Examples with ReadBuffer com.thinkaurelius.titan.diskstorage.ReadBuffer used on opensource projects

Example 1 with ReadBuffer

use of com.thinkaurelius.titan.diskstorage.ReadBuffer in project titan by thinkaurelius.

the class VariableLongTest method byteOrderPreservingPositiveBackward.

@Test
public void byteOrderPreservingPositiveBackward() {
    long[] scalingFactors = { Long.MAX_VALUE, 1000, 1000000000l };
    for (int t = 0; t < 10000000; t++) {
        StaticBuffer[] b = new StaticBuffer[2];
        long[] l = new long[2];
        for (int i = 0; i < 2; i++) {
            l[i] = randomPosLong(scalingFactors[random.nextInt(scalingFactors.length)]);
            WriteBuffer out = new WriteByteBuffer(11);
            VariableLong.writePositiveBackward(out, l[i]);
            b[i] = out.getStaticBuffer();
            ReadBuffer res = b[i].asReadBuffer();
            res.movePositionTo(res.length());
            assertEquals(l[i], VariableLong.readPositiveBackward(res));
        }
        //            System.out.println(l[0] + " vs " + l[1]);
        assertEquals(Math.signum(Long.compare(l[0], l[1])), Math.signum(b[0].compareTo(b[1])), 0.01);
    }
}

Example 2 with ReadBuffer

use of com.thinkaurelius.titan.diskstorage.ReadBuffer in project titan by thinkaurelius.

the class SerializerTest method comparableStringSerialization.

@Test
public void comparableStringSerialization() {
    //Characters
    DataOutput out = serialize.getDataOutput(((int) Character.MAX_VALUE) * 2 + 8);
    for (char c = Character.MIN_VALUE; c < Character.MAX_VALUE; c++) {
        out.writeObjectNotNull(Character.valueOf(c));
    }
    ReadBuffer b = out.getStaticBuffer().asReadBuffer();
    for (char c = Character.MIN_VALUE; c < Character.MAX_VALUE; c++) {
        assertEquals(c, serialize.readObjectNotNull(b, Character.class).charValue());
    }
    //String
    for (int t = 0; t < 10000; t++) {
        DataOutput out1 = serialize.getDataOutput(32 + 5);
        DataOutput out2 = serialize.getDataOutput(32 + 5);
        String s1 = RandomGenerator.randomString(1, 32);
        String s2 = RandomGenerator.randomString(1, 32);
        out1.writeObjectByteOrder(s1, String.class);
        out2.writeObjectByteOrder(s2, String.class);
        StaticBuffer b1 = out1.getStaticBuffer();
        StaticBuffer b2 = out2.getStaticBuffer();
        assertEquals(s1, serialize.readObjectByteOrder(b1.asReadBuffer(), String.class));
        assertEquals(s2, serialize.readObjectByteOrder(b2.asReadBuffer(), String.class));
        assertEquals(s1 + " vs " + s2, Integer.signum(s1.compareTo(s2)), Integer.signum(b1.compareTo(b2)));
    }
}

Example 3 with ReadBuffer

use of com.thinkaurelius.titan.diskstorage.ReadBuffer in project titan by thinkaurelius.

the class SerializerTest method testSerializationMixture.

@Test
public void testSerializationMixture() {
    serialize.registerClass(1, TClass1.class, new TClass1Serializer());
    for (int t = 0; t < 1000; t++) {
        DataOutput out = serialize.getDataOutput(128);
        int num = random.nextInt(100) + 1;
        List<SerialEntry> entries = new ArrayList<SerialEntry>(num);
        for (int i = 0; i < num; i++) {
            Map.Entry<Class, Factory> type = Iterables.get(TYPES.entrySet(), random.nextInt(TYPES.size()));
            Object element = type.getValue().newInstance();
            boolean notNull = true;
            if (random.nextDouble() < 0.5) {
                notNull = false;
                if (random.nextDouble() < 0.2)
                    element = null;
            }
            entries.add(new SerialEntry(element, type.getKey(), notNull));
            if (notNull)
                out.writeObjectNotNull(element);
            else
                out.writeObject(element, type.getKey());
        }
        StaticBuffer sb = out.getStaticBuffer();
        ReadBuffer in = sb.asReadBuffer();
        for (SerialEntry entry : entries) {
            Object read;
            if (entry.notNull)
                read = serialize.readObjectNotNull(in, entry.clazz);
            else
                read = serialize.readObject(in, entry.clazz);
            if (entry.object == null)
                assertNull(read);
            else if (entry.clazz.isArray()) {
                assertEquals(Array.getLength(entry.object), Array.getLength(read));
                for (int i = 0; i < Array.getLength(read); i++) {
                    assertEquals(Array.get(entry.object, i), Array.get(read, i));
                }
            } else
                assertEquals(entry.object, read);
        }
    }
}

Example 4 with ReadBuffer

use of com.thinkaurelius.titan.diskstorage.ReadBuffer in project titan by thinkaurelius.

the class SerializerTest method testStringCompression.

@Test
public void testStringCompression() {
    //ASCII encoding
    for (int t = 0; t < 100; t++) {
        String x = getRandomString(StringSerializer.TEXT_COMRPESSION_THRESHOLD - 1, ASCII_VALUE);
        assertEquals(x.length() + 1, getStringBuffer(x).length());
    }
    //SMAZ Encoding
    //        String[] texts = {
    //                "To Sherlock Holmes she is always the woman. I have seldom heard him mention her under any other name. In his eyes she eclipses and predominates the whole of her sex.",
    //                "His manner was not effusive. It seldom was; but he was glad, I think, to see me. With hardly a word spoken, but with a kindly eye, he waved me to an armchair",
    //                "I could not help laughing at the ease with which he explained his process of deduction.",
    //                "A man entered who could hardly have been less than six feet six inches in height, with the chest and limbs of a Hercules. His dress was rich with a richness which would, in England"
    //        };
    //        for (String text : texts) {
    //            assertTrue(text.length()> StringSerializer.TEXT_COMRPESSION_THRESHOLD);
    //            StaticBuffer s = getStringBuffer(text);
    ////            System.out.println(String.format("String length [%s] -> byte size [%s]",text.length(),s.length()));
    //            assertTrue(text.length()>s.length()); //Test that actual compression is happening
    //        }
    //Gzip Encoding
    String[] patterns = { "aQd>@!as/df5h", "sdfodoiwk", "sdf", "ab", "asdfwewefefwdfkajhqwkdhj" };
    int targetLength = StringSerializer.LONG_COMPRESSION_THRESHOLD * 5;
    for (String pattern : patterns) {
        StringBuilder sb = new StringBuilder(targetLength);
        for (int i = 0; i < targetLength / pattern.length(); i++) sb.append(pattern);
        String text = sb.toString();
        assertTrue(text.length() > StringSerializer.LONG_COMPRESSION_THRESHOLD);
        StaticBuffer s = getStringBuffer(text);
        //            System.out.println(String.format("String length [%s] -> byte size [%s]",text.length(),s.length()));
        //Test that radical compression is happening
        assertTrue(text.length() > s.length() * 10);
    }
    for (int t = 0; t < 10000; t++) {
        String x = STRING_FACTORY.newInstance();
        DataOutput o = serialize.getDataOutput(64);
        o.writeObject(x, String.class);
        ReadBuffer r = o.getStaticBuffer().asReadBuffer();
        String y = serialize.readObject(r, String.class);
        assertEquals(x, y);
    }
}

Example 5 with ReadBuffer

use of com.thinkaurelius.titan.diskstorage.ReadBuffer in project titan by thinkaurelius.

the class SerializerTestCommon method multipleStringWrite.

protected void multipleStringWrite() {
    //26 chars
    String base = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
    int no = 100;
    DataOutput out = serialize.getDataOutput(128);
    for (int i = 0; i < no; i++) {
        String str = base + (i + 1);
        out.writeObjectNotNull(str);
    }
    ReadBuffer b = out.getStaticBuffer().asReadBuffer();
    if (printStats)
        log.debug(bufferStats(b));
    for (int i = 0; i < no; i++) {
        String str = base + (i + 1);
        String read = serialize.readObjectNotNull(b, String.class);
        assertEquals(str, read);
    }
    assertFalse(b.hasRemaining());
}