Examples with DeepEqualAssessor org.apache.asterix.runtime.evaluators.comparisons.DeepEqualAssessor used on opensource projects

Example 1 with DeepEqualAssessor

use of org.apache.asterix.runtime.evaluators.comparisons.DeepEqualAssessor in project asterixdb by apache.

the class DeepEqualityDescriptor method createEvaluatorFactory.

@Override
public IScalarEvaluatorFactory createEvaluatorFactory(final IScalarEvaluatorFactory[] args) {
    final IScalarEvaluatorFactory evalFactoryLeft = args[0];
    final IScalarEvaluatorFactory evalFactoryRight = args[1];
    return new IScalarEvaluatorFactory() {

        private static final long serialVersionUID = 1L;

        @SuppressWarnings("unchecked")
        private final ISerializerDeserializer<ABoolean> boolSerde = SerializerDeserializerProvider.INSTANCE.getSerializerDeserializer(BuiltinType.ABOOLEAN);

        @Override
        public IScalarEvaluator createScalarEvaluator(IHyracksTaskContext ctx) throws HyracksDataException {
            final ArrayBackedValueStorage resultStorage = new ArrayBackedValueStorage();
            final DataOutput out = resultStorage.getDataOutput();
            final IScalarEvaluator evalLeft = evalFactoryLeft.createScalarEvaluator(ctx);
            final IScalarEvaluator evalRight = evalFactoryRight.createScalarEvaluator(ctx);
            return new IScalarEvaluator() {

                private final DeepEqualAssessor deepEqualAssessor = new DeepEqualAssessor();

                private final PointableAllocator allocator = new PointableAllocator();

                private final IVisitablePointable pointableLeft = allocator.allocateFieldValue(inputTypeLeft);

                private final IVisitablePointable pointableRight = allocator.allocateFieldValue(inputTypeRight);

                @Override
                public void evaluate(IFrameTupleReference tuple, IPointable result) throws HyracksDataException {
                    try {
                        evalLeft.evaluate(tuple, pointableLeft);
                        evalRight.evaluate(tuple, pointableRight);
                        // Using deep equality assessment to assess the equality of the two values
                        boolean isEqual = deepEqualAssessor.isEqual(pointableLeft, pointableRight);
                        ABoolean resultBit = isEqual ? ABoolean.TRUE : ABoolean.FALSE;
                        resultStorage.reset();
                        boolSerde.serialize(resultBit, out);
                        result.set(resultStorage);
                    } catch (Exception ioe) {
                        throw new HyracksDataException(ioe);
                    }
                }
            };
        }
    };
}

Example 2 with DeepEqualAssessor

use of org.apache.asterix.runtime.evaluators.comparisons.DeepEqualAssessor in project asterixdb by apache.

the class RecordMergeDescriptor 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 {
            final PointableAllocator pa = new PointableAllocator();
            final IVisitablePointable vp0 = pa.allocateRecordValue(inRecType0);
            final IVisitablePointable vp1 = pa.allocateRecordValue(inRecType1);
            final IPointable argPtr0 = new VoidPointable();
            final IPointable argPtr1 = new VoidPointable();
            final IScalarEvaluator eval0 = args[0].createScalarEvaluator(ctx);
            final IScalarEvaluator eval1 = args[1].createScalarEvaluator(ctx);
            final List<RecordBuilder> rbStack = new ArrayList<>();
            final ArrayBackedValueStorage tabvs = new ArrayBackedValueStorage();
            return new IScalarEvaluator() {

                private final RuntimeRecordTypeInfo runtimeRecordTypeInfo = new RuntimeRecordTypeInfo();

                private final DeepEqualAssessor deepEqualAssesor = new DeepEqualAssessor();

                private ArrayBackedValueStorage resultStorage = new ArrayBackedValueStorage();

                private DataOutput out = resultStorage.getDataOutput();

                @Override
                public void evaluate(IFrameTupleReference tuple, IPointable result) throws HyracksDataException {
                    resultStorage.reset();
                    eval0.evaluate(tuple, argPtr0);
                    eval1.evaluate(tuple, argPtr1);
                    vp0.set(argPtr0);
                    vp1.set(argPtr1);
                    ARecordVisitablePointable rp0 = (ARecordVisitablePointable) vp0;
                    ARecordVisitablePointable rp1 = (ARecordVisitablePointable) vp1;
                    try {
                        mergeFields(outRecType, rp0, rp1, true, 0);
                        rbStack.get(0).write(out, true);
                    } catch (IOException | AsterixException e) {
                        throw new HyracksDataException(e);
                    }
                    result.set(resultStorage);
                }

                private void mergeFields(ARecordType combinedType, ARecordVisitablePointable leftRecord, ARecordVisitablePointable rightRecord, boolean openFromParent, int nestedLevel) throws IOException, AsterixException, HyracksDataException {
                    if (rbStack.size() < (nestedLevel + 1)) {
                        rbStack.add(new RecordBuilder());
                    }
                    rbStack.get(nestedLevel).reset(combinedType);
                    rbStack.get(nestedLevel).init();
                    //Add all fields from left record
                    for (int i = 0; i < leftRecord.getFieldNames().size(); i++) {
                        IVisitablePointable leftName = leftRecord.getFieldNames().get(i);
                        IVisitablePointable leftValue = leftRecord.getFieldValues().get(i);
                        IVisitablePointable leftType = leftRecord.getFieldTypeTags().get(i);
                        boolean foundMatch = false;
                        for (int j = 0; j < rightRecord.getFieldNames().size(); j++) {
                            IVisitablePointable rightName = rightRecord.getFieldNames().get(j);
                            IVisitablePointable rightValue = rightRecord.getFieldValues().get(j);
                            IVisitablePointable rightType = rightRecord.getFieldTypeTags().get(j);
                            // Check if same fieldname
                            if (PointableHelper.isEqual(leftName, rightName) && !deepEqualAssesor.isEqual(leftValue, rightValue)) {
                                //Field was found on the right and are subrecords, merge them
                                if (PointableHelper.sameType(ATypeTag.OBJECT, rightType) && PointableHelper.sameType(ATypeTag.OBJECT, leftType)) {
                                    //We are merging two sub records
                                    addFieldToSubRecord(combinedType, leftName, leftValue, rightValue, openFromParent, nestedLevel);
                                    foundMatch = true;
                                } else {
                                    throw new RuntimeDataException(ErrorCode.DUPLICATE_FIELD_NAME, getIdentifier());
                                }
                            }
                        }
                        if (!foundMatch) {
                            addFieldToSubRecord(combinedType, leftName, leftValue, null, openFromParent, nestedLevel);
                        }
                    }
                    //Repeat for right side (ignoring duplicates this time)
                    for (int j = 0; j < rightRecord.getFieldNames().size(); j++) {
                        IVisitablePointable rightName = rightRecord.getFieldNames().get(j);
                        IVisitablePointable rightValue = rightRecord.getFieldValues().get(j);
                        boolean foundMatch = false;
                        for (int i = 0; i < leftRecord.getFieldNames().size(); i++) {
                            IVisitablePointable leftName = leftRecord.getFieldNames().get(i);
                            if (rightName.equals(leftName)) {
                                foundMatch = true;
                            }
                        }
                        if (!foundMatch) {
                            addFieldToSubRecord(combinedType, rightName, rightValue, null, openFromParent, nestedLevel);
                        }
                    }
                }

                /*
                     * Takes in a record type, field name, and the field values (which are record) from two records
                     * Merges them into one record of combinedType
                     * And adds that record as a field to the Record in subrb
                     * the second value can be null, indicated that you just add the value of left as a field to subrb
                     *
                     */
                private void addFieldToSubRecord(ARecordType combinedType, IVisitablePointable fieldNamePointable, IVisitablePointable leftValue, IVisitablePointable rightValue, boolean openFromParent, int nestedLevel) throws IOException, AsterixException, HyracksDataException {
                    runtimeRecordTypeInfo.reset(combinedType);
                    int pos = runtimeRecordTypeInfo.getFieldIndex(fieldNamePointable.getByteArray(), fieldNamePointable.getStartOffset() + 1, fieldNamePointable.getLength() - 1);
                    //Add the merged field
                    if (combinedType != null && pos >= 0) {
                        if (rightValue == null) {
                            rbStack.get(nestedLevel).addField(pos, leftValue);
                        } else {
                            mergeFields((ARecordType) combinedType.getFieldTypes()[pos], (ARecordVisitablePointable) leftValue, (ARecordVisitablePointable) rightValue, false, nestedLevel + 1);
                            tabvs.reset();
                            rbStack.get(nestedLevel + 1).write(tabvs.getDataOutput(), true);
                            rbStack.get(nestedLevel).addField(pos, tabvs);
                        }
                    } else {
                        if (rightValue == null) {
                            rbStack.get(nestedLevel).addField(fieldNamePointable, leftValue);
                        } else {
                            mergeFields(DefaultOpenFieldType.NESTED_OPEN_RECORD_TYPE, (ARecordVisitablePointable) leftValue, (ARecordVisitablePointable) rightValue, false, nestedLevel + 1);
                            tabvs.reset();
                            rbStack.get(nestedLevel + 1).write(tabvs.getDataOutput(), true);
                            rbStack.get(nestedLevel).addField(fieldNamePointable, tabvs);
                        }
                    }
                }
            };
        }
    };
}