[
https://issues.apache.org/jira/browse/OPENNLP-1520?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17794160#comment-17794160
]
Richard Zowalla commented on OPENNLP-1520:
------------------------------------------
For Indonesian, I took
[https://raw.githubusercontent.com/snowballstem/snowball-data/master/indonesian/voc.txt]
and did a quick test:
{code:java}
@Test
void testIndonesian2() {
try {
// Replace "https://example.com"; with the URL you want to fetch
String urlString =
"https://raw.githubusercontent.com/snowballstem/snowball-data/master/indonesian/voc.txt";;
URL url = new URL(urlString);
// Open a connection to the URL
URLConnection urlConnection = url.openConnection();
// Create a BufferedReader to read the content of the URL
try (BufferedReader bufferedReader = new BufferedReader(
new InputStreamReader(urlConnection.getInputStream()))) {
// Read the content of the URL into a StringBuilder
StringBuilder content = new StringBuilder();
String line;
while ((line = bufferedReader.readLine()) != null) {
content.append(line);
content.append(System.lineSeparator());
}
SnowballStemmer stemmer = new SnowballStemmer(ALGORITHM.INDONESIAN);
for(String token : content.toString().split("\n")) {
stemmer.stem(token);
}
}
} catch (IOException e) {
e.printStackTrace();
}
}
{code}
This list doesn't trigger the exception because the related methods are
"protected".
> Generated Java code for stemmers is broken, and should be re-generated
> ----------------------------------------------------------------------
>
> Key: OPENNLP-1520
> URL: https://issues.apache.org/jira/browse/OPENNLP-1520
> Project: OpenNLP
> Issue Type: Bug
> Components: Stemmer
> Affects Versions: 2.3.0, 2.3.1
> Reporter: Jon Marius Venstad
> Assignee: Martin Wiesner
> Priority: Major
> Fix For: 2.3.2
>
>
> The recursive stemming, which seems hard to actually trigger, but which is
> the intended usage of the {{methodObject and method}} in the {{Among}} class
> (called reflectively) is completely broken. First off, it tries to invoke a
> private method from outside the class (from a parent class, the
> {{{}SnowballProgram{}}}), which fails with an illegal access exception; if
> that worked, it would also have invoked _all_ such method calls on the
> {_}same, shared, static object{_}—not on the relevant stemmer instance.
> This was fixed 8 years ago, but it looks like the generated code in the
> opennlp-tools is 10 years old. I would urge you to re-generate that code.
>
> Commit that fixed the Java code generation:
> [https://github.com/snowballstem/snowball/commit/0f9d3d64ab965447a7f638b8ededc924f3efca75]
>
> Relevant sample stemmer with broken Java:
> [https://github.com/apache/opennlp/blob/main/opennlp-tools/src/main/java/opennlp/tools/stemmer/snowball/finnishStemmer.java]
>
> Stack trace showing illegal reflection access:
>
> {noformat}
> 2023-10-26 23:21:44.200 class opennlp.tools.stemmer.snowball.SnowballProgram
> cannot access a member of class opennlp.tools.stemmer.snowball.finnishStemmer
> with modifiers "private"
> exception=java.lang.IllegalAccessException: class
> opennlp.tools.stemmer.snowball.SnowballProgram cannot access a member of
> class opennlp.tools.stemmer.snowball.finnishStemmer with modifiers "private"
> at
> java.base/jdk.internal.reflect.Reflection.newIllegalAccessException(Reflection.java:392)
>
> at
> java.base/java.lang.reflect.AccessibleObject.checkAccess(AccessibleObject.java:674)
>
> at java.base/java.lang.reflect.Method.invoke(Method.java:560)
> at
> opennlp.tools.stemmer.snowball.SnowballProgram.find_among_b(SnowballProgram.java:353)
>
> at
> opennlp.tools.stemmer.snowball.finnishStemmer.r_case_ending(finnishStemmer.java:480)
>
> at
> opennlp.tools.stemmer.snowball.finnishStemmer.stem(finnishStemmer.java:1003)
> at
> opennlp.tools.stemmer.snowball.SnowballStemmer.stem(SnowballStemmer.java:131)
> at
> com.yahoo.language.opennlp.OpenNlpTokenizer.processToken(OpenNlpTokenizer.java:64)
>
> at
> com.yahoo.language.opennlp.OpenNlpTokenizer.lambda$tokenize$0(OpenNlpTokenizer.java:54)
>
> at
> com.yahoo.language.simple.SimpleTokenizer.tokenize(SimpleTokenizer.java:74)
> at
> com.yahoo.language.opennlp.OpenNlpTokenizer.tokenize(OpenNlpTokenizer.java:54)
>
> at
> com.yahoo.vespa.indexinglanguage.linguistics.LinguisticsAnnotator.annotate(LinguisticsAnnotator.java:76)
> ...{noformat}
>
>
> Best, Jon Marius Venstad, developer at [vespa.ai|http://vespa.ai/]
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