private static string GetExpression(string type, string propName, object value, bool quoted)
{
switch (type.ToLower())
{
case "equals":
case "eq":
return(QueryMaker.EqualsTo(propName, value, quoted));
case "notequals":
case "neq":
case "ne":
return(QueryMaker.NotEquals(propName, value, quoted));
case "contains":
case "c":
return(QueryMaker.Contains(propName, value));
case "notcontains":
case "doesnotcontain":
case "dnc":
case "nc":
return(QueryMaker.NotContains(propName, value));
case "startswith":
case "sw":
return(QueryMaker.StartsWith(propName, value));
case "notstartswith":
case "nsw":
return(QueryMaker.NotStartsWith(propName, value));
case "endswith":
case "ew":
return(QueryMaker.EndsWith(propName, value));
case "notendswith":
case "new":
return(QueryMaker.NotEndsWith(propName, value));
case "isempty":
case "ie":
return(QueryMaker.IsEmpty(propName));
case "isnotempty":
case "ino":
return(QueryMaker.IsNotEmpty(propName));
case "isnull":
case "in":
return(QueryMaker.IsNull(propName));
case "isnotnull":
case "inn":
return(QueryMaker.IsNotNull(propName));
case "greaterthan":
case "gt":
return(QueryMaker.GreaterThan(propName, value, quoted));
case "lessthan":
case "lt":
return(QueryMaker.LessThan(propName, value, quoted));
case "greaterthanorequals":
case "gtoe":
case "gte":
return(QueryMaker.GreaterThanOrEquals(propName, value, quoted));
case "lessthanorequals":
case "ltoe":
case "lte":
return(QueryMaker.LessThanOrEquals(propName, value, quoted));
case "istrue":
case "it":
return(QueryMaker.IsTrue(propName));
case "isfalse":
case "if":
return(QueryMaker.IsFalse(propName));
default:
return("");
}
}