| 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.AMutablePoint; |
| import edu.uci.ics.asterix.om.base.AMutableRectangle; |
| import edu.uci.ics.asterix.om.base.ANull; |
| import edu.uci.ics.asterix.om.base.ARectangle; |
| 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.common.exceptions.NotImplementedException; |
| 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 SpatialCellDescriptor extends AbstractScalarFunctionDynamicDescriptor { |
| |
| private static final long serialVersionUID = 1L; |
| public static final IFunctionDescriptorFactory FACTORY = new IFunctionDescriptorFactory() { |
| public IFunctionDescriptor createFunctionDescriptor() { |
| return new SpatialCellDescriptor(); |
| } |
| }; |
| |
| @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 final DataOutput out = output.getDataOutput(); |
| |
| private final ArrayBackedValueStorage outInput0 = new ArrayBackedValueStorage(); |
| private final ArrayBackedValueStorage outInput1 = new ArrayBackedValueStorage(); |
| private final ArrayBackedValueStorage outInput2 = new ArrayBackedValueStorage(); |
| private final ArrayBackedValueStorage outInput3 = new ArrayBackedValueStorage(); |
| private final ICopyEvaluator eval0 = args[0].createEvaluator(outInput0); |
| private final ICopyEvaluator eval1 = args[1].createEvaluator(outInput1); |
| private final ICopyEvaluator eval2 = args[2].createEvaluator(outInput2); |
| private final ICopyEvaluator eval3 = args[3].createEvaluator(outInput3); |
| private final AMutableRectangle aRectangle = new AMutableRectangle(null, null); |
| private final AMutablePoint[] aPoint = { new AMutablePoint(0, 0), new AMutablePoint(0, 0) }; |
| |
| @SuppressWarnings("unchecked") |
| private final ISerializerDeserializer<ANull> nullSerde = AqlSerializerDeserializerProvider.INSTANCE |
| .getSerializerDeserializer(BuiltinType.ANULL); |
| @SuppressWarnings("unchecked") |
| private final ISerializerDeserializer<ARectangle> rectangleSerde = AqlSerializerDeserializerProvider.INSTANCE |
| .getSerializerDeserializer(BuiltinType.ARECTANGLE); |
| |
| @Override |
| public void evaluate(IFrameTupleReference tuple) throws AlgebricksException { |
| outInput0.reset(); |
| eval0.evaluate(tuple); |
| outInput1.reset(); |
| eval1.evaluate(tuple); |
| outInput2.reset(); |
| eval2.evaluate(tuple); |
| outInput3.reset(); |
| eval3.evaluate(tuple); |
| |
| try { |
| ATypeTag tag = EnumDeserializer.ATYPETAGDESERIALIZER |
| .deserialize(outInput0.getByteArray()[0]); |
| if (tag == ATypeTag.POINT) { |
| double xLoc = ADoubleSerializerDeserializer.getDouble(outInput0.getByteArray(), |
| APointSerializerDeserializer.getCoordinateOffset(Coordinate.X)); |
| double yLoc = ADoubleSerializerDeserializer.getDouble(outInput0.getByteArray(), |
| APointSerializerDeserializer.getCoordinateOffset(Coordinate.Y)); |
| |
| double xOrigin = ADoubleSerializerDeserializer.getDouble(outInput1.getByteArray(), |
| APointSerializerDeserializer.getCoordinateOffset(Coordinate.X)); |
| double yOrigin = ADoubleSerializerDeserializer.getDouble(outInput1.getByteArray(), |
| APointSerializerDeserializer.getCoordinateOffset(Coordinate.Y)); |
| |
| double xInc = ADoubleSerializerDeserializer.getDouble(outInput2.getByteArray(), 1); |
| double yInc = ADoubleSerializerDeserializer.getDouble(outInput3.getByteArray(), 1); |
| |
| double x = xOrigin + (Math.floor((xLoc - xOrigin) / xInc)) * xInc; |
| double y = yOrigin + (Math.floor((yLoc - yOrigin) / yInc)) * yInc; |
| aPoint[0].setValue(x, y); |
| aPoint[1].setValue(x + xInc, y + yInc); |
| aRectangle.setValue(aPoint[0], aPoint[1]); |
| rectangleSerde.serialize(aRectangle, out); |
| } else if (tag == ATypeTag.NULL) { |
| nullSerde.serialize(ANull.NULL, out); |
| } else { |
| throw new NotImplementedException("spatial-cell does not support the type: " + tag |
| + " It is only implemented for POINT."); |
| } |
| } catch (IOException e1) { |
| throw new AlgebricksException(e1); |
| } |
| } |
| }; |
| } |
| }; |
| } |
| |
| @Override |
| public FunctionIdentifier getIdentifier() { |
| return AsterixBuiltinFunctions.SPATIAL_CELL; |
| } |
| |
| } |