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.commons.lang3.mutable.MutableByte;
  
  import org.apache.cassandra.cql3.CQL3Type;
  import org.apache.cassandra.cql3.terms.Constants;
  import org.apache.cassandra.cql3.terms.Term;
  import org.apache.cassandra.cql3.functions.ArgumentDeserializer;
  import org.apache.cassandra.serializers.ByteSerializer;
  import org.apache.cassandra.serializers.MarshalException;
  import org.apache.cassandra.serializers.TypeSerializer;
  import org.apache.cassandra.transport.ProtocolVersion;
  import org.apache.cassandra.utils.ByteBufferUtil;
  import org.apache.cassandra.utils.bytecomparable.ByteComparable;
  import org.apache.cassandra.utils.bytecomparable.ByteComparable.Version;
  import org.apache.cassandra.utils.bytecomparable.ByteSource;
  import org.apache.cassandra.utils.bytecomparable.ByteSourceInverse;
  
  public class ByteType extends NumberType<Byte>
  {
      public static final ByteType instance = new ByteType();
  
      private static final ByteBuffer MASKED_VALUE = instance.decompose((byte) 0);
  
      ByteType()
      {
          super(ComparisonType.CUSTOM);
      } // singleton
  
      public <VL, VR> int compareCustom(VL left, ValueAccessor<VL> accessorL, VR right, ValueAccessor<VR> accessorR)
      {
          return accessorL.getByte(left, 0) - accessorR.getByte(right, 0);
      }
  
      @Override
      public <V> ByteSource asComparableBytes(ValueAccessor<V> accessor, V data, Version version)
      {
          // This type does not allow non-present values, but we do just to avoid future complexity.
          return ByteSource.optionalSignedFixedLengthNumber(accessor, data);
      }
  
      @Override
      public <V> V fromComparableBytes(ValueAccessor<V> accessor, ByteSource.Peekable comparableBytes, ByteComparable.Version version)
      {
          return ByteSourceInverse.getOptionalSignedFixedLength(accessor, comparableBytes, 1);
      }
  
      public ByteBuffer fromString(String source) throws MarshalException
      {
          // Return an empty ByteBuffer for an empty string.
          if (source.isEmpty())
              return ByteBufferUtil.EMPTY_BYTE_BUFFER;
  
          byte b;
  
          try
          {
              b = Byte.parseByte(source);
          }
          catch (Exception e)
          {
              throw new MarshalException(String.format("Unable to make byte from '%s'", source), e);
          }
  
          return decompose(b);
      }
  
      public Term fromJSONObject(Object parsed) throws MarshalException
      {
          if (parsed instanceof String || parsed instanceof Number)
              return new Constants.Value(fromString(String.valueOf(parsed)));
  
          throw new MarshalException(String.format(
                  "Expected a byte value, but got a %s: %s", parsed.getClass().getSimpleName(), parsed));
      }
  
      @Override
      public String toJSONString(ByteBuffer buffer, ProtocolVersion protocolVersion)
      {
          return getSerializer().deserialize(buffer).toString();
      }
  
      @Override
      public CQL3Type asCQL3Type()
      {
          return CQL3Type.Native.TINYINT;
      }
  
      @Override
      public TypeSerializer<Byte> getSerializer()
      {
          return ByteSerializer.instance;
      }
  
      @Override
      public ArgumentDeserializer getArgumentDeserializer()
      {
          return new NumberArgumentDeserializer<MutableByte>(new MutableByte())
          {
              @Override
              protected void setMutableValue(MutableByte mutable, ByteBuffer buffer)
              {
                  mutable.setValue(ByteBufferUtil.toByte(buffer));
              }
          };
      }
  
      @Override
      public ByteBuffer add(Number left, Number right)
      {
          return ByteBufferUtil.bytes((byte) (left.byteValue() + right.byteValue()));
      }
  
      @Override
      public ByteBuffer substract(Number left, Number right)
      {
          return ByteBufferUtil.bytes((byte) (left.byteValue() - right.byteValue()));
      }
  
      @Override
      public ByteBuffer multiply(Number left, Number right)
      {
          return ByteBufferUtil.bytes((byte) (left.byteValue() * right.byteValue()));
      }
  
      @Override
      public ByteBuffer divide(Number left, Number right)
      {
          return ByteBufferUtil.bytes((byte) (left.byteValue() / right.byteValue()));
      }
  
      @Override
      public ByteBuffer mod(Number left, Number right)
      {
          return ByteBufferUtil.bytes((byte) (left.byteValue() % right.byteValue()));
      }
  
      public ByteBuffer negate(Number input)
      {
          return ByteBufferUtil.bytes((byte) -input.byteValue());
      }
  
      @Override
      public ByteBuffer abs(Number input)
      {
          return ByteBufferUtil.bytes((byte) Math.abs(input.byteValue()));
      }
  
      @Override
      public ByteBuffer exp(Number input)
      {
          return ByteBufferUtil.bytes((byte) Math.exp(input.byteValue()));
      }
  
      @Override
      public ByteBuffer log(Number input)
      {
          return ByteBufferUtil.bytes((byte) Math.log(input.byteValue()));
      }
  
      @Override
      public ByteBuffer log10(Number input)
      {
          return ByteBufferUtil.bytes((byte) Math.log10(input.byteValue()));
      }
  
      @Override
      public ByteBuffer round(Number input)
      {
          return decompose(input.byteValue());
      }
  
      @Override
      public ByteBuffer getMaskedValue()
      {
          return MASKED_VALUE;
      }
  }
  