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https://issues.apache.org/jira/browse/DERBY-6809?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14551211#comment-14551211
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Rick Hillegas commented on DERBY-6809:
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Hi Sagar,
Derby's modules are classes which implement the
org.apache.derby.iapi.services.monitor.ModuleControl interface. These modules
are listed in java/engine/org/apache/derby/modules.properties. Some of these
modules are platform-specific. The header comment in that file is a little
stale and a little cryptic, but it explains the mechanism by which Derby
decides which version of a module to load. I recommend following the pattern
used by the 2 implementations of the JDBC driver module (InternalDriver and
Driver42).
If you are interested in sorting, then I recommend that you start out trying to
implement a Java 8 version of the SortFactory module. Right now there is only
one, platform-agnostic version of that module. It is described in
modules.properties by these lines:
derby.module.access.sort=org.apache.derby.impl.store.access.sort.ExternalSortFactory
cloudscape.config.access.sort=all
I'm a little rusty here, but I think that what you need to do is change those
lines to the following in order to say that ExternalSortFactory is used for
Java 6 and 7...
derby.module.access.sort6=org.apache.derby.impl.store.access.sort.ExternalSortFactory
derby.env.jdk.access.sort6=7
cloudscape.config.access.sort6=derby
...and then add another block of directives to describe the Java 8 sort factory
which you are going to write...
derby.module.access.sort8=org.apache.derby.impl.store.access.sort.MyJava8SortFactory
derby.env.jdk.access.sort8=9
cloudscape.config.access.sort8=derby
You may have to play around with this. It's a little tricky.
Hope this helps,
-Rick
> Java 1.8 feature use
> --------------------
>
> Key: DERBY-6809
> URL: https://issues.apache.org/jira/browse/DERBY-6809
> Project: Derby
> Issue Type: Improvement
> Components: Network Server
> Affects Versions: 11.0.0.0
> Reporter: sagar
>
> Suggestion ...
> Is it possible to auto modify the existing source code using tools like
> Netbeans, and take advantage of the new features in JDK 1.8 for better
> multiuser performance and better utilization of current day multicore
> processors?
> Plainly put, can we have from 11.0 onwards a version of derby which takes
> advantage of the advancements and new features in java 1.8 ...
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