1. getRefCount()
2. No
Mossaab Bagdouri <bagdouri_moss...@yahoo.fr> schrieb:
>Hi,
>
>I've just migrated my webapp from Lucene 3.6 to 4.0-BETA. My 2 indexes
>are
>updated every couple of minutes by a batch. The webapp searcher needs
>to
>get refreshed whenever this happens. In 3.6, I was doing it this way:
>
>private IndexSearcher getIndexSearcher() {
> try {
> if (is == null || !is.getIndexReader().isCurrent()) {
> if (is != null) {
> is.close();
> }
> IndexReader readers[] = new IndexReader[2];
> for (int i = 0; i < 2; i++) {
> readers[i] = IndexReader.open(MyFSDirectories.get(i));
> }
> is = new IndexSearcher(new MultiReader(readers));
> }
> } catch (Exception e) {
> e.printStackTrace();
> }
> return is;
> }
>
>Now that the API changed in 4.0-BETA. I'm doing it this odd way:
>
>private IndexSearcher getIndexSearcher() {
> try {
> boolean refresh = false;
> if (is == null) {
> refresh = true;
> } else {
> MultiReader ir = ((MultiReader) is.getIndexReader());
> List<DirectoryReader> list = (List<DirectoryReader>)
>ir.getSequentialSubReaders();
> try {
> if (!list.get(0).isCurrent() ||
>!list.get(1).isCurrent()) {
> refresh = true;
> }
> } catch (Exception e) {
> e.printStackTrace();
> refresh = true;
> }
>
> }
> if (refresh) {
> if (is != null) {
> ((MultiReader) is.getIndexReader()).close();
> }
> DirectoryReader readers[] = new DirectoryReader[2];
> for (int i = 0; i < 2; i++) {
> readers[i] =
>DirectoryReader.open(MyFSDirectories.get(i));
> }
> is = new IndexSearcher(new MultiReader(readers));
> }
> } catch (Exception e) {
> e.printStackTrace();
> }
> return is;
> }
>
>The problem is that sometimes isCurrent() returns an exception
>indicating
>that the underlying IndexReader is closed.
>
>My questions are:
>1. How can I verify of the IndexReader is open before calling
>isCurrent();
>2. Is there a better way to deal with MultiReaders?
>
>Regards,
>Mossaab
--
Uwe Schindler
H.-H.-Meier-Allee 63, 28213 Bremen
http://www.thetaphi.de
