- Translate internal exceptions to corresponding API exception
- Do not catch GitAPI exceptions internally to an internal
exception. Just pass them to caller
- Mention thrown exceptions in javadoc

Change-Id: I9044cf86d2b0bcc8b63b7cc016e1bf0055a62053
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>

All commands should throw a GitAPIException so new exceptions can be
added without breaking the builds of old code, i.e. anyone that calls
a Git API should catch GitAPIException and not just the currently known
exceptions.

Now the only checked exceptions on Git API calls are GitException and
subclasses of it. New checked exceptions that are subclasses of
GitException may be added without breaking the API.

Javadoc for GitAPIException is declared on GitCommand and
inherited to subclasses. JGitInternalException is not explicitly
documented anymore.

Unfortunately this change itself breaks the API. The intention is
that it shall be possible to add new checked subclasses of
GitAPIException without breaking the API.

Bug: 366914
EGit-Change-Id: I50380f13fc82c22d0036f47c7859cc3a77e767c5
Change-Id: I50380f13fc82c22d0036f47c7859cc3a77e767c5
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>

Change-Id: I706332386415892d7a964b241442832ad79fa223

Change-Id: I763590a45d75f00a09097ab6f89581a3bbd3c797

In many cases applications want to handle TransportException hence
expose it as an API exception.

Change-Id: I64b885ecfb1a35bd93c89026c6298d1820ba69d0
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>

API commands either throw GitAPIException or JGitInternalException.

Also add missing javadoc and reduce nesting of catch blocks.

Change-Id: I9a3b302e1b3f373ee11a977a0e3d6213bfbd3cdf
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
Signed-off-by: Kevin Sawicki <kevin@github.com>

Refactored the three common transport configuration options:
credentials provider, timeout, and transport config callback
into a new TransportCommand base class which is now extended
by all commands that use a Transport object during execution.

Bug: 349188
Change-Id: I90c2c14fb4e3cc4712905158f9047153a0c235c2
Signed-off-by: Kevin Sawicki <kevin@github.com>
Signed-off-by: Chris Aniszczyk <zx@twitter.com>

Create separate loops based on whether the ref specs
collection is empty or not.

Change-Id: I2861b45fe083675e12ff47f591e104f8cf6dd216
Signed-off-by: Kevin Sawicki <kevin@github.com>

Bug: 343801
Change-Id: Ic651e8e09143e15ed459461b50b2222e13da56c4
Also-by: Chris Aniszczyk <caniszczyk@gmail.com>
Signed-off-by: Chris Aniszczyk <caniszczyk@gmail.com>