/*
* Copyright (C) 2011, Chris Aniszczyk <caniszczyk@gmail.com>
* 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.io.IOException;
import org.eclipse.jgit.api.errors.JGitInternalException;
import org.eclipse.jgit.lib.CommitBuilder;
import org.eclipse.jgit.lib.Constants;
import org.eclipse.jgit.lib.ObjectId;
import org.eclipse.jgit.lib.ObjectInserter;
import org.eclipse.jgit.lib.PersonIdent;
import org.eclipse.jgit.lib.Ref;
import org.eclipse.jgit.lib.RefUpdate;
import org.eclipse.jgit.lib.Repository;
import org.eclipse.jgit.notes.Note;
import org.eclipse.jgit.notes.NoteMap;
import org.eclipse.jgit.revwalk.RevCommit;
import org.eclipse.jgit.revwalk.RevObject;
import org.eclipse.jgit.revwalk.RevWalk;
/**
* Remove object notes.
*
* @see <a href="http://www.kernel.org/pub/software/scm/git/docs/git-notes.html"
* >Git documentation about Notes</a>
*/
public class RemoveNoteCommand extends GitCommand<Note> {
private RevObject id;
private String notesRef = Constants.R_NOTES_COMMITS;
/**
* @param repo
*/
protected RemoveNoteCommand(Repository repo) {
super(repo);
}
/**
* @throws JGitInternalException
* upon internal failure
*/
public Note call() throws JGitInternalException {
checkCallable();
RevWalk walk = new RevWalk(repo);
ObjectInserter inserter = repo.newObjectInserter();
NoteMap map = NoteMap.newEmptyMap();
RevCommit notesCommit = null;
try {
Ref ref = repo.getRef(notesRef);
// if we have a notes ref, use it
if (ref != null) {
notesCommit = walk.parseCommit(ref.getObjectId());
map = NoteMap.read(walk.getObjectReader(), notesCommit);
}
map.set(id, null, inserter);
commitNoteMap(walk, map, notesCommit, inserter,
"Notes removed by 'git notes remove'");
return map.getNote(id);
} catch (IOException e) {
throw new JGitInternalException(e.getMessage(), e);
} finally {
inserter.release();
walk.release();
}
}
/**
* Sets the object id of object you want to remove a note
*
* @param id
* @return {@code this}
*/
public RemoveNoteCommand setObjectId(RevObject id) {
checkCallable();
this.id = id;
return this;
}
private void commitNoteMap(RevWalk walk, NoteMap map,
RevCommit notesCommit,
ObjectInserter inserter,
String msg)
throws IOException {
// commit the note
CommitBuilder builder = new CommitBuilder();
builder.setTreeId(map.writeTree(inserter));
builder.setAuthor(new PersonIdent(repo));
builder.setCommitter(builder.getAuthor());
builder.setMessage(msg);
if (notesCommit != null)
builder.setParentIds(notesCommit);
ObjectId commit = inserter.insert(builder);
inserter.flush();
RefUpdate refUpdate = repo.updateRef(notesRef);
if (notesCommit != null)
refUpdate.setExpectedOldObjectId(notesCommit);
else
refUpdate.setExpectedOldObjectId(ObjectId.zeroId());
refUpdate.setNewObjectId(commit);
refUpdate.update(walk);
}
/**
* @param notesRef
* the ref to read notes from. Note, the default value of
* {@link Constants#R_NOTES_COMMITS} will be used if nothing is
* set
* @return {@code this}
*
* @see Constants#R_NOTES_COMMITS
*/
public RemoveNoteCommand setNotesRef(String notesRef) {
checkCallable();
this.notesRef = notesRef;
return this;
}
}