Oracle - Implementation of Batch Insertion

A combination of the 6 "commits" of PR dotnet#10071

With the updated files from the branch dev!

samples/OracleProvider/src/OracleProvider/Storage/Internal/OracleRelationalCommandBuilderFactory.cs

@@ -312,18 +312,7 @@ private DbCommand CreateCommand(
                         {
                             parameter.AddDbParameter(command, parameterValues);
                         }
-                    }
-
-                    // HACK: Need to make it easier to add this in update pipeline.
-                    if (command.CommandText.Contains(":cur"))
-                    {
-                        command.Parameters.Add(
-                            new OracleParameter(
-                                "cur",
-                                OracleDbType.RefCursor,
-                                DBNull.Value,
-                                ParameterDirection.Output));
-                    }
+                    } 
 
                     return command;
                 }

samples/OracleProvider/src/OracleProvider/Update/Internal/IOracleUpdateSqlGenerator.cs

@@ -0,0 +1,32 @@
+// Copyright (c) .NET Foundation. All rights reserved.
+// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
+
+using System.Collections.Generic;
+using System.Text;
+
+namespace Microsoft.EntityFrameworkCore.Update.Internal
+{
+    public interface IOracleUpdateSqlGenerator : IUpdateSqlGenerator
+    {
+        ResultSetMapping AppendBatchInsertOperation(
+            StringBuilder commandStringBuilder,
+            Dictionary<string, string> variablesInsert,
+            IReadOnlyList<ModificationCommand> modificationCommands,
+            int commandPosition,
+            ref int cursorPosition);
+
+        ResultSetMapping AppendBatchUpdateOperation(
+            StringBuilder commandStringBuilder,
+            StringBuilder variablesCommand,
+            IReadOnlyList<ModificationCommand> modificationCommands, 
+            int commandPosition,
+            ref int cursorPosition);
+
+        ResultSetMapping AppendBatchDeleteOperation(
+            StringBuilder commandStringBuilder,
+            StringBuilder variablesCommand,
+            IReadOnlyList<ModificationCommand> modificationCommands,
+            int commandPosition,
+            ref int cursorPosition);
+    }
+}