Examples with ISerializerDeserializer org.apache.hyracks.api.dataflow.value.ISerializerDeserializer used on opensource projects

Example 21 with ISerializerDeserializer

use of org.apache.hyracks.api.dataflow.value.ISerializerDeserializer in project asterixdb by apache.

the class DateFromUnixTimeInDaysDescriptor method createEvaluatorFactory.

@Override
public IScalarEvaluatorFactory createEvaluatorFactory(final IScalarEvaluatorFactory[] args) {
    return new IScalarEvaluatorFactory() {

        private static final long serialVersionUID = 1L;

        @Override
        public IScalarEvaluator createScalarEvaluator(final IHyracksTaskContext ctx) throws HyracksDataException {
            return new IScalarEvaluator() {

                private ArrayBackedValueStorage resultStorage = new ArrayBackedValueStorage();

                private DataOutput out = resultStorage.getDataOutput();

                private IPointable argPtr = new VoidPointable();

                private IScalarEvaluator eval = args[0].createScalarEvaluator(ctx);

                private AMutableDate aDate = new AMutableDate(0);

                // possible returning types
                @SuppressWarnings("unchecked")
                private ISerializerDeserializer<ADate> dateSerde = SerializerDeserializerProvider.INSTANCE.getSerializerDeserializer(BuiltinType.ADATE);

                @Override
                public void evaluate(IFrameTupleReference tuple, IPointable result) throws HyracksDataException {
                    resultStorage.reset();
                    eval.evaluate(tuple, argPtr);
                    aDate.setValue(ATypeHierarchy.getIntegerValue(getIdentifier().getName(), 0, argPtr.getByteArray(), argPtr.getStartOffset()));
                    dateSerde.serialize(aDate, out);
                    result.set(resultStorage);
                }
            };
        }
    };
}

Example 22 with ISerializerDeserializer

use of org.apache.hyracks.api.dataflow.value.ISerializerDeserializer in project asterixdb by apache.

the class LSMBTreeExamplesTest method additionalFilteringingExample.

/**
     * Test the LSM component filters.
     */
@Test
public void additionalFilteringingExample() throws Exception {
    if (LOGGER.isLoggable(Level.INFO)) {
        LOGGER.info("Testing LSMBTree component filters.");
    }
    // Declare fields.
    int fieldCount = 2;
    ITypeTraits[] typeTraits = new ITypeTraits[fieldCount];
    typeTraits[0] = IntegerPointable.TYPE_TRAITS;
    typeTraits[1] = IntegerPointable.TYPE_TRAITS;
    // Declare field serdes.
    ISerializerDeserializer[] fieldSerdes = { IntegerSerializerDeserializer.INSTANCE, IntegerSerializerDeserializer.INSTANCE };
    // Declare keys.
    int keyFieldCount = 1;
    IBinaryComparatorFactory[] cmpFactories = new IBinaryComparatorFactory[keyFieldCount];
    cmpFactories[0] = PointableBinaryComparatorFactory.of(IntegerPointable.FACTORY);
    // This is only used for the LSM-BTree.
    int[] bloomFilterKeyFields = new int[keyFieldCount];
    bloomFilterKeyFields[0] = 0;
    ITypeTraits[] filterTypeTraits = { IntegerPointable.TYPE_TRAITS };
    IBinaryComparatorFactory[] filterCmpFactories = { PointableBinaryComparatorFactory.of(IntegerPointable.FACTORY) };
    int[] filterFields = { 1 };
    int[] btreeFields = { 1 };
    ITreeIndex treeIndex = createTreeIndex(typeTraits, cmpFactories, bloomFilterKeyFields, filterTypeTraits, filterCmpFactories, btreeFields, filterFields);
    treeIndex.create();
    treeIndex.activate();
    long start = System.currentTimeMillis();
    if (LOGGER.isLoggable(Level.INFO)) {
        LOGGER.info("Inserting into tree...");
    }
    ArrayTupleBuilder tb = new ArrayTupleBuilder(fieldCount);
    ArrayTupleReference tuple = new ArrayTupleReference();
    IIndexAccessor indexAccessor = treeIndex.createAccessor(TestOperationCallback.INSTANCE, TestOperationCallback.INSTANCE);
    int numInserts = 10000;
    for (int i = 0; i < numInserts; i++) {
        int f0 = rnd.nextInt() % numInserts;
        int f1 = i;
        TupleUtils.createIntegerTuple(tb, tuple, f0, f1);
        if (LOGGER.isLoggable(Level.INFO)) {
            if (i % 1000 == 0) {
                LOGGER.info("Inserting " + i + " : " + f0 + " " + f1);
            }
        }
        indexAccessor.insert(tuple);
    }
    long end = System.currentTimeMillis();
    if (LOGGER.isLoggable(Level.INFO)) {
        LOGGER.info(numInserts + " inserts in " + (end - start) + "ms");
    }
    orderedScan(indexAccessor, fieldSerdes);
    diskOrderScan(indexAccessor, fieldSerdes);
    // Build low key.
    ArrayTupleBuilder lowKeyTb = new ArrayTupleBuilder(keyFieldCount);
    ArrayTupleReference lowKey = new ArrayTupleReference();
    TupleUtils.createIntegerTuple(lowKeyTb, lowKey, -1000);
    // Build high key.
    ArrayTupleBuilder highKeyTb = new ArrayTupleBuilder(keyFieldCount);
    ArrayTupleReference highKey = new ArrayTupleReference();
    TupleUtils.createIntegerTuple(highKeyTb, highKey, 1000);
    // Build min filter key.
    ArrayTupleBuilder minFilterTb = new ArrayTupleBuilder(filterFields.length);
    ArrayTupleReference minTuple = new ArrayTupleReference();
    TupleUtils.createIntegerTuple(minFilterTb, minTuple, 400);
    // Build max filter key.
    ArrayTupleBuilder maxFilterTb = new ArrayTupleBuilder(filterFields.length);
    ArrayTupleReference maxTuple = new ArrayTupleReference();
    TupleUtils.createIntegerTuple(maxFilterTb, maxTuple, 500);
    rangeSearch(cmpFactories, indexAccessor, fieldSerdes, lowKey, highKey, minTuple, maxTuple);
    treeIndex.validate();
    treeIndex.deactivate();
    treeIndex.destroy();
}

Example 23 with ISerializerDeserializer

use of org.apache.hyracks.api.dataflow.value.ISerializerDeserializer in project asterixdb by apache.

the class BloomFilterTest method multiFieldTest.

@Test
public void multiFieldTest() throws Exception {
    if (LOGGER.isLoggable(Level.INFO)) {
        LOGGER.info("TESTING BLOOM FILTER");
    }
    IBufferCache bufferCache = harness.getBufferCache();
    int numElements = 10000;
    int[] keyFields = { 2, 4, 1 };
    BloomFilter bf = new BloomFilter(bufferCache, harness.getFileMapProvider(), harness.getFileReference(), keyFields);
    double acceptanleFalsePositiveRate = 0.1;
    int maxBucketsPerElement = BloomCalculations.maxBucketsPerElement(numElements);
    BloomFilterSpecification bloomFilterSpec = BloomCalculations.computeBloomSpec(maxBucketsPerElement, acceptanleFalsePositiveRate);
    bf.create();
    bf.activate();
    IIndexBulkLoader builder = bf.createBuilder(numElements, bloomFilterSpec.getNumHashes(), bloomFilterSpec.getNumBucketsPerElements());
    int fieldCount = 5;
    ISerializerDeserializer[] fieldSerdes = { new UTF8StringSerializerDeserializer(), new UTF8StringSerializerDeserializer(), IntegerSerializerDeserializer.INSTANCE, new UTF8StringSerializerDeserializer(), new UTF8StringSerializerDeserializer() };
    ArrayTupleBuilder tupleBuilder = new ArrayTupleBuilder(fieldCount);
    ArrayTupleReference tuple = new ArrayTupleReference();
    int maxLength = 20;
    ArrayList<String> s1 = new ArrayList<>();
    ArrayList<String> s2 = new ArrayList<>();
    ArrayList<String> s3 = new ArrayList<>();
    ArrayList<String> s4 = new ArrayList<>();
    for (int i = 0; i < numElements; ++i) {
        s1.add(randomString(rnd.nextInt() % maxLength, rnd));
        s2.add(randomString(rnd.nextInt() % maxLength, rnd));
        s3.add(randomString(rnd.nextInt() % maxLength, rnd));
        s4.add(randomString(rnd.nextInt() % maxLength, rnd));
    }
    for (int i = 0; i < numElements; ++i) {
        TupleUtils.createTuple(tupleBuilder, tuple, fieldSerdes, s1.get(i), s2.get(i), i, s3.get(i), s4.get(i));
        builder.add(tuple);
    }
    builder.end();
    long[] hashes = new long[2];
    for (int i = 0; i < numElements; ++i) {
        TupleUtils.createTuple(tupleBuilder, tuple, fieldSerdes, s1.get(i), s2.get(i), i, s3.get(i), s4.get(i));
        Assert.assertTrue(bf.contains(tuple, hashes));
    }
    bf.deactivate();
    bf.destroy();
}

Example 24 with ISerializerDeserializer

use of org.apache.hyracks.api.dataflow.value.ISerializerDeserializer in project asterixdb by apache.

the class MurmurHashForITupleReferenceTest method murmurhashThreeStringFieldsTest.

@Test
public void murmurhashThreeStringFieldsTest() throws Exception {
    if (LOGGER.isLoggable(Level.INFO)) {
        LOGGER.info("TESTING MURMUR HASH THREE STRING FIELDS");
    }
    int fieldCount = 3;
    ISerializerDeserializer[] fieldSerdes = { new UTF8StringSerializerDeserializer(), new UTF8StringSerializerDeserializer(), new UTF8StringSerializerDeserializer() };
    ArrayTupleBuilder tupleBuilder = new ArrayTupleBuilder(fieldCount);
    ArrayTupleReference tuple = new ArrayTupleReference();
    String s1 = randomString(40, rnd);
    String s2 = randomString(60, rnd);
    String s3 = randomString(20, rnd);
    TupleUtils.createTuple(tupleBuilder, tuple, fieldSerdes, s1, s2, s3);
    int[] keyFields = { 2, 0, 1 };
    int length = getTupleSize(tuple, keyFields);
    long[] actuals = new long[NUM_LONG_VARS_FOR_128_BIT_HASH];
    MurmurHash128Bit.hash3_x64_128(tuple, keyFields, 0L, actuals);
    byte[] array = new byte[length];
    ByteBuffer buffer;
    fillArrayWithData(array, keyFields, tuple, length);
    buffer = ByteBuffer.wrap(array);
    long[] expecteds = hash3_x64_128(buffer, 0, length, 0L);
    Assert.assertArrayEquals(expecteds, actuals);
}

Example 25 with ISerializerDeserializer

use of org.apache.hyracks.api.dataflow.value.ISerializerDeserializer in project asterixdb by apache.

the class LSMBTreeTuplesTest method testLSMBTreeTuple.

private void testLSMBTreeTuple(ISerializerDeserializer[] maxFieldSerdes) throws HyracksDataException {
    // Create a tuple with the max-1 fields for checking setFieldCount() of tuple references later.
    ITypeTraits[] maxTypeTraits = SerdeUtils.serdesToTypeTraits(maxFieldSerdes);
    IFieldValueGenerator[] maxFieldGens = DataGenUtils.getFieldGensFromSerdes(maxFieldSerdes, rnd, false);
    // Generate a tuple with random field values.
    Object[] maxFields = new Object[maxFieldSerdes.length];
    for (int j = 0; j < maxFieldSerdes.length; j++) {
        maxFields[j] = maxFieldGens[j].next();
    }
    // Run test for varying number of fields and keys.
    for (int numKeyFields = 1; numKeyFields < maxFieldSerdes.length; numKeyFields++) {
        // Create tuples with varying number of fields, and try to interpret their bytes with the lsmBTreeTuple.
        for (int numFields = numKeyFields; numFields <= maxFieldSerdes.length; numFields++) {
            // Create and write tuple to bytes using an LSMBTreeTupleWriter.
            LSMBTreeTupleWriter maxMatterTupleWriter = new LSMBTreeTupleWriter(maxTypeTraits, numKeyFields, false);
            ITupleReference maxTuple = TupleUtils.createTuple(maxFieldSerdes, (Object[]) maxFields);
            ByteBuffer maxMatterBuf = writeTuple(maxTuple, maxMatterTupleWriter);
            // Tuple reference should work for both matter and antimatter tuples (doesn't matter which factory creates it).
            LSMBTreeTupleReference maxLsmBTreeTuple = (LSMBTreeTupleReference) maxMatterTupleWriter.createTupleReference();
            ISerializerDeserializer[] fieldSerdes = Arrays.copyOfRange(maxFieldSerdes, 0, numFields);
            ITypeTraits[] typeTraits = SerdeUtils.serdesToTypeTraits(fieldSerdes);
            IFieldValueGenerator[] fieldGens = DataGenUtils.getFieldGensFromSerdes(fieldSerdes, rnd, false);
            // Generate a tuple with random field values.
            Object[] fields = new Object[numFields];
            for (int j = 0; j < numFields; j++) {
                fields[j] = fieldGens[j].next();
            }
            // Create and write tuple to bytes using an LSMBTreeTupleWriter.
            ITupleReference tuple = TupleUtils.createTuple(fieldSerdes, (Object[]) fields);
            LSMBTreeTupleWriter matterTupleWriter = new LSMBTreeTupleWriter(typeTraits, numKeyFields, false);
            LSMBTreeTupleWriter antimatterTupleWriter = new LSMBTreeTupleWriter(typeTraits, numKeyFields, true);
            LSMBTreeCopyTupleWriter copyTupleWriter = new LSMBTreeCopyTupleWriter(typeTraits, numKeyFields);
            ByteBuffer matterBuf = writeTuple(tuple, matterTupleWriter);
            ByteBuffer antimatterBuf = writeTuple(tuple, antimatterTupleWriter);
            // The antimatter buf should only contain keys, sanity check the size.
            if (numFields != numKeyFields) {
                assertTrue(antimatterBuf.array().length < matterBuf.array().length);
            }
            // Tuple reference should work for both matter and antimatter tuples (doesn't matter which factory creates it).
            LSMBTreeTupleReference lsmBTreeTuple = (LSMBTreeTupleReference) matterTupleWriter.createTupleReference();
            // Repeat the block inside to test that repeated resetting to matter/antimatter tuples works.
            for (int r = 0; r < 4; r++) {
                // Check matter tuple with lsmBTreeTuple.
                lsmBTreeTuple.resetByTupleOffset(matterBuf.array(), 0);
                checkTuple(lsmBTreeTuple, numFields, false, fieldSerdes, fields);
                // Create a copy using copyTupleWriter, and verify again.
                ByteBuffer copyMatterBuf = writeTuple(lsmBTreeTuple, copyTupleWriter);
                lsmBTreeTuple.resetByTupleOffset(copyMatterBuf.array(), 0);
                checkTuple(lsmBTreeTuple, numFields, false, fieldSerdes, fields);
                // Check antimatter tuple with lsmBTreeTuple.
                lsmBTreeTuple.resetByTupleOffset(antimatterBuf.array(), 0);
                // Should only contain keys.
                checkTuple(lsmBTreeTuple, numKeyFields, true, fieldSerdes, fields);
                // Create a copy using copyTupleWriter, and verify again.
                ByteBuffer copyAntimatterBuf = writeTuple(lsmBTreeTuple, copyTupleWriter);
                lsmBTreeTuple.resetByTupleOffset(copyAntimatterBuf.array(), 0);
                // Should only contain keys.
                checkTuple(lsmBTreeTuple, numKeyFields, true, fieldSerdes, fields);
                // Check matter tuple with maxLsmBTreeTuple.
                // We should be able to manually set a prefix of the fields
                // (the passed type traits in the tuple factory's constructor).
                maxLsmBTreeTuple.setFieldCount(numFields);
                maxLsmBTreeTuple.resetByTupleOffset(matterBuf.array(), 0);
                checkTuple(maxLsmBTreeTuple, numFields, false, fieldSerdes, fields);
                // Check antimatter tuple with maxLsmBTreeTuple.
                maxLsmBTreeTuple.resetByTupleOffset(antimatterBuf.array(), 0);
                // Should only contain keys.
                checkTuple(maxLsmBTreeTuple, numKeyFields, true, fieldSerdes, fields);
                // Resetting maxLsmBTreeTuple should set its field count to
                // maxFieldSerdes.length, based on the its type traits.
                maxLsmBTreeTuple.resetByTupleOffset(maxMatterBuf.array(), 0);
                checkTuple(maxLsmBTreeTuple, maxFieldSerdes.length, false, maxFieldSerdes, maxFields);
            }
        }
    }
}