Examples with IScalarEvaluatorFactory org.apache.hyracks.algebricks.runtime.base.IScalarEvaluatorFactory used on opensource projects

Example 11 with IScalarEvaluatorFactory

use of org.apache.hyracks.algebricks.runtime.base.IScalarEvaluatorFactory in project asterixdb by apache.

the class StringLengthDescriptor 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 AMutableInt64 result = new AMutableInt64(0);

                private ArrayBackedValueStorage resultStorage = new ArrayBackedValueStorage();

                private DataOutput out = resultStorage.getDataOutput();

                private IPointable inputArg = new VoidPointable();

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

                @SuppressWarnings("unchecked")
                private ISerializerDeserializer<AInt64> int64Serde = SerializerDeserializerProvider.INSTANCE.getSerializerDeserializer(BuiltinType.AINT64);

                @Override
                public void evaluate(IFrameTupleReference tuple, IPointable resultPointable) throws HyracksDataException {
                    try {
                        resultStorage.reset();
                        eval.evaluate(tuple, inputArg);
                        byte[] serString = inputArg.getByteArray();
                        int offset = inputArg.getStartOffset();
                        if (serString[offset] == ATypeTag.SERIALIZED_STRING_TYPE_TAG) {
                            int len = UTF8StringUtil.getUTFLength(serString, offset + 1);
                            result.setValue(len);
                            int64Serde.serialize(result, out);
                        } else {
                            throw new TypeMismatchException(getIdentifier(), 0, serString[offset], ATypeTag.SERIALIZED_STRING_TYPE_TAG);
                        }
                        resultPointable.set(resultStorage);
                    } catch (IOException e1) {
                        throw new HyracksDataException(e1);
                    }
                }
            };
        }
    };
}

Example 12 with IScalarEvaluatorFactory

use of org.apache.hyracks.algebricks.runtime.base.IScalarEvaluatorFactory in project asterixdb by apache.

the class StringRTrim2Descriptor method createEvaluatorFactory.

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

        private static final long serialVersionUID = 1L;

        @Override
        public IScalarEvaluator createScalarEvaluator(IHyracksTaskContext ctx) throws HyracksDataException {
            return new AbstractBinaryStringStringEval(ctx, args[0], args[1], StringRTrim2Descriptor.this.getIdentifier()) {

                private StringTrimmer stringTrimmer = new StringTrimmer(resultBuilder, resultArray);

                @Override
                protected void compute(UTF8StringPointable srcPtr, UTF8StringPointable patternPtr, UTF8StringPointable resultStrPtr) throws IOException {
                    stringTrimmer.build(patternPtr);
                    stringTrimmer.trim(srcPtr, resultStrPtr, false, true);
                }
            };
        }
    };
}

Example 13 with IScalarEvaluatorFactory

use of org.apache.hyracks.algebricks.runtime.base.IScalarEvaluatorFactory in project asterixdb by apache.

the class StringRepeatDescriptor 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() {

                // Argument evaluators.
                private IScalarEvaluator evalString = args[0].createScalarEvaluator(ctx);

                private IScalarEvaluator evalStart = args[1].createScalarEvaluator(ctx);

                // Argument pointers.
                private IPointable argString = new VoidPointable();

                private IPointable argNumber = new VoidPointable();

                // For outputting the result.
                private ArrayBackedValueStorage resultStorage = new ArrayBackedValueStorage();

                private DataOutput out = resultStorage.getDataOutput();

                private byte[] tempLengthArray = new byte[5];

                @Override
                public void evaluate(IFrameTupleReference tuple, IPointable result) throws HyracksDataException {
                    resultStorage.reset();
                    // Calls argument evaluators.
                    evalString.evaluate(tuple, argString);
                    evalStart.evaluate(tuple, argNumber);
                    // Gets the repeating times.
                    byte[] bytes = argNumber.getByteArray();
                    int offset = argNumber.getStartOffset();
                    int repeatingTimes = ATypeHierarchy.getIntegerValue(getIdentifier().getName(), 1, bytes, offset);
                    // Checks repeatingTimes. It should be a non-negative value.
                    if (repeatingTimes < 0) {
                        throw new RuntimeDataException(ErrorCode.NEGATIVE_VALUE, getIdentifier(), 1, repeatingTimes);
                    }
                    // Gets the input string.
                    bytes = argString.getByteArray();
                    offset = argString.getStartOffset();
                    // Checks the type of the string argument.
                    if (bytes[offset] != ATypeTag.SERIALIZED_STRING_TYPE_TAG) {
                        throw new TypeMismatchException(getIdentifier(), 0, bytes[offset], ATypeTag.SERIALIZED_STRING_TYPE_TAG);
                    }
                    // Calculates the result string length.
                    int inputLen = UTF8StringUtil.getUTFLength(bytes, offset + 1);
                    // Can throw overflow exception.
                    int resultLen = Math.multiplyExact(inputLen, repeatingTimes);
                    int cbytes = UTF8StringUtil.encodeUTF8Length(resultLen, tempLengthArray, 0);
                    // Writes the output string.
                    int inputStringStart = offset + 1 + UTF8StringUtil.getNumBytesToStoreLength(inputLen);
                    try {
                        out.writeByte(ATypeTag.SERIALIZED_STRING_TYPE_TAG);
                        out.write(tempLengthArray, 0, cbytes);
                        for (int numRepeats = 0; numRepeats < repeatingTimes; ++numRepeats) {
                            out.write(bytes, inputStringStart, inputLen);
                        }
                    } catch (IOException e) {
                        throw new HyracksDataException(e);
                    }
                    result.set(resultStorage);
                }
            };
        }
    };
}

Example 14 with IScalarEvaluatorFactory

use of org.apache.hyracks.algebricks.runtime.base.IScalarEvaluatorFactory in project asterixdb by apache.

the class SubstringAfterDescriptor 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 array0 = new VoidPointable();

                private IPointable array1 = new VoidPointable();

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

                private IScalarEvaluator evalPattern = args[1].createScalarEvaluator(ctx);

                private final GrowableArray array = new GrowableArray();

                private final UTF8StringBuilder builder = new UTF8StringBuilder();

                private final UTF8StringPointable stringPtr = new UTF8StringPointable();

                private final UTF8StringPointable patternPtr = new UTF8StringPointable();

                @Override
                public void evaluate(IFrameTupleReference tuple, IPointable result) throws HyracksDataException {
                    resultStorage.reset();
                    evalString.evaluate(tuple, array0);
                    byte[] src = array0.getByteArray();
                    int srcOffset = array0.getStartOffset();
                    int srcLen = array0.getLength();
                    evalPattern.evaluate(tuple, array1);
                    byte[] pattern = array1.getByteArray();
                    int patternOffset = array1.getStartOffset();
                    int patternLen = array1.getLength();
                    if (src[srcOffset] != ATypeTag.SERIALIZED_STRING_TYPE_TAG) {
                        throw new TypeMismatchException(getIdentifier(), 0, src[srcOffset], ATypeTag.SERIALIZED_STRING_TYPE_TAG);
                    }
                    if (pattern[patternOffset] != ATypeTag.SERIALIZED_STRING_TYPE_TAG) {
                        throw new TypeMismatchException(getIdentifier(), 1, pattern[patternOffset], ATypeTag.SERIALIZED_STRING_TYPE_TAG);
                    }
                    try {
                        stringPtr.set(src, srcOffset + 1, srcLen - 1);
                        patternPtr.set(pattern, patternOffset + 1, patternLen - 1);
                        array.reset();
                        UTF8StringPointable.substrAfter(stringPtr, patternPtr, builder, array);
                        out.writeByte(ATypeTag.SERIALIZED_STRING_TYPE_TAG);
                        out.write(array.getByteArray(), 0, array.getLength());
                    } catch (IOException e) {
                        throw new HyracksDataException(e);
                    }
                    result.set(resultStorage);
                }
            };
        }
    };
}

Example 15 with IScalarEvaluatorFactory

use of org.apache.hyracks.algebricks.runtime.base.IScalarEvaluatorFactory in project asterixdb by apache.

the class UUIDDescriptor method createEvaluatorFactory.

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

        private static final long serialVersionUID = 1L;

        @SuppressWarnings("unchecked")
        private final ISerializerDeserializer<AUUID> uuidSerDe = SerializerDeserializerProvider.INSTANCE.getSerializerDeserializer(BuiltinType.AUUID);

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

                private final ArrayBackedValueStorage resultStorage = new ArrayBackedValueStorage();

                private final DataOutput output = resultStorage.getDataOutput();

                private final AGeneratedUUID uuid = new AGeneratedUUID();

                @Override
                public void evaluate(IFrameTupleReference tuple, IPointable result) throws HyracksDataException {
                    uuid.nextUUID();
                    resultStorage.reset();
                    uuidSerDe.serialize(uuid, output);
                    result.set(resultStorage);
                }
            };
        }
    };
}