Solr 9.2.1 custom plugin read values in solrconfig.xml

[elisabeth benoit]

Hello,

We have a solr custom plugin that we are actually migrating from solr 7.3.1
to solr 9.2.1.

In our solrconfig.xml we have the following line:


<valueSourceParser name="stopwordsw"
class="com.cie.lbs.solr.search.function.StopWordSubtypeValueSourceParser"
stopwords="le;la;les;"
startswith="3"
/>

The values stopwords and startswith are defined in solrconfig and we read
those values in the newSearcher function of a class implementing
SolrEventListener.

public void newSearcher(SolrIndexSearcher newSearcher,
SolrIndexSearcher currentSearcher) {
    SolrConfig config = newSearcher.getCore().getSolrConfig();
    String functionName = "//valueSourceParser[@name='" + this.name + "']";
    String[] stopWords = config.get(functionName +
"/@stopwords").txt().split(";") ;
    StopWordSubtypeLoader.startsWithValue = Integer.parseInt(config.get(
          functionName + "/@startswith").txt());
    StopWordSubtypeLoader.stopWords = new
HashSet<String>(Arrays.asList(stopWords));
    LOGGER.info("startsWithValue = " + StopWordSubtypeLoader.startsWithValue);
    LOGGER.info("stopwords = " + String.join(",",
StopWordSubtypeLoader.stopWords));
}

This was working in solr 7.3.1 but is not working in solr 9.2.1. When I put
a break point in newSearcher function in a unit test, it never gets there,
as if newSearcher is not called.

Did something change? I cant find an exemple of a similar case with solr 9.

Best regards,
Elisabeth