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<p>Hi,</p>
<p>I cannot confirm this. Apache Lucene (just released today in
version 10.0.0, but also previous veersion 9.12.0) can open
indexes just fine, both with preview enabled or not. I modified
the start script of the "Luke" GUI to use classpath mode and add
the "--enable-preview" flag. All variants work (SPI from declared
module-info.class SPIs or using META-INF/services).</p>
<p>If ServiceLoader won't work, Lucene would fails to open any
indexes.</p>
<p>To test, just download Apache Lucene, put JDK 23 as first entry
on your $PATH and start bin/luke.sh. To test other variants change
the script file by changing to use classpath mode (by invoking
"org.apache.lucene.luke.app.desktop.LukeMain" class directly and
change module-path to classpath with "/*").<br>
</p>
<p>Uwe<br>
</p>
<div class="moz-cite-prefix">Am 13.10.2024 um 13:53 schrieb Robert
Scholte:<br>
</div>
<blockquote type="cite"
cite="mid:012901db1d66$8e348d40$aa9da7c0$@apache.org">
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<p class="MsoNormal">Hi,<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span lang="EN-US">It seems there’s a
change in the ServiceLoader, and it looks like regression to
me.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">I’ve created a small
project to reproduce it (I can provide it if wanted and
confirmed this is indeed a bug).<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">What it basically does
is just: <o:p></o:p></span></p>
<p class="MsoNormal" style="text-indent:35.4pt"><span
lang="EN-US">ServiceLoader.load(Car.class).findFirst().orElseThrow();<o:p></o:p></span></p>
<p class="MsoNormal" style="text-indent:35.4pt"><span
lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">This succeeds with
OpenJDK 22 (with and without preview enabled flag)<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">It also succeeds with
OpenJDK 23 without the preview flag.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">However, when adding the
preview flag I get:<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">java.util.NoSuchElementException:
No value present<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> at
java.base/java.util.Optional.orElseThrow(Optional.java:377)<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> at
nl.sourcegrounds.serviceloader.tck.CarTest.<init>(CarTest.java:16)<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Anyone who can already
explain this with this small amount of information?<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Thanks,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Robert Scholte<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">These are the details
for both versions (Windows OS)<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">openjdk version "22"
2024-03-19<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">OpenJDK Runtime
Environment (build 22+36-2370)<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">OpenJDK 64-Bit Server VM
(build 22+36-2370, mixed mode, sharing)<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">openjdk version "23"
2024-09-17<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">OpenJDK Runtime
Environment (build 23+37-2369)<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">OpenJDK 64-Bit Server VM
(build 23+37-2369, mixed mode, sharing)<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
</div>
</blockquote>
<pre class="moz-signature" cols="72">--
Uwe Schindler
<a class="moz-txt-link-abbreviated" href="mailto:uschindler@apache.org">uschindler@apache.org</a>
ASF Member, Member of PMC and Committer of Apache Lucene and Apache Solr
Bremen, Germany
<a class="moz-txt-link-freetext" href="https://lucene.apache.org/">https://lucene.apache.org/</a>
<a class="moz-txt-link-freetext" href="https://solr.apache.org/">https://solr.apache.org/</a></pre>
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