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

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

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    Directory indexDirBase = newDirectory();
    TaxonomyWriter twBase = new DirectoryTaxonomyWriter(indexDirBase);
    twBase.addCategory(new CategoryPath("a", "0"));
    final CategoryPath abPath = new CategoryPath("a", "b");
    twBase.addCategory(abPath);
    twBase.commit();
    TaxonomyReader trBase = new DirectoryTaxonomyReader(indexDirBase);

    final ParallelTaxonomyArrays ca1 = trBase.getParallelTaxonomyArrays();
   
    final int abOrd = trBase.getOrdinal(abPath);
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      throws Exception {
    SlowRAMDirectory indexDir = new SlowRAMDirectory(-1, null); // no slowness for intialization
    TaxonomyWriter tw = new DirectoryTaxonomyWriter(indexDir);
    tw.addCategory(new CategoryPath("a", "0"));
    tw.addCategory(abPath);
    tw.commit();
   
    final DirectoryTaxonomyReader tr = new DirectoryTaxonomyReader(indexDir);
    for (int i = 0; i < numCategories; i++) {
      final CategoryPath cp = new CategoryPath("a", "b", Integer.toString(i));
      tw.addCategory(cp);
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   */
  @Test
  public void testSeparateReaderAndWriter() throws Exception {
    Directory indexDir = newDirectory();
    TaxonomyWriter tw = new DirectoryTaxonomyWriter(indexDir);
    tw.commit();
    TaxonomyReader tr = new DirectoryTaxonomyReader(indexDir);

    int author = 1;

    // getParent() and getSize() test:
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      fail("Before commit() and refresh(), getParent for "+author+" should still throw exception");
    } catch (ArrayIndexOutOfBoundsException e) {
      // ok
    }
    assertEquals(1, tr.getSize()); // still root only...
    tw.commit();
    try {
      tr.getParent(author);
      fail("Before refresh(), getParent for "+author+" should still throw exception");
    } catch (ArrayIndexOutOfBoundsException e) {
      // ok
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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 CategoryPath("Author", "Richard Dawkins"));
    int dawkins = 2;
    tw.commit();
    newTaxoReader = TaxonomyReader.openIfChanged(tr);
    assertNotNull(newTaxoReader);
    tr.close();
    tr = newTaxoReader;
    assertEquals(author, tr.getParent(dawkins));
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  @Test
  public void testSeparateReaderAndWriter2() throws Exception {
    Directory indexDir = newDirectory();
    TaxonomyWriter tw = new DirectoryTaxonomyWriter(indexDir);
    tw.commit();
    TaxonomyReader tr = new DirectoryTaxonomyReader(indexDir);

    // Test getOrdinal():
    CategoryPath author = new CategoryPath("Author");
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    assertEquals(TaxonomyReader.INVALID_ORDINAL, tr.getOrdinal(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(TaxonomyReader.INVALID_ORDINAL, tr.getOrdinal(author));
    assertEquals(1, tr.getSize()); // still root only...
    tw.commit();
    // still not enough before refresh:
    assertEquals(TaxonomyReader.INVALID_ORDINAL, tr.getOrdinal(author));
    assertEquals(1, tr.getSize()); // still root only...
    TaxonomyReader newTaxoReader = TaxonomyReader.openIfChanged(tr);
    assertNotNull(newTaxoReader);
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  public void testWriterLock() throws Exception {
    // native fslock impl gets angry if we use it, so use RAMDirectory explicitly.
    Directory indexDir = new RAMDirectory();
    TaxonomyWriter tw = new DirectoryTaxonomyWriter(indexDir);
    tw.addCategory(new CategoryPath("hi", "there"));
    tw.commit();
    // we deliberately not close the write now, and keep it open and
    // locked.
    // Verify that the writer worked:
    TaxonomyReader tr = new DirectoryTaxonomyReader(indexDir);
    assertEquals(2, tr.getOrdinal(new CategoryPath("hi", "there")));
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        indexWriter.addDocument(doc);
      }
    }
   
    indexWriter.commit();
    taxoWriter.commit();

    // delete the docs that were marked for deletion. note that the 'dummy'
    // category is not removed from the taxonomy, so must account for it when we
    // verify the migrated index.
    indexWriter.deleteDocuments(new Term("del", "key"));
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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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