protected void SetInOperator(LogicalOperator op)
{
if (InOperators.Count() > 0)
{
throw new TranspilerInternalErrorException("InOperator is already set");
}
op.AddOutOperator(this);
AddInOperator(op);
}
protected void SetInOperators(LogicalOperator opLeft, LogicalOperator opRight)
{
if (InOperators.Count() > 0)
{
throw new TranspilerInternalErrorException("InOperatorLeft or InOperatorRight is already set.");
}
opLeft.AddOutOperator(this);
opRight.AddOutOperator(this);
AddInOperator(opLeft);
AddInOperator(opRight);
}
/// <summary>
/// Operator graph traverse: get all upstream operators of a particular type
/// </summary>
/// <typeparam name="T"></typeparam>
/// <returns></returns>
public IEnumerable <T> GetAllUpstreamOperatorsOfType <T>() where T : LogicalOperator
{
var opList = new List <T>();
if (InOperators.Count() > 0)
{
opList.AddRange(
InOperators
.SelectMany(op => op.GetAllUpstreamOperatorsOfType <T>())
.Distinct() // we do have multiplexing (multiple output) for operators in some scenarios, so we need to distinct here
);
}
if (this is T)
{
opList.Add(this as T);
}
return(opList);
}
