Example usage for org.apache.lucene.store MockDirectoryWrapper listAll

Introduction

In this page you can find the example usage for org.apache.lucene.store MockDirectoryWrapper listAll.

Prototype

@Override
    public synchronized String[] listAll() throws IOException 

Source Link

Usage

From source file:org.elasticsearch.common.lucene.LuceneTests.java

License:Apache License

public void testCleanIndex() throws IOException {
    MockDirectoryWrapper dir = newMockDirectory();
    dir.setEnableVirusScanner(false);//  w  ww  . jav  a  2  s .c o m
    IndexWriterConfig iwc = newIndexWriterConfig();
    iwc.setIndexDeletionPolicy(NoDeletionPolicy.INSTANCE);
    iwc.setMergePolicy(NoMergePolicy.INSTANCE);
    iwc.setMaxBufferedDocs(2);
    IndexWriter writer = new IndexWriter(dir, iwc);
    Document doc = new Document();
    doc.add(new TextField("id", "1", random().nextBoolean() ? Field.Store.YES : Field.Store.NO));
    writer.addDocument(doc);
    writer.commit();

    doc = new Document();
    doc.add(new TextField("id", "2", random().nextBoolean() ? Field.Store.YES : Field.Store.NO));
    writer.addDocument(doc);

    doc = new Document();
    doc.add(new TextField("id", "3", random().nextBoolean() ? Field.Store.YES : Field.Store.NO));
    writer.addDocument(doc);

    writer.commit();
    doc = new Document();
    doc.add(new TextField("id", "4", random().nextBoolean() ? Field.Store.YES : Field.Store.NO));
    writer.addDocument(doc);

    writer.deleteDocuments(new Term("id", "2"));
    writer.commit();
    try (DirectoryReader open = DirectoryReader.open(writer, true)) {
        assertEquals(3, open.numDocs());
        assertEquals(1, open.numDeletedDocs());
        assertEquals(4, open.maxDoc());
    }
    writer.close();
    if (random().nextBoolean()) {
        for (String file : dir.listAll()) {
            if (file.startsWith("_1")) {
                // delete a random file
                dir.deleteFile(file);
                break;
            }
        }
    }
    Lucene.cleanLuceneIndex(dir);
    if (dir.listAll().length > 0) {
        for (String file : dir.listAll()) {
            if (file.startsWith("extra") == false) {
                assertEquals(file, "write.lock");
            }
        }
    }
    dir.close();
}

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From source file:org.elasticsearch.common.lucene.LuceneTests.java

License:Apache License

public void testPruneUnreferencedFiles() throws IOException {
    MockDirectoryWrapper dir = newMockDirectory();
    dir.setEnableVirusScanner(false);/*ww w  . j a  v  a2 s  .  c  o  m*/
    IndexWriterConfig iwc = newIndexWriterConfig();
    iwc.setIndexDeletionPolicy(NoDeletionPolicy.INSTANCE);
    iwc.setMergePolicy(NoMergePolicy.INSTANCE);
    iwc.setMaxBufferedDocs(2);
    IndexWriter writer = new IndexWriter(dir, iwc);
    Document doc = new Document();
    doc.add(new TextField("id", "1", random().nextBoolean() ? Field.Store.YES : Field.Store.NO));
    writer.addDocument(doc);
    writer.commit();

    doc = new Document();
    doc.add(new TextField("id", "2", random().nextBoolean() ? Field.Store.YES : Field.Store.NO));
    writer.addDocument(doc);

    doc = new Document();
    doc.add(new TextField("id", "3", random().nextBoolean() ? Field.Store.YES : Field.Store.NO));
    writer.addDocument(doc);

    writer.commit();
    SegmentInfos segmentCommitInfos = Lucene.readSegmentInfos(dir);

    doc = new Document();
    doc.add(new TextField("id", "4", random().nextBoolean() ? Field.Store.YES : Field.Store.NO));
    writer.addDocument(doc);

    writer.deleteDocuments(new Term("id", "2"));
    writer.commit();
    DirectoryReader open = DirectoryReader.open(writer, true);
    assertEquals(3, open.numDocs());
    assertEquals(1, open.numDeletedDocs());
    assertEquals(4, open.maxDoc());
    open.close();
    writer.close();
    SegmentInfos si = Lucene.pruneUnreferencedFiles(segmentCommitInfos.getSegmentsFileName(), dir);
    assertEquals(si.getSegmentsFileName(), segmentCommitInfos.getSegmentsFileName());
    open = DirectoryReader.open(dir);
    assertEquals(3, open.numDocs());
    assertEquals(0, open.numDeletedDocs());
    assertEquals(3, open.maxDoc());

    IndexSearcher s = new IndexSearcher(open);
    assertEquals(s.search(new TermQuery(new Term("id", "1")), 1).totalHits, 1);
    assertEquals(s.search(new TermQuery(new Term("id", "2")), 1).totalHits, 1);
    assertEquals(s.search(new TermQuery(new Term("id", "3")), 1).totalHits, 1);
    assertEquals(s.search(new TermQuery(new Term("id", "4")), 1).totalHits, 0);

    for (String file : dir.listAll()) {
        assertFalse("unexpected file: " + file, file.equals("segments_3") || file.startsWith("_2"));
    }
    open.close();
    dir.close();

}

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