| package edu.uci.ics.asterix.runtime.evaluators.functions; |
| |
| import java.io.DataOutput; |
| import java.io.IOException; |
| |
| import edu.uci.ics.asterix.dataflow.data.nontagged.Coordinate; |
| import edu.uci.ics.asterix.dataflow.data.nontagged.serde.ADoubleSerializerDeserializer; |
| import edu.uci.ics.asterix.dataflow.data.nontagged.serde.APointSerializerDeserializer; |
| import edu.uci.ics.asterix.formats.nontagged.AqlSerializerDeserializerProvider; |
| import edu.uci.ics.asterix.om.base.ACircle; |
| import edu.uci.ics.asterix.om.base.AMutableCircle; |
| import edu.uci.ics.asterix.om.base.AMutablePoint; |
| import edu.uci.ics.asterix.om.functions.AsterixBuiltinFunctions; |
| import edu.uci.ics.asterix.om.functions.IFunctionDescriptor; |
| import edu.uci.ics.asterix.om.functions.IFunctionDescriptorFactory; |
| import edu.uci.ics.asterix.om.types.ATypeTag; |
| import edu.uci.ics.asterix.om.types.BuiltinType; |
| import edu.uci.ics.asterix.om.types.EnumDeserializer; |
| import edu.uci.ics.asterix.runtime.evaluators.base.AbstractScalarFunctionDynamicDescriptor; |
| import edu.uci.ics.hyracks.algebricks.common.exceptions.AlgebricksException; |
| import edu.uci.ics.hyracks.algebricks.core.algebra.functions.FunctionIdentifier; |
| import edu.uci.ics.hyracks.algebricks.runtime.base.ICopyEvaluator; |
| import edu.uci.ics.hyracks.algebricks.runtime.base.ICopyEvaluatorFactory; |
| import edu.uci.ics.hyracks.api.dataflow.value.ISerializerDeserializer; |
| import edu.uci.ics.hyracks.data.std.api.IDataOutputProvider; |
| import edu.uci.ics.hyracks.data.std.util.ArrayBackedValueStorage; |
| import edu.uci.ics.hyracks.dataflow.common.data.accessors.IFrameTupleReference; |
| |
| public class CreateCircleDescriptor extends AbstractScalarFunctionDynamicDescriptor { |
| |
| private static final long serialVersionUID = 1L; |
| |
| private static final byte SER_DOUBLE_TYPE_TAG = ATypeTag.DOUBLE.serialize(); |
| private static final byte SER_POINT_TYPE_TAG = ATypeTag.POINT.serialize(); |
| |
| public static final IFunctionDescriptorFactory FACTORY = new IFunctionDescriptorFactory() { |
| public IFunctionDescriptor createFunctionDescriptor() { |
| return new CreateCircleDescriptor(); |
| } |
| }; |
| |
| @Override |
| public ICopyEvaluatorFactory createEvaluatorFactory(final ICopyEvaluatorFactory[] args) throws AlgebricksException { |
| return new ICopyEvaluatorFactory() { |
| private static final long serialVersionUID = 1L; |
| |
| @Override |
| public ICopyEvaluator createEvaluator(final IDataOutputProvider output) throws AlgebricksException { |
| return new ICopyEvaluator() { |
| |
| private DataOutput out = output.getDataOutput(); |
| |
| private ArrayBackedValueStorage outInput0 = new ArrayBackedValueStorage(); |
| private ArrayBackedValueStorage outInput1 = new ArrayBackedValueStorage(); |
| private ICopyEvaluator eval0 = args[0].createEvaluator(outInput0); |
| private ICopyEvaluator eval1 = args[1].createEvaluator(outInput1); |
| private AMutablePoint aPoint = new AMutablePoint(0, 0); |
| private AMutableCircle aCircle = new AMutableCircle(null, 0); |
| @SuppressWarnings("unchecked") |
| private ISerializerDeserializer<ACircle> circleSerde = AqlSerializerDeserializerProvider.INSTANCE |
| .getSerializerDeserializer(BuiltinType.ACIRCLE); |
| |
| @Override |
| public void evaluate(IFrameTupleReference tuple) throws AlgebricksException { |
| outInput0.reset(); |
| eval0.evaluate(tuple); |
| outInput1.reset(); |
| eval1.evaluate(tuple); |
| |
| // Type check: (point, double) |
| if (outInput0.getByteArray()[0] != SER_POINT_TYPE_TAG |
| || outInput1.getByteArray()[0] != SER_DOUBLE_TYPE_TAG) { |
| throw new AlgebricksException(AsterixBuiltinFunctions.CREATE_CIRCLE.getName() |
| + ": expects input type (POINT, DOUBLE) but got (" |
| + EnumDeserializer.ATYPETAGDESERIALIZER.deserialize(outInput0.getByteArray()[0]) |
| + ", " |
| + EnumDeserializer.ATYPETAGDESERIALIZER.deserialize(outInput1.getByteArray()[0]) |
| + ")"); |
| } |
| |
| try { |
| aPoint.setValue(ADoubleSerializerDeserializer.getDouble(outInput0.getByteArray(), |
| APointSerializerDeserializer.getCoordinateOffset(Coordinate.X)), |
| ADoubleSerializerDeserializer.getDouble(outInput0.getByteArray(), |
| APointSerializerDeserializer.getCoordinateOffset(Coordinate.Y))); |
| aCircle.setValue(aPoint, |
| ADoubleSerializerDeserializer.getDouble(outInput1.getByteArray(), 1)); |
| circleSerde.serialize(aCircle, out); |
| } catch (IOException e1) { |
| throw new AlgebricksException(e1); |
| } |
| } |
| }; |
| } |
| }; |
| } |
| |
| @Override |
| public FunctionIdentifier getIdentifier() { |
| return AsterixBuiltinFunctions.CREATE_CIRCLE; |
| } |
| |
| } |