/// <summary>
/// Auto maps all members for the given type. If a member
/// is mapped again it will override the existing map.
/// </summary>
/// <param name="options">Options for auto mapping.</param>
public virtual void AutoMap(AutoMapOptions options)
{
var type = GetGenericType();
if (typeof(IEnumerable).IsAssignableFrom(type))
{
throw new ConfigurationException("Types that inherit IEnumerable cannot be auto mapped. " +
"Did you accidentally call GetRecord or WriteRecord which " +
"acts on a single record instead of calling GetRecords or " +
"WriteRecords which acts on a list of records?");
}
var mapParents = new LinkedList <Type>();
if (options.ShouldUseConstructorParameters(type))
{
// This type doesn't have a parameterless constructor so we can't create an
// instance and set it's member. Constructor parameters need to be created
// instead. Writing only uses getters, so members will also be mapped
// for writing purposes.
AutoMapConstructorParameters(this, options, mapParents);
}
AutoMapMembers(this, options, mapParents);
}
/// <summary>
/// Auto maps the given map using constructor parameters.
/// </summary>
/// <param name="map">The map to auto map.</param>
/// <param name="options">Options for auto mapping.</param>
/// <param name="mapParents">The list of parents for the map.</param>
/// <param name="indexStart">The index starting point.</param>
protected virtual void AutoMapConstructorParameters(ClassMap map, AutoMapOptions options, LinkedList <Type> mapParents, int indexStart = 0)
{
var type = map.GetGenericType();
var constructor = options.GetConstructor(map.ClassType);
var parameters = constructor.GetParameters();
foreach (var parameter in parameters)
{
var typeConverterType = TypeConverterFactory.Current.GetConverter(parameter.ParameterType).GetType();
var parameterMap = new ParameterMap(parameter);
var memberTypeInfo = parameter.ParameterType.GetTypeInfo();
var isDefaultConverter = typeConverterType == typeof(DefaultTypeConverter);
if (isDefaultConverter && (memberTypeInfo.HasParameterlessConstructor() || memberTypeInfo.IsUserDefinedStruct()))
{
// If the type is not one covered by our type converters
// and it has a parameterless constructor, create a
// reference map for it.
if (options.IgnoreReferences)
{
throw new InvalidOperationException($"Configuration '{nameof( options.IgnoreReferences )}' can't be true " +
"when using types without a default constructor. Constructor parameters " +
"are used and all members including references must be used.");
}
if (CheckForCircularReference(parameter.ParameterType, mapParents))
{
throw new InvalidOperationException($"A circular reference was detected in constructor paramter '{parameter.Name}'." +
"Since all parameters must be supplied for a constructor, this parameter can't be skipped.");
}
mapParents.AddLast(type);
var refMapType = typeof(DefaultClassMap <>).MakeGenericType(parameter.ParameterType);
var refMap = (ClassMap)ReflectionHelper.CreateInstance(refMapType);
var refOptions = options.Copy();
refOptions.IgnoreReferences = false;
AutoMapMembers(refMap, options, mapParents, Math.Max(map.GetMaxIndex() + 1, indexStart));
mapParents.Drop(mapParents.Find(type));
var referenceMap = new ParameterReferenceMap(parameter, refMap);
if (options.PrefixReferenceHeaders)
{
referenceMap.Prefix();
}
parameterMap.ReferenceMap = referenceMap;
}
else if (options.ShouldUseConstructorParameters(parameter.ParameterType))
{
mapParents.AddLast(type);
var constructorMapType = typeof(DefaultClassMap <>).MakeGenericType(parameter.ParameterType);
var constructorMap = (ClassMap)ReflectionHelper.CreateInstance(constructorMapType);
var constructorOptions = options.Copy();
constructorOptions.IgnoreReferences = false;
// Need to use Max here for nested types.
AutoMapConstructorParameters(constructorMap, constructorOptions, mapParents, Math.Max(map.GetMaxIndex() + 1, indexStart));
mapParents.Drop(mapParents.Find(type));
parameterMap.ConstructorTypeMap = constructorMap;
}
else
{
parameterMap.Data.TypeConverterOptions = TypeConverterOptions.Merge(new TypeConverterOptions(), options.TypeConverterOptionsFactory.GetOptions(parameter.ParameterType), parameterMap.Data.TypeConverterOptions);
parameterMap.Data.Index = map.GetMaxIndex() + 1;
}
map.ParameterMaps.Add(parameterMap);
}
map.ReIndex(indexStart);
}
