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.cassandra.db.marshal;
  
  import java.nio.ByteBuffer;
  
  import org.apache.cassandra.cql3.CQL3Type;
  import org.apache.cassandra.cql3.terms.Constants;
  import org.apache.cassandra.cql3.Duration;
  import org.apache.cassandra.cql3.terms.Term;
  import org.apache.cassandra.cql3.functions.ArgumentDeserializer;
  import org.apache.cassandra.serializers.DurationSerializer;
  import org.apache.cassandra.serializers.MarshalException;
  import org.apache.cassandra.serializers.TypeSerializer;
  import org.apache.cassandra.utils.ByteBufferUtil;
  
  /**
   * Represents a duration. The duration is stored as  months, days, and nanoseconds. This is done
   * <p>Internally he duration is stored as months (unsigned integer), days (unsigned integer), and nanoseconds.</p>
   */
  public class DurationType extends AbstractType<Duration>
  {
      public static final DurationType instance = new DurationType();
  
      private static final ArgumentDeserializer ARGUMENT_DESERIALIZER = new DefaultArgumentDeserializer(instance);
  
      private static final ByteBuffer MASKED_VALUE = instance.decompose(Duration.newInstance(0, 0, 0));
  
      DurationType()
      {
          super(ComparisonType.BYTE_ORDER);
      } // singleton
  
      public ByteBuffer fromString(String source) throws MarshalException
      {
          // Return an empty ByteBuffer for an empty string.
          if (source.isEmpty())
              return ByteBufferUtil.EMPTY_BYTE_BUFFER;
  
          return decompose(Duration.from(source));
      }
  
      @Override
      public boolean isValueCompatibleWithInternal(AbstractType<?> otherType)
      {
          return this == otherType;
      }
  
      public Term fromJSONObject(Object parsed) throws MarshalException
      {
          try
          {
              return new Constants.Value(fromString((String) parsed));
          }
          catch (ClassCastException exc)
          {
              throw new MarshalException(String.format("Expected a string representation of a duration, but got a %s: %s",
                                                       parsed.getClass().getSimpleName(), parsed));
          }
      }
  
      @Override
      public TypeSerializer<Duration> getSerializer()
      {
          return DurationSerializer.instance;
      }
  
      @Override
      public ArgumentDeserializer getArgumentDeserializer()
      {
          return ARGUMENT_DESERIALIZER;
      }
  
      @Override
      public CQL3Type asCQL3Type()
      {
          return CQL3Type.Native.DURATION;
      }
  
      @Override
      public boolean referencesDuration()
      {
          return true;
      }
  
      @Override
      public ByteBuffer getMaskedValue()
      {
          return MASKED_VALUE;
      }
  }
  