gt: 			if (transport != null)
context: /*
   * Copyright (C) 2011, Christoph Brill <egore911@egore911.de>
   * and other copyright owners as documented in the project's IP log.
   *
   * This program and the accompanying materials are made available
   * under the terms of the Eclipse Distribution License v1.0 which
   * accompanies this distribution, is reproduced below, and is
   * available at http://www.eclipse.org/org/documents/edl-v10.php
   *
   * All rights reserved.
   *
   * Redistribution and use in source and binary forms, with or
   * without modification, are permitted provided that the following
   * conditions are met:
   *
   * - Redistributions of source code must retain the above copyright
   *   notice, this list of conditions and the following disclaimer.
   *
   * - Redistributions in binary form must reproduce the above
   *   copyright notice, this list of conditions and the following
   *   disclaimer in the documentation and/or other materials provided
   *   with the distribution.
   *
   * - Neither the name of the Eclipse Foundation, Inc. nor the
   *   names of its contributors may be used to endorse or promote
   *   products derived from this software without specific prior
   *   written permission.
   *
   * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
   * CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
   * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
   * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
   * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
   * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
   * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
   * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
   * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
   * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
   * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
   * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   */
  package org.eclipse.jgit.api;
  
  import java.net.URISyntaxException;
  import java.text.MessageFormat;
  import java.util.ArrayList;
  import java.util.Collection;
  import java.util.HashMap;
  import java.util.Map;
  
  import org.eclipse.jgit.api.errors.GitAPIException;
  import org.eclipse.jgit.api.errors.InvalidRemoteException;
  import org.eclipse.jgit.api.errors.JGitInternalException;
  import org.eclipse.jgit.errors.NotSupportedException;
  import org.eclipse.jgit.errors.TransportException;
  import org.eclipse.jgit.internal.JGitText;
  import org.eclipse.jgit.lib.Constants;
  import org.eclipse.jgit.lib.Ref;
  import org.eclipse.jgit.lib.Repository;
  import org.eclipse.jgit.transport.FetchConnection;
  import org.eclipse.jgit.transport.RefSpec;
  import org.eclipse.jgit.transport.Transport;
  import org.eclipse.jgit.transport.URIish;
  
  /**
   * The ls-remote command
   *
   * @see <a
   *      href="http://www.kernel.org/pub/software/scm/git/docs/git-ls-remote.html"
   *      >Git documentation about ls-remote</a>
   */
  public class LsRemoteCommand extends
  		TransportCommand<LsRemoteCommand, Collection<Ref>> {
  
  	private String remote = Constants.DEFAULT_REMOTE_NAME;
  
  	private boolean heads;
  
  	private boolean tags;
  
  	private String uploadPack;
  
  	/**
  	 * @param repo
  	 *            local repository or null for operation without local
  	 *            repository
  	 */
  	public LsRemoteCommand(Repository repo) {
  		super(repo);
  	}
  
  	/**
  	 * The remote (uri or name) used for the fetch operation. If no remote is
  	 * set, the default value of <code>Constants.DEFAULT_REMOTE_NAME</code> will
  	 * be used.
  	 *
  	 * @see Constants#DEFAULT_REMOTE_NAME
  	 * @param remote
  	 * @return {@code this}
  	 */
  	public LsRemoteCommand setRemote(String remote) {
  		checkCallable();
  		this.remote = remote;
  		return this;
  	}
  
  	/**
  	 * Include refs/heads in references results
  	 *
  	 * @param heads
  	 * @return {@code this}
  	 */
  	public LsRemoteCommand setHeads(boolean heads) {
  		this.heads = heads;
  		return this;
  	}
  
  	/**
  	 * Include refs/tags in references results
  	 *
  	 * @param tags
  	 * @return {@code this}
  	 */
  	public LsRemoteCommand setTags(boolean tags) {
  		this.tags = tags;
  		return this;
  	}
  
  	/**
  	 * The full path of git-upload-pack on the remote host
  	 *
  	 * @param uploadPack
  	 * @return {@code this}
  	 */
  	public LsRemoteCommand setUploadPack(String uploadPack) {
  		this.uploadPack = uploadPack;
  		return this;
  	}
  
  	/**
  	 * Executes the {@code LsRemote} command with all the options and parameters
  	 * collected by the setter methods (e.g. {@link #setHeads(boolean)}) of this
  	 * class. Each instance of this class should only be used for one invocation
  	 * of the command. Don't call this method twice on an instance.
  	 *
  	 * @return a collection of references in the remote repository
  	 * @throws InvalidRemoteException
  	 *             when called with an invalid remote uri
  	 * @throws org.eclipse.jgit.api.errors.TransportException
  	 *             for errors that occurs during transport
  	 */
  	public Collection<Ref> call() throws GitAPIException,
  			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();
  