protected Task(AstTaskNode astNode)
: base(astNode)
{
DelayValidation = astNode.DelayValidation;
switch (astNode.IsolationLevel)
{
case IsolationLevel.Chaos:
TaskIsolationLevel = System.Data.IsolationLevel.Chaos;
break;
case IsolationLevel.ReadCommitted:
TaskIsolationLevel = System.Data.IsolationLevel.ReadCommitted;
break;
case IsolationLevel.ReadUncommitted:
TaskIsolationLevel = System.Data.IsolationLevel.ReadUncommitted;
break;
case IsolationLevel.RepeatableRead:
TaskIsolationLevel = System.Data.IsolationLevel.RepeatableRead;
break;
case IsolationLevel.Serializable:
TaskIsolationLevel = System.Data.IsolationLevel.Serializable;
break;
case IsolationLevel.Snapshot:
TaskIsolationLevel = System.Data.IsolationLevel.Snapshot;
break;
case IsolationLevel.Unspecified:
TaskIsolationLevel = System.Data.IsolationLevel.Unspecified;
break;
default:
TaskIsolationLevel = System.Data.IsolationLevel.Serializable;
break;
}
}
public static void LowerEventHandlers(AstTask.AstTaskNode astTaskNode, Executable parentExecutable, LoweringContext context)
{
foreach (AstTask.AstTaskEventHandlerNode astTaskEventHandler in astTaskNode.Events)
{
PhysicalTask.EventHandler e = new IR.Tasks.EventHandler(astTaskEventHandler, parentExecutable);
context.ParentObject.Children.Add(e);
foreach (AstTask.AstTaskNode task in astTaskEventHandler.Tasks)
{
context = new TaskLoweringContext(e);
PhysicalLoweringProcessor.Lower(task, context);
}
}
}
private static HashSet<AstTaskNode> FindPredecessors(AstTask.AstContainerTaskNode container, AstTaskNode task, AstTaskNode previousTask, Dictionary<AstTaskNode, ICollection<AstTaskNode>> successors)
{
var predecessors = new HashSet<AstTaskNode>();
if (task.PrecedenceConstraints != null)
{
foreach (var input in task.PrecedenceConstraints.Inputs)
{
if (input.OutputPath != null)
{
var predecessorNode = input.OutputPath.ParentItem as AstTaskNode;
predecessors.Add(predecessorNode);
}
}
}
//if (containerTask != null && containerTask.ConstraintMode == ContainerConstraintMode.Linear && predecessors.Count == 0 && previousTask != null)
if (container.ConstraintMode == ContainerConstraintMode.Linear && predecessors.Count == 0 && previousTask != null)
{
predecessors.Add(previousTask);
}
return predecessors;
}