Github user ajs6f commented on a diff in the pull request: https://github.com/apache/jena/pull/123#discussion_r50548291 --- Diff: jena-text/src/main/java/org/apache/jena/query/text/TextDatasetFactory.java --- @@ -191,5 +213,50 @@ public static DatasetGraph createSolrIndex(DatasetGraph base, SolrServer server, TextIndex index = createSolrIndex(server, entMap) ; return create(base, index, true) ; } + + protected static class LuceneIndexMap { + + private static HashMap<Object, WeakReference<TextIndex>> map = new HashMap<Object, WeakReference<TextIndex>>(); + + protected synchronized TextIndex get(Directory directory) { --- End diff -- Fair enough. I will try and sketch something quickly and if you want (if you think it is clearer), you can use it, or not.
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