Fixed NH-1104 creating a new projection

SVN: trunk@3411

src/NHibernate.Test/Criteria/CriteriaQueryTest.cs

@@ -668,6 +668,14 @@ public void ProjectionsTest()
 
 			Assert.AreEqual(7, array.Length);
 
+			ProjectionList pp1 = Projections.ProjectionList().Add(Projections.RowCountInt64());
+
+
+			object r = s.CreateCriteria(typeof(Enrolment))
+											.SetProjection(pp1)
+											.UniqueResult();
+			Assert.AreEqual(typeof (Int64), r.GetType());
+
 			IList list = s.CreateCriteria(typeof(Enrolment))
 				.CreateAlias("Student", "st")
 				.CreateAlias("Course", "co")

src/NHibernate/Criterion/Projections.cs

@@ -42,12 +42,21 @@ public static ProjectionList ProjectionList()
 		/// <summary>
 		/// The query row count, ie. <tt>count(*)</tt>
 		/// </summary>
-		/// <returns></returns>
+		/// <returns>The RowCount projection mapped to an <see cref="Int32"/>.</returns>
 		public static IProjection RowCount()
 		{
 			return new RowCountProjection();
 		}
 
+		/// <summary>
+		/// The query row count, ie. <tt>count(*)</tt>
+		/// </summary>
+		/// <returns>The RowCount projection mapped to an <see cref="Int64"/>.</returns>
+		public static IProjection RowCountInt64()
+		{
+			return new RowCountInt64Projection();
+		}
+
 		/// <summary>
 		/// A property value count
 		/// </summary>

src/NHibernate/Criterion/RowCountInt64Projection.cs

@@ -0,0 +1,14 @@
+using System;
+using NHibernate.Type;
+
+namespace NHibernate.Criterion
+{
+	[Serializable]
+	public class RowCountInt64Projection : RowCountProjection
+	{
+		public override IType[] GetTypes(ICriteria criteria, ICriteriaQuery criteriaQuery)
+		{
+			return new IType[] { NHibernateUtil.Int64 };
+		}
+	}
+}

src/NHibernate/NHibernate-2.0.csproj

@@ -556,6 +556,7 @@
     <Compile Include="Context\WebSessionContext.cs" />
     <Compile Include="CriteriaTransformer.cs" />
     <Compile Include="Criterion\Restrictions.cs" />
+    <Compile Include="Criterion\RowCountInt64Projection.cs" />
     <Compile Include="DebugHelpers\DictionaryProxy.cs" />
     <Compile Include="DebugHelpers\CollectionProxy.cs" />
     <Compile Include="Dialect\Function\AnsiExtractFunction.cs" />