Skip Updates fields for Update queries and ignore RowVersion in updates

Author: mythz

src/ServiceStack.OrmLite.SqlServer/SqlServerExpression.cs

@@ -14,7 +14,10 @@ public override string ToUpdateStatement(T item, bool excludeDefaults = false)
 
             foreach (var fieldDef in ModelDef.FieldDefinitions)
             {
+                if (fieldDef.ShouldSkipUpdate()) continue;
+                if (fieldDef.IsRowVersion) continue;
                 if (UpdateFields.Count > 0 && !UpdateFields.Contains(fieldDef.Name) || fieldDef.AutoIncrement) continue; // added
+
                 var value = fieldDef.GetValue(item);
                 if (excludeDefaults && (value == null || value.Equals(value.GetType().GetDefaultValue()))) continue; //GetDefaultValue?
 

src/ServiceStack.OrmLite/Expressions/SqlExpression.cs

@@ -24,7 +24,7 @@ public abstract partial class SqlExpression<T> : ISqlExpression
         IList<string> insertFields = new List<string>();
 
         private string sep = string.Empty;
-        private bool useFieldName = false;
+        protected bool useFieldName = false;
         private ModelDefinition modelDef;
         public bool PrefixFieldWithTableName { get; set; }
         public bool WhereStatementWithoutWhereString { get; set; }
@@ -659,7 +659,10 @@ public virtual string ToUpdateStatement(T item, bool excludeDefaults = false)
 
             foreach (var fieldDef in modelDef.FieldDefinitions)
             {
+                if (fieldDef.ShouldSkipUpdate()) continue;
+                if (fieldDef.IsRowVersion) continue;
                 if (updateFields.Count > 0 && !updateFields.Contains(fieldDef.Name)) continue; // added
+
                 var value = fieldDef.GetValue(item);
                 if (excludeDefaults && (value == null || value.Equals(value.GetType().GetDefaultValue()))) continue; //GetDefaultValue?
 

src/ServiceStack.OrmLite/Expressions/WriteExtensions.cs

@@ -127,7 +127,7 @@ public static int Update<T>(this IDbCommand dbCmd, object updateOnly, Expression
             {
                 var fieldDef = fields.FirstOrDefault(x =>
                     string.Equals(x.Name, setField.Name, StringComparison.OrdinalIgnoreCase));
-                if (fieldDef == null) continue;
+                if (fieldDef == null || fieldDef.ShouldSkipUpdate()) continue;
 
                 if (sql.Length > 0)
                     sql.Append(", ");