--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Source/Data/Linq/Builder/DeleteBuilder.cs	Thu Mar 27 21:46:09 2014 +0400
@@ -0,0 +1,99 @@
+using System;
+using System.Linq.Expressions;
+
+namespace BLToolkit.Data.Linq.Builder
+{
+	using BLToolkit.Linq;
+	using Data.Sql;
+
+	class DeleteBuilder : MethodCallBuilder
+	{
+		protected override bool CanBuildMethodCall(ExpressionBuilder builder, MethodCallExpression methodCall, BuildInfo buildInfo)
+		{
+			return methodCall.IsQueryable("Delete");
+		}
+
+		protected override IBuildContext BuildMethodCall(ExpressionBuilder builder, MethodCallExpression methodCall, BuildInfo buildInfo)
+		{
+			var sequence = builder.BuildSequence(new BuildInfo(buildInfo, methodCall.Arguments[0]));
+
+			if (methodCall.Arguments.Count == 2)
+				sequence = builder.BuildWhere(buildInfo.Parent, sequence, (LambdaExpression)methodCall.Arguments[1].Unwrap(), false);
+
+			sequence.SqlQuery.QueryType = QueryType.Delete;
+
+			// Check association.
+			//
+			var ctx = sequence as SelectContext;
+
+			if (ctx != null && ctx.IsScalar)
+			{
+				var res = ctx.IsExpression(null, 0, RequestFor.Association);
+
+				if (res.Result && res.Context is TableBuilder.AssociatedTableContext)
+				{
+					var atc = (TableBuilder.AssociatedTableContext)res.Context;
+					sequence.SqlQuery.Delete.Table = atc.SqlTable;
+				}
+				else
+				{
+					res = ctx.IsExpression(null, 0, RequestFor.Table);
+
+					if (res.Result && res.Context is TableBuilder.TableContext)
+					{
+						var tc = (TableBuilder.TableContext)res.Context;
+
+						if (sequence.SqlQuery.From.Tables.Count == 0 || sequence.SqlQuery.From.Tables[0].Source != tc.SqlQuery)
+							sequence.SqlQuery.Delete.Table = tc.SqlTable;
+					}
+				}
+			}
+
+			return new DeleteContext(buildInfo.Parent, sequence);
+		}
+
+		protected override SequenceConvertInfo Convert(
+			ExpressionBuilder builder, MethodCallExpression methodCall, BuildInfo buildInfo, ParameterExpression param)
+		{
+			return null;
+		}
+
+		class DeleteContext : SequenceContextBase
+		{
+			public DeleteContext(IBuildContext parent, IBuildContext sequence)
+				: base(parent, sequence, null)
+			{
+			}
+
+			public override void BuildQuery<T>(Query<T> query, ParameterExpression queryParameter)
+			{
+				query.SetNonQueryQuery();
+			}
+
+			public override Expression BuildExpression(Expression expression, int level)
+			{
+				throw new InvalidOperationException();
+			}
+
+			public override SqlInfo[] ConvertToSql(Expression expression, int level, ConvertFlags flags)
+			{
+				throw new InvalidOperationException();
+			}
+
+			public override SqlInfo[] ConvertToIndex(Expression expression, int level, ConvertFlags flags)
+			{
+				throw new InvalidOperationException();
+			}
+
+			public override IsExpressionResult IsExpression(Expression expression, int level, RequestFor requestFlag)
+			{
+				throw new InvalidOperationException();
+			}
+
+			public override IBuildContext GetContext(Expression expression, int level, BuildInfo buildInfo)
+			{
+				throw new InvalidOperationException();
+			}
+		}
+	}
+}