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From "Rick Hillegas (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (DERBY-6998) Make it possible to build Derby cleanly using JDK 10
Date Mon, 28 May 2018 22:25:00 GMT

    [ https://issues.apache.org/jira/browse/DERBY-6998?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16492940#comment-16492940

Rick Hillegas commented on DERBY-6998:

Attaching derby-6998-01-ab-tightenReturnType.diff. This patch tightens a generic type declaration
so that the warning no longer appears. This patch also turns off the echoproperties call in
the master build script. No-one has taken advantage of the extra output and it is overwhelming.
I will run tests on both Java 9 and Java 10. 

Touches the following file:


M       build.xml

Turn off the echoproperties diagnostic.


M       java/build/org/apache/derbyBuild/lastgoodjarcontents/insane.derbyTesting.jar.lastcontents
M       java/build/org/apache/derbyBuild/lastgoodjarcontents/sane.derbyTesting.jar.lastcontents
M       java/build/org/apache/derbyBuild/lastgoodjarcontents/sane.derbytools.jar.lastcontents
M       java/testing/org/apache/derbyTesting/functionTests/harness/JavaVersionHolder.java
A       java/testing/org/apache/derbyTesting/functionTests/harness/jdk100.java

Make the tests recognize JDK 10.


M       java/engine/org/apache/derby/iapi/types/SqlXmlUtil.java

Fix the new warning raised when we compile this class using JDK 10.

> Make it possible to build Derby cleanly using JDK 10
> ----------------------------------------------------
>                 Key: DERBY-6998
>                 URL: https://issues.apache.org/jira/browse/DERBY-6998
>             Project: Derby
>          Issue Type: Bug
>          Components: Build tools
>    Affects Versions:
>            Reporter: Rick Hillegas
>            Priority: Major
>         Attachments: derby-6998-01-ab-tightenReturnType.diff
> When I build Derby using JDK 10, I get the following warning:
> {noformat}
>     [javac] /Users/rhillegas/derby/mainline/trunk/java/engine/org/apache/derby/iapi/types/SqlXmlUtil.java:728:
warning: [unchecked] getPrefixes(String) in NullNamespaceContext implements getPrefixes(String)
in NamespaceContext
>     [javac]         public Iterator getPrefixes(String namespaceURI) {
>     [javac]                         ^
>     [javac]   return type requires unchecked conversion from Iterator to Iterator<String>
>     [javac] 1 warning
> {noformat}
> I will clean this up.

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