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.temporal;
  
  import java.io.DataOutput;
  
  import org.apache.asterix.common.annotations.MissingNullInOutFunction;
  import org.apache.asterix.dataflow.data.nontagged.serde.AInt16SerializerDeserializer;
  import org.apache.asterix.dataflow.data.nontagged.serde.AInt32SerializerDeserializer;
  import org.apache.asterix.dataflow.data.nontagged.serde.AInt64SerializerDeserializer;
  import org.apache.asterix.dataflow.data.nontagged.serde.AInt8SerializerDeserializer;
  import org.apache.asterix.formats.nontagged.SerializerDeserializerProvider;
  import org.apache.asterix.om.base.ADuration;
  import org.apache.asterix.om.base.AMutableDuration;
  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 DurationFromMillisecondsDescriptor extends AbstractScalarFunctionDynamicDescriptor {
  
      private final static long serialVersionUID = 1L;
      public final static FunctionIdentifier FID = BuiltinFunctions.DURATION_FROM_MILLISECONDS;
  
      public final static IFunctionDescriptorFactory FACTORY = DurationFromMillisecondsDescriptor::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 ArrayBackedValueStorage resultStorage = new ArrayBackedValueStorage();
                      private DataOutput out = resultStorage.getDataOutput();
                      private IPointable argPtr0 = new VoidPointable();
                      private IScalarEvaluator eval0 = args[0].createScalarEvaluator(ctx);
  
                      @SuppressWarnings("unchecked")
                      private ISerializerDeserializer<ADuration> durationSerde =
                              SerializerDeserializerProvider.INSTANCE.getSerializerDeserializer(BuiltinType.ADURATION);
  
                      AMutableDuration aDuration = new AMutableDuration(0, 0);
  
                      @Override
                      public void evaluate(IFrameTupleReference tuple, IPointable result) throws HyracksDataException {
                          resultStorage.reset();
                          eval0.evaluate(tuple, argPtr0);
  
                          if (PointableHelper.checkAndSetMissingOrNull(result, argPtr0)) {
                              return;
                          }
  
                          byte[] bytes = argPtr0.getByteArray();
                          int offset = argPtr0.getStartOffset();
  
                          ATypeTag argPtrTypeTag = ATypeTag.VALUE_TYPE_MAPPING[bytes[offset]];
                          switch (argPtrTypeTag) {
                              case TINYINT:
                                  aDuration.setValue(0, AInt8SerializerDeserializer.getByte(bytes, offset + 1));
                                  break;
                              case SMALLINT:
                                  aDuration.setValue(0, AInt16SerializerDeserializer.getShort(bytes, offset + 1));
                                  break;
                              case INTEGER:
                                  aDuration.setValue(0, AInt32SerializerDeserializer.getInt(bytes, offset + 1));
                                  break;
                              case BIGINT:
                                  aDuration.setValue(0, AInt64SerializerDeserializer.getLong(bytes, offset + 1));
                                  break;
                              default:
                                  throw new TypeMismatchException(sourceLoc, getIdentifier(), 0, bytes[offset],
                                          ATypeTag.SERIALIZED_INT8_TYPE_TAG, ATypeTag.SERIALIZED_INT16_TYPE_TAG,
                                          ATypeTag.SERIALIZED_INT32_TYPE_TAG, ATypeTag.SERIALIZED_INT64_TYPE_TAG);
                          }
                          durationSerde.serialize(aDuration, out);
                          result.set(resultStorage);
                      }
                  };
              }
  
          };
      }
  
      /* (non-Javadoc)
       * @see org.apache.asterix.om.functions.AbstractFunctionDescriptor#getIdentifier()
       */
      @Override
      public FunctionIdentifier getIdentifier() {
          return FID;
      }
  
  }
  