Newbie questions regarding jgit

Hi all,

I am git newbie and looking to use jgit in a servlet endpoint.

Where can I find a public maven repo for gjit? It seems there is one somewhere because of the following file in src tree:

Now I am wondering where to begin to learn how to do the equivalent of the following commands via the gjit Java API:

* git add /file/
* git rm /file/
* git mv /file
* Whatever is the git way to get a specific version of a file

I am hoping that there aremore docs, samples, tutorials etc. somewhere that I am missing. Thanks for any help you can provide. Some pointers or code fragments would be terrific.

I would also like to have a public available maven repository for JGit. If Shawn or Robin acks, I can look into hosting one in the SVN area of the Google Code project page. Given the lack of a real release cycle it probably only makes sense to have a snapshot repository.

Quoted 4 lines · Jonas Fonseca

I would also like to have a public available maven repository for JGit. If Shawn or Robin acks, I can look into hosting one in the SVN area of the Google Code project page. Given the lack of a real release cycle it probably only makes sense to have a snapshot repository.

I have an account on kernel.org and was planning on hosting snapshots there, but I haven't had time to think about setting up a jgit area and pushing something into it. ;-)

We could also just host it in SVN in Google Code. I can give you admin rights on the egit project if you want to set it up and maintain it there. The downside is you need to use svn or git-svn to upload files to it, right?

I don't think admin rights are necessary as long as I have "commit"/webdav access. And no svn or git-svn interaction should be needed to upload to the maven repository.

Take a look at the distributionManagement section of the google-maven-repository:

- http://google-maven-repository.googlecode.com/svn/repository/com/google/google/1/google-1.pom

Looks pretty easy to set up. About maintaining it, I don't mind doing "mvn deploy" once in a while, but some kind of update policy should probably be worked out in any case.

Quoted 3 lines · Jonas Fonseca

I don't think admin rights are necessary as long as I have "commit"/webdav access. And no svn or git-svn interaction should be needed to upload to the maven repository.

Then have at it. It sounds like it would be worthwhile setting up.

Shawn O. Pearce <[email protected]> wrote Tue, Nov 11, 2008:

Quoted 6 lines

Quoted 3 lines · Jonas Fonseca

I don't think admin rights are necessary as long as I have "commit"/webdav access. And no svn or git-svn interaction should be needed to upload to the maven repository.

Then have at it. It sounds like it would be worthwhile setting up.

Instructions at http://code.google.com/p/egit/wiki/ConfiguringMaven

jgit-maven/jgit/pom.xml +0 -0

index a123470..c370783 100644

jgit-maven/jgit/pom.xml ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. · line 192

Quoted 5 lines · Jonas Fonseca

jgit-maven/jgit/pom.xml +5 -0

+    <distributionManagement>
+        <snapshotRepository>
+            <id>jgit-maven-snapshot-repository</id>
+            <name>JGit Maven Snapshot Repository</name>
+            <url>dav:https://egit.googlecode.com/svn/maven/snapshot-repository/</url>

Shouldn't that be http:// and not https:// ?

Quoted 8 lines · Jonas Fonseca

I don't think admin rights are necessary as long as I have "commit"/webdav access. And no svn or git-svn interaction should be needed to upload to the maven repository.

Take a look at the distributionManagement section of the google-maven-repository:

Quoted 5 lines

- http://google-maven-repository.googlecode.com/svn/repository/com/google/google/1/google-1.pom

Looks pretty easy to set up. About maintaining it, I don't mind doing "mvn deploy" once in a while, but some kind of update policy should probably be worked out in any case.

Then have at it. It sounds like it would be worthwhile setting up.

--
Shawn.
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Quoted 8 lines

Quoted 5 lines · Jonas Fonseca

I would also like to have a public available maven repository for JGit. If Shawn or Robin acks, I can look into hosting one in the SVN area of the Google Code project page. Given the lack of a real release cycle it probably only makes sense to have a snapshot repository.

Quoted 9 lines

Now I am wondering where to begin to learn how to do the equivalent of the following commands via the gjit Java API:

* git add /file/
* git rm /file/
* git mv /file
* Whatever is the git way to get a specific version of a file

JGit currently has two APIs for working with the index, which will allow you to add, remove and move data around in the tree. In nbgit I ended up using GitIndex, which I found easier to figure out. As I understand it, in the long run you want to use the DirCache API, but it is still a work in progress.

Quoted 5 lines

I am hoping that there aremore docs, samples, tutorials etc. somewhere that I am missing. Thanks for any help you can provide. Some pointers or code fragments would be terrific.

I started working on a tutorial for JGit, but didn't get very far so it mostly consists of stub pages.

- http://code.google.com/docreader/#p=egit&s=egit&t=JGitTutorial

I have been working on moving the tutorial to maven project before starting to write the more code heavy topics. This would make it possible to include code snippets in the tutorial, while also allowing to compile and test the examples.

Jonas Fonseca wrote:
...

Quoted 10 lines

Quoted 9 lines

Now I am wondering where to begin to learn how to do the equivalent of the following commands via the gjit Java API:

* git add /file/
* git rm /file/
* git mv /file
* Whatever is the git way to get a specific version of a file

Quoted 6 lines

JGit currently has two APIs for working with the index, which will allow you to add, remove and move data around in the tree. In nbgit I ended up using GitIndex, which I found easier to figure out. As I understand it, in the long run you want to use the DirCache API, but it is still a work in progress.

I am happy to use GitIndex now and switch to DirCache API later when it is ready. Can I please get some pseudo-code fragments on how to do the use cases I identified above? The javadoc is still not obvious to me.

Quoted 9 lines

Quoted 5 lines

I am hoping that there aremore docs, samples, tutorials etc. somewhere that I am missing. Thanks for any help you can provide. Some pointers or code fragments would be terrific.

I started working on a tutorial for JGit, but didn't get very far so it mostly consists of stub pages.

Quoted 7 lines

- http://code.google.com/docreader/#p=egit&s=egit&t=JGitTutorial

I have been working on moving the tutorial to maven project before starting to write the more code heavy topics. This would make it possible to include code snippets in the tutorial, while also allowing to compile and test the examples.

The wiki is an awesome resource even in its current state. Thank you. I would be glad to help contribute improvements to wiki if you give me write privilege. What I could do is take the help I get from the list and then update wiki carefully as appropriate if you want me to help.

Thanks again to all of you for helping get me bootstrapped with gjit and git.

For my immediate needs, I need to implement a GitRepository class with two methods using gjit as shown below. I would appreciate any guidance and pseudo-code examples on how to implement these methods. Please keep in mind that I am just getting to know git itself and gjit was key to my considering git over Mercurial and other distributed VCSs.

public class GitRepositoryManager {

   Repository gitRepo;

   ...

   /**
    * Gets the content of specified file in git Repo.
    *
    * @parameter relativePath the relative path in jitRepo for  

desired file to get
* @parameter versionName the versionName for the desired file. It
will be unmarshalled from String to ObjectId.
* @return the content of the desired file version packaged as a
DataHandler.

    */
   public DataHandler get(String relativePath, String versionName) 
throws RepositoryException {
       DataHandler dh = null;

       ...
             return dh;

}

/**
* Creates a new version of specified version of file in git Repo. *
* @parameter relativePath the relative path in jitRepo for
desired file to get
* @parameter versionName the versionName for the desired file. It
will be unmarshalled from String to ObjectId.
* @parameter content the content of the new version for specified
file packaged as a DataHandler.

    */
   public void update(String relativePath, String versionName, 
DataHandler content) throws RepositoryException {
       ...

}

}

Quoted 46 lines · Farrukh Najmi

Jonas Fonseca wrote:
...

Quoted 10 lines

Quoted 9 lines

Now I am wondering where to begin to learn how to do the equivalent of the following commands via the gjit Java API:

* git add /file/
* git rm /file/
* git mv /file
* Whatever is the git way to get a specific version of a file

Quoted 6 lines

JGit currently has two APIs for working with the index, which will allow you to add, remove and move data around in the tree. In nbgit I ended up using GitIndex, which I found easier to figure out. As I understand it, in the long run you want to use the DirCache API, but it is still a work in progress.

I am happy to use GitIndex now and switch to DirCache API later when it is ready. Can I please get some pseudo-code fragments on how to do the use cases I identified above? The javadoc is still not obvious to me.

Quoted 9 lines

Quoted 5 lines

I am hoping that there aremore docs, samples, tutorials etc. somewhere that I am missing. Thanks for any help you can provide. Some pointers or code fragments would be terrific.

I started working on a tutorial for JGit, but didn't get very far so it mostly consists of stub pages.

Quoted 7 lines

- http://code.google.com/docreader/#p=egit&s=egit&t=JGitTutorial

I have been working on moving the tutorial to maven project before starting to write the more code heavy topics. This would make it possible to include code snippets in the tutorial, while also allowing to compile and test the examples.

The wiki is an awesome resource even in its current state. Thank you. I would be glad to help contribute improvements to wiki if you give me write privilege. What I could do is take the help I get from the list and then update wiki carefully as appropriate if you want me to help.

Thanks again to all of you for helping get me bootstrapped with gjit and git.

So far I have figured out how to get the treeWalk for the path filter as shown below.
Now I am lost as to how to get the blob associated with the treeWalk. TIA for your help.

/**
* Gets the content of specified file in git Repo.
*
* @parameter relativePath the relative path in jitRepo for desired
file to get
* @parameter versionName the versionName for the desired file. It
will be unmarshalled from String to ObjectId.
* @return the content of the desired file version packaged as a
DataHandler.
*/
public DataHandler get(String relativePath, String versionName) throws

RepositoryException {
           ObjectId retrieveStart = repository.resolve(versionName);
           RevWalk revWalk = new RevWalk(repository);
           RevCommit entry = revWalk.parseCommit(retrieveStart);
           RevTree revTree = entry.getTree();

           TreeWalk treeWalk = TreeWalk.forPath(repository,  

relativePath, revTree);

           //Not sure how to get the blob next

So far I have figured out how to get the treeWalk for the path filter as shown below.
Now I am lost as to how to get the blob associated with the treeWalk. TIA for your help.

Hi all,

I am git newbie and looking to use jgit in a servlet endpoint.

Where can I find a public maven repo for gjit? It seems there is one somewhere because of the following file in src tree:

jgit-maven/jgit/pom.xml

For now I have built the jar using /make_jgit.sh and installed the pom manually using m

mvn install:install-file -DpomFile=jgit-maven/jgit/pom.xml -Dfile=jgit.jar

I have added the following dependency to my maven project's pom.xml:

<dependency>

    <groupId>org.spearce</groupId>
    <artifactId>jgit</artifactId>
    <version>0.4-SNAPSHOT</version>

</dependency>

Now I am wondering where to begin to learn how to do the equivalent of the following commands via the gjit Java API:

* git add /file/
* git rm /file/
* git mv /file
* Whatever is the git way to get a specific version of a file

I am hoping that there aremore docs, samples, tutorials etc. somewhere that I am missing. Thanks for any help you can provide. Some pointers or code fragments would be terrific.