maven local repository.
As a side note, the install:install-file goal doesn't have anything to do with what you want to achieve, it's used to install an artifact (a .jar file) to your local Maven repository.
If i want to convert an EAR project a maven project , do i need to add the module in the deployment assembly as maven dependency or just use the convert in m2eclipse without any further configuration.
Me personally I wouldn't attempt any kind of conversion of an existing project. I would add the poms, make sure that mvn clean install works on the command prompt and then create a new mavenized Eclipse project from the poms.
The main reason is that you current project settings are effectively wrong when you switch to Maven - the Maven poms are the truth and what feeds the Eclipse project setup, so you really do not want to make your life difficult and work against m2eclipse - let it do the project creation for you. Fresh.
You can install m2eclipse and then do the following as well.
Go to the project menu (right click on Package Explorer) > Configure > Convert to Maven Project
Open the pom.xml and right-click and choose Run As -> Maven Clean. Similarly Choose Run As -> Maven Install.
Note : Please ensure that your eclipse project settings are correct and classpath libraries are not absolute and you don't have any project specific environment variables defined in your workspace. Please take a backup of your project before you do this.This is to ensure we don't mess up the current stable project configurations. Once m2eclipse generates the pom.xml for your project, you can update and make changes to it to
fully obtain a mavenized ear build. hope this helps
You can also try creating new maven project with archetype selection of "jboss-javaee6-ear" and follow the similar structure for your project. Most probably you will need parent Pom and child poms per each module (ejb, war, jar etc). There are other few similar approach but almost all of them requires you to have mulitple POMs
maven-ear-plugin and JBoss AS 7
You can also go through all the examples for maven ear plugin to find settings suitable for you
http://maven.apache.org/plugins/maven-ear-plugin/
I ended up ditching ear for war :) single POM and even ditched the JBOss for tomcat/jetty :)
If you want to convert your existing eclipse dependencies into Maven dependencies, you can try the JBoss Tools (JBT) Maven integration feature, which contains an experimental conversion wizard, plugged into m2e's conversion process : http://docs.jboss.org/tools/whatsnew/maven/maven-news-4.0.0.Beta1.html.
So, all you have to do is, as Keerthi explained, right-click on your project and Configure > Convert to Maven...
If your dependencies already are maven artifacts, it should work easily. If not, you'll need to convert them to Maven (if they're workspace projects) or make them available in your maven enterprise repository, before converting the EAR project.
JBT (requires Eclipse JavaEE) can be installed from http://download.jboss.org/jbosstools/updates/stable/kepler/ or from the Eclipse Marketplace (See https://marketplace.eclipse.org/search/site/jboss%2520tools)
I have an existing Dynamic Web Project in Eclipse Indigo and the m2e plugin installed. In another version of my eclipse setup that I dont quite remember (my hdd crashed) I could just right click on the project -> Maven -> Enable Dependency Management.
This menu is gone for my Dynamic Web Project in my current eclipse version. Whats the way to go now? I tried right click on the project folder -> configure -> convert to maven project but that fails with errors.
M2Eclipse has migrated to an Eclipse project from Sonatype called m2e. Therefore in you Eclipse Indigo you have installed m2e whereas your old Maven projects in the older Eclipse version were created with M2Eclipse according to your right-click description. Now under normal circomstances everything should be working flawlessly and we wouldn't have this discussion. Unfortunately with the move of the project the namespace has changed from org.maven.ide.eclipse to org.eclipse.m2e.core and old Maven projects created with M2Eclipse are not immediately recognised as Maven projects in m2e. Here's a description of how to migrate your projects accordingly.
Erik, importing an existing maven project would let m2e discover and propose you to install m2e-wtp, the Maven Integration for Eclipse WTP plugin. Since you're starting from scratch, you should install m2e-wtp yourself (see https://github.com/sonatype/m2eclipse-wtp/wiki).
Now in order to quickstart a new mavenized web project, you should go to the "New Project" menu and choose new Maven project.
At this point, either you choose to create a "simple" project, in which case you need to select the "war" packaging on the following screen, or use a maven archetype, which will quickstart a new preconfigured web project, with the flavor you want (jsf, spring ...). The m2e-wtp wiki has links to help you get started.
Note : at this point Eclipse to Maven conversion is pretty much inexistant (only creates a bare pom.xml), that's why I recommend to create a maven project first. Hopefully, this should get better in the next m2e 1.1 (June 2012)
I have java maven project in Eclipse that depends from other projects and for near 1000 library jar.
But I cannot use m2eclipse at all.
For create Eclipse project is use eclipse maven plugin like:
mvn eclipse:eclipse -Dwtpversion=1.5
It works well. But when I go to Eclipse and click on m2eclipe - update dependencies - all library jars disappear!
So for work I have disabled java projects as maven in Eclipse. I suppose that there is some problem with eclipse internal variables. Does it correct? What have I check? Does exist some log? Or this is common bug of m2eclipse plugin?
Thanks.
maven eclipse plugin (i.e. mvn eclipse:eclipse) no longer works with m2eclipse or its current version, m2e.
Assuming you have the latest Eclipse (Indigo, which comes with m2e), you should have better success opening the maven project directly (Import as Maven project).
I have a maven module for validation which I must pass to a old version of Eclipse which has the Jrules API within. However there is not a maven plugin for this eclipse IDE. So I figured I would do a maven:install on the module and move over the created jar.
However when I try to import->Existing Projects into Workspace->Select archive file:
and point it to the jar no projects appear. I'm at a loss as to how I can move my maven module to the outdated eclipse, without having to grab the 101 jars required for the project and non mavenise it...
Surely their has to be an easy way to this or is maven will monolithic
Use the maven-eclipse-plugin to generate the .project and .classpath files for you:
mvn eclipse:eclipse
This will create the IDE metadata files which reference all of the JARs your project depends on from within your local maven repository folder.
Attempting to import the JAR that is built by the Maven build process into Eclipse using the " import->Existing Projects into Workspace->Select archive file" doesn't work because Eclipse expects to find a .zip/.jar file with the .project metadata files and the source code. Your compiled JAR likely contains neither.
I would recommend using the M2Eclipse maven plugin. Right click the project -> Enable Dependency Management -> Update Project Configuration
I have used eclipse:eclipse extensively and my experience is that M2Eclipse is not only better supported but works better overall.