I know I have posted this before. I should just create a patch, but here's what
I add to the setter in my Velocity EOGenerator _Entity template that will
enforce scale on BigDecimal:
public void set${attribute.capitalizedName}($attribute.javaClassName
${attribute.name}) {
#if ($attribute.javaClassName == "java.math.BigDecimal")
if (${attribute.name} != null) {
${attribute.name} =
${attribute.name}.setScale(${attribute.scale}, RoundingMode.HALF_UP);
}
#end
This will force all set values to conform to the scale defined in the EOModel,
which should be set to match the DB.
Dave
On Dec 9, 2009, at 12:01 PM, Jon Nolan wrote:
> Kieran Kelleher wrote:
>> Am I dreaming in thinking that I saw a discussion at some time in the past
>> that there is some flaw with using BigDecimals as reliable* optimistic
>> locking attributes? ..... or was that just NSTimestamps and float/double
>> type values? .....
> Kieran,
>
> I seem to remember some trouble with this in the past involving precision
> but, like you, I don't remember if it extended to BigDecimal. Doesn't seem
> like it should given what that class is all about.
> I've given up on struggling with various locking attribute types and have
> gone with locking on primary key and an int/long called serialNumber. Then I
> have something like this in the eo class.
>
> public void willInsert() {
> super.willInsert();
> setSerialNumber(0);
> }
> public void willUpdate() {
> super.willUpdate();
> setSerialNumber(serialNumber().intValue() + 1);
> }
>
> I have zero failures with this approach and perhaps just as importantly zero
> headaches. The only (slight) negative is a bit of DB bloat.
>
> Jon
>
>
> _______________________________________________
> Do not post admin requests to the list. They will be ignored.
> Webobjects-dev mailing list ([email protected])
> Help/Unsubscribe/Update your Subscription:
> http://lists.apple.com/mailman/options/webobjects-dev/webobjects%40avendasora.com
>
> This email sent to [email protected]
>
>
David Avendasora
Senior Software Engineer
K12, Inc.
*****
WebObjects Documentation Wiki :
http://wiki.objectstyle.org/confluence/display/WO/
*****
WebObjects API:
http://developer.apple.com/legacy/mac/library/documentation/MacOSXServer/Reference/WO54_Reference/index.html
*****
_______________________________________________
Do not post admin requests to the list. They will be ignored.
Webobjects-dev mailing list ([email protected])
Help/Unsubscribe/Update your Subscription:
http://lists.apple.com/mailman/options/webobjects-dev/archive%40mail-archive.com
This email sent to [email protected]
