public void testEmpty() throws IOException {
VolatileGeneration<Integer, Long> generation =
new VolatileGeneration<Integer, Long>(
new File(tmpDir, "log.log"),
new IntSerializer(),
new LongSerializer(),
new ComparableComparator());
final File indexDir = new File(tmpDir, "indexdir");
ImmutableBTreeIndex.Writer.write(
indexDir, generation.iterator(), new IntSerializer(), new LongSerializer(), 65536, false);
ImmutableBTreeIndex.Reader<Integer, Long> reader =
new ImmutableBTreeIndex.Reader<Integer, Long>(
indexDir, new IntSerializer(), new LongSerializer(), false);
final Iterator<Generation.Entry<Integer, Long>> iterator = reader.iterator();
assertFalse(iterator.hasNext());
}
public void testAllDeletedInYoungGeneration()
throws IOException, TransactionLog.LogClosedException {
VolatileGeneration<Integer, Long> generation =
new VolatileGeneration<Integer, Long>(
new File(tmpDir, "log1.log"),
new IntSerializer(),
new LongSerializer(),
new ComparableComparator());
for (int i = 0; i < 10000; i++) {
generation.put(i, (long) i);
}
final File indexDir1 = new File(tmpDir, "indexdir1");
ImmutableBTreeIndex.Writer.write(
indexDir1, generation.iterator(), new IntSerializer(), new LongSerializer(), 65536, false);
ImmutableBTreeIndex.Reader<Integer, Long> reader =
new ImmutableBTreeIndex.Reader<Integer, Long>(
indexDir1, new IntSerializer(), new LongSerializer(), false);
generation =
new VolatileGeneration<Integer, Long>(
new File(tmpDir, "log2.log"),
new IntSerializer(),
new LongSerializer(),
new ComparableComparator());
for (int i = 0; i < 10000; i++) {
generation.delete(i);
}
final File indexDir2 = new File(tmpDir, "indexDir2");
MergingIterator<Integer, Long> merged =
new MergingIterator<Integer, Long>(
Arrays.asList(generation.iterator(), reader.iterator()), new ComparableComparator());
ImmutableBTreeIndex.Writer.write(
indexDir2, merged, new IntSerializer(), new LongSerializer(), 65536, false);
ImmutableBTreeIndex.Reader<Integer, Long> reader2 =
new ImmutableBTreeIndex.Reader<Integer, Long>(
indexDir2, new IntSerializer(), new LongSerializer(), false);
Iterator<Generation.Entry<Integer, Long>> iterator = reader2.iterator();
assertFalse(iterator.hasNext());
for (int i = 0; i < 10000; i++) {
assertNull(reader2.get(i));
}
}
public void testAllDeletes() throws IOException, TransactionLog.LogClosedException {
VolatileGeneration<Integer, Long> generation =
new VolatileGeneration<Integer, Long>(
new File(tmpDir, "log.log"),
new IntSerializer(),
new LongSerializer(),
new ComparableComparator());
for (int i = 0; i < 10000; i++) {
generation.delete(i);
}
final File indexDir = new File(tmpDir, "indexdir");
ImmutableBTreeIndex.Writer.write(
indexDir, generation.iterator(), new IntSerializer(), new LongSerializer(), 65536, false);
ImmutableBTreeIndex.Reader<Integer, Long> reader =
new ImmutableBTreeIndex.Reader<Integer, Long>(
indexDir, new IntSerializer(), new LongSerializer(), false);
final Iterator<Generation.Entry<Integer, Long>> iterator = reader.iterator();
assertFalse(iterator.hasNext());
for (int i = 0; i < 10000; i++) {
assertNull(reader.get(i));
}
}
