/// <summary>
/// The type initialization
/// </summary>
private static void Initialize()
{
var properties =
typeof(TObject).GetProperties(
BindingFlags.Instance | BindingFlags.Public | BindingFlags.GetProperty | BindingFlags.SetProperty);
foreach (var property in properties)
{
var publishAttribute = property.GetCustomAttribute <DeclareFieldAttribute>();
if (publishAttribute == null || !publishAttribute.Access.HasFlag(EnAccessFlag.Writable))
{
continue;
}
var propertyName = publishAttribute.Name ?? ApiDescriptionAttribute.ToCamelCase(property.Name);
var destination = Expression.Parameter(typeof(TObject), "d");
var source = Expression.Parameter(typeof(TObject), "s");
var json = Expression.Parameter(typeof(JObject), "json");
if (property.PropertyType.GetTypeInfo().IsPrimitive ||
DataUpdaterConfig.AdditionalScalarTypes.Contains(property.PropertyType) ||
DataUpdaterConfig.AdditionalScalarTypes.Any(t => property.PropertyType.GetTypeInfo().IsSubclassOf(t)) ||
property.PropertyType.GetTypeInfo().GetInterface("System.Collections.IEnumerable") != null)
{
// creating direct copy
var copy = Expression.Assign(
Expression.Property(destination, property),
Expression.Property(source, property));
var lambda = Expression.Lambda <Action <TObject, TObject, JObject> >(copy, destination, source, json);
PropertyCopiers[propertyName] = lambda.Compile();
}
else
{
var updaterType = typeof(DataUpdater <>).MakeGenericType(property.PropertyType);
var method = updaterType.GetMethod(
nameof(Update),
new[] { property.PropertyType, property.PropertyType, typeof(JObject) });
var recursiveCopy = Expression.Call(
null,
method,
Expression.Property(destination, property),
Expression.Property(source, property),
json);
var assign = Expression.Assign(
Expression.Property(destination, property),
Expression.Property(source, property));
var copy = Expression.IfThenElse(
Expression.Equal(Expression.Property(destination, property), Expression.Constant(null)),
assign,
recursiveCopy);
var lambda = Expression.Lambda <Action <TObject, TObject, JObject> >(copy, destination, source, json);
PropertyCopiers[propertyName] = lambda.Compile();
}
}
}
/// <summary>
/// Initializes static members of the <see cref="PathCreator{T, TContext}"/> class.
/// </summary>
/// <param name="context">
/// The data context.
/// </param>
private static void Initialize(TContext context)
{
if (isInitialized)
{
return;
}
lock (LockObject)
{
if (isInitialized)
{
return;
}
isInitialized = true;
var entityType = context.Model.FindEntityType(typeof(T));
if (entityType == null)
{
return;
}
foreach (var navigation in entityType.GetNavigations())
{
var declareFieldAttribute = navigation.PropertyInfo.GetCustomAttribute <DeclareFieldAttribute>();
var propertyName = declareFieldAttribute?.Name
?? ApiDescriptionAttribute.ToCamelCase(navigation.PropertyInfo.Name);
var toManyType = navigation.PropertyInfo.PropertyType.GetInterfaces()
.FirstOrDefault(
i => i.GetTypeInfo().IsGenericType &&
i.GetGenericTypeDefinition() == typeof(IEnumerable <>))
?.GetGenericArguments()[0];
if (toManyType != null)
{
NavigationProperties[propertyName] =
new PropertyDescription <TContext>(navigation.Name, toManyType, EnRelationType.OneToMany);
}
else
{
NavigationProperties[propertyName] = new PropertyDescription <TContext>(
navigation.Name,
navigation.PropertyInfo.PropertyType,
EnRelationType.OneToOne);
}
}
}
}