public SerializeAs(SerializeAsOptions how)
{
this.How = how;
}
public SerializeAs(SerializeAsOptions how)
{
this.How = how;
}
protected void Serialize(object value, Stream writeStream, JsonWriter writer, JsonSerializer serializer, RelationAggregator aggregator)
{
writer.WriteStartObject();
// Do the Id now...
writer.WritePropertyName("id");
var idProp = _modelManager.GetIdProperty(value.GetType());
writer.WriteValue(GetValueForIdProperty(idProp, value));
// Leverage the cached map to avoid another costly call to System.Type.GetProperties()
PropertyInfo[] props = _modelManager.GetProperties(value.GetType());
// Do non-model properties first, everything else goes in "links"
//TODO: Unless embedded???
IList <PropertyInfo> modelProps = new List <PropertyInfo>();
foreach (PropertyInfo prop in props)
{
if (prop == idProp)
{
continue;
}
if (this.CanWriteTypeAsPrimitive(prop.PropertyType))
{
if (prop.GetCustomAttributes().Any(attr => attr is JsonIgnoreAttribute))
{
continue;
}
// numbers, strings, dates...
writer.WritePropertyName(_modelManager.GetJsonKeyForProperty(prop));
var propertyValue = prop.GetValue(value, null);
if (prop.PropertyType == typeof(string) &&
prop.GetCustomAttributes().Any(attr => attr is SerializeStringAsRawJsonAttribute))
{
if (propertyValue == null)
{
writer.WriteNull();
}
else
{
var minifiedValue = JsonHelpers.MinifyJson((string)propertyValue);
writer.WriteRawValue(minifiedValue);
}
}
else
{
serializer.Serialize(writer, propertyValue);
}
}
else
{
modelProps.Add(prop);
continue;
}
}
// Now do other stuff
if (modelProps.Count() > 0)
{
writer.WritePropertyName("links");
writer.WriteStartObject();
}
foreach (PropertyInfo prop in modelProps)
{
bool skip = false, iip = false;
string lt = null;
SerializeAsOptions sa = SerializeAsOptions.Ids;
object[] attrs = prop.GetCustomAttributes(true);
foreach (object attr in attrs)
{
Type attrType = attr.GetType();
if (typeof(JsonIgnoreAttribute).IsAssignableFrom(attrType))
{
skip = true;
continue;
}
if (typeof(IncludeInPayload).IsAssignableFrom(attrType))
{
iip = ((IncludeInPayload)attr).Include;
}
if (typeof(SerializeAs).IsAssignableFrom(attrType))
{
sa = ((SerializeAs)attr).How;
}
if (typeof(LinkTemplate).IsAssignableFrom(attrType))
{
lt = ((LinkTemplate)attr).TemplateString;
}
}
if (skip)
{
continue;
}
writer.WritePropertyName(_modelManager.GetJsonKeyForProperty(prop));
// Look out! If we want to SerializeAs a link, computing the property is probably
// expensive...so don't force it just to check for null early!
if (sa != SerializeAsOptions.Link && prop.GetValue(value, null) == null)
{
writer.WriteNull();
continue;
}
// Now look for enumerable-ness:
if (typeof(IEnumerable <Object>).IsAssignableFrom(prop.PropertyType))
{
switch (sa)
{
case SerializeAsOptions.Ids:
//writer.WritePropertyName(ContractResolver._modelManager.GetJsonKeyForProperty(prop));
IEnumerable <object> items = (IEnumerable <object>)prop.GetValue(value, null);
if (items == null)
{
writer.WriteValue((IEnumerable <object>)null); //TODO: Is it okay with the spec and Ember Data to return null for an empty array?
break; // LOOK OUT! Ending this case block early here!!!
}
this.WriteIdsArrayJson(writer, items, serializer);
if (iip)
{
Type itemType;
if (prop.PropertyType.IsGenericType)
{
itemType = prop.PropertyType.GetGenericArguments()[0];
}
else
{
// Must be an array at this point, right??
itemType = prop.PropertyType.GetElementType();
}
if (aggregator != null)
{
aggregator.Add(itemType, items); // should call the IEnumerable one...right?
}
}
break;
case SerializeAsOptions.Link:
if (lt == null)
{
throw new JsonSerializationException("A property was decorated with SerializeAs(SerializeAsOptions.Link) but no LinkTemplate attribute was provided.");
}
//TODO: Check for "{0}" in linkTemplate and (only) if it's there, get the Ids of all objects and "implode" them.
string href = String.Format(lt, null, GetIdFor(value));
//writer.WritePropertyName(ContractResolver._modelManager.GetJsonKeyForProperty(prop));
//TODO: Support ids and type properties in "link" object
writer.WriteStartObject();
writer.WritePropertyName("href");
writer.WriteValue(href);
writer.WriteEndObject();
break;
case SerializeAsOptions.Embedded:
// Not really supported by Ember Data yet, incidentally...but easy to implement here.
//writer.WritePropertyName(ContractResolver._modelManager.GetJsonKeyForProperty(prop));
//serializer.Serialize(writer, prop.GetValue(value, null));
this.Serialize(prop.GetValue(value, null), writeStream, writer, serializer, aggregator);
break;
}
}
else
{
var propertyValue = prop.GetValue(value, null);
if (propertyValue == null)
{
writer.WriteNull();
}
else
{
string objId = GetIdFor(propertyValue);
switch (sa)
{
case SerializeAsOptions.Ids:
//writer.WritePropertyName(ContractResolver._modelManager.GetJsonKeyForProperty(prop));
serializer.Serialize(writer, objId);
if (iip)
{
if (aggregator != null)
{
aggregator.Add(prop.PropertyType, prop.GetValue(value, null));
}
}
break;
case SerializeAsOptions.Link:
if (lt == null)
{
throw new JsonSerializationException(
"A property was decorated with SerializeAs(SerializeAsOptions.Link) but no LinkTemplate attribute was provided.");
}
string link = String.Format(lt, objId,
GetIdFor(value)); //value.GetType().GetProperty("Id").GetValue(value, null));
//writer.WritePropertyName(ContractResolver._modelManager.GetJsonKeyForProperty(prop));
writer.WriteStartObject();
writer.WritePropertyName("href");
writer.WriteValue(link);
writer.WriteEndObject();
break;
case SerializeAsOptions.Embedded:
// Not really supported by Ember Data yet, incidentally...but easy to implement here.
//writer.WritePropertyName(ContractResolver._modelManager.GetJsonKeyForProperty(prop));
//serializer.Serialize(writer, prop.GetValue(value, null));
this.Serialize(prop.GetValue(value, null), writeStream, writer, serializer, aggregator);
break;
}
}
}
}
if (modelProps.Count() > 0)
{
writer.WriteEndObject();
}
writer.WriteEndObject();
}
