Imported Upstream version 4.6.0.125

Former-commit-id: a2155e9bd80020e49e72e86c44da02a8ac0e57a4

mcs/class/referencesource/System.Data.Linq/SqlClient/Reader/ObjectReader.cs

@@ -0,0 +1,45 @@
+using System;
+using System.Collections;
+using System.Collections.Generic;
+using System.Collections.ObjectModel;
+using System.Data;
+using System.Linq.Expressions;
+using System.IO;
+using System.Linq;
+using System.Reflection;
+using System.Text;
+using System.Globalization;
+using System.Data.Common;
+using System.Data.Linq;
+using System.Data.Linq.Provider;
+
+namespace System.Data.Linq.SqlClient {
+
+    internal interface IObjectReader : IEnumerator, IDisposable {
+        IObjectReaderSession Session { get; }
+    }
+
+    internal interface IObjectReaderSession : IConnectionUser, IDisposable {
+        bool IsBuffered { get; }
+        void Buffer();
+    }
+
+    internal interface IReaderProvider : IProvider {
+        IDataServices Services { get; }
+        IConnectionManager ConnectionManager { get; }
+    }
+
+    internal interface IObjectReaderFactory {
+        IObjectReader Create(DbDataReader reader, bool disposeReader, IReaderProvider provider, object[] parentArgs, object[] userArgs, ICompiledSubQuery[] subQueries);
+        IObjectReader GetNextResult(IObjectReaderSession session, bool disposeReader);
+    }
+
+    internal interface IObjectReaderCompiler {
+        IObjectReaderFactory Compile(SqlExpression expression, Type elementType);
+        IObjectReaderSession CreateSession(DbDataReader reader, IReaderProvider provider, object[] parentArgs, object[] userArgs, ICompiledSubQuery[] subQueries);
+    }
+
+    internal interface ICompiledSubQuery {
+        IExecuteResult Execute(IProvider provider, object[] parentArgs, object[] userArgs);
+    }
+}