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.accessors;
  
  import java.io.DataOutput;
  import java.io.IOException;
  
  import org.apache.asterix.builders.OrderedListBuilder;
  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.AInt16SerializerDeserializer;
  import org.apache.asterix.dataflow.data.nontagged.serde.ALineSerializerDeserializer;
  import org.apache.asterix.dataflow.data.nontagged.serde.APolygonSerializerDeserializer;
  import org.apache.asterix.dataflow.data.nontagged.serde.ARectangleSerializerDeserializer;
  import org.apache.asterix.formats.nontagged.SerializerDeserializerProvider;
  import org.apache.asterix.om.base.AMutablePoint;
  import org.apache.asterix.om.base.APoint;
  import org.apache.asterix.om.functions.BuiltinFunctions;
  import org.apache.asterix.om.functions.IFunctionDescriptorFactory;
  import org.apache.asterix.om.types.AOrderedListType;
  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.evaluators.functions.PointableHelper;
  import org.apache.asterix.runtime.exceptions.InvalidDataFormatException;
  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 LineRectanglePolygonAccessor extends AbstractScalarFunctionDynamicDescriptor {
      private static final long serialVersionUID = 1L;
      private static final FunctionIdentifier FID = BuiltinFunctions.GET_POINTS_LINE_RECTANGLE_POLYGON_ACCESSOR;
      public static final IFunctionDescriptorFactory FACTORY = LineRectanglePolygonAccessor::new;
  
      @Override
      public IScalarEvaluatorFactory createEvaluatorFactory(final IScalarEvaluatorFactory[] args) {
          return new IScalarEvaluatorFactory() {
              private static final long serialVersionUID = 1L;
  
              @Override
              public IScalarEvaluator createScalarEvaluator(IEvaluatorContext ctx) throws HyracksDataException {
                  return new IScalarEvaluator() {
                      private final ArrayBackedValueStorage resultStorage = new ArrayBackedValueStorage();
                      private final DataOutput out = resultStorage.getDataOutput();
                      private final IPointable argPtr = new VoidPointable();
                      private final IScalarEvaluator eval = args[0].createScalarEvaluator(ctx);
  
                      private final OrderedListBuilder listBuilder = new OrderedListBuilder();
                      private final ArrayBackedValueStorage inputVal = new ArrayBackedValueStorage();
                      private final AOrderedListType pointListType = new AOrderedListType(BuiltinType.APOINT, null);
                      private final AMutablePoint aPoint = new AMutablePoint(0, 0);
                      @SuppressWarnings("unchecked")
                      private final ISerializerDeserializer<APoint> pointSerde =
                              SerializerDeserializerProvider.INSTANCE.getSerializerDeserializer(BuiltinType.APOINT);
  
                      @Override
                      public void evaluate(IFrameTupleReference tuple, IPointable result) throws HyracksDataException {
                          eval.evaluate(tuple, argPtr);
  
                          if (PointableHelper.checkAndSetMissingOrNull(result, argPtr)) {
                              return;
                          }
  
                          byte[] bytes = argPtr.getByteArray();
                          int startOffset = argPtr.getStartOffset();
                          resultStorage.reset();
  
                          try {
                              if (bytes[startOffset] == ATypeTag.SERIALIZED_LINE_TYPE_TAG) {
                                  listBuilder.reset(pointListType);
  
                                  inputVal.reset();
                                  double startX = ADoubleSerializerDeserializer.getDouble(bytes, startOffset + 1
                                          + ALineSerializerDeserializer.getStartPointCoordinateOffset(Coordinate.X));
                                  double startY = ADoubleSerializerDeserializer.getDouble(bytes, startOffset + 1
                                          + ALineSerializerDeserializer.getStartPointCoordinateOffset(Coordinate.Y));
                                  aPoint.setValue(startX, startY);
                                  pointSerde.serialize(aPoint, inputVal.getDataOutput());
                                  listBuilder.addItem(inputVal);
  
                                  inputVal.reset();
                                  double endX = ADoubleSerializerDeserializer.getDouble(bytes, startOffset + 1
                                          + ALineSerializerDeserializer.getEndPointCoordinateOffset(Coordinate.X));
                                  double endY = ADoubleSerializerDeserializer.getDouble(bytes, startOffset + 1
                                          + ALineSerializerDeserializer.getEndPointCoordinateOffset(Coordinate.Y));
                                  aPoint.setValue(endX, endY);
                                  pointSerde.serialize(aPoint, inputVal.getDataOutput());
                                  listBuilder.addItem(inputVal);
                                  listBuilder.write(out, true);
                              } else if (bytes[startOffset] == ATypeTag.SERIALIZED_RECTANGLE_TYPE_TAG) {
                                  listBuilder.reset(pointListType);
                                  inputVal.reset();
                                  double x1 = ADoubleSerializerDeserializer.getDouble(bytes, startOffset + 1
                                          + ARectangleSerializerDeserializer.getBottomLeftCoordinateOffset(Coordinate.X));
                                  double y1 = ADoubleSerializerDeserializer.getDouble(bytes, startOffset + 1
                                          + ARectangleSerializerDeserializer.getBottomLeftCoordinateOffset(Coordinate.Y));
                                  aPoint.setValue(x1, y1);
                                  pointSerde.serialize(aPoint, inputVal.getDataOutput());
                                  listBuilder.addItem(inputVal);
  
                                  inputVal.reset();
                                  double x2 = ADoubleSerializerDeserializer.getDouble(bytes, startOffset + 1
                                          + ARectangleSerializerDeserializer.getUpperRightCoordinateOffset(Coordinate.X));
                                  double y2 = ADoubleSerializerDeserializer.getDouble(bytes, startOffset + 1
                                          + ARectangleSerializerDeserializer.getUpperRightCoordinateOffset(Coordinate.Y));
                                  aPoint.setValue(x2, y2);
                                  pointSerde.serialize(aPoint, inputVal.getDataOutput());
                                  listBuilder.addItem(inputVal);
                                  listBuilder.write(out, true);
                              } else if (bytes[startOffset] == ATypeTag.SERIALIZED_POLYGON_TYPE_TAG) {
                                  int numOfPoints = AInt16SerializerDeserializer.getShort(bytes,
                                          startOffset + APolygonSerializerDeserializer.getNumberOfPointsOffset() + 1);
  
                                  if (numOfPoints < 3) {
                                      throw new InvalidDataFormatException(sourceLoc, getIdentifier(),
                                              ATypeTag.SERIALIZED_POLYGON_TYPE_TAG);
                                  }
                                  listBuilder.reset(pointListType);
                                  for (int i = 0; i < numOfPoints; ++i) {
                                      inputVal.reset();
                                      double x = ADoubleSerializerDeserializer.getDouble(bytes, startOffset + 1
                                              + APolygonSerializerDeserializer.getCoordinateOffset(i, Coordinate.X));
                                      double y = ADoubleSerializerDeserializer.getDouble(bytes, startOffset + 1
                                              + APolygonSerializerDeserializer.getCoordinateOffset(i, Coordinate.Y));
                                      aPoint.setValue(x, y);
                                      pointSerde.serialize(aPoint, inputVal.getDataOutput());
                                      listBuilder.addItem(inputVal);
                                  }
                                  listBuilder.write(out, true);
                              } else {
                                  throw new TypeMismatchException(sourceLoc, getIdentifier(), 0, bytes[startOffset],
                                          ATypeTag.SERIALIZED_LINE_TYPE_TAG, ATypeTag.SERIALIZED_RECTANGLE_TYPE_TAG,
                                          ATypeTag.SERIALIZED_POLYGON_TYPE_TAG);
                              }
                          } catch (IOException e) {
                              throw HyracksDataException.create(e);
                          }
                          result.set(resultStorage);
                      }
                  };
              }
          };
      }
  
      @Override
      public FunctionIdentifier getIdentifier() {
          return FID;
      }
  
  }
  