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.common.annotations.MissingNullInOutFunction;
  import org.apache.asterix.dataflow.data.nontagged.serde.ADayTimeDurationSerializerDeserializer;
  import org.apache.asterix.dataflow.data.nontagged.serde.ADurationSerializerDeserializer;
  import org.apache.asterix.dataflow.data.nontagged.serde.AInt32SerializerDeserializer;
  import org.apache.asterix.dataflow.data.nontagged.serde.AInt64SerializerDeserializer;
  import org.apache.asterix.formats.nontagged.SerializerDeserializerProvider;
  import org.apache.asterix.om.base.AInt64;
  import org.apache.asterix.om.base.AMutableInt64;
  import org.apache.asterix.om.base.temporal.GregorianCalendarSystem;
  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.evaluators.functions.PointableHelper;
  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 TemporalDayAccessor extends AbstractScalarFunctionDynamicDescriptor {
  
      private static final long serialVersionUID = 1L;
      private static final FunctionIdentifier FID = BuiltinFunctions.ACCESSOR_TEMPORAL_DAY;
      public static final IFunctionDescriptorFactory FACTORY = TemporalDayAccessor::new;
  
      /* (non-Javadoc)
       * @see org.apache.asterix.om.function.IFunctionDescriptor#createEvaluatorFactory(org.apache.hyracks.algebricks.runtime.base.IScalarEvaluatorFactory[])
       */
      @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 GregorianCalendarSystem calSystem = GregorianCalendarSystem.getInstance();
  
                      // for output: type integer
                      @SuppressWarnings("unchecked")
                      private final ISerializerDeserializer<AInt64> intSerde =
                              SerializerDeserializerProvider.INSTANCE.getSerializerDeserializer(BuiltinType.AINT64);
                      private final AMutableInt64 aMutableInt64 = new AMutableInt64(0);
  
                      @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_DURATION_TYPE_TAG) {
                                  aMutableInt64.setValue(calSystem.getDurationDay(
                                          ADurationSerializerDeserializer.getDayTime(bytes, startOffset + 1)));
                                  intSerde.serialize(aMutableInt64, out);
                                  result.set(resultStorage);
                                  return;
                              }
                              if (bytes[startOffset] == ATypeTag.SERIALIZED_DAY_TIME_DURATION_TYPE_TAG) {
                                  aMutableInt64.setValue(calSystem.getDurationDay(
                                          ADayTimeDurationSerializerDeserializer.getDayTime(bytes, startOffset + 1)));
                                  intSerde.serialize(aMutableInt64, out);
                                  result.set(resultStorage);
                                  return;
                              }
  
                              long chrononTimeInMs = 0;
                              if (bytes[startOffset] == ATypeTag.SERIALIZED_DATE_TYPE_TAG) {
                                  chrononTimeInMs = AInt32SerializerDeserializer.getInt(bytes, startOffset + 1)
                                          * GregorianCalendarSystem.CHRONON_OF_DAY;
                              } else if (bytes[startOffset] == ATypeTag.SERIALIZED_DATETIME_TYPE_TAG) {
                                  chrononTimeInMs = AInt64SerializerDeserializer.getLong(bytes, startOffset + 1);
                              } else {
                                  throw new TypeMismatchException(sourceLoc, getIdentifier(), 0, bytes[startOffset],
                                          ATypeTag.SERIALIZED_DURATION_TYPE_TAG,
                                          ATypeTag.SERIALIZED_DAY_TIME_DURATION_TYPE_TAG,
                                          ATypeTag.SERIALIZED_DATE_TYPE_TAG, ATypeTag.SERIALIZED_DATETIME_TYPE_TAG);
                              }
  
                              int year = calSystem.getYear(chrononTimeInMs);
                              int month = calSystem.getMonthOfYear(chrononTimeInMs, year);
                              int day = calSystem.getDayOfMonthYear(chrononTimeInMs, year, month);
  
                              aMutableInt64.setValue(day);
                              intSerde.serialize(aMutableInt64, out);
                          } catch (IOException e) {
                              throw HyracksDataException.create(e);
                          }
                          result.set(resultStorage);
                      }
                  };
              }
          };
      }
  
      /* (non-Javadoc)
       * @see org.apache.asterix.om.functions.IFunctionDescriptor#getIdentifier()
       */
      @Override
      public FunctionIdentifier getIdentifier() {
          return FID;
      }
  
  }
  