int IComparer <PropertyInfo> .Compare(PropertyInfo x, PropertyInfo y)
{
int ret = 0;
int orderX = 0;
int orderY = 0;
object[] attrX = x.GetCustomAttributes(typeof(PipelineEventAttribute), true);
object[] attrY = y.GetCustomAttributes(typeof(PipelineEventAttribute), true);
if (attrX.Length > 0)
{
PipelineEventAttribute attr = (PipelineEventAttribute)attrX[0];
orderX = attr.Order;
}
if (attrY.Length > 0)
{
PipelineEventAttribute attr = (PipelineEventAttribute)attrY[0];
orderY = attr.Order;
}
if (orderX < orderY)
{
ret = -1;
}
else if (orderX > orderY)
{
ret = 1;
}
return(ret);
}
public void Execute <C>(C context) where C : PipelineContext
{
PropertyInfo[] properties = PipelineEvent.GetType().GetProperties();
List <PropertyInfo> sortedProperties = properties.ToList <PropertyInfo>();
sortedProperties.Sort(new PropertyComparer());
System.Transactions.TransactionScopeOption pipelineScopeOption = TransactionRequirement(sortedProperties);
using (TransactionScope pipelineScope = new TransactionScope(pipelineScopeOption))
{
sortedProperties.ForEach(property =>
{
object[] attributes =
property.GetCustomAttributes(typeof(PipelineEventAttribute), true);
if (attributes.Length > 0)
{
PipelineEventAttribute attr = (PipelineEventAttribute)attributes[0];
System.Transactions.TransactionScopeOption scopeOption =
GetTransactionScopeOption(attr.TransactionScopeOption);
object value = property.GetValue(PipelineEvent, null);
Action <C> eventProp = (Action <C>)value;
if (eventProp != null)
{
using (TransactionScope eventScope = new TransactionScope(scopeOption))
{
if (eventProp != null)
{
eventProp(context);
if (context.Cancel == true)
{
throw new Exception(property.Name + " failed.");
}
}
eventScope.Complete();
}
}
}
});
pipelineScope.Complete();
}
}
private System.Transactions.TransactionScopeOption TransactionRequirement(List <PropertyInfo> sortedProperties)
{
System.Transactions.TransactionScopeOption pipelineScopeOption = System.Transactions.TransactionScopeOption.Suppress;
foreach (PropertyInfo property in sortedProperties)
{
object[] attributes = property.GetCustomAttributes(typeof(PipelineEventAttribute), true);
if (attributes.Length > 0)
{
PipelineEventAttribute attr = (PipelineEventAttribute)attributes[0];
if (attr.TransactionScopeOption != TransactionScopeOption.Suppress)
{
pipelineScopeOption = System.Transactions.TransactionScopeOption.Required;
break;
}
}
}
return(pipelineScopeOption);
}
