Dynamic Autosearch

rbuser

Hello,

Why are there two enumerated types with the same meaning ?

TppSearchOperatorType = (soEqual, soNotEqual,
soLessThan, soLessThanOrEqualTo,
soGreaterThan, soGreaterThanOrEqualTo,
soLike, soNotLike,
soBetween, soNotBetween,
soInList, soNotInList,
soBlank, soNotBlank);

TdaCriteriaOperatorType = (dacoEqual, dacoNotEqual,
dacoLessThan, dacoLessThanOrEqualTo,
dacoGreaterThan, dacoGreaterThanOrEqualTo,
dacoLike, dacoNotLike,
dacoBetween, dacoNotBetween,
dacoInList, dacoNotInList,
dacoBlank, dacoNotBlank);

I am writing a procedure that set the value of an autosearch field at
runtime.
If the autosearch field does not exist my procedure can, optionally,
create it.
When setting the as field operator I need to use TppSearchOperatorType
when creating the as field instead I need to use TdaCriteriaOperatorType
(since I use TdaSQLBuilder.SearchCriteria.AddAutoSearch, the version
with the enum)

Is it safe to simply cast one enum into the other, since they have the
same content?

Thanks bye
Nicola

rbuser

I just saw that I can't use

function AddAutoSearch(const aTableNameOrAlias: String; const
aFieldNameOrAlias: String; aOperator: TdaCriteriaOperatorType; aValue:
String): TdaCriteria; virtual; overload;

because it is protected ! (I was fooled by the help...)

So I must use this version (with operator in string format)


function AddAutoSearch(const aTableNameOrAlias: String; const
aFieldNameOrAlias: String; const aOperator: String; const aValue:
String): TdaCriteria; virtual; overload;

Given that I would need now a function to convert the operator string
in a TppSearchOperatorType...
well I can figure out myself but if was it already made.... better

Thanks bye
Nicola

nardmoseley

Ok, great.

I do not why the TppSearchOperatorType and TdaCriteriaOperatorType were
created instead of just a single enum type. I think a direct typecast would
work, if not an indirect one would. An enum type always has an inderlying
ordinal value. You could convert one type to its ordinal value and then
convert the ordinal value to the other enum type.



--
Nard Moseley
Digital Metaphors Corporation
http://www.digital-metaphors.com