/// <summary>
/// Creates a set of event names representing all the possible forms of the event as defined
/// by the graph field.
/// </summary>
/// <param name="schemaType">The raw data type of the target schema.</param>
/// <param name="field">The field to create names for.</param>
/// <returns>IEnumerable<SubscriptionEventName>.</returns>
private static IEnumerable <SubscriptionEventName> FromSchemaTypeAndField(Type schemaType, ISubscriptionGraphField field)
{
yield return(new SubscriptionEventName(schemaType, field.Route.Path));
if (!string.IsNullOrWhiteSpace(field.EventName))
{
yield return(new SubscriptionEventName(schemaType, field.EventName));
}
}
/// <summary>
/// Creates a set of event names representing all the possible forms of the event as defined
/// by the grpah field.
/// </summary>
/// <typeparam name="TSchema">The type of the schema the graph field exists in.</typeparam>
/// <param name="field">The field to create names for.</param>
/// <returns>IEnumerable<SubscriptionEventName>.</returns>
public static IEnumerable <SubscriptionEventName> FromGraphField <TSchema>(ISubscriptionGraphField field)
where TSchema : class, ISchema
{
Validation.ThrowIfNull(field, nameof(field));
return(SubscriptionEventName.FromSchemaTypeAndField(typeof(TSchema), field));
}
/// <summary>
/// Creates a set of event names representing all the possible forms of the event as defined
/// by the graph field.
/// </summary>
/// <param name="schema">The schema owning the field definition.</param>
/// <param name="field">The field to create names for.</param>
/// <returns>IEnumerable<SubscriptionEventName>.</returns>
public static IEnumerable <SubscriptionEventName> FromGraphField(ISchema schema, ISubscriptionGraphField field)
{
Validation.ThrowIfNull(schema, nameof(schema));
Validation.ThrowIfNull(field, nameof(field));
return(SubscriptionEventName.FromSchemaTypeAndField(schema.GetType(), field));
}
/// <summary>
/// Initializes a new instance of the <see cref="ApolloSubscriptionFieldEventArgs" /> class.
/// </summary>
/// <param name="graphField">The graph field.</param>
public ApolloSubscriptionFieldEventArgs(ISubscriptionGraphField graphField)
{
this.Field = Validation.ThrowIfNullOrReturn(graphField, nameof(graphField));
}
