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 java.util.Objects;
  
  import org.apache.commons.lang3.mutable.MutableLong;
  
  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.TypeSerializer;
  import org.apache.cassandra.serializers.LongSerializer;
  import org.apache.cassandra.serializers.MarshalException;
  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.ByteSource;
  import org.apache.cassandra.utils.bytecomparable.ByteSourceInverse;
  
  public class LongType extends NumberType<Long>
  {
      public static final LongType instance = new LongType();
  
      private static final ByteBuffer MASKED_VALUE = instance.decompose(0L);
  
      LongType() {super(ComparisonType.CUSTOM);} // singleton
  
      @Override
      public boolean allowsEmpty()
      {
          return true;
      }
  
      @Override
      public boolean isEmptyValueMeaningless()
      {
          return true;
      }
  
      public <VL, VR> int compareCustom(VL left, ValueAccessor<VL> accessorL, VR right, ValueAccessor<VR> accessorR)
      {
          return compareLongs(left, accessorL, right, accessorR);
      }
  
      public static <VL, VR> int compareLongs(VL left, ValueAccessor<VL> accessorL, VR right, ValueAccessor<VR> accessorR)
      {
          if (accessorL.isEmpty(left)|| accessorR.isEmpty(right))
              return Boolean.compare(accessorR.isEmpty(right), accessorL.isEmpty(left));
  
          int diff = accessorL.getByte(left, 0) - accessorR.getByte(right, 0);
          if (diff != 0)
              return diff;
  
          return ValueAccessor.compare(left, accessorL, right, accessorR);
      }
  
      @Override
      public <V> ByteSource asComparableBytes(ValueAccessor<V> accessor, V data, ByteComparable.Version version)
      {
          if (accessor.isEmpty(data))
              return null;
          if (version == ByteComparable.Version.LEGACY)
              return ByteSource.signedFixedLengthNumber(accessor, data);
          else
              return ByteSource.variableLengthInteger(accessor.getLong(data, 0));
      }
  
      @Override
      public <V> V fromComparableBytes(ValueAccessor<V> accessor, ByteSource.Peekable comparableBytes, ByteComparable.Version version)
      {
          if (comparableBytes == null)
              return accessor.empty();
          if (version == ByteComparable.Version.LEGACY)
              return ByteSourceInverse.getSignedFixedLength(accessor, comparableBytes, 8);
          else
              return accessor.valueOf(ByteSourceInverse.getVariableLengthInteger(comparableBytes));
      }
  
      public ByteBuffer fromString(String source) throws MarshalException
      {
          // Return an empty ByteBuffer for an empty string.
          if (source.isEmpty())
              return ByteBufferUtil.EMPTY_BYTE_BUFFER;
  
          long longType;
  
          try
          {
              longType = Long.parseLong(source);
          }
          catch (Exception e)
          {
              throw new MarshalException(String.format("Unable to make long from '%s'", source), e);
          }
  
          return decompose(longType);
      }
  
      @Override
      public Term fromJSONObject(Object parsed) throws MarshalException
      {
          try
          {
              if (parsed instanceof String)
                  return new Constants.Value(fromString((String) parsed));
  
              Number parsedNumber = (Number) parsed;
              if (!(parsedNumber instanceof Integer || parsedNumber instanceof Long))
                  throw new MarshalException(String.format("Expected a bigint value, but got a %s: %s", parsed.getClass().getSimpleName(), parsed));
  
              return new Constants.Value(getSerializer().serialize(parsedNumber.longValue()));
          }
          catch (ClassCastException exc)
          {
              throw new MarshalException(String.format(
                      "Expected a bigint value, but got a %s: %s", parsed.getClass().getSimpleName(), parsed));
          }
      }
  
      @Override
      public String toJSONString(ByteBuffer buffer, ProtocolVersion protocolVersion)
      {
          return Objects.toString(getSerializer().deserialize(buffer), "\"\"");
      }
  
      @Override
      public boolean isValueCompatibleWithInternal(AbstractType<?> otherType)
      {
          return this == otherType || otherType == DateType.instance || otherType == TimestampType.instance;
      }
  
      public CQL3Type asCQL3Type()
      {
          return CQL3Type.Native.BIGINT;
      }
  
      public TypeSerializer<Long> getSerializer()
      {
          return LongSerializer.instance;
      }
  
      @Override
      public ArgumentDeserializer getArgumentDeserializer()
      {
          return new NumberArgumentDeserializer<MutableLong>(new MutableLong())
          {
              @Override
              protected void setMutableValue(MutableLong mutable, ByteBuffer buffer)
              {
                  mutable.setValue(ByteBufferUtil.toLong(buffer));
              }
          };
      }
  
      @Override
      public int valueLengthIfFixed()
      {
          return 8;
      }
  
      @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());
      }
  
      @Override
      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;
      }
  }
  