I have spent some time exploring the code to see how the Locale info can be passed to a datatype's locale sensitive methods. What I am finding is that these locale sensitive methods, for instance setValue method in datatype like SQLTime, get called from many different places in the Derby code. Now, I might be single tracking my thoughts here, but it seems to me that context stack might be the right way for these different callers to get handle of locale info and pass it to the setValue methods. Maybe there are some other solutions too which I am not able to visulaize at this point.
I will keep looking more for other ways of getting handle of locale info to pass on to locale sensitive methods but am I missing some other easier possible solution to pass the locale info to locale sensitivie methods of datatypes? Mamta On 3/5/07, Daniel John Debrunner <[EMAIL PROTECTED]> wrote:
Mamta Satoor wrote: > Another solution that I have been thinking of is to have the locale > dependents datatypes by aware of their locale so they can use that > locale information in their locale sensitive methods. So, for eg, in the > ij script example that we are discussing, SQLTimestamp in it's > constructor should get the Locale/LocaleFinder/some other effective > object (copying Dan's line literally here) and locale sensitive methods > like setValue can simply find the locale info in it's class itself. > > So, in other words, rather than passing the locale info to the locale > sensitive methods, pass it to the locale sensitive datatype in it's > constructor and use that locale info in all the locale sensitive methods > in that datatype class. I think there are a couple of issues with this approach: - the size in memory of each instance of a value (e.g. SQLTimestamp) will increase. Passing in the value will only increase a single object (e.g. the activation or language connection context). Imagine a query that performs a lot of manipulation of timestamp values. - How to handling reading the value from disk? Would information about the locale need to be stored on disk to allow the object to be recreated correctly? Thus increasing on-disk size? (and upgrade issues?). Dan. Dan.
