everytime i start with a fresh new workspace, m2eclipse downloads nexus-maven-repository-index.gz from the maven central repository.
this is good.
but,
some times, i just want to start a new workspace, and not wait for it to download,
it tried copying the whole .metadata directory from an old workspace to the new one,
but the list of maven artifacts are still empty.
is there a way i can cache it?
or at least download the file once, and the copy/extract/repackage it so that m2eclipse thinks it has already downloaded it and allows me to search for maven artifacts.
or a short version of the question
where and in what format is the "nexus-maven-repository-index.gz" file stored in the workspace?
The index is stored in the plugin's metadata location, i.e.
[workspace root]/.metadata/.plugins/org.maven.ide.eclipse/nexus
There will be one folder for each remote repository index in use.
You can configure the plugin to not download the index at startup too. Got to Window->Preferences->Maven and uncheck Download repository indexes at startup, you'll have to remember to reactivate it to get any updates though
Update:
I just verified that copying the metadata works. M2Eclipse will still contact the repository to download the deltas (assuming the above option is checked), but that only takes a few moments as it is only downloading the deltas.
Depending on your situation, you may want to try running a managed repository such as artifactory or nexus.
Configure it as the one-true-source-of-everything in maven, that way the initial download should only be from a local location and hence fast.
There is similar problem in my company, due to the network/security restrictions, the index file can't be downloaded by m2eclipse.
I have tried to use apache, to direct maven.org to my localhost to provide the index.(it should work, you can try). But again, network restriction disables local pc level ds resolution.
Last solution is try to downlaod nexus-maven-repository-index.zip, extract everything inside this zip, except the timestamp file, and extract and replace everything into the corresponding index folder for central repository.
It works. :-D
Related
I just checked out maven based java project from svn to local box in eclipse where maven 3.0.2 is available. However while reviewing class path configuration many of dependencies are broken such as org.restlet-2.0.15.jar. Strange part is C:/Users/daeyoung/.m2/repository has that broken jar file but .lastUpdated is appended. After reading many posts from WWW, the way I understood to fix the problem is delete *.lastUpdated file then re-download it from central repo.
But when I reviewed pom.xml file there is no mention of repository (strange...) and as soon as I delete *.lastUpdated file, it comes back (e.g. org.restlet-2.0.15.jar.lastUpdated).
I am new to Maven.
I'd appreciate if someone can guide me to a right direction to fix this problem.
[update]
I created following user settings.xml file under /Users/daeyoung/.m2/ directory. I thought at least that would take care of downloading org.restlet package.
However when I ran mvn command (literally mvn) inside of project folder, system was saying..
I don't want to modify pom.xml file but rather via user settings.xml I thought I could connect to maven restlet repo and download specified target package but I am not sure what I am missing in here. I think contents of settings.xml is not correct.
I just want to say thanks to all who have given me advice. First I was not well equipped to understand the advice but more I looked at the problem/read about maven articles. It was clear what needs to be done to fix the problem.
Bottom line is I manually downloaded dependencies to ${user_name}/.m2/repository for missing jars. I configured ${MAVEN_HOME}/conf/settings.xml to point to local repository then I ran mvn validate/clean/package sequentially from eclipse via m2e plugin (or I could have done same thing from command line).
This is my first time using SVN or for that matter any version control. So, I've been able to check out a selenium project on my local machine. This source code was working fine on the other machine(my friend's), but on my machine it throws hundreds of errors such as "BeforeClass cannot be resolved to a type, Assert cannot be resolved to a type" etc.
I do know that this error could be because the required selenium jars may not have been setup in the build path. But, I can see all these selenium jars in the "lib" folder.
So, I want to understand if I need to reconfigure the build path. By the way, don't the project settings etc come by default as the same code works perfectly on other machine, which means the build path must have been configured there.
I know its a very basic question, but I assure you that I'm a naive coder.
Thanks for your help.
Note: I'm using Eclipse IDE
Eclipse's project configuration files (eg, .project, .classpath, .settings, etc) are designed to be checked in with the rest of the project. If done so, whenever the project is checked out to a workspace Eclipse will automatically use them to properly configure the project. Check that your friend checked in those files; if not, ask him to.
It looks like you did not add Eclipse project metadata files(.project,.classpath) & .settings folder to your source control system, so Eclipse doesn't know what your build path is or whether it is even a java project.
Go back to your other computer and look for the following files in your original project root...
.project
.classpath
.settings/*
Make sure all are present in Source Control System.
Hello!
My question is related to eclipse and maven integration, maven repositories and global index update from central mirror.
The quiz is:
Let's supose that I don't have specified any special mirror, nor
{maveninstallationfolder}\conf\settings.xml
neither
{user-home}.m2\settings.xml
So then, why or how eclipse 'maven repositories' tab decides to fetch central at
repo.maven.apache.org/maven2
or
repo1.maven.org/maven2
?
Which settings.xml is reloading eclipse when I click on 'reload settings' button?
I ask this because I have two different eclipse installations ('indigo' at work, 'juno' at home).
At home when I click on 'update index' it works ok. It updates it from central mirror repo.maven.apache.org
At work, doing the same operation it always fails trying to update it from repo1.maven.org (I don't know neither I care if because of firewall or proxy issues)
I would like to know how to change it and force it to fetch it from one or another.
I attach a picture to clarify
thanks in advance
If you have a preferred central repo or if you are using a company maven proxy (like nexus or artifactory) you can set it in the user settings.xml. You may have to create this file. This is normally in ~/.m2 on linux or c:\Users\YourUser\.m2 on Win7 or c:\Documents and Settings\YourUser\.m2 on WinXP (IIRC). Note that this is the same place as your local repostitory base folder.
When I create a new settings.xml on a machine that doesn't have one, I go to the maven2 documentations web pages, find the sample settings.xml that is there and copy it to a new file I create.
There is a global settings.xml in $M2_HOME\conf but it usually isn't changed from the default. It does document all the sections you can add to your settings.xml since both have the same sections. (If you are using the embedded version of maven in something like MyEclipse or the maven eclipse plugin, I don't know where they put it.)
For another question, if you need to configure Maven to use a corporate proxy to get out of the company network to maven central, you can put that information in your user settings.xml file--the same one you create to set the URL to use.
You may have different versions of Maven running on the two machines. That would explain the different names for central. But the two names both point to the same place.
I have a play framework project which run on remote server.
I'm trying to configure eclipse to work remotely on the project.
since no build is required my requirements are to be able to edit the project files from eclipse and automatically save on server, auto complete and debug.
I've installed Remote System Explorer on eclipse and setup a remote ftp connection to my server.
The play environment on my server is under
/play-2.0.2/
My project path is
/play-2.0.2/test
In RSE I clicked on /play-2.0.2/test and 'Create Remote Project'
Now in Java perspective I can browse through the project, change files and then automatically save to server.
My problem is auto completion of play framework library doesn't work well since all the reference are to /play-2.0.2/repository/...
any idea how to solve it? I tried to play with the build path but no success
Thanks!
So, I was looking into achieving the same thing myself.
The problem you are experiencing is due to the fact that the .classpath file has absolute values. While for me, besides the symlink that doesn't work between two different kinds of O.S., I thought on another two solutions:
Use sed to rewrite the classpath on the .classpath file after it's generated
Use a "classpathTransformerFactory" for the sbt eclipse command
I haven't had to deal with it (it's more of want to than whatnot) as soon as I do, I will explore the two options and post details. I just leave the answer here in case someone wants to pick up where you left.
Another thing is:
Seen that sbt picks up the libs referenced in build.sbt, downloads the jars and puts them in the ~/.ivy2 directory, if you use any of those methods to change the reference from the remote machine to the local one, you would need to make sure that the same libs are on the local ivy cache. So, just as I wrote this, another idea came to mind:
sbt eclipse or play eclipse or activator eclipse [it should be the same] on a local environment, and on the remote one, then, transfer the .project and .classpath files from the local to the remote, and see what happens (if it doesn't work, scan them for absolute and incorrect paths that might need to be changed)
Sorry for the unproved answer, still I think it's better than no answer.
Cheers
I've been trying to do a maven build of this project. It downloads a lot of artifacts from a repository and builds fine on one account (local account). However, when i log into a network account(same computer) with the same eclipse/maven installation, same workspace, same environment variables(I only have 2 user ones), it fails because it tries to read from a different directory that doesn't exist (C:/schema/blah/blah/blah) when it should be reading from (C:/workspace/Echo/target/main/xsd/blah/blah/blah)
Is there something inside eclipse or maven that stores local users settings i could look into. The code for this project would be nearly impossible to post since it has ~30 jar files. I'm at a loss.
Thank you in advance to anyone who has ideas or suggestions
~Ryan
check the .m2/settings.xml file in both user home directories. You may want to set the <localRepository> to the same (shared) location so it does not download the same artifacts from remote repositories twice.