001/*
002 * Licensed to DuraSpace under one or more contributor license agreements.
003 * See the NOTICE file distributed with this work for additional information
004 * regarding copyright ownership.
005 *
006 * DuraSpace licenses this file to you under the Apache License,
007 * Version 2.0 (the "License"); you may not use this file except in
008 * compliance with the License.  You may obtain a copy of the License at
009 *
010 *     http://www.apache.org/licenses/LICENSE-2.0
011 *
012 * Unless required by applicable law or agreed to in writing, software
013 * distributed under the License is distributed on an "AS IS" BASIS,
014 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
015 * See the License for the specific language governing permissions and
016 * limitations under the License.
017 */
018
019package org.fcrepo.kernel.api;
020
021/**
022 * A utility class for working with common transaction related operations.
023 * @author dbernstein
024 */
025public class TransactionUtils {
026
027    private TransactionUtils() {
028    }
029
030    /**
031     * Returns the transaction  ID if the transaction is both non-null and uncommitted. Otherwise it returns null.
032     * @param transaction The transaction
033     * @return The transaction ID or null
034     */
035    public static String openTxId(final Transaction transaction) {
036        return transaction == null || transaction.isCommitted() ? null : transaction.getId();
037    }
038}