Examples of org.eclipse.jgit.transport.FetchConnection

org.eclipse.jgit.transport.FetchConnection
Lists known refs from the remote and copies objects of selected refs.
A fetch connection typically connects to the git-upload-pack service running where the remote repository is stored. This provides a one-way object transfer service to copy objects from the remote repository into this local repository.
Instances of a FetchConnection must be created by a {@link Transport} thatimplements a specific object transfer protocol that both sides of the connection understand.
FetchConnection instances are not thread safe and may be accessed by only one thread at a time. @see Transport

    final URL loc = bundle.toURL();
    final URIish uri = new URIish(loc);


    final Transport t = new TransportBundleStream(git.getRepository(), uri, loc.openStream());
    try {
      final FetchConnection src = t.openFetch();
      final Ref target = src.getRef(refName);


      final Collection<Ref> want = singleton(target);
      final Set<ObjectId> have = emptySet();
      src.fetch(NullProgressMonitor.INSTANCE, want, have);


      return target.getObjectId().getName();


    } finally {
      t.close();

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        if (heads)
          refSpecs.add(new RefSpec(
              "refs/heads/*:refs/remotes/origin/*"));
        Collection<Ref> refs;
        Map<String, Ref> refmap = new HashMap<String, Ref>();
        FetchConnection fc = transport.openFetch();
        try {
          refs = fc.getRefs();
          if (refSpecs.isEmpty())
            for (Ref r : refs)
              refmap.put(r.getName(), r);
          else
            for (Ref r : refs)
              for (RefSpec rs : refSpecs)
                if (rs.matchSource(r)) {
                  refmap.put(r.getName(), r);
                  break;
                }
        } finally {
          fc.close();
        }
        return refmap.values();


      } catch (TransportException e) {
        throw new JGitInternalException(

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      InvalidRemoteException,
      org.eclipse.jgit.api.errors.TransportException {
    checkCallable();


    Transport transport = null;
    FetchConnection fc = null;
    try {
      transport = Transport.open(repo, remote);
      transport.setOptionUploadPack(uploadPack);
      configure(transport);
      Collection<RefSpec> refSpecs = new ArrayList<RefSpec>(1);
      if (tags)
        refSpecs.add(new RefSpec(
            "refs/tags/*:refs/remotes/origin/tags/*")); //$NON-NLS-1$
      if (heads)
        refSpecs.add(new RefSpec("refs/heads/*:refs/remotes/origin/*")); //$NON-NLS-1$
      Collection<Ref> refs;
      Map<String, Ref> refmap = new HashMap<String, Ref>();
      fc = transport.openFetch();
      refs = fc.getRefs();
      if (refSpecs.isEmpty())
        for (Ref r : refs)
          refmap.put(r.getName(), r);
      else
        for (Ref r : refs)
          for (RefSpec rs : refSpecs)
            if (rs.matchSource(r)) {
              refmap.put(r.getName(), r);
              break;
            }
      return refmap.values();
    } catch (URISyntaxException e) {
      throw new InvalidRemoteException(MessageFormat.format(
          JGitText.get().invalidRemote, remote));
    } catch (NotSupportedException e) {
      throw new JGitInternalException(
          JGitText.get().exceptionCaughtDuringExecutionOfLsRemoteCommand,
          e);
    } catch (TransportException e) {
      throw new org.eclipse.jgit.api.errors.TransportException(
          e.getMessage(),
          e);
    } finally {
      if (fc != null)
        fc.close();
      if (transport != null)
        transport.close();
    }
  }

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      InvalidRemoteException,
      org.eclipse.jgit.api.errors.TransportException {
    checkCallable();


    Transport transport = null;
    FetchConnection fc = null;
    try {
      if (repo != null)
        transport = Transport.open(repo, remote);
      else
        transport = Transport.open(new URIish(remote));
      transport.setOptionUploadPack(uploadPack);
      configure(transport);
      Collection<RefSpec> refSpecs = new ArrayList<RefSpec>(1);
      if (tags)
        refSpecs.add(new RefSpec(
            "refs/tags/*:refs/remotes/origin/tags/*")); //$NON-NLS-1$
      if (heads)
        refSpecs.add(new RefSpec("refs/heads/*:refs/remotes/origin/*")); //$NON-NLS-1$
      Collection<Ref> refs;
      Map<String, Ref> refmap = new HashMap<String, Ref>();
      fc = transport.openFetch();
      refs = fc.getRefs();
      if (refSpecs.isEmpty())
        for (Ref r : refs)
          refmap.put(r.getName(), r);
      else
        for (Ref r : refs)
          for (RefSpec rs : refSpecs)
            if (rs.matchSource(r)) {
              refmap.put(r.getName(), r);
              break;
            }
      return refmap.values();
    } catch (URISyntaxException e) {
      throw new InvalidRemoteException(MessageFormat.format(
          JGitText.get().invalidRemote, remote));
    } catch (NotSupportedException e) {
      throw new JGitInternalException(
          JGitText.get().exceptionCaughtDuringExecutionOfLsRemoteCommand,
          e);
    } catch (TransportException e) {
      throw new org.eclipse.jgit.api.errors.TransportException(
          e.getMessage(),
          e);
    } finally {
      if (fc != null)
        fc.close();
      if (transport != null)
        transport.close();
    }
  }

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