--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/jdk.incubator.adba/share/classes/jdk/incubator/sql2/Transaction.java	Mon Apr 02 14:19:45 2018 -0400
@@ -0,0 +1,73 @@
+/*
+ * Copyright (c)  2017, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.  Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+package jdk.incubator.sql2;
+
+/**
+ * A mutable object that controls whether a transactionEnd Operation sends
+ * a database commit or a database rollback to the server. A transactionEnd
+ * Operation is created with a Transaction. By default a transactionEnd
+ * Operation requests that the database end the transaction with a commit.
+ * If Transaction#setRollbackOnly is called on the Transaction used to create
+ * the Operation prior to the Operation being executed, the Operation will
+ * request that the database end the transaction with a rollback.
+ * 
+ * Example:
+ *
+ * <pre>
+ * {@code
+ *   Transaction t = conn.transaction();
+ *   conn.countOperation(updateSql)
+ *       .resultProcessor( count -> { if (count > 1) t.setRollbackOnly(); } )
+ *       .submit();
+ *   conn.commit(t);
+ * }</pre>
+ *
+ * A Transaction can not be used to create more than one endTransaction 
+ * Operation.
+ * 
+ * A Transaction is thread safe.
+ */
+public interface Transaction {
+
+  /**
+   * Causes an endTransactionOperation created with this Transaction that is executed
+   * subsequent to this call to perform a rollback. If this method is not called
+   * prior to Operation execution the Operation will perform a commit.
+   *
+   * @return true if the call succeeded. False if the call did not succeed in
+   * setting the Transaction rollback only because the endTransaction
+   * Operation had already been executed.
+   */
+  public boolean setRollbackOnly();
+
+  /**
+   * Returns {@code true} iff the {@link setRollbackOnly} method has been called
+   * on this Transaction
+   *
+   * @return {@code true} if {@link setRollbackOnly} has been called.
+   */
+  public boolean isRollbackOnly();
+
+}