Examples of org.apache.lucene.store.MockRAMDirectory$Failure

org.apache.lucene.store.MockRAMDirectory
Objects that represent fail-able conditions. Objects of a derived class are created and registered with the mock directory. After register, each object will be invoked once for each first write of a file, giving the object a chance to throw an IOException.

  public void testOpenPriorSnapshot() throws IOException {
  
    // Never deletes a commit
    KeepAllDeletionPolicy policy = new KeepAllDeletionPolicy();


    Directory dir = new MockRAMDirectory();
    policy.dir = dir;


    IndexWriter writer = new IndexWriter(dir, new WhitespaceAnalyzer(), policy, IndexWriter.MaxFieldLength.LIMITED);
    writer.setMaxBufferedDocs(2);
    for(int i=0;i<10;i++) {
      addDoc(writer);
      if ((1+i)%2 == 0)
        writer.commit();
    }
    writer.close();


    Collection commits = IndexReader.listCommits(dir);
    assertEquals(6, commits.size());
    IndexCommit lastCommit = null;
    Iterator it = commits.iterator();
    while(it.hasNext()) {
      IndexCommit commit = (IndexCommit) it.next();
      if (lastCommit == null || commit.getGeneration() > lastCommit.getGeneration())
        lastCommit = commit;
    }
    assertTrue(lastCommit != null);


    // Now add 1 doc and optimize
    writer = new IndexWriter(dir, new WhitespaceAnalyzer(), policy, IndexWriter.MaxFieldLength.LIMITED);
    addDoc(writer);
    assertEquals(11, writer.numDocs());
    writer.optimize();
    writer.close();


    assertEquals(7, IndexReader.listCommits(dir).size());


    // Now open writer on the commit just before optimize:
    writer = new IndexWriter(dir, new WhitespaceAnalyzer(), policy, IndexWriter.MaxFieldLength.LIMITED, lastCommit);
    assertEquals(10, writer.numDocs());


    // Should undo our rollback:
    writer.rollback();


    IndexReader r = IndexReader.open(dir, true);
    // Still optimized, still 11 docs
    assertTrue(r.isOptimized());
    assertEquals(11, r.numDocs());
    r.close();


    writer = new IndexWriter(dir, new WhitespaceAnalyzer(), policy, IndexWriter.MaxFieldLength.LIMITED, lastCommit);
    assertEquals(10, writer.numDocs());
    // Commits the rollback:
    writer.close();


    // Now 8 because we made another commit
    assertEquals(8, IndexReader.listCommits(dir).size());
    
    r = IndexReader.open(dir, true);
    // Not optimized because we rolled it back, and now only
    // 10 docs
    assertTrue(!r.isOptimized());
    assertEquals(10, r.numDocs());
    r.close();


    // Reoptimize
    writer = new IndexWriter(dir, new WhitespaceAnalyzer(), policy, IndexWriter.MaxFieldLength.LIMITED);
    writer.optimize();
    writer.close();


    r = IndexReader.open(dir, true);
    assertTrue(r.isOptimized());
    assertEquals(10, r.numDocs());
    r.close();


    // Now open writer on the commit just before optimize,
    // but this time keeping only the last commit:
    writer = new IndexWriter(dir, new WhitespaceAnalyzer(), new KeepOnlyLastCommitDeletionPolicy(), IndexWriter.MaxFieldLength.LIMITED, lastCommit);
    assertEquals(10, writer.numDocs());
    
    // Reader still sees optimized index, because writer
    // opened on the prior commit has not yet committed:
    r = IndexReader.open(dir, true);
    assertTrue(r.isOptimized());
    assertEquals(10, r.numDocs());
    r.close();


    writer.close();


    // Now reader sees unoptimized index:
    r = IndexReader.open(dir, true);
    assertTrue(!r.isOptimized());
    assertEquals(10, r.numDocs());
    r.close();


    dir.close();
  }

View Full Code Here

    String[] unindexed = { "Netherlands", "Italy" };
    String[] unstored = { "Amsterdam has lots of bridges",
        "Venice has lots of canals" };
    String[] text = { "Amsterdam", "Venice" };


    Directory dir = new MockRAMDirectory();
    IndexWriter modifier = new IndexWriter(dir,
                                           new WhitespaceAnalyzer(), true, IndexWriter.MaxFieldLength.UNLIMITED);
    modifier.setUseCompoundFile(true);
    modifier.setMaxBufferedDeleteTerms(1);


    for (int i = 0; i < keywords.length; i++) {
      Document doc = new Document();
      doc.add(new Field("id", keywords[i], Field.Store.YES,
                        Field.Index.NOT_ANALYZED));
      doc.add(new Field("country", unindexed[i], Field.Store.YES,
                        Field.Index.NO));
      doc.add(new Field("contents", unstored[i], Field.Store.NO,
                        Field.Index.ANALYZED));
      doc
        .add(new Field("city", text[i], Field.Store.YES,
                       Field.Index.ANALYZED));
      modifier.addDocument(doc);
    }
    modifier.optimize();
    modifier.commit();


    Term term = new Term("city", "Amsterdam");
    int hitCount = getHitCount(dir, term);
    assertEquals(1, hitCount);
    modifier.deleteDocuments(term);
    modifier.commit();
    hitCount = getHitCount(dir, term);
    assertEquals(0, hitCount);


    modifier.close();
    dir.close();
  }

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  }


  // test when delete terms only apply to disk segments
  public void testNonRAMDelete() throws IOException {


    Directory dir = new MockRAMDirectory();
    IndexWriter modifier = new IndexWriter(dir,
                                           new WhitespaceAnalyzer(), true, IndexWriter.MaxFieldLength.UNLIMITED);
    modifier.setMaxBufferedDocs(2);
    modifier.setMaxBufferedDeleteTerms(2);


    int id = 0;
    int value = 100;


    for (int i = 0; i < 7; i++) {
      addDoc(modifier, ++id, value);
    }
    modifier.commit();


    assertEquals(0, modifier.getNumBufferedDocuments());
    assertTrue(0 < modifier.getSegmentCount());


    modifier.commit();


    IndexReader reader = IndexReader.open(dir, true);
    assertEquals(7, reader.numDocs());
    reader.close();


    modifier.deleteDocuments(new Term("value", String.valueOf(value)));


    modifier.commit();


    reader = IndexReader.open(dir, true);
    assertEquals(0, reader.numDocs());
    reader.close();
    modifier.close();
    dir.close();
  }

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    modifier.close();
    dir.close();
  }


  public void testMaxBufferedDeletes() throws IOException {
    Directory dir = new MockRAMDirectory();
    IndexWriter writer = new IndexWriter(dir,
                                         new WhitespaceAnalyzer(), true, IndexWriter.MaxFieldLength.UNLIMITED);
    writer.setMaxBufferedDeleteTerms(1);
    writer.deleteDocuments(new Term("foobar", "1"));
    writer.deleteDocuments(new Term("foobar", "1"));
    writer.deleteDocuments(new Term("foobar", "1"));
    assertEquals(3, writer.getFlushDeletesCount());
    writer.close();
    dir.close();
  }

View Full Code Here

  }


  // test when delete terms only apply to ram segments
  public void testRAMDeletes() throws IOException {
    for(int t=0;t<2;t++) {
      Directory dir = new MockRAMDirectory();
      IndexWriter modifier = new IndexWriter(dir,
                                             new WhitespaceAnalyzer(), true, IndexWriter.MaxFieldLength.UNLIMITED);
      modifier.setMaxBufferedDocs(4);
      modifier.setMaxBufferedDeleteTerms(4);


      int id = 0;
      int value = 100;


      addDoc(modifier, ++id, value);
      if (0 == t)
        modifier.deleteDocuments(new Term("value", String.valueOf(value)));
      else
        modifier.deleteDocuments(new TermQuery(new Term("value", String.valueOf(value))));
      addDoc(modifier, ++id, value);
      if (0 == t) {
        modifier.deleteDocuments(new Term("value", String.valueOf(value)));
        assertEquals(2, modifier.getNumBufferedDeleteTerms());
        assertEquals(1, modifier.getBufferedDeleteTermsSize());
      }
      else
        modifier.deleteDocuments(new TermQuery(new Term("value", String.valueOf(value))));


      addDoc(modifier, ++id, value);
      assertEquals(0, modifier.getSegmentCount());
      modifier.commit();


      modifier.commit();


      IndexReader reader = IndexReader.open(dir, true);
      assertEquals(1, reader.numDocs());


      int hitCount = getHitCount(dir, new Term("id", String.valueOf(id)));
      assertEquals(1, hitCount);
      reader.close();
      modifier.close();
      dir.close();
    }
  }

View Full Code Here

    }
  }


  // test when delete terms apply to both disk and ram segments
  public void testBothDeletes() throws IOException {
    Directory dir = new MockRAMDirectory();
    IndexWriter modifier = new IndexWriter(dir,
                                           new WhitespaceAnalyzer(), true, IndexWriter.MaxFieldLength.UNLIMITED);
    modifier.setMaxBufferedDocs(100);
    modifier.setMaxBufferedDeleteTerms(100);

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    modifier.close();
  }


  // test that batched delete terms are flushed together
  public void testBatchDeletes() throws IOException {
    Directory dir = new MockRAMDirectory();
    IndexWriter modifier = new IndexWriter(dir,
                                           new WhitespaceAnalyzer(), true, IndexWriter.MaxFieldLength.UNLIMITED);
    modifier.setMaxBufferedDocs(2);
    modifier.setMaxBufferedDeleteTerms(2);


    int id = 0;
    int value = 100;


    for (int i = 0; i < 7; i++) {
      addDoc(modifier, ++id, value);
    }
    modifier.commit();


    IndexReader reader = IndexReader.open(dir, true);
    assertEquals(7, reader.numDocs());
    reader.close();
      
    id = 0;
    modifier.deleteDocuments(new Term("id", String.valueOf(++id)));
    modifier.deleteDocuments(new Term("id", String.valueOf(++id)));


    modifier.commit();


    reader = IndexReader.open(dir, true);
    assertEquals(5, reader.numDocs());
    reader.close();


    Term[] terms = new Term[3];
    for (int i = 0; i < terms.length; i++) {
      terms[i] = new Term("id", String.valueOf(++id));
    }
    modifier.deleteDocuments(terms);
    modifier.commit();
    reader = IndexReader.open(dir, true);
    assertEquals(2, reader.numDocs());
    reader.close();


    modifier.close();
    dir.close();
  }

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    dir.close();
  }


  // test deleteAll()
  public void testDeleteAll() throws IOException {
    Directory dir = new MockRAMDirectory();
    IndexWriter modifier = new IndexWriter(dir,
                                           new WhitespaceAnalyzer(), true, IndexWriter.MaxFieldLength.UNLIMITED);
    modifier.setMaxBufferedDocs(2);
    modifier.setMaxBufferedDeleteTerms(2);


    int id = 0;
    int value = 100;


    for (int i = 0; i < 7; i++) {
      addDoc(modifier, ++id, value);
    }
    modifier.commit();


    IndexReader reader = IndexReader.open(dir, true);
    assertEquals(7, reader.numDocs());
    reader.close();


    // Add 1 doc (so we will have something buffered)
    addDoc(modifier, 99, value);


    // Delete all
    modifier.deleteAll();


    // Delete all shouldn't be on disk yet
    reader = IndexReader.open(dir, true);
    assertEquals(7, reader.numDocs());
    reader.close();


    // Add a doc and update a doc (after the deleteAll, before the commit)
    addDoc(modifier, 101, value);
    updateDoc(modifier, 102, value);


    // commit the delete all
    modifier.commit();


    // Validate there are no docs left
    reader = IndexReader.open(dir, true);
    assertEquals(2, reader.numDocs());
    reader.close();


    modifier.close();
    dir.close();
  }

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    dir.close();
  }


  // test rollback of deleteAll()
  public void testDeleteAllRollback() throws IOException {
    Directory dir = new MockRAMDirectory();
    IndexWriter modifier = new IndexWriter(dir,
                                           new WhitespaceAnalyzer(), true, IndexWriter.MaxFieldLength.UNLIMITED);
    modifier.setMaxBufferedDocs(2);
    modifier.setMaxBufferedDeleteTerms(2);
    
    int id = 0;
    int value = 100;
    
    for (int i = 0; i < 7; i++) {
      addDoc(modifier, ++id, value);
    }
    modifier.commit();
    
    addDoc(modifier, ++id, value);


    IndexReader reader = IndexReader.open(dir, true);
    assertEquals(7, reader.numDocs());
    reader.close();
    
    // Delete all
    modifier.deleteAll(); 


    // Roll it back
    modifier.rollback();
    modifier.close();
    
    // Validate that the docs are still there
    reader = IndexReader.open(dir, true);
    assertEquals(7, reader.numDocs());
    reader.close();
    
    dir.close();
  }

View Full Code Here

  }




  // test deleteAll() w/ near real-time reader
  public void testDeleteAllNRT() throws IOException {
    Directory dir = new MockRAMDirectory();
    IndexWriter modifier = new IndexWriter(dir,
                                           new WhitespaceAnalyzer(), true, IndexWriter.MaxFieldLength.UNLIMITED);
    modifier.setMaxBufferedDocs(2);
    modifier.setMaxBufferedDeleteTerms(2);
    
    int id = 0;
    int value = 100;
    
    for (int i = 0; i < 7; i++) {
      addDoc(modifier, ++id, value);
    }
    modifier.commit();


    IndexReader reader = modifier.getReader();
    assertEquals(7, reader.numDocs());
    reader.close();


    addDoc(modifier, ++id, value);
    addDoc(modifier, ++id, value);
    
    // Delete all
    modifier.deleteAll(); 


    reader = modifier.getReader();
    assertEquals(0, reader.numDocs());
    reader.close();
    


    // Roll it back
    modifier.rollback();
    modifier.close();
    
    // Validate that the docs are still there
    reader = IndexReader.open(dir, true);
    assertEquals(7, reader.numDocs());
    reader.close();
    
    dir.close();
  }

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