public async Task <AttachedAttrData> GetAttachedAttribute(IAttachedProperty <IAttr> attr)
{
var plainAttr = await attr.GetProperty();
var required = await attr.IsRequired();
var cardinality = await attr.GetCardinality();
var mutable = await attr.GetMutability();
var permission = await attr.GetPermission();
var provider = await GetProvider(attr.AttachmentID);
var attrData = await AttrData.Instantiate(plainAttr);
var defaultValue = await attr.GetDefaultValue();
IBoxedValue boxedDefaultValue = null;
if (null != defaultValue)
{
var shownValue = attrData.Values.Where(a => a.EventID.ToString() == defaultValue).SingleOrDefault();
boxedDefaultValue = new BoxedValueData(defaultValue, shownValue?.Value ?? defaultValue);
}
return(new AttachedAttrData(attrData, required, cardinality, mutable, permission, boxedDefaultValue, provider, attr.Conditions, attr.AttachmentID));
}
public async Task <AttachedRelationData> GetAttachedRelation(IAttachedProperty <IRelation> relation)
{
var plainRelation = await relation.GetProperty();
var required = await relation.IsRequired();
var cardinality = await relation.GetCardinality();
var mutable = await relation.GetMutability();
var permission = await relation.GetPermission();
var provider = await GetProvider(relation.AttachmentID);
return(new AttachedRelationData(plainRelation, required, cardinality, mutable, permission, provider, relation.Conditions, relation.AttachmentID));
}