public object StartOperation(bool canCreateInstance)
{
using (StartOperationScope scope = new StartOperationScope(this))
{
if (this.markedForCompletion)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(
new InstanceNotFoundException(this.InstanceId));
}
if (this.instance == null)
{
if (!TryActivateInstance(canCreateInstance))
{
using (PersistenceScope persistenceScope = new PersistenceScope(
this.saveStateInOperationTransaction,
this.clonedTransaction))
{
if (this.lockingProvider != null)
{
this.instance = this.lockingProvider.Load(this.operationTimeout, true);
}
else
{
this.instance = this.provider.Load(this.operationTimeout);
}
if (DiagnosticUtility.ShouldTraceInformation)
{
string traceText = SR2.GetString(SR2.ServiceDurableInstanceLoadedDetails, this.InstanceId, (this.lockingProvider != null) ? "True" : "False");
TraceUtility.TraceEvent(TraceEventType.Information,
TraceCode.ServiceDurableInstanceLoaded, SR.GetString(SR.TraceCodeServiceDurableInstanceLoaded),
new StringTraceRecord("DurableInstanceDetail", traceText),
this, null);
}
}
this.existsInPersistence = true;
}
}
scope.Complete();
}
Fx.Assert(
this.instance != null,
"Instance should definitely be non-null here or we should have thrown an exception.");
return(this.instance);
}
public StartOperationAsyncResult(ServiceDurableInstance durableInstance, bool canCreateInstance, AsyncCallback callback, object state)
: base(callback, state)
{
this.durableInstance = durableInstance;
bool completeSelf = false;
IAsyncResult result = null;
this.operationContext = OperationContext.Current;
scope = new StartOperationScope(this.durableInstance);
bool success = false;
try
{
if (this.durableInstance.instance == null)
{
if (this.durableInstance.TryActivateInstance(canCreateInstance))
{
completeSelf = true;
}
else
{
using (PersistenceScope persistenceScope = new PersistenceScope(
this.durableInstance.saveStateInOperationTransaction,
this.durableInstance.clonedTransaction))
{
if (this.durableInstance.lockingProvider != null)
{
result = this.durableInstance.lockingProvider.BeginLoad(this.durableInstance.operationTimeout, true, loadCallback, this);
}
else
{
result = this.durableInstance.provider.BeginLoad(this.durableInstance.operationTimeout, loadCallback, this);
}
}
this.durableInstance.existsInPersistence = true;
if (result.CompletedSynchronously)
{
completeSelf = true;
}
}
}
else
{
completeSelf = true;
}
success = true;
}
finally
{
if (!success)
{
scope.Dispose();
}
}
if (completeSelf)
{
try
{
if (result != null)
{
this.durableInstance.instance = this.durableInstance.provider.EndLoad(result);
}
Fx.Assert(this.durableInstance.instance != null,
"The instance should always be set here.");
Complete(true);
scope.Complete();
}
finally
{
scope.Dispose();
}
}
}
public object StartOperation(bool canCreateInstance)
{
using (StartOperationScope scope = new StartOperationScope(this))
{
if (this.markedForCompletion)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(
new InstanceNotFoundException(this.InstanceId));
}
if (this.instance == null)
{
if (!TryActivateInstance(canCreateInstance))
{
using (PersistenceScope persistenceScope = new PersistenceScope(
this.saveStateInOperationTransaction,
this.clonedTransaction))
{
if (this.lockingProvider != null)
{
this.instance = this.lockingProvider.Load(this.operationTimeout, true);
}
else
{
this.instance = this.provider.Load(this.operationTimeout);
}
if (DiagnosticUtility.ShouldTraceInformation)
{
string traceText = SR2.GetString(SR2.ServiceDurableInstanceLoadedDetails, this.InstanceId, (this.lockingProvider != null) ? "True" : "False");
TraceUtility.TraceEvent(TraceEventType.Information,
TraceCode.ServiceDurableInstanceLoaded, SR.GetString(SR.TraceCodeServiceDurableInstanceLoaded),
new StringTraceRecord("DurableInstanceDetail", traceText),
this, null);
}
}
this.existsInPersistence = true;
}
}
scope.Complete();
}
Fx.Assert(
this.instance != null,
"Instance should definitely be non-null here or we should have thrown an exception.");
return this.instance;
}
public StartOperationAsyncResult(ServiceDurableInstance durableInstance, bool canCreateInstance, AsyncCallback callback, object state)
: base(callback, state)
{
this.durableInstance = durableInstance;
bool completeSelf = false;
IAsyncResult result = null;
this.operationContext = OperationContext.Current;
scope = new StartOperationScope(this.durableInstance);
bool success = false;
try
{
if (this.durableInstance.instance == null)
{
if (this.durableInstance.TryActivateInstance(canCreateInstance))
{
completeSelf = true;
}
else
{
using (PersistenceScope persistenceScope = new PersistenceScope(
this.durableInstance.saveStateInOperationTransaction,
this.durableInstance.clonedTransaction))
{
if (this.durableInstance.lockingProvider != null)
{
result = this.durableInstance.lockingProvider.BeginLoad(this.durableInstance.operationTimeout, true, loadCallback, this);
}
else
{
result = this.durableInstance.provider.BeginLoad(this.durableInstance.operationTimeout, loadCallback, this);
}
}
this.durableInstance.existsInPersistence = true;
if (result.CompletedSynchronously)
{
completeSelf = true;
}
}
}
else
{
completeSelf = true;
}
success = true;
}
finally
{
if (!success)
{
scope.Dispose();
}
}
if (completeSelf)
{
try
{
if (result != null)
{
this.durableInstance.instance = this.durableInstance.provider.EndLoad(result);
}
Fx.Assert(this.durableInstance.instance != null,
"The instance should always be set here.");
Complete(true);
scope.Complete();
}
finally
{
scope.Dispose();
}
}
}
