Document how to install your own custom collation for use in sorting and
comparing string data values.
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Key: DERBY-4627
URL: https://issues.apache.org/jira/browse/DERBY-4627
Project: Derby
Issue Type: Improvement
Components: Documentation
Affects Versions: 10.6.0.0
Reporter: Rick Hillegas
The Developer's Guide suggests that you are limited to the collations shipped
with the JRE. Consider, for instance, this sentence in the section titled
"Character-based collation in Derby":
"Derby currently supports only running those rules that can be loaded
dynamically from the running JVM based on the territory attribute. Overrides to
these rules by the user are not supported."
This is misleading. A long time ago, Knut wrote a blog explaining how to write
your own custom collation, plug it into the JRE, and then use it on string data
stored in Derby: http://blogs.sun.com/kah/entry/user_defined_collation_in_apache
This is a very useful capability of Derby. We should document it.
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