std::shared_ptr DataSerializableHandler::deserialize()

in cppcache/src/SerializationRegistry.cpp [837:922]

• 80 lines of code
• 53 McCabe index (conditional complexity)

std::shared_ptr<DataSerializable> DataSerializableHandler::deserialize(
    DataInput& input, DSCode typeId) const {
  int32_t classId = -1;
  switch (typeId) {
    case DSCode::CacheableUserData: {
      classId = input.read();
      break;
    }
    case DSCode::CacheableUserData2: {
      classId = input.readInt16();
      break;
    }
    case DSCode::CacheableUserData4: {
      classId = input.readInt32();
      break;
    }
    case DSCode::FixedIDDefault:
    case DSCode::FixedIDByte:
    case DSCode::FixedIDInt:
    case DSCode::FixedIDNone:
    case DSCode::FixedIDShort:
    case DSCode::CacheableLinkedList:
    case DSCode::Properties:
    case DSCode::PdxType:
    case DSCode::BooleanArray:
    case DSCode::CharArray:
    case DSCode::NullObj:
    case DSCode::CacheableString:
    case DSCode::Class:
    case DSCode::JavaSerializable:
    case DSCode::DataSerializable:
    case DSCode::CacheableBytes:
    case DSCode::CacheableInt16Array:
    case DSCode::CacheableInt32Array:
    case DSCode::CacheableInt64Array:
    case DSCode::CacheableFloatArray:
    case DSCode::CacheableDoubleArray:
    case DSCode::CacheableObjectArray:
    case DSCode::CacheableBoolean:
    case DSCode::CacheableCharacter:
    case DSCode::CacheableByte:
    case DSCode::CacheableInt16:
    case DSCode::CacheableInt32:
    case DSCode::CacheableInt64:
    case DSCode::CacheableFloat:
    case DSCode::CacheableDouble:
    case DSCode::CacheableDate:
    case DSCode::CacheableFileName:
    case DSCode::CacheableStringArray:
    case DSCode::CacheableArrayList:
    case DSCode::CacheableHashSet:
    case DSCode::CacheableHashMap:
    case DSCode::CacheableTimeUnit:
    case DSCode::CacheableNullString:
    case DSCode::CacheableHashTable:
    case DSCode::CacheableVector:
    case DSCode::CacheableIdentityHashMap:
    case DSCode::CacheableLinkedHashSet:
    case DSCode::CacheableStack:
    case DSCode::CacheableASCIIString:
    case DSCode::CacheableASCIIStringHuge:
    case DSCode::CacheableStringHuge:
    case DSCode::PDX_ENUM:
    case DSCode::PDX:
      break;
  }
  TypeFactoryMethod createType =
      input.getCache()->getTypeRegistry().getCreationFunction(classId);

  if (createType == nullptr) {
    LOGERROR(
        "Unregistered class ID %d during deserialization: Did the "
        "application register serialization types?",
        classId);

    // instead of a null key or null value... an Exception should be thrown..
    throw IllegalStateException("Unregistered class ID in deserialization");
  }

  std::shared_ptr<DataSerializable> serializableObject(
      std::dynamic_pointer_cast<DataSerializable>(createType()));

  serializableObject->fromData(input);

  return serializableObject;
}