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From "Knut Anders Hatlen (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (DERBY-6857) Deprecate support for building Derby under JDKs 6 and 7
Date Fri, 05 Feb 2016 19:16:39 GMT

     [ https://issues.apache.org/jira/browse/DERBY-6857?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Knut Anders Hatlen updated DERBY-6857:
--------------------------------------
    Attachment: new-byte-codes.diff

I noticed that the build failed (classlister raised a ClassFormatError) if I added a lambda
expression to the code. It happens because some new byte codes have been added to the Java
class format in the latest releases. ClassInvestigator doesn't understand those byte codes
and raises an error which makes classlister fail.

The attached patch teaches ClassInvestigator how to handle the new byte codes, and it transforms
an inner class into a lambda expression to verify that it works.

> Deprecate support for building Derby under JDKs 6 and 7
> -------------------------------------------------------
>
>                 Key: DERBY-6857
>                 URL: https://issues.apache.org/jira/browse/DERBY-6857
>             Project: Derby
>          Issue Type: Bug
>          Components: Build tools
>    Affects Versions: 10.13.0.0
>            Reporter: Rick Hillegas
>         Attachments: ClassReferenceReader.java, Windows-sane-TypeId.class, classReferenceComparison.txt,
derby-6857-01-aa-remove6and7.diff, derby-6857-02-aa-cleanupOldJdks.diff, derby-6857-03-aa-minimumVersion.diff,
derby-6857-04-aa-pruneConstantClasses.diff, jardriftcheck.diff, mac-derby-jar-verbose.txt,
mac-sane-TypeId.class, new-byte-codes.diff, windows-derby-jar-verbose.txt
>
>
> The community voted to stop supporting Java 6 and 7 as of release 10.13. See the 2015-09-12
entry here: http://wiki.apache.org/db-derby/VoteResults. We no longer need to support building
Derby with those JDKs. This issue tracks changes needed to remove that support and simplify
the build.



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