Refactor

Author: SergeiPavlov

Extensions/Xtensive.Orm.BulkOperations/Internals/AddValueContext.cs

@@ -1,4 +1,5 @@
-using System.Linq.Expressions;
+using System.Linq.Expressions;
+using Xtensive.Linq;
 using Xtensive.Orm.Model;
 using Xtensive.Sql.Dml;
 
@@ -16,5 +17,10 @@ internal class AddValueContext
     public FieldInfo Field { get; set; }
 
     public bool SubqueryExists { get; set; }
+
+    public object EvalLambdaBody() =>
+      Lambda.Body is ConstantExpression ce
+        ? ce.Value
+        : FastExpression.Lambda(Lambda.Body).Compile().DynamicInvoke();
   }
-}
+}

Extensions/Xtensive.Orm.BulkOperations/Internals/SetOperation.cs

@@ -146,10 +146,7 @@ private void AddComputedExpression(AddValueContext addContext)
     private void AddConstantValue(AddValueContext addContext)
     {
       SqlTableColumn column = SqlDml.TableColumn(addContext.Statement.Table, addContext.Field.Column.Name);
-      var constant =
-        addContext.Lambda.Body is ConstantExpression ce
-          ? ce.Value
-          : FastExpression.Lambda(addContext.Lambda.Body).Compile().DynamicInvoke();
+      var constant = addContext.EvalLambdaBody();
       SqlExpression value;
       if (constant == null) {
         value = SqlDml.Null;
@@ -227,9 +224,7 @@ private void AddEntityValue(AddValueContext addContext)
         }
       }
       i = -1;
-      var entity = (IEntity) (addContext.Lambda.Body is ConstantExpression ce
-          ? ce.Value
-          : FastExpression.Lambda(addContext.Lambda.Body).Compile().DynamicInvoke());
+      var entity = (IEntity)addContext.EvalLambdaBody();
 
       foreach (ColumnInfo column in addContext.Field.Columns) {
         i++;