[Neos] Creating custom NodeTypes: FlowQuery execution issues

[Bernhard Schmitt]

Hi there,

I've created a package for managing events as nodes in Neos, e.g. for use in a calendar. For the "Event List" and "Upcoming Event" NodeTypes, I've set up the yaml:

'CORE4.EventBase:EventAggregator':
  abstract: true
  properties:
    restrictToDocument:
      type: boolean
      ui:
        label: 'Restrict to Document'
        reloadIfChanged: TRUE
        inspector:
          group: 'aggregator'
  ui:
    inspector:
      groups:
        aggregator:
          label: 'Aggregator options'
          position: 10


'CORE4.EventBase:EventList':
  superTypes:
    - 'TYPO3.Neos:Content'
    - 'CORE4.EventBase:EventAggregator'
  ui:
    label: 'Event List'
    group: 'event'
    inspector:
      groups:
        aggregator:
          label: 'Event List options'

'CORE4.EventBase:UpcomingEvent':
  superTypes:
    - 'TYPO3.Neos:Content'
    - 'CORE4.EventBase:EventAggregator'
  ui:
    label: 'Upcoming Event'
    group: 'event'
    inspector:
      groups:
        aggregator:
          label: 'Upcoming Event options'


The corresponding ts2 looks like this:

prototype(CORE4.EventBase:EventList) >
prototype(CORE4.EventBase:EventList) < prototype(TYPO3.Neos:Content) {
	templatePath = 'resource://CORE4.EventBase/Private/Templates/NodeTypes/EventList.html'

	startNode = ${q(node).property('restrictToDocument') ? q(documentNode) : q(site)}
	events = ${this.startNode.find('[instanceof CORE4.EventBase:Event]').future().orderEventsByDate('asc')}

	hasEvents = ${this.events.count() > 0}
}

prototype(CORE4.EventBase:UpcomingEvent) >
prototype(CORE4.EventBase:UpcomingEvent) < prototype(TYPO3.Neos:Content) {
	templatePath = 'resource://CORE4.EventBase/Private/Templates/NodeTypes/UpcomingEvent.html'

	startNode = ${q(node).property('restrictToDocument') ? q(documentNode) : q(site)}
	events = ${this.startNode.find('[instanceof CORE4.EventBase:Event]').future().orderEventsByDate('asc')}

	hasEvents = ${this.events.count() > 0}
}


So much for the setup.
Now to my problem: While the EventList works just fine, the UpcomingEvent seems to simply not execute the find() part  of the FlowQuery statement, i.e. the events variable results to a FlowQuery containing the startNode alone.
Is this some kind of weird bug or did I get something conceptually wrong?