Package org.xtreemfs.babudb.index.reader

Examples of org.xtreemfs.babudb.index.reader.DiskIndex.numKeys()

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        // create an empty disk index
        byte[][] entries = new byte[][] {};
        populateDiskIndex(entries);
        DiskIndex diskIndex = new DiskIndex(PATH2, new DefaultByteRangeComparator(), COMPRESSED, MMAPED);
       
        assertEquals(entries.length, diskIndex.numKeys());
        diskIndex.destroy();
       
        // create a disk index with a single entry and look up the key
        entries = new byte[][] { "test".getBytes() };
        populateDiskIndex(entries);
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        populateDiskIndex(entries);
        diskIndex = new DiskIndex(PATH2, new DefaultByteRangeComparator(), COMPRESSED, MMAPED);
       
        for (byte[] entry : entries)
            assertEquals(0, COMP.compare(entry, diskIndex.lookup(entry)));
        assertEquals(entries.length, diskIndex.numKeys());
        diskIndex.destroy();
       
        // create a new disk index and look up each key
        entries = new byte[][] { new byte[] { '\0' }, "word".getBytes(), new byte[] { '#' } };
       
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        populateDiskIndex(entries);
        diskIndex = new DiskIndex(PATH2, DefaultByteRangeComparator.getInstance(), COMPRESSED, MMAPED);
       
        for (byte[] entry : entries)
            assertEquals(0, COMP.compare(entry, diskIndex.lookup(entry)));
        assertEquals(entries.length, diskIndex.numKeys());
        diskIndex.destroy();
       
        // create another disk index and look up each key
        entries = new byte[][] { "fdsaf".getBytes(), "blubberbla".getBytes(), "zzz".getBytes(),
            "aaa".getBytes(), "aab".getBytes() };
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        populateDiskIndex(entries);
        diskIndex = new DiskIndex(PATH2, new DefaultByteRangeComparator(), COMPRESSED, MMAPED);
       
        for (byte[] entry : entries)
            assertEquals(0, COMP.compare(entry, diskIndex.lookup(entry)));
        assertEquals(entries.length, diskIndex.numKeys());
        diskIndex.destroy();
       
        // create a larger disk index and look up each key
        entries = createRandomByteArrays(NUM_ENTRIES);
        populateDiskIndex(entries);
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        populateDiskIndex(entries);
        diskIndex = new DiskIndex(PATH2, new DefaultByteRangeComparator(), COMPRESSED, MMAPED);
       
        for (byte[] entry : entries)
            assertEquals(0, COMP.compare(entry, diskIndex.lookup(entry)));
        assertEquals(entries.length, diskIndex.numKeys());
        diskIndex.destroy();
    }
   
    public void testCompleteLookup() throws Exception {
       
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