/*******************************************************************************
* Copyright (C) 2010, Dariusz Luksza <dariusz@luksza.org>
*
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*******************************************************************************/
package org.eclipse.egit.core.op;
import java.io.IOException;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.core.runtime.NullProgressMonitor;
import org.eclipse.core.runtime.jobs.ISchedulingRule;
import org.eclipse.egit.core.internal.CoreText;
import org.eclipse.jgit.lib.Constants;
import org.eclipse.jgit.lib.ObjectId;
import org.eclipse.jgit.lib.ObjectInserter;
import org.eclipse.jgit.lib.RefUpdate;
import org.eclipse.jgit.lib.Repository;
import org.eclipse.jgit.lib.TagBuilder;
import org.eclipse.jgit.lib.RefUpdate.Result;
import org.eclipse.osgi.util.NLS;
import org.eclipse.team.core.TeamException;
/**
* Tags repository with given {@link TagBuilder} object.
*/
public class TagOperation implements IEGitOperation {
private final TagBuilder tag;
private final Repository repo;
private final boolean shouldMoveTag;
/**
* Construct TagOperation
*
* @param repo
* @param tag
* @param shouldMoveTag if <code>true</code> it will replace tag with same name
*/
public TagOperation(Repository repo, TagBuilder tag, boolean shouldMoveTag) {
this.tag = tag;
this.repo = repo;
this.shouldMoveTag = shouldMoveTag;
}
public void execute(IProgressMonitor m) throws CoreException {
IProgressMonitor monitor;
if (m == null)
monitor = new NullProgressMonitor();
else
monitor = m;
try {
monitor.beginTask(NLS.bind(CoreText.TagOperation_performingTagging,
tag.getTag()), 3);
ObjectId tagId = updateTagObject();
monitor.worked(1);
updateRepo(tagId);
monitor.worked(1);
} finally {
monitor.done();
}
}
private void updateRepo(ObjectId tagId) throws TeamException {
String refName = Constants.R_TAGS + tag.getTag();
try {
RefUpdate tagRef = repo.updateRef(refName);
tagRef.setNewObjectId(tagId);
tagRef.setForceUpdate(shouldMoveTag);
Result updateResult = tagRef.update();
if (updateResult != Result.NEW && updateResult != Result.FORCED)
throw new TeamException(NLS.bind(CoreText.TagOperation_taggingFailure,
tag.getTag(), updateResult));
} catch (IOException e) {
throw new TeamException(NLS.bind(CoreText.TagOperation_taggingFailure,
tag.getTag(), e.getMessage()), e);
}
}
private ObjectId updateTagObject() throws TeamException {
ObjectId startPointRef = tag.getObjectId();
try {
ObjectId tagId;
repo.open(startPointRef);
ObjectInserter inserter = repo.newObjectInserter();
try {
tagId = inserter.insert(tag);
inserter.flush();
} finally {
inserter.release();
}
return tagId;
} catch (IOException e) {
throw new TeamException(NLS.bind(CoreText.TagOperation_objectIdNotFound,
tag.getTag(), e.getMessage()), e);
}
}
public ISchedulingRule getSchedulingRule() {
return null;
}
}