mirror of https://github.com/apache/lucene.git
LUCENE-6087: allow custom DirectoryReader to SearcherManager
git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1642887 13f79535-47bb-0310-9956-ffa450edef68
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@ -233,6 +233,9 @@ API Changes
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resourceDescription so its toString is sane (Robert Muir, Mike
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McCandless)
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* LUCENE-6087: Allow passing custom DirectoryReader to SearcherManager
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(Mike McCandless)
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Bug Fixes
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* LUCENE-5650: Enforce read-only access to any path outside the temporary
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@ -106,6 +106,25 @@ public final class SearcherManager extends ReferenceManager<IndexSearcher> {
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current = getSearcher(searcherFactory, DirectoryReader.open(dir));
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}
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/**
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* Creates and returns a new SearcherManager from an existing {@link DirectoryReader}. Note that
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* this steals the incoming reference.
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*
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* @param reader the DirectoryReader.
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* @param searcherFactory An optional {@link SearcherFactory}. Pass
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* <code>null</code> if you don't require the searcher to be warmed
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* before going live or other custom behavior.
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*
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* @throws IOException if there is a low-level I/O error
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*/
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public SearcherManager(DirectoryReader reader, SearcherFactory searcherFactory) throws IOException {
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if (searcherFactory == null) {
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searcherFactory = new SearcherFactory();
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}
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this.searcherFactory = searcherFactory;
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this.current = getSearcher(searcherFactory, reader);
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}
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@Override
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protected void decRef(IndexSearcher reference) throws IOException {
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reference.getIndexReader().decRef();
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@ -31,16 +31,20 @@ import org.apache.lucene.analysis.MockAnalyzer;
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import org.apache.lucene.document.Document;
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import org.apache.lucene.index.ConcurrentMergeScheduler;
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import org.apache.lucene.index.DirectoryReader;
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import org.apache.lucene.index.FilterDirectoryReader;
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import org.apache.lucene.index.FilterLeafReader;
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import org.apache.lucene.index.IndexReader;
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import org.apache.lucene.index.IndexWriter;
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import org.apache.lucene.index.IndexWriterConfig;
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import org.apache.lucene.index.LeafReader;
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import org.apache.lucene.index.LeafReaderContext;
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import org.apache.lucene.index.RandomIndexWriter;
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import org.apache.lucene.index.Term;
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import org.apache.lucene.index.ThreadedIndexingAndSearchingTestCase;
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import org.apache.lucene.store.AlreadyClosedException;
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import org.apache.lucene.store.Directory;
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import org.apache.lucene.util.LuceneTestCase;
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import org.apache.lucene.util.LuceneTestCase.SuppressCodecs;
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import org.apache.lucene.util.LuceneTestCase;
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import org.apache.lucene.util.NamedThreadFactory;
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import org.apache.lucene.util.TestUtil;
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@ -446,4 +450,50 @@ public class TestSearcherManager extends ThreadedIndexingAndSearchingTestCase {
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dir.close();
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}
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private static class MyFilterLeafReader extends FilterLeafReader {
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public MyFilterLeafReader(LeafReader in) {
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super(in);
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}
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}
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private static class MyFilterDirectoryReader extends FilterDirectoryReader {
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public MyFilterDirectoryReader(DirectoryReader in) {
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super(in,
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new FilterDirectoryReader.SubReaderWrapper() {
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@Override
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public LeafReader wrap(LeafReader reader) {
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return new MyFilterLeafReader(reader);
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}
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});
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}
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@Override
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protected DirectoryReader doWrapDirectoryReader(DirectoryReader in) {
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return new MyFilterDirectoryReader(in);
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}
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}
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// LUCENE-6087
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public void testCustomDirectoryReader() throws Exception {
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Directory dir = newDirectory();
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RandomIndexWriter w = new RandomIndexWriter(random(), dir);
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DirectoryReader reader = new MyFilterDirectoryReader(w.getReader());
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SearcherManager mgr = new SearcherManager(reader, null);
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for(int i=0;i<10;i++) {
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w.addDocument(new Document());
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mgr.maybeRefresh();
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IndexSearcher s = mgr.acquire();
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try {
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assertTrue(s.getIndexReader() instanceof MyFilterDirectoryReader);
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for (LeafReaderContext ctx : s.getIndexReader().leaves()) {
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assertTrue(ctx.reader() instanceof MyFilterLeafReader);
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}
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} finally {
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mgr.release(s);
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}
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}
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mgr.close();
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w.close();
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dir.close();
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}
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}
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