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.Term;
  import org.apache.cassandra.cql3.functions.ArgumentDeserializer;
  import org.apache.cassandra.db.context.CounterContext;
  import org.apache.cassandra.serializers.CounterSerializer;
  import org.apache.cassandra.serializers.MarshalException;
  import org.apache.cassandra.transport.ProtocolVersion;
  import org.apache.cassandra.serializers.TypeSerializer;
  import org.apache.cassandra.utils.ByteBufferUtil;
  
  public class CounterColumnType extends NumberType<Long>
  {
      public static final CounterColumnType instance = new CounterColumnType();
  
      private static final ByteBuffer MASKED_VALUE = instance.decompose(0L);
  
      CounterColumnType() {super(ComparisonType.NOT_COMPARABLE);} // singleton
  
      @Override
      public boolean allowsEmpty()
      {
          return true;
      }
  
      @Override
      public boolean isEmptyValueMeaningless()
      {
          return true;
      }
  
      public boolean isCounter()
      {
          return true;
      }
  
      public <V> Long compose(V value, ValueAccessor<V> accessor)
      {
          return CounterContext.instance().total(value, accessor);
      }
  
      @Override
      public ByteBuffer decompose(Long value)
      {
          return ByteBufferUtil.bytes(value);
      }
  
      @Override
      public <V> void validateCellValue(V cellValue, ValueAccessor<V> accessor) throws MarshalException
      {
          CounterContext.instance().validateContext(cellValue, accessor);
      }
  
      public <V> String getString(V value, ValueAccessor<V> accessor)
      {
          return accessor.toHex(value);
      }
  
      public ByteBuffer fromString(String source)
      {
          return ByteBufferUtil.hexToBytes(source);
      }
  
      @Override
      public Term fromJSONObject(Object parsed)
      {
          throw new UnsupportedOperationException();
      }
  
      @Override
      public String toJSONString(ByteBuffer buffer, ProtocolVersion protocolVersion)
      {
          return CounterSerializer.instance.deserialize(buffer).toString();
      }
  
      public CQL3Type asCQL3Type()
      {
          return CQL3Type.Native.COUNTER;
      }
  
      public TypeSerializer<Long> getSerializer()
      {
          return CounterSerializer.instance;
      }
  
      @Override
      public ArgumentDeserializer getArgumentDeserializer()
      {
          return LongType.instance.getArgumentDeserializer();
      }
  
      @Override
      public ByteBuffer add(Number left, Number right)
      {
          return ByteBufferUtil.bytes(left.longValue() + right.longValue());
      }
  
      @Override
      public ByteBuffer substract(Number left, Number right)
      {
          return ByteBufferUtil.bytes(left.longValue() - right.longValue());
      }
  
      @Override
      public ByteBuffer multiply(Number left, Number right)
      {
          return ByteBufferUtil.bytes(left.longValue() * right.longValue());
      }
  
      @Override
      public ByteBuffer divide(Number left, Number right)
      {
          return ByteBufferUtil.bytes(left.longValue() / right.longValue());
      }
  
      @Override
      public ByteBuffer mod(Number left, Number right)
      {
          return ByteBufferUtil.bytes(left.longValue() % right.longValue());
      }
  
      public ByteBuffer negate(Number input)
      {
          return ByteBufferUtil.bytes(-input.longValue());
      }
  
      @Override
      public ByteBuffer abs(Number input)
      {
          return ByteBufferUtil.bytes(Math.abs(input.longValue()));
      }
  
      @Override
      public ByteBuffer exp(Number input)
      {
          return ByteBufferUtil.bytes((long) Math.exp(input.longValue()));
      }
  
      @Override
      public ByteBuffer log(Number input)
      {
          return ByteBufferUtil.bytes((long) Math.log(input.longValue()));
      }
  
      @Override
      public ByteBuffer log10(Number input)
      {
          return ByteBufferUtil.bytes((long) Math.log10(input.longValue()));
      }
  
      @Override
      public ByteBuffer round(Number input)
      {
          return decompose(input.longValue());
      }
  
      @Override
      public ByteBuffer getMaskedValue()
      {
          return MASKED_VALUE;
      }
  }
  