--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/jdk.incubator.adba/share/classes/jdk/incubator/sql2/DynamicMultiOperation.java	Mon Apr 02 14:19:45 2018 -0400
@@ -0,0 +1,140 @@
+/*
+ * 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;
+
+import java.time.Duration;
+import java.util.concurrent.CompletionStage;
+import java.util.function.BiConsumer;
+import java.util.function.Consumer;
+import java.util.function.Function;
+
+/**
+ *
+ * A multi-operation is an {@link Operation} that returns one or more results in
+ * addition to the result defined by the {@link Operation}. A {@link DynamicMultiOperation} is a
+ * multi-operation where the number and types of the results are determined at
+ * execution.
+ * 
+ * NOTE: In general one way to do things is sufficient however the API provides
+ * two ways to handle multiple results. This way, the dynamic way, is required
+ * because the number and type of results cannot always be known in advance. The
+ * static way is also provided because it is much easier to use when the number
+ * and type of results is known. The improvement in ease of use outweighs the
+ * duplication IMO. If necessary one or the other can be eliminated. Eliminating
+ * dynamic reduces functionality. Eliminating static reduces ease of use in what
+ * I believe to be a common case.
+ *
+ * @param <T> type of the result of this DynamicMultiOperation
+ */
+public interface DynamicMultiOperation<T> extends OutOperation<T> {
+
+  /**
+   * Provides a handler for count results. The provided handler is called for
+   * each count result. When called the first argument is the number of results
+   * that preceeded the current result. The second argument is a CountOperation
+   * that will process the current result. This CountOperation has not been
+   * configured in any way nor has it been submitted. The handler configures the
+   * CountOperation and submits it. The count result is processed when the 
+   * CountOperation is submitted.
+   * 
+   * If this method is not called any count result is ignored.
+   *
+   * @param handler not null
+   * @return this DynamicMultiOperation
+   * @throws IllegalStateException if the CountOperation has not been submitted
+   * when the call to the handler returns
+   */
+  public DynamicMultiOperation<T> onCount(BiConsumer<Integer, CountOperation<T>> handler);
+
+  /**
+   * Provides a handler for row sequence results. The provided handler is called for
+   * each row sequence result. When called the first argument is the number of results
+   * that preceeded the current result. The second argument is a RowOperation
+   * that will process the current result. This RowOperation has not been
+   * configured in any way nor has it been submitted. The handler configures the
+   * RowOperation and submits it. The row sequence result is processed when the 
+   * RowOperation is submitted.
+   * 
+   * If this method is not called any row sequence result is ignored.
+   *
+   * @param handler
+   * @return This DynamicMultiOperation
+   * @throws IllegalStateException if the RowOperation has not been submitted
+   * when the call to the handler returns
+   */
+  public DynamicMultiOperation<T> onRows(BiConsumer<Integer, RowOperation<T>> handler);
+  
+  /**
+   * Provides an error handler for this {@link Operation}. The provided handler 
+   * is called for each error that occurs. When called the first argument is the 
+   * number of results, including errors, that preceeded the current error. The
+   * second argument is a {@link Throwable} corresponding to the error. When the
+   * handler returns processing of the DynamicMultiOperation results continues. 
+   * Only one onError method may be called.
+   * 
+   * @param handler a BiConsumer that handles an error
+   * @return this DynamicMultiOperation
+   * @throws IllegalStateException if any onError method was called previously
+   */
+  public DynamicMultiOperation<T> onError(BiConsumer<Integer, Throwable> handler);
+
+  // Covariant overrides
+  
+  /**
+   * Provides an error handler for this {@link Operation}. If execution of this
+   * {@link Operation} results in an error, before the Operation is completed,
+   * the handler is called with the {@link Throwable} as the argument. When the
+   * handler returns the {@link Operation} is completed exceptionally with the 
+   * {@link Throwable}.
+   * 
+   * @param handler
+   * @return this DynamicMultiOperation
+   * @throws IllegalStateException if any onError method was called previously
+   */
+  @Override
+  public DynamicMultiOperation<T> onError(Consumer<Throwable> handler);
+  
+  @Override
+  public DynamicMultiOperation<T> outParameter(String id, SqlType type);
+  
+  @Override
+  public DynamicMultiOperation<T> apply(Function<Result.OutParameterMap, ? extends T> processor);
+
+  @Override
+  public DynamicMultiOperation<T> set(String id, Object value);
+
+  @Override
+  public DynamicMultiOperation<T> set(String id, Object value, SqlType type);
+
+  @Override
+  public DynamicMultiOperation<T> set(String id, CompletionStage<?> source);
+
+  @Override
+  public DynamicMultiOperation<T> set(String id, CompletionStage<?> source, SqlType type);
+
+  @Override
+  public DynamicMultiOperation<T> timeout(Duration minTime);
+
+}