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.serde.ADoubleSerializerDeserializer;
  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.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 CreatePointDescriptor extends AbstractScalarFunctionDynamicDescriptor {
      private static final long serialVersionUID = 1L;
      public static final IFunctionDescriptorFactory FACTORY = CreatePointDescriptor::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 ArrayBackedValueStorage resultStorage = new ArrayBackedValueStorage();
                      private DataOutput out = resultStorage.getDataOutput();
                      private IPointable inputArg0 = new VoidPointable();
                      private IPointable inputArg1 = new VoidPointable();
                      private IScalarEvaluator eval0 = args[0].createScalarEvaluator(ctx);
                      private IScalarEvaluator eval1 = args[1].createScalarEvaluator(ctx);
                      private AMutablePoint aPoint = new AMutablePoint(0, 0);
                      @SuppressWarnings("unchecked")
                      private ISerializerDeserializer<APoint> pointSerde =
                              SerializerDeserializerProvider.INSTANCE.getSerializerDeserializer(BuiltinType.APOINT);
  
                      @Override
                      public void evaluate(IFrameTupleReference tuple, IPointable result) throws HyracksDataException {
                          eval0.evaluate(tuple, inputArg0);
                          eval1.evaluate(tuple, inputArg1);
  
                          if (PointableHelper.checkAndSetMissingOrNull(result, inputArg0, inputArg1)) {
                              return;
                          }
  
                          byte[] bytes0 = inputArg0.getByteArray();
                          int offset0 = inputArg0.getStartOffset();
                          byte[] bytes1 = inputArg1.getByteArray();
                          int offset1 = inputArg1.getStartOffset();
  
                          // type-check: (double, double)
                          if (bytes0[offset0] != ATypeTag.SERIALIZED_DOUBLE_TYPE_TAG) {
                              throw new TypeMismatchException(sourceLoc, getIdentifier(), 0, bytes0[offset0],
                                      ATypeTag.SERIALIZED_DOUBLE_TYPE_TAG);
                          }
                          if (bytes1[offset1] != ATypeTag.SERIALIZED_DOUBLE_TYPE_TAG) {
                              throw new TypeMismatchException(sourceLoc, getIdentifier(), 1, bytes1[offset1],
                                      ATypeTag.SERIALIZED_DOUBLE_TYPE_TAG);
                          }
  
                          resultStorage.reset();
                          try {
                              aPoint.setValue(ADoubleSerializerDeserializer.getDouble(bytes0, offset0 + 1),
                                      ADoubleSerializerDeserializer.getDouble(bytes1, offset1 + 1));
                              pointSerde.serialize(aPoint, out);
                          } catch (IOException e1) {
                              throw HyracksDataException.create(e1);
                          }
                          result.set(resultStorage);
                      }
                  };
              }
          };
      }
  
      @Override
      public FunctionIdentifier getIdentifier() {
          return BuiltinFunctions.CREATE_POINT;
      }
  
  }
  