added query convert strategy.

2018-02-12 03:30:55 -06:00
parent 8e88e13861
commit b1db7a3604
5 changed files with 47 additions and 17 deletions
@@ -80,5 +80,16 @@ namespace PoweredSoft.DynamicLinq.Helpers
            object convertedValue = TypeHelpers.ConvertFrom(memberType, value);
            return Expression.Constant(convertedValue);
        }
+
+        public static ConstantExpression ResolveConstant(Expression member, object value, QueryConvertStrategy convertStrategy)
+        {
+            if (convertStrategy == QueryConvertStrategy.LeaveAsIs)
+                return Expression.Constant(value);
+
+            if (convertStrategy == QueryConvertStrategy.ConvertConstantToComparedPropertyOrField)
+                return QueryableHelpers.GetConstantSameAsLeftOperator(member, value);
+
+            throw new NotSupportedException($"{convertStrategy} supplied is not recognized");
+        }
    }
 }