public override bool TryActivate(IQueryPlanState state)
{
IVariableValueCollection variables = state.Context.Variables;
foreach (ISelection?selection in _selections)
{
if (state.Selections.Contains(selection.Id) && selection.IsIncluded(variables))
{
return(true);
}
}
return(false);
}
public override void CompleteTask(IQueryPlanState state, IExecutionTask task)
{
Debug.Assert(ReferenceEquals(task.State, this), "The task must be part of this step.");
if (task is ResolverTask {
ChildTasks : { Count : > 0 }
} resolverTask)
{
foreach (ResolverTask?childTask in resolverTask.ChildTasks)
{
state.Selections.Add(childTask.Selection.Id);
}
state.RegisterUnsafe(resolverTask.ChildTasks);
}
}
/// <summary>
/// Completes a task that was spawned from this execution step.
/// </summary>
/// <param name="state">
/// The current query plan execution state.
/// </param>
/// <param name="task">
/// The execution task that was spawned from the execution task.
/// </param>
public virtual void CompleteTask(IQueryPlanState state, IExecutionTask task)
{
}
/// <summary> /// Tries to activate this execution step for the current request. /// If the activation returns <c>false</c> and it is /// not part of the current request and can be skipped. /// </summary> /// <param name="state"> /// The current query plan execution state. /// </param> /// <returns> /// Returns <c>true</c> if this step is part of the current request; /// otherwise, <c>false</c>. /// </returns> public virtual bool TryActivate(IQueryPlanState state) => true;
