Hello,
I am working with a content-heavy database application that uses OJB 1.0RC5
on SQL Server 2000. Because the content is part of the value-proposition
for customers to purchase our application, we would like a means of easily
identifying what (template) data came from us versus what data was created
by customers during their use of the application.
The hope is that we can have a primarykey of a VARCHAR type that contains
the hexadecimal format of the uniqueID issued by the HighLow sequence
manager implementation. For example, our customer records would begin at
$F0000000 for records that they create. Everything from $00000000 to
$EFFFFFFF would be part of our template data.
I have the source code to the version of OJB that we're using, but I am
unsure where I should make the change? Can I get away with just
sub-classing SequenceManagerHighLowImpl and overriding the getUniqueValue
method?
Here's the implementation that I had been thinking of...
public Object getUniqueValue(FieldDescriptor field) throws
SequenceManagerException {
Object value = super.getUniqueValue(field);
if ("VARCHAR".equals(field.getColumnType())) {
value = Long.toString(Long.parseLong(value.toString()), 16);
}
return value;
}
There are tables in the application which use the hi/lo manager for
legitimate integer unique ids; I don't want to interfere with that
operation.
Any comments?
Thanks in advance for your help.
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