public IResourceTypeRegistration BuildRegistration(Type type, string resourceTypeName = null,
Func <ParameterExpression, string, BinaryExpression> filterByIdFactory = null,
Func <ParameterExpression, Expression> sortByIdFactory = null)
{
if (resourceTypeName == null)
{
resourceTypeName = _namingConventions.GetResourceTypeNameForType(type);
}
var fieldMap = new Dictionary <string, ResourceTypeField>();
var idProperty = CalculateIdProperty(type);
if (idProperty == null)
{
throw new InvalidOperationException(String.Format(
"Unable to determine Id property for type `{0}`.", type.Name));
}
var props = type.GetProperties().OrderBy(p => p.Name);
foreach (var prop in props)
{
if (prop == idProperty)
{
continue;
}
var ignore = prop.CustomAttributes.Any(c => c.AttributeType == typeof(JsonIgnoreAttribute));
if (ignore)
{
continue;
}
var property = CreateResourceTypeField(prop);
var jsonKey = property.JsonKey;
if (jsonKey == "id")
{
throw new InvalidOperationException(
String.Format(
"Failed to register type `{0}` because it contains a non-id property that would serialize as \"id\".",
type.Name));
}
if (jsonKey == "type")
{
throw new InvalidOperationException(
String.Format(
"Failed to register type `{0}` because it contains a property that would serialize as \"type\".",
type.Name));
}
if (fieldMap.ContainsKey(jsonKey))
{
throw new InvalidOperationException(
String.Format(
"Failed to register type `{0}` because contains multiple properties that would serialize as `{1}`.",
type.Name, jsonKey));
}
fieldMap[jsonKey] = property;
}
if (filterByIdFactory == null)
{
filterByIdFactory = (param, id) =>
{
var propertyExpr = Expression.Property(param, idProperty);
object obj = id;
if (obj == null)
{
var t = propertyExpr.Type;
if (t.IsValueType)
{
obj = Activator.CreateInstance(t);
}
}
var idExpr = Expression.Constant(Convert.ChangeType(obj, propertyExpr.Type));
return(Expression.Equal(propertyExpr, idExpr));
};
}
if (sortByIdFactory == null)
{
sortByIdFactory = param => Expression.Property(param, idProperty);
}
return(new ResourceTypeRegistration(type, idProperty, resourceTypeName, fieldMap, filterByIdFactory,
sortByIdFactory));
}
