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.om.pointables.nonvisitor;
  
  import java.io.DataOutput;
  import java.io.IOException;
  
  import org.apache.asterix.om.types.ATypeTag;
  import org.apache.asterix.om.types.EnumDeserializer;
  import org.apache.hyracks.api.dataflow.value.ITypeTraits;
  import org.apache.hyracks.api.exceptions.HyracksDataException;
  import org.apache.hyracks.api.io.IJsonSerializable;
  import org.apache.hyracks.api.io.IPersistedResourceRegistry;
  import org.apache.hyracks.data.std.api.AbstractPointable;
  import org.apache.hyracks.data.std.api.IPointable;
  import org.apache.hyracks.data.std.api.IPointableFactory;
  import org.apache.hyracks.data.std.primitive.BytePointable;
  import org.apache.hyracks.data.std.primitive.IntegerPointable;
  import org.apache.hyracks.data.std.primitive.LongPointable;
  import org.apache.hyracks.data.std.primitive.VarLengthTypeTrait;
  
  import com.fasterxml.jackson.databind.JsonNode;
  
  /**
   * This class interprets the binary data representation of an interval.
   *
   * Interval {
   *   byte type;
   *   T start;
   *   T end;
   * }
   *
   * T can be of type date, time or datetime.
   */
  public class AIntervalPointable extends AbstractPointable {
  
      public static final AIntervalPointableFactory FACTORY = new AIntervalPointableFactory();
  
      public static final class AIntervalPointableFactory implements IPointableFactory {
          private static final long serialVersionUID = 1L;
  
          @Override
          public IPointable createPointable() {
              return new AIntervalPointable();
          }
  
          @Override
          public ITypeTraits getTypeTraits() {
              return VarLengthTypeTrait.INSTANCE;
          }
  
          @Override
          public JsonNode toJson(IPersistedResourceRegistry registry) throws HyracksDataException {
              return registry.getClassIdentifier(getClass(), serialVersionUID);
          }
  
          @SuppressWarnings("squid:S1172") // unused parameter
          public static IJsonSerializable fromJson(IPersistedResourceRegistry registry, JsonNode json) {
              return FACTORY;
          }
      }
  
      private static final int TAG_SIZE = 1;
  
      public byte getType() {
          return BytePointable.getByte(bytes, start);
      }
  
      public ATypeTag getTypeTag() {
          return EnumDeserializer.ATYPETAGDESERIALIZER.deserialize(getType());
      }
  
      public void getStart(IPointable start) throws HyracksDataException {
          start.set(bytes, getIntervalStartOffset(), getStartEndSize());
      }
  
      public void getTaggedStart(DataOutput output) throws HyracksDataException {
          try {
              output.writeByte(getType());
              output.write(bytes, getIntervalStartOffset(), getStartEndSize());
          } catch (IOException e) {
              throw HyracksDataException.create(e);
          }
      }
  
      private int getIntervalStartOffset() {
          return start + TAG_SIZE;
      }
  
      public long getStartValue() throws HyracksDataException {
          switch (getTypeTag()) {
              case DATE:
              case TIME:
                  return IntegerPointable.getInteger(bytes, getIntervalStartOffset());
              case DATETIME:
                  return LongPointable.getLong(bytes, getIntervalStartOffset());
              default:
                  throw new HyracksDataException("Unsupported interval type: " + getTypeTag() + ".");
          }
      }
  
      public void getEnd(IPointable end) throws HyracksDataException {
          end.set(bytes, getEndOffset(), getStartEndSize());
      }
  
      public void getTaggedEnd(DataOutput output) throws HyracksDataException {
          try {
              output.writeByte(getType());
              output.write(bytes, getEndOffset(), getStartEndSize());
          } catch (IOException e) {
              throw HyracksDataException.create(e);
          }
      }
  
      private int getEndOffset() throws HyracksDataException {
          return getIntervalStartOffset() + getStartEndSize();
      }
  
      public long getEndValue() throws HyracksDataException {
          switch (getTypeTag()) {
              case DATE:
              case TIME:
                  return IntegerPointable.getInteger(bytes, getEndOffset());
              case DATETIME:
                  return LongPointable.getLong(bytes, getEndOffset());
              default:
                  throw new HyracksDataException("Unsupported interval type: " + getTypeTag() + ".");
          }
      }
  
      private int getStartEndSize() throws HyracksDataException {
          switch (getTypeTag()) {
              case DATE:
              case TIME:
                  return Integer.BYTES;
              case DATETIME:
                  return Long.BYTES;
              default:
                  throw new HyracksDataException("Unsupported interval type: " + getTypeTag() + ".");
          }
      }
  }
  