content: /*
   * Licensed to the Apache Software Foundation (ASF) under one
   * or more contributor license agreements.  See the NOTICE file
   * distributed with this work for additional information
   * regarding copyright ownership.  The ASF licenses this file
   * to you under the Apache License, Version 2.0 (the
   * "License"); you may not use this file except in compliance
   * with the License.  You may obtain a copy of the License at
   *
   *   http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing,
   * software distributed under the License is distributed on an
   * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
   * KIND, either express or implied.  See the License for the
   * specific language governing permissions and limitations
   * under the License.
   */
  package org.apache.asterix.runtime.evaluators.functions;
  
  import java.io.DataOutput;
  import java.io.IOException;
  
  import org.apache.asterix.common.annotations.MissingNullInOutFunction;
  import org.apache.asterix.dataflow.data.nontagged.Coordinate;
  import org.apache.asterix.dataflow.data.nontagged.serde.ADoubleSerializerDeserializer;
  import org.apache.asterix.dataflow.data.nontagged.serde.APointSerializerDeserializer;
  import org.apache.asterix.formats.nontagged.SerializerDeserializerProvider;
  import org.apache.asterix.om.base.AMutablePoint;
  import org.apache.asterix.om.base.AMutableRectangle;
  import org.apache.asterix.om.base.ARectangle;
  import org.apache.asterix.om.functions.BuiltinFunctions;
  import org.apache.asterix.om.functions.IFunctionDescriptorFactory;
  import org.apache.asterix.om.types.ATypeTag;
  import org.apache.asterix.om.types.BuiltinType;
  import org.apache.asterix.runtime.evaluators.base.AbstractScalarFunctionDynamicDescriptor;
  import org.apache.asterix.runtime.exceptions.TypeMismatchException;
  import org.apache.hyracks.algebricks.core.algebra.functions.FunctionIdentifier;
  import org.apache.hyracks.algebricks.runtime.base.IScalarEvaluator;
  import org.apache.hyracks.algebricks.runtime.base.IScalarEvaluatorFactory;
  import org.apache.hyracks.api.context.IEvaluatorContext;
  import org.apache.hyracks.api.dataflow.value.ISerializerDeserializer;
  import org.apache.hyracks.api.exceptions.HyracksDataException;
  import org.apache.hyracks.data.std.api.IPointable;
  import org.apache.hyracks.data.std.primitive.VoidPointable;
  import org.apache.hyracks.data.std.util.ArrayBackedValueStorage;
  import org.apache.hyracks.dataflow.common.data.accessors.IFrameTupleReference;
  
  @MissingNullInOutFunction
  public class SpatialCellDescriptor extends AbstractScalarFunctionDynamicDescriptor {
  
      private static final long serialVersionUID = 1L;
      public static final IFunctionDescriptorFactory FACTORY = SpatialCellDescriptor::new;
  
      @Override
      public IScalarEvaluatorFactory createEvaluatorFactory(final IScalarEvaluatorFactory[] args) {
          return new IScalarEvaluatorFactory() {
              private static final long serialVersionUID = 1L;
  
              @Override
              public IScalarEvaluator createScalarEvaluator(final IEvaluatorContext ctx) throws HyracksDataException {
                  return new IScalarEvaluator() {
  
                      private final ArrayBackedValueStorage resultStorage = new ArrayBackedValueStorage();
                      private final DataOutput out = resultStorage.getDataOutput();
                      private final IPointable inputArg0 = new VoidPointable();
                      private final IPointable inputArg1 = new VoidPointable();
                      private final IPointable inputArg2 = new VoidPointable();
                      private final IPointable inputArg3 = new VoidPointable();
                      private final IScalarEvaluator eval0 = args[0].createScalarEvaluator(ctx);
                      private final IScalarEvaluator eval1 = args[1].createScalarEvaluator(ctx);
                      private final IScalarEvaluator eval2 = args[2].createScalarEvaluator(ctx);
                      private final IScalarEvaluator eval3 = args[3].createScalarEvaluator(ctx);
                      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<ARectangle> rectangleSerde =
                              SerializerDeserializerProvider.INSTANCE.getSerializerDeserializer(BuiltinType.ARECTANGLE);
  
                      @Override
                      public void evaluate(IFrameTupleReference tuple, IPointable result) throws HyracksDataException {
                          resultStorage.reset();
                          eval0.evaluate(tuple, inputArg0);
                          eval1.evaluate(tuple, inputArg1);
                          eval2.evaluate(tuple, inputArg2);
                          eval3.evaluate(tuple, inputArg3);
  
                          if (PointableHelper.checkAndSetMissingOrNull(result, inputArg0, inputArg1, inputArg2,
                                  inputArg3)) {
                              return;
                          }
  
                          byte[] bytes0 = inputArg0.getByteArray();
                          byte[] bytes1 = inputArg1.getByteArray();
                          byte[] bytes2 = inputArg2.getByteArray();
                          byte[] bytes3 = inputArg3.getByteArray();
                          int offset0 = inputArg0.getStartOffset();
                          int offset1 = inputArg1.getStartOffset();
                          int offset2 = inputArg2.getStartOffset();
                          int offset3 = inputArg3.getStartOffset();
  
                          try {
                              byte tag0 = bytes0[offset0];
                              byte tag1 = bytes1[offset1];
                              byte tag2 = bytes2[offset2];
                              byte tag3 = bytes3[offset3];
                              if (tag0 == ATypeTag.SERIALIZED_POINT_TYPE_TAG && tag1 == ATypeTag.SERIALIZED_POINT_TYPE_TAG
                                      && tag2 == ATypeTag.SERIALIZED_DOUBLE_TYPE_TAG
                                      && tag3 == ATypeTag.SERIALIZED_DOUBLE_TYPE_TAG) {
                                  double xLoc = ADoubleSerializerDeserializer.getDouble(bytes0,
                                          offset0 + 1 + APointSerializerDeserializer.getCoordinateOffset(Coordinate.X));
                                  double yLoc = ADoubleSerializerDeserializer.getDouble(bytes0,
                                          offset0 + 1 + APointSerializerDeserializer.getCoordinateOffset(Coordinate.Y));
  
                                  double xOrigin = ADoubleSerializerDeserializer.getDouble(bytes1,
                                          offset1 + 1 + APointSerializerDeserializer.getCoordinateOffset(Coordinate.X));
                                  double yOrigin = ADoubleSerializerDeserializer.getDouble(bytes1,
                                          offset1 + 1 + APointSerializerDeserializer.getCoordinateOffset(Coordinate.Y));
  
                                  double xInc = ADoubleSerializerDeserializer.getDouble(bytes2, offset2 + 1);
                                  double yInc = ADoubleSerializerDeserializer.getDouble(bytes3, offset3 + 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 (tag0 != ATypeTag.SERIALIZED_POINT_TYPE_TAG) {
                                      throw new TypeMismatchException(sourceLoc, getIdentifier(), 0, tag0,
                                              ATypeTag.SERIALIZED_POINT_TYPE_TAG);
                                  }
                                  if (tag1 != ATypeTag.SERIALIZED_POINT_TYPE_TAG) {
                                      throw new TypeMismatchException(sourceLoc, getIdentifier(), 1, tag1,
                                              ATypeTag.SERIALIZED_POINT_TYPE_TAG);
                                  }
                                  if (tag2 != ATypeTag.SERIALIZED_DOUBLE_TYPE_TAG) {
                                      throw new TypeMismatchException(sourceLoc, getIdentifier(), 2, tag2,
                                              ATypeTag.SERIALIZED_DOUBLE_TYPE_TAG);
                                  }
                                  if (tag3 != ATypeTag.SERIALIZED_DOUBLE_TYPE_TAG) {
                                      throw new TypeMismatchException(sourceLoc, getIdentifier(), 3, tag3,
                                              ATypeTag.SERIALIZED_DOUBLE_TYPE_TAG);
                                  }
                              }
                              result.set(resultStorage);
                          } catch (IOException e1) {
                              throw HyracksDataException.create(e1);
                          }
                      }
                  };
              }
          };
      }
  
      @Override
      public FunctionIdentifier getIdentifier() {
          return BuiltinFunctions.SPATIAL_CELL;
      }
  
  }
  