SessionProperty instead of Session Field

Author: SergeiPavlov

Orm/Xtensive.Orm/Orm/Linq/Materialization/ExpressionMaterializer.cs

@@ -267,7 +267,7 @@ internal override Expression VisitStructureFieldExpression(StructureFieldExpress
         return Expression.Convert(
           Expression.Call(
             WellKnownMembers.CreateStructure,
-            Expression.Field(itemMaterializationContextParameter, ItemMaterializationContext.SessionFieldInfo),
+            Expression.Property(itemMaterializationContextParameter, ItemMaterializationContext.SessionPropertyInfo),
             Expression.Constant(expression.Type),
             persistentTupleExpression),
           expression.Type);
@@ -313,7 +313,7 @@ internal override Expression VisitStructureExpression(StructureExpression expres
       return Expression.Convert(
         Expression.Call(
           WellKnownMembers.CreateStructure,
-          Expression.Field(itemMaterializationContextParameter, ItemMaterializationContext.SessionFieldInfo),
+          Expression.Property(itemMaterializationContextParameter, ItemMaterializationContext.SessionPropertyInfo),
           Expression.Constant(expression.Type),
           persistentTupleExpression),
         expression.Type);
@@ -330,7 +330,7 @@ internal override Expression VisitKeyExpression(KeyExpression expression)
         WellKnownMembers.Key.Create,
         Expression.Constant(context.Domain),
         Expression.Property(
-          Expression.Field(itemMaterializationContextParameter, ItemMaterializationContext.SessionFieldInfo),
+          Expression.Property(itemMaterializationContextParameter, ItemMaterializationContext.SessionPropertyInfo),
           WellKnownMembers.SessionNodeId),
         Expression.Constant(expression.EntityType),
         TypeReferenceAccuracyConstantExpression,

Orm/Xtensive.Orm/Orm/Linq/Materialization/ItemMaterializationContext.cs

@@ -17,7 +17,7 @@ internal readonly struct ItemMaterializationContext
     public static readonly MethodInfo IsMaterializedMethodInfo = WellKnownOrmTypes.ItemMaterializationContext.GetMethod(nameof(IsMaterialized));
     public static readonly MethodInfo GetEntityMethodInfo = WellKnownOrmTypes.ItemMaterializationContext.GetMethod(nameof(GetEntity));
     public static readonly MethodInfo MaterializeMethodInfo = WellKnownOrmTypes.ItemMaterializationContext.GetMethod(nameof(Materialize));
-    public static readonly System.Reflection.FieldInfo SessionFieldInfo = WellKnownOrmTypes.ItemMaterializationContext.GetField(nameof(Session));
+    public static readonly System.Reflection.PropertyInfo SessionPropertyInfo = WellKnownOrmTypes.ItemMaterializationContext.GetProperty(nameof(Session));
 
     public readonly MaterializationContext MaterializationContext;