/// <summary>
/// Collect the terms from the JsonLdObject and all its child properties.
/// </summary>
/// <param name="obj">The JsonLdObject.</param>
/// <returns>The list of terms.</returns>
private static IDictionary <string, string> GetTerms(IJsonLdObject obj)
{
var terms = new Dictionary <string, string>();
if (obj == null || obj.Terms == null)
{
return(terms);
}
foreach (var key in obj.Terms.Keys)
{
terms[key] = obj.Terms[key];
}
// Walk the object to find embedded JsonLdObjects
foreach (var propertyInfo in obj.GetType().GetProperties())
{
if (!propertyInfo.CanRead)
{
continue;
}
if (JsonLdObjectType.IsAssignableFrom(propertyInfo.PropertyType))
{
var propertyValue = (IJsonLdObject)propertyInfo.GetValue(obj, null);
var propertyTerms = GetTerms(propertyValue);
foreach (var key in propertyTerms.Keys)
{
terms[key] = propertyTerms[key];
}
}
else if (JsonLdObjectArrayType.IsAssignableFrom(propertyInfo.PropertyType))
{
var propertyValue = (IEnumerable <IJsonLdObject>)propertyInfo.GetValue(obj, null);
if (propertyValue != null)
{
foreach (var jsonLdObject in propertyValue)
{
var propertyTerms = GetTerms(jsonLdObject);
foreach (var key in propertyTerms.Keys)
{
terms[key] = propertyTerms[key];
}
}
}
}
}
return(terms);
}
/// <summary>
/// Get the external context from this object.
/// </summary>
/// <param name="obj">The JsonLdObject.</param>
/// <returns>The last external context.</returns>
private static Uri GetExternalContextId(IJsonLdObject obj)
{
if (obj == null)
{
return(null);
}
var externalContextId = obj.ExternalContextId;
// Walk the object to find embedded JsonLdObjects
foreach (var propertyInfo in obj.GetType().GetProperties())
{
if (!propertyInfo.CanRead)
{
continue;
}
if (JsonLdObjectType.IsAssignableFrom(propertyInfo.PropertyType))
{
var propertyValue = (IJsonLdObject)propertyInfo.GetValue(obj, null);
var contextId = GetExternalContextId(propertyValue);
if (contextId != null)
{
externalContextId = contextId;
}
}
else if (JsonLdObjectArrayType.IsAssignableFrom(propertyInfo.PropertyType))
{
var propertyValue = (IEnumerable <IJsonLdObject>)propertyInfo.GetValue(obj, null);
if (propertyValue != null)
{
foreach (var jsonLdObject in propertyValue)
{
var contextId = GetExternalContextId(jsonLdObject);
if (contextId != null)
{
externalContextId = contextId;
}
}
}
}
}
return(externalContextId);
}
/// <summary>
/// Collect the terms from the JsonLdObject and all its child properties.
/// </summary>
/// <param name="obj">The JsonLdObject.</param>
/// <returns>The list of terms.</returns>
private static IDictionary<string, string> GetTerms(IJsonLdObject obj)
{
var terms = new Dictionary<string, string>();
if (obj == null || obj.Terms == null) return terms;
foreach (var key in obj.Terms.Keys)
{
terms[key] = obj.Terms[key];
}
// Walk the object to find embedded JsonLdObjects
foreach (var propertyInfo in obj.GetType().GetProperties())
{
if (!propertyInfo.CanRead) continue;
if (JsonLdObjectType.IsAssignableFrom(propertyInfo.PropertyType))
{
var propertyValue = (IJsonLdObject) propertyInfo.GetValue(obj, null);
var propertyTerms = GetTerms(propertyValue);
foreach (var key in propertyTerms.Keys)
{
terms[key] = propertyTerms[key];
}
}
else if (JsonLdObjectArrayType.IsAssignableFrom(propertyInfo.PropertyType))
{
var propertyValue = (IEnumerable<IJsonLdObject>) propertyInfo.GetValue(obj, null);
if (propertyValue != null)
{
foreach (var jsonLdObject in propertyValue)
{
var propertyTerms = GetTerms(jsonLdObject);
foreach (var key in propertyTerms.Keys)
{
terms[key] = propertyTerms[key];
}
}
}
}
}
return terms;
}
/// <summary>
/// Get the external context from this object.
/// </summary>
/// <param name="obj">The JsonLdObject.</param>
/// <returns>The last external context.</returns>
private static Uri GetExternalContextId(IJsonLdObject obj)
{
if (obj == null) return null;
var externalContextId = obj.ExternalContextId;
// Walk the object to find embedded JsonLdObjects
foreach (var propertyInfo in obj.GetType().GetProperties())
{
if (!propertyInfo.CanRead) continue;
if (JsonLdObjectType.IsAssignableFrom(propertyInfo.PropertyType))
{
var propertyValue = (IJsonLdObject)propertyInfo.GetValue(obj, null);
var contextId = GetExternalContextId(propertyValue);
if (contextId != null)
externalContextId = contextId;
}
else if (JsonLdObjectArrayType.IsAssignableFrom(propertyInfo.PropertyType))
{
var propertyValue = (IEnumerable<IJsonLdObject>)propertyInfo.GetValue(obj, null);
if (propertyValue != null)
{
foreach (var jsonLdObject in propertyValue)
{
var contextId = GetExternalContextId(jsonLdObject);
if (contextId != null)
externalContextId = contextId;
}
}
}
}
return externalContextId;
}
/// <summary>
/// Collect the terms from the JsonLdObject and all its child properties.
/// </summary>
/// <param name="obj">The JsonLdObject.</param>
/// <returns>The list of terms.</returns>
private static IDictionary <string, object> GetTerms(IJsonLdObject obj)
{
var terms = new Dictionary <string, object>();
if (obj?.Terms == null)
{
return(terms);
}
foreach (var key in obj.Terms.Keys)
{
terms[key] = obj.Terms[key];
}
// Check for terms already in the @context
if (obj.Context is JArray context && context.Count > 1)
{
for (var index = 1; index < context.Count; index++)
{
var contextObject = context[index] as JObject;
if (contextObject?.First is JProperty term)
{
terms[term.Name] = term.Value;
}
}
}
// Walk the object to find embedded JsonLdObjects
foreach (var propertyInfo in obj.GetType().GetTypeInfo().GetProperties())
{
if (!propertyInfo.CanRead)
{
continue;
}
if (JsonLdObjectType.GetTypeInfo().IsAssignableFrom(propertyInfo.PropertyType))
{
var propertyValue = (IJsonLdObject)propertyInfo.GetValue(obj, null);
var propertyTerms = GetTerms(propertyValue);
foreach (var key in propertyTerms.Keys)
{
terms[key] = propertyTerms[key];
}
}
else if (JsonLdObjectArrayType.GetTypeInfo().IsAssignableFrom(propertyInfo.PropertyType))
{
var propertyValue = (IEnumerable <IJsonLdObject>)propertyInfo.GetValue(obj, null);
if (propertyValue != null)
{
foreach (var jsonLdObject in propertyValue)
{
var propertyTerms = GetTerms(jsonLdObject);
foreach (var key in propertyTerms.Keys)
{
terms[key] = propertyTerms[key];
}
}
}
}
}
return(terms);
}
