--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/java.sql/share/classes/java/sql/ShardingKey.java	Tue Sep 12 19:03:39 2017 +0200
@@ -0,0 +1,76 @@
+/*
+ * Copyright (c) 2015, 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 java.sql;
+
+/**
+ * Interface used to indicate that this object represents a Sharding Key. A
+ * {@code ShardingKey} instance is only guaranteed to be compatible with the
+ * data source instance that it was derived from. A {@code ShardingKey} is
+ * created using {@link ShardingKeyBuilder}.
+ * <p>
+ * The following example illustrates the use of {@link ShardingKeyBuilder} to
+ * create a {@code ShardingKey}:
+ * <pre>
+ * {@code
+ *
+ *     DataSource ds = new MyDataSource();
+ *     ShardingKey shardingKey = ds.createShardingKeyBuilder()
+ *                           .subkey("abc", JDBCType.VARCHAR)
+ *                           .subkey(94002, JDBCType.INTEGER)
+ *                           .build();
+ * }
+ * </pre>
+ * <p>
+ *
+ * A {@code ShardingKey} may also be used for specifying a
+ * {@code superShardingKey}. Databases that support composite Sharding may use a
+ * {@code superShardingKey} to specify a additional level of partitioning within
+ * the Shard.
+ * <p>
+ * The following example illustrates the use of {@link ShardingKeyBuilder} to
+ * create a {@code superShardingKey} for an eastern region with a
+ * {@code ShardingKey} specified for the Pittsburgh branch office:
+ * <pre>
+ * {@code
+ *
+ *     DataSource ds = new MyDataSource();
+ *     ShardingKey superShardingKey = ds.createShardingKeyBuilder()
+ *                           .subkey("EASTERN_REGION", JDBCType.VARCHAR)
+ *                           .build();
+ *     ShardingKey shardingKey = ds.createShardingKeyBuilder()
+ *                           .subkey("PITTSBURGH_BRANCH", JDBCType.VARCHAR)
+ *                           .build();
+ *     Connection con = ds.createConnectionBuilder()
+ *                           .superShardingKey(superShardingKey)
+ *                           .shardingKey(shardingKey)
+ *                           .build();
+ * }
+ * </pre>
+ *
+ * @since 9
+ */
+public interface ShardingKey {
+
+}