/*
* ModeShape (http://www.modeshape.org)
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.modeshape.connector.git;
import java.io.IOException;
import org.eclipse.jgit.api.Git;
import org.eclipse.jgit.api.errors.GitAPIException;
import org.eclipse.jgit.lib.ObjectId;
import org.eclipse.jgit.lib.Ref;
import org.eclipse.jgit.lib.Repository;
import org.eclipse.jgit.revwalk.RevCommit;
import org.eclipse.jgit.revwalk.RevWalk;
import org.infinispan.schematic.document.Document;
import org.modeshape.jcr.spi.federation.DocumentWriter;
/**
* A {@link GitFunction} that returns the list of tags in this repository. The structure of this area of the repository is as
* follows:
*
* <pre>
* /tags/{tagName}
* </pre>
*/
public class GitTags extends GitFunction {
protected static final String NAME = "tags";
protected static final String ID = "/tags";
public GitTags( GitConnector connector ) {
super(NAME, connector);
}
@Override
public Document execute( Repository repository,
Git git,
CallSpecification spec,
DocumentWriter writer,
Values values ) throws GitAPIException, IOException {
if (spec.parameterCount() == 0) {
// This is the top-level "/branches" node
writer.setPrimaryType(GitLexicon.TAGS);
// Generate the child references to the branches ...
addTagsAsChildren(git, spec, writer);
} else if (spec.parameterCount() == 1) {
// This is a particular branch node ...
writer.setPrimaryType(GitLexicon.TAG);
String tagName = spec.parameter(0);
// Get the Ref, which doesn't directly know about the commit SHA1, so we have to parse the commit ...
Ref ref = repository.getRef(tagName);
if (ref == null) return null; // invalid tag name
RevWalk walker = new RevWalk(repository);
try {
RevCommit commit = walker.parseCommit(ref.getObjectId());
// Construct the references to other nodes in this source ...
ObjectId objId = commit.getId();
writer.addProperty(GitLexicon.OBJECT_ID, objId.name());
writer.addProperty(GitLexicon.TREE, GitTree.referenceToTree(objId, objId.name(), values));
writer.addProperty(GitLexicon.HISTORY, GitHistory.referenceToHistory(objId, tagName, values));
writer.addProperty(GitLexicon.DETAIL, GitCommitDetails.referenceToCommit(objId, values));
} finally {
walker.dispose();
}
} else {
return null;
}
return writer.document();
}
}