On 2009-09-27, at 1:40 PM, Roland Asmann wrote:
On 2009-09-27, at 6:59 AM, Nayan Hajratwala wrote:
if you're using the m2eclipse plugin, building project b will force
a build of project a... but all the jar files will be installed into
and resolved from your local maven repository (~/.m2/repository),
not the target directory.
The JARs will not be resolved from the local repository by default if
you are using M2Eclipse. They are resolved from the workspace which
is
one of the primary reasons for using M2Eclipse: the live management
of
your dependencies and being able to work with them as you would
expect
in Eclipse. It's when you use the maven-eclipse-plugin that you get
this un-live connection to the local repository which is an extremely
inefficient way to work.
I disagree. I've been using the maven-eclipse-plugin ever since we
started
working with Maven and I have yet to be disappointed by it. A
colleague
wrote a rather nice tutorial on how to set up your workspace for using
Maven and the maven-eclipse-plugin.
(http://maven.apache.org/plugins/maven-eclipse-plugin/examples/multi-module-projects.html
)
You are free to work however you like. I'll qualify what I said by
saying that from what I've observed having real workspace resolution
make developers more efficient then having to use the local repository
as a mediator. If you want to use the maven-eclipse-plugin and that
fits your development workflow that's cool. It's just not going to
work with M2Eclipse because we just have too many support issues an
there are no developers who work on both sides to create parity.
To be honest though, I haven't looked at m2eclipse in quite some time
(think years, not months), so it might be better than the
maven-eclipse-plugin by now. But as long as thinks work for me, I
don' t
think I would switch.
You are free to use whatever you like. We just can support
interoperability indefinitely so with the 1.0 of M2Eclipse mixed use
of the maven-eclipse-plugin and M2Eclipse will not be supported.
From the M2Eclipse side we are soon just going to raise a huge
warning to people using the maven-eclipse-plugin basically saying we
don't support any interoperability between files generated with the
maven-eclipse-plugin and properly importing projects into Eclipse
using M2Eclipse. It's just causing too many support issues.
We are also not going to support the N:1 mapping of many Maven
projects to a single Eclipse project because that just destroys the
natural mapping of Maven to Eclipse projects. It also causes
seriously
problems because if you N Maven project where different plugins are
used in different projects we can't accurately run the lifecycle
correctly for each of those projects if you merge them all together.
In this case we have to run everything for all projects, or have to
do
some very unnatural things to preserve this mapping ourselves which
we
decided not to do. We decided to go the path of having one Eclipse
project for every Maven project and we'll correct any problems with
that model.
Now that we have M2Eclipse synced up with Maven 3.x trunk and 3.x is
compatible with 2.x this is the way forward. At least if you want to
use M2Eclipse. We are now in a position to fix problems in Maven 3.x,
turn around and absorb those changes in M2Eclipse and patch anything
wrong in M2Eclipse
Not sure why you would want the jar files in your target
directory... is there some sort of project specific reason for this?
---
Nayan Hajratwala
http://agileshrugged.com
http://twitter.com/nhajratw
734.658.6032
On Sep 25, 2009, at 6:41 PM, Piyush Gupta wrote:
I have configured Multiple project in my eclipse workspace and each
project
has its own POM.XML . I have worked with the dependencies with
single
eclipse project with multiple modules in that single project and it
works
fine when build with Maven but when working with Different projects
is there
any possibility to build the all the project with one single parent
project?
I do not want to build all the dependent project and install the
JAR in
local repository and than build the parent project I know that will
work
fine. What I want to achieve is with out building the dependent
project I
will just build the Parent Project and it will build all the
dependent
project plus all the Third party JAR's which every project is
having and put
it into the local repo and every project's respective target
directory.
The project structure in eclipse is like this
C:\eclipse\workspace
\ ProjectA
|
pom.xml
|
src.com.javasource
\ ProjectB (Child)
|
pom.xml
|
src.com.javasource
\ ProjectC
|
pom.xml
|
src.com.javasource
So when I will compile or run the command on ProjectA 's pom.xml it
should
build the ProjectB and ProjectC and create the projectb.jar and
projectc.jar
and put those jar's into the respective projects target directory.
Thanks,
Jason
----------------------------------------------------------
Jason van Zyl
Founder, Apache Maven
http://twitter.com/jvanzyl
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Thanks,
Jason
----------------------------------------------------------
Jason van Zyl
Founder, Apache Maven
http://twitter.com/jvanzyl
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