// LUCENE-1274: test writer.prepareCommit()
public void testPrepareCommitRollback() throws IOException {
MockDirectoryWrapper dir = newDirectory();
dir.setPreventDoubleWrite(false);
IndexWriter writer =
new IndexWriter(
dir,
newIndexWriterConfig(TEST_VERSION_CURRENT, new MockAnalyzer(random()))
.setMaxBufferedDocs(2)
.setMergePolicy(newLogMergePolicy(5)));
writer.commit();
for (int i = 0; i < 23; i++) TestIndexWriter.addDoc(writer);
DirectoryReader reader = DirectoryReader.open(dir);
assertEquals(0, reader.numDocs());
writer.prepareCommit();
IndexReader reader2 = DirectoryReader.open(dir);
assertEquals(0, reader2.numDocs());
writer.rollback();
IndexReader reader3 = DirectoryReader.openIfChanged(reader);
assertNull(reader3);
assertEquals(0, reader.numDocs());
assertEquals(0, reader2.numDocs());
reader.close();
reader2.close();
writer =
new IndexWriter(
dir, newIndexWriterConfig(TEST_VERSION_CURRENT, new MockAnalyzer(random())));
for (int i = 0; i < 17; i++) TestIndexWriter.addDoc(writer);
reader = DirectoryReader.open(dir);
assertEquals(0, reader.numDocs());
reader.close();
writer.prepareCommit();
reader = DirectoryReader.open(dir);
assertEquals(0, reader.numDocs());
reader.close();
writer.commit();
reader = DirectoryReader.open(dir);
assertEquals(17, reader.numDocs());
reader.close();
writer.close();
dir.close();
}
// LUCENE-1274
public void testPrepareCommitNoChanges() throws IOException {
Directory dir = newDirectory();
IndexWriter writer =
new IndexWriter(
dir, newIndexWriterConfig(TEST_VERSION_CURRENT, new MockAnalyzer(random())));
writer.prepareCommit();
writer.commit();
writer.close();
IndexReader reader = DirectoryReader.open(dir);
assertEquals(0, reader.numDocs());
reader.close();
dir.close();
}