Example usage for org.eclipse.jgit.lib RefDatabase newUpdate

Introduction

In this page you can find the example usage for org.eclipse.jgit.lib RefDatabase newUpdate.

Prototype

@NonNull
public abstract RefUpdate newUpdate(String name, boolean detach) throws IOException;

Source Link

Document

Create a new update command to create, modify or delete a reference.

Usage

From source file:org.uberfire.java.nio.fs.jgit.util.commands.RefTreeUpdateCommand.java

License:Apache License

private void commit(final Repository repo, final RevCommit original, final BiFunction fun) throws IOException {
    try (final ObjectReader reader = repo.newObjectReader();
            final ObjectInserter inserter = repo.newObjectInserter();
            final RevWalk rw = new RevWalk(reader)) {

        final RefTreeDatabase refdb = (RefTreeDatabase) repo.getRefDatabase();
        final RefDatabase bootstrap = refdb.getBootstrap();
        final RefUpdate refUpdate = bootstrap.newUpdate(refdb.getTxnCommitted(), false);

        final CommitBuilder cb = new CommitBuilder();
        final Ref ref = bootstrap.exactRef(refdb.getTxnCommitted());
        final RefTree tree;
        if (ref != null && ref.getObjectId() != null) {
            tree = RefTree.read(reader, rw.parseTree(ref.getObjectId()));
            cb.setParentId(ref.getObjectId());
            refUpdate.setExpectedOldObjectId(ref.getObjectId());
        } else {//from w  w  w.  j  av a  2 s.  c om
            tree = RefTree.newEmptyTree();
            refUpdate.setExpectedOldObjectId(ObjectId.zeroId());
        }

        if (fun.apply(reader, tree)) {
            final Ref ref2 = bootstrap.exactRef(refdb.getTxnCommitted());
            if (ref2 == null || ref2.getObjectId().equals(ref != null ? ref.getObjectId() : null)) {
                cb.setTreeId(tree.writeTree(inserter));
                if (original != null) {
                    cb.setAuthor(original.getAuthorIdent());
                    cb.setCommitter(original.getAuthorIdent());
                } else {
                    final PersonIdent personIdent = new PersonIdent("user", "user@example.com");
                    cb.setAuthor(personIdent);
                    cb.setCommitter(personIdent);
                }
                refUpdate.setNewObjectId(inserter.insert(cb));
                inserter.flush();
                final RefUpdate.Result result = refUpdate.update(rw);
                switch (result) {
                case NEW:
                case FAST_FORWARD:
                    break;
                default:
                    throw new RuntimeException(
                            repo.getDirectory() + " -> " + result.toString() + " : " + refUpdate.getName());
                }
                final File commited = new File(repo.getDirectory(), refdb.getTxnCommitted());
                final File accepted = new File(repo.getDirectory(), refdb.getTxnNamespace() + "accepted");
                Files.copy(commited.toPath(), accepted.toPath(), StandardCopyOption.REPLACE_EXISTING);
            }
        }
    }
}

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