Github user ajs6f commented on a diff in the pull request:
https://github.com/apache/jena/pull/123#discussion_r50540841
--- Diff:
jena-text/src/main/java/org/apache/jena/query/text/assembler/TextIndexLuceneAssembler.java
---
@@ -123,10 +141,35 @@ public TextIndex open(Assembler a, Resource root,
Mode mode) {
config.setMultilingualSupport(isMultilingualSupport);
config.setValueStored(storeValues);
- return TextDatasetFactory.createLuceneIndex(directory, config)
;
+ TextIndexLucene index =
TextDatasetFactory.createLuceneIndex(directory, config) ;
+ index.addEventHandler(TextIndexLucene.Event.CLOSED,
+ ( i ) -> ramDirectories.remove(root));
+ return index;
} catch (IOException e) {
IO.exception(e) ;
return null ;
}
}
+protected static class RAMDirectoryMap {
+
+ private static WeakHashMap<RDFNode,
WeakReference<RAMDirectory>> map = new WeakHashMap<RDFNode,
WeakReference<RAMDirectory>>();
+
+ protected synchronized RAMDirectory get(RDFNode node) {
+ WeakReference<RAMDirectory> ref = map.get(node);
+ if (ref == null)
+ return null;
+ RAMDirectory result = ref.get();
+ if (result == null)
+ map.put(node, null);
+ return result;
+ }
+
+ protected synchronized void put(RDFNode node, RAMDirectory
directory) {
+ map.put(node, new
WeakReference<RAMDirectory>(directory));
--- End diff --
Could be little shorter with `new WeakReference<>(directory)`.
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