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 com.datastax.oss.driver.internal.core.type.codec;
  
  import com.datastax.oss.driver.api.core.ProtocolVersion;
  import com.datastax.oss.driver.api.core.data.CqlDuration;
  import com.datastax.oss.driver.api.core.type.DataType;
  import com.datastax.oss.driver.api.core.type.DataTypes;
  import com.datastax.oss.driver.api.core.type.codec.TypeCodec;
  import com.datastax.oss.driver.api.core.type.reflect.GenericType;
  import com.datastax.oss.driver.internal.core.type.util.VIntCoding;
  import com.datastax.oss.driver.shaded.guava.common.io.ByteArrayDataOutput;
  import com.datastax.oss.driver.shaded.guava.common.io.ByteStreams;
  import com.datastax.oss.protocol.internal.util.Bytes;
  import edu.umd.cs.findbugs.annotations.NonNull;
  import edu.umd.cs.findbugs.annotations.Nullable;
  import java.io.DataInput;
  import java.io.IOException;
  import java.nio.ByteBuffer;
  import net.jcip.annotations.ThreadSafe;
  
  @ThreadSafe
  public class CqlDurationCodec implements TypeCodec<CqlDuration> {
    @NonNull
    @Override
    public GenericType<CqlDuration> getJavaType() {
      return GenericType.CQL_DURATION;
    }
  
    @NonNull
    @Override
    public DataType getCqlType() {
      return DataTypes.DURATION;
    }
  
    @Override
    public boolean accepts(@NonNull Object value) {
      return value instanceof CqlDuration;
    }
  
    @Override
    public boolean accepts(@NonNull Class<?> javaClass) {
      return javaClass == CqlDuration.class;
    }
  
    @Nullable
    @Override
    public ByteBuffer encode(@Nullable CqlDuration value, @NonNull ProtocolVersion protocolVersion) {
      if (value == null) {
        return null;
      }
      long months = value.getMonths();
      long days = value.getDays();
      long nanoseconds = value.getNanoseconds();
      int size =
          VIntCoding.computeVIntSize(months)
              + VIntCoding.computeVIntSize(days)
              + VIntCoding.computeVIntSize(nanoseconds);
      ByteArrayDataOutput out = ByteStreams.newDataOutput(size);
      try {
        VIntCoding.writeVInt(months, out);
        VIntCoding.writeVInt(days, out);
        VIntCoding.writeVInt(nanoseconds, out);
      } catch (IOException e) {
        // cannot happen
        throw new AssertionError();
      }
      return ByteBuffer.wrap(out.toByteArray());
    }
  
    @Nullable
    @Override
    public CqlDuration decode(@Nullable ByteBuffer bytes, @NonNull ProtocolVersion protocolVersion) {
      if (bytes == null || bytes.remaining() == 0) {
        return null;
      } else {
        DataInput in = ByteStreams.newDataInput(Bytes.getArray(bytes));
        try {
          int months = (int) VIntCoding.readVInt(in);
          int days = (int) VIntCoding.readVInt(in);
          long nanoseconds = VIntCoding.readVInt(in);
          return CqlDuration.newInstance(months, days, nanoseconds);
        } catch (IOException e) {
          // cannot happen
          throw new AssertionError();
        }
      }
    }
  
    @NonNull
    @Override
    public String format(@Nullable CqlDuration value) {
      return (value == null) ? "NULL" : value.toString();
    }
  
    @Nullable
    @Override
    public CqlDuration parse(@Nullable String value) {
      return (value == null || value.isEmpty() || value.equalsIgnoreCase("NULL"))
          ? null
          : CqlDuration.from(value);
    }
  }
  