Uwe Schindler created LUCENE-7727:
-------------------------------------
Summary: Replace EOL'ed pegdown by flexmark-java for Java 9
compatibility
Key: LUCENE-7727
URL: https://issues.apache.org/jira/browse/LUCENE-7727
Project: Lucene - Core
Issue Type: Improvement
Components: general/build
Reporter: Uwe Schindler
The documentation tasks use a library called "pegdown" to convert Markdown to
HTML. Unfortunately, the developer of pegdown EOLed it and points the users to
a faster replacement: flexmark-java (https://github.com/vsch/flexmark-java).
This would not be important for us, if pegdown would work with Java 9, but it
is also affected by the usual "setAccessible into private Java APIs" issue (see
my talk at FOSDEM: https://fosdem.org/2017/schedule/event/jigsaw_challenges/).
The migration should not be too hard, its just a bit of Groovy Code rewriting
and dependency changes.
This is the pegdown problem:
{noformat}
Caused by: java.lang.RuntimeException: Could not determine whether class
'org.pegdown.Parser$$parboiled' has already been loaded
at org.parboiled.transform.AsmUtils.findLoadedClass(AsmUtils.java:213)
at
org.parboiled.transform.ParserTransformer.transformParser(ParserTransformer.java:35)
at org.parboiled.Parboiled.createParser(Parboiled.java:54)
... 50 more
Caused by: java.lang.reflect.InaccessibleObjectException: Unable to make
protected final java.lang.Class
java.lang.ClassLoader.findLoadedClass(java.lang.String) accessible: module
java.base does not "opens java.lang" to unnamed module @551b6736
at
java.base/java.lang.reflect.AccessibleObject.checkCanSetAccessible(AccessibleObject.java:335)
at
java.base/java.lang.reflect.AccessibleObject.checkCanSetAccessible(AccessibleObject.java:278)
at
java.base/java.lang.reflect.Method.checkCanSetAccessible(Method.java:196)
at java.base/java.lang.reflect.Method.setAccessible(Method.java:190)
at org.parboiled.transform.AsmUtils.findLoadedClass(AsmUtils.java:206)
... 52 more
{noformat}
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