Package org.apache.lucene.facet.taxonomy.directory

Examples of org.apache.lucene.facet.taxonomy.directory.DirectoryTaxonomyWriter.commit()

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    assertEquals(1, tr.getSize()); // the empty taxonomy has size 1 (the root)
    tw.addCategory(new FacetLabel("Author"));
    assertEquals(1, tr.getSize()); // still root only...
    assertNull(TaxonomyReader.openIfChanged(tr)); // this is not enough, because tw.commit() hasn't been done yet
    assertEquals(1, tr.getSize()); // still root only...
    tw.commit();
    assertEquals(1, tr.getSize()); // still root only...
    TaxonomyReader newTaxoReader = TaxonomyReader.openIfChanged(tr);
    assertNotNull(newTaxoReader);
    tr.close();
    tr = newTaxoReader;
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    // the parent of this category is correct (this requires the reader
    // to correctly update its prefetched parent vector), and that the
    // old information also wasn't ruined:
    tw.addCategory(new FacetLabel("Author", "Richard Dawkins"));
    int dawkins = 2;
    tw.commit();
    newTaxoReader = TaxonomyReader.openIfChanged(tr);
    assertNotNull(newTaxoReader);
    tr.close();
    tr = newTaxoReader;
    int[] parents = tr.getParallelTaxonomyArrays().parents();
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    tw.addCategory(new CategoryPath("hi"));
    // Do a commit(). Here was a bug - if tw had a reader open, it should
    // be reopened after the commit. However, in our case the reader should
    // not be open (as explained above) but because it was not set to null,
    // we forgot that, tried to reopen it, and got an AlreadyClosedException.
    tw.commit();
    assertEquals(expectedCategories.length+1, tw.getSize());   
    tw.close();
    indexDir.close();
  } 
 
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   */
  @Test
  public void testRootOnly2() throws Exception {
    Directory indexDir = newDirectory();
    TaxonomyWriter tw = new DirectoryTaxonomyWriter(indexDir);
    tw.commit();
    TaxonomyReader tr = new DirectoryTaxonomyReader(indexDir);
    assertEquals(1, tr.getSize());
    assertEquals(0, tr.getPath(0).length());
    assertEquals(TaxonomyReader.INVALID_ORDINAL, tr.getParent(0));
    assertEquals(0, tr.getOrdinal(new CategoryPath()));
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    tr = checker.openReader(dir);
    tw = checker.openWriter(dir);
    tw.addCategory(new CategoryPath("animal", "cat"));
    tr.refresh();
    tw.commit();
    tw.close();
    tr.refresh();
    tr.close();
    assertEquals(0, checker.nopen());
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    try {
      dir = newDirectory();
      ltw = new DirectoryTaxonomyWriter(dir);
     
      ltw.addCategory(new CategoryPath("a"));
      ltw.commit();
     
      ltr = new DirectoryTaxonomyReader(dir);
      assertFalse("Nothing has changed",ltr.refresh());
     
      ltw.addCategory(new CategoryPath("b"));
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      ltr = new DirectoryTaxonomyReader(dir);
      assertFalse("Nothing has changed",ltr.refresh());
     
      ltw.addCategory(new CategoryPath("b"));
      ltw.commit();
     
      assertTrue("changes were committed",ltr.refresh());
      assertFalse("Nothing has changed",ltr.refresh());
    } finally {
      IOUtils.close(ltw, ltr, dir);
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  public void testRefreshAndRefCount() throws Exception {
    Directory dir = new RAMDirectory(); // no need for random directories here

    DirectoryTaxonomyWriter taxoWriter = new DirectoryTaxonomyWriter(dir);
    taxoWriter.addCategory(new CategoryPath("a"));
    taxoWriter.commit();

    DirectoryTaxonomyReader taxoReader = new DirectoryTaxonomyReader(dir);
    assertEquals("wrong refCount", 1, taxoReader.getRefCount());

    taxoReader.incRef();
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    taxoReader.incRef();
    assertEquals("wrong refCount", 2, taxoReader.getRefCount());

    taxoWriter.addCategory(new CategoryPath("a", "b"));
    taxoWriter.commit();
    taxoReader.refresh();
    assertEquals("wrong refCount", 2, taxoReader.getRefCount());

    taxoWriter.close();
    taxoReader.close();
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    // commit changes.
    // we commit changes to the taxonomy index prior to committing them to the search index.
    // this is important, so that all facets referred to by documents in the search index
    // will indeed exist in the taxonomy index.
    taxo.commit();
    iw.commit();

    // close the taxonomy index and the index - all modifications are
    // now safely in the provided directories: indexDir and taxoDir.
    taxo.close();
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