[Nhibernate-commit] SF.net SVN: nhibernate:[5081] trunk/nhibernate/src/NHibernate.Test

[<fab...@us...>]

Revision: 5081
          http://nhibernate.svn.sourceforge.net/nhibernate/?rev=5081&view=rev
Author:   fabiomaulo
Date:     2010-07-29 13:10:59 +0000 (Thu, 29 Jul 2010)

Log Message:
-----------
Minor (example of custom LINQ extensions)

Modified Paths:
--------------
    trunk/nhibernate/src/NHibernate.Test/NHibernate.Test.csproj

Added Paths:
-----------
    trunk/nhibernate/src/NHibernate.Test/Linq/CustomExtensionsExample.cs

Added: trunk/nhibernate/src/NHibernate.Test/Linq/CustomExtensionsExample.cs
===================================================================
--- trunk/nhibernate/src/NHibernate.Test/Linq/CustomExtensionsExample.cs	                        (rev 0)
+++ trunk/nhibernate/src/NHibernate.Test/Linq/CustomExtensionsExample.cs	2010-07-29 13:10:59 UTC (rev 5081)
@@ -0,0 +1,67 @@
+using System.Collections.ObjectModel;
+using System.Linq;
+using System.Linq.Expressions;
+using System.Reflection;
+using System.Text.RegularExpressions;
+using NHibernate.Cfg.Loquacious;
+using NHibernate.Hql.Ast;
+using NHibernate.Linq;
+using NHibernate.Linq.Functions;
+using NHibernate.Linq.Visitors;
+using NUnit.Framework;
+using SharpTestsEx;
+
+namespace NHibernate.Test.Linq
+{
+	public static class MyLinqExtensions
+	{
+		public static bool IsLike(this string source, string pattern)
+		{
+			pattern = Regex.Escape(pattern);
+			pattern = pattern.Replace("%", ".*?").Replace("_", ".");
+			pattern = pattern.Replace(@"\[", "[").Replace(@"\]","]").Replace(@"\^", "^");
+
+			return Regex.IsMatch(source, pattern);
+		}
+	}
+
+	public class MyLinqToHqlGeneratorsRegistry: DefaultLinqToHqlGeneratorsRegistry
+	{
+		public MyLinqToHqlGeneratorsRegistry():base()
+		{
+			RegisterGenerator(ReflectionHelper.GetMethod(() => MyLinqExtensions.IsLike(null, null)),
+			                  new IsLikeGenerator());
+		}
+	}
+
+	public class IsLikeGenerator : BaseHqlGeneratorForMethod
+	{
+		public IsLikeGenerator()
+		{
+			SupportedMethods = new[] {ReflectionHelper.GetMethod(() => MyLinqExtensions.IsLike(null, null))};
+		}
+
+		public override HqlTreeNode BuildHql(MethodInfo method, Expression targetObject, 
+			ReadOnlyCollection<Expression> arguments, HqlTreeBuilder treeBuilder, IHqlExpressionVisitor visitor)
+		{
+			return treeBuilder.Like(visitor.Visit(arguments[0]).AsExpression(),
+			                        visitor.Visit(arguments[1]).AsExpression());
+		}
+	}
+
+	public class CustomExtensionsExample : LinqTestCase
+	{
+		protected override void Configure(NHibernate.Cfg.Configuration configuration)
+		{
+			configuration.LinqToHqlGeneratorsRegistry<MyLinqToHqlGeneratorsRegistry>();
+		}
+
+		[Test]
+		public void CanUseMyCustomExtension()
+		{
+			var contacts = (from c in db.Customers where c.ContactName.IsLike("%Thomas%") select c).ToList();
+			contacts.Count.Should().Be.GreaterThan(0);
+			contacts.Select(customer => customer.ContactName).All(c => c.Satisfy(customer => customer.Contains("Thomas")));
+		}
+	}
+}
\ No newline at end of file

Modified: trunk/nhibernate/src/NHibernate.Test/NHibernate.Test.csproj
===================================================================
--- trunk/nhibernate/src/NHibernate.Test/NHibernate.Test.csproj	2010-07-28 22:34:55 UTC (rev 5080)
+++ trunk/nhibernate/src/NHibernate.Test/NHibernate.Test.csproj	2010-07-29 13:10:59 UTC (rev 5081)
@@ -395,6 +395,7 @@
     <Compile Include="Linq\BinaryExpressionOrdererTests.cs" />
     <Compile Include="Linq\CasingTest.cs" />
     <Compile Include="Linq\CollectionAssert.cs" />
+    <Compile Include="Linq\CustomExtensionsExample.cs" />
     <Compile Include="Linq\DateTimeTests.cs" />
     <Compile Include="Linq\DynamicQueryTests.cs" />
     <Compile Include="Linq\EagerLoadTests.cs" />


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