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.geo.evaluators.functions;
  
  import java.io.DataOutput;
  import java.io.IOException;
  
  import org.apache.asterix.dataflow.data.nontagged.serde.AGeometrySerializerDeserializer;
  import org.apache.asterix.om.functions.BuiltinFunctions;
  import org.apache.asterix.om.functions.IFunctionDescriptorFactory;
  import org.apache.asterix.om.types.ATypeTag;
  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.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;
  import org.locationtech.jts.geom.Coordinate;
  import org.locationtech.jts.geom.GeometryFactory;
  import org.locationtech.jts.geom.Point;
  
  public class STMakePointDescriptor extends AbstractGetValDescriptor {
  
      private static final long serialVersionUID = 1L;
      public static final IFunctionDescriptorFactory FACTORY = STMakePointDescriptor::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 STMakePointEvaluator(args, ctx);
              }
          };
      }
  
      @Override
      public FunctionIdentifier getIdentifier() {
          return BuiltinFunctions.ST_MAKE_POINT;
      }
  
      private class STMakePointEvaluator implements IScalarEvaluator {
  
          private final ArrayBackedValueStorage resultStorage;
          private final DataOutput out;
          private IPointable inputArg0;
          private IPointable inputArg1;
          private final IScalarEvaluator eval0;
          private final IScalarEvaluator eval1;
          private Point point;
          private final GeometryFactory geometryFactory;
  
          public STMakePointEvaluator(IScalarEvaluatorFactory[] args, IEvaluatorContext ctx) throws HyracksDataException {
              resultStorage = new ArrayBackedValueStorage();
              out = resultStorage.getDataOutput();
              inputArg0 = new VoidPointable();
              inputArg1 = new VoidPointable();
              eval0 = args[0].createScalarEvaluator(ctx);
              eval1 = args[1].createScalarEvaluator(ctx);
              geometryFactory = new GeometryFactory();
          }
  
          @Override
          public void evaluate(IFrameTupleReference tuple, IPointable result) throws HyracksDataException {
              eval0.evaluate(tuple, inputArg0);
              eval1.evaluate(tuple, inputArg1);
  
              byte[] bytes0 = inputArg0.getByteArray();
              int offset0 = inputArg0.getStartOffset();
              byte[] bytes1 = inputArg1.getByteArray();
              int offset1 = inputArg1.getStartOffset();
  
              resultStorage.reset();
              try {
                  out.writeByte(ATypeTag.SERIALIZED_GEOMETRY_TYPE_TAG);
                  Coordinate coordinate = new Coordinate(getVal(bytes0, offset0), getVal(bytes1, offset1));
                  point = geometryFactory.createPoint(coordinate);
                  AGeometrySerializerDeserializer.INSTANCE.serialize(point, out);
              } catch (IOException e1) {
                  throw HyracksDataException.create(e1);
              }
              result.set(resultStorage);
          }
      }
  }
  