public static ExprDotEnumerationSource GetEnumerationSource(ExprNode inputExpression, StreamTypeService streamTypeService, EventAdapterService eventAdapterService, int statementId, bool hasEnumerationMethod, bool disablePropertyExpressionEventCollCache)
{
var rootNodeEvaluator = inputExpression.ExprEvaluator;
ExprEvaluatorEnumeration rootLambdaEvaluator = null;
EPType info = null;
if (rootNodeEvaluator is ExprEvaluatorEnumeration)
{
rootLambdaEvaluator = (ExprEvaluatorEnumeration)rootNodeEvaluator;
if (rootLambdaEvaluator.GetEventTypeCollection(eventAdapterService, statementId) != null)
{
info = EPTypeHelper.CollectionOfEvents(rootLambdaEvaluator.GetEventTypeCollection(eventAdapterService, statementId));
}
else if (rootLambdaEvaluator.GetEventTypeSingle(eventAdapterService, statementId) != null)
{
info = EPTypeHelper.SingleEvent(rootLambdaEvaluator.GetEventTypeSingle(eventAdapterService, statementId));
}
else if (rootLambdaEvaluator.ComponentTypeCollection != null)
{
info = EPTypeHelper.CollectionOfSingleValue(rootLambdaEvaluator.ComponentTypeCollection);
}
else
{
rootLambdaEvaluator = null; // not a lambda evaluator
}
}
else if (inputExpression is ExprIdentNode)
{
var identNode = (ExprIdentNode)inputExpression;
var streamId = identNode.StreamId;
var streamType = streamTypeService.EventTypes[streamId];
return(GetPropertyEnumerationSource(identNode.ResolvedPropertyName, streamId, streamType, hasEnumerationMethod, disablePropertyExpressionEventCollCache));
}
return(new ExprDotEnumerationSource(info, null, rootLambdaEvaluator));
}
public EventType GetEventTypeCollection(EventAdapterService eventAdapterService, int statementId)
{
return(_innerEvaluatorLambda != null?_innerEvaluatorLambda.GetEventTypeCollection(eventAdapterService, statementId) : null);
}
