internal Activity GetRootActivity(Type workflowType, bool createNew, bool initForRuntime)
{
Activity root = null;
if (createNew)
{
return(LoadRootActivity(workflowType, false, initForRuntime));
}
bool exist;
root = workflowTypes.GetOrGenerateDefinition(workflowType, null, null, null, initForRuntime, out exist);
if (exist)
{
return(root);
}
// Set the locking object used for cloning the definition
// for non-internal use (WorkflowInstance.GetWorkflowDefinition
// and WorkflowCompletedEventArgs.WorkflowDefinition)
WorkflowDefinitionLock.SetWorkflowDefinitionLockObject(root, new object());
EventHandler <WorkflowDefinitionEventArgs> localWorkflowDefinitionLoaded = WorkflowDefinitionLoaded;
if (localWorkflowDefinitionLoaded != null)
{
localWorkflowDefinitionLoaded(this.workflowRuntime, new WorkflowDefinitionEventArgs(workflowType));
}
return(root);
}
// This function will create a new root activity definition tree by deserializing the xoml and the rules file.
// The last parameter createNew should be true when the caller is asking for a new definition for performing
// dynamic updates instead of a cached definition.
internal Activity GetRootActivity(string xomlText, string rulesText, bool createNew, bool initForRuntime)
{
if (string.IsNullOrEmpty(xomlText))
{
throw new ArgumentNullException("xomlText");
}
//calculate the "hash". Think 60s!
byte[] xomlHashCode = null;
MemoryStream xomlBytesStream = new MemoryStream();
using (StreamWriter streamWriter = new StreamWriter(xomlBytesStream))
{
streamWriter.Write(xomlText);
//consider rules, if they exist
if (!string.IsNullOrEmpty(rulesText))
{
streamWriter.Write(rulesText);
}
streamWriter.Flush();
xomlBytesStream.Position = 0;
xomlHashCode = MD5HashHelper.ComputeHash(xomlBytesStream.GetBuffer());
}
if (createNew)
{
return(LoadRootActivity(xomlText, rulesText, xomlHashCode, false, initForRuntime));
}
bool exist;
Activity root = xomlFragments.GetOrGenerateDefinition(null, xomlText, rulesText, xomlHashCode, initForRuntime, out exist);
if (exist)
{
return(root);
}
// Set the locking object used for cloning the definition
// for non-internal use (WorkflowInstance.GetWorkflowDefinition
// and WorkflowCompletedEventArgs.WorkflowDefinition)
WorkflowDefinitionLock.SetWorkflowDefinitionLockObject(root, new object());
EventHandler <WorkflowDefinitionEventArgs> localWorkflowDefinitionLoaded = WorkflowDefinitionLoaded;
if (localWorkflowDefinitionLoaded != null)
{
localWorkflowDefinitionLoaded(this.workflowRuntime, new WorkflowDefinitionEventArgs(xomlHashCode));
}
return(root);
}
internal Activity GetRootActivity(Type workflowType, bool createNew, bool initForRuntime)
{
Activity dependencyObject = null;
bool flag;
if (createNew)
{
return(this.LoadRootActivity(workflowType, false, initForRuntime));
}
dependencyObject = this.workflowTypes.GetOrGenerateDefinition(workflowType, null, null, null, initForRuntime, out flag);
if (!flag)
{
WorkflowDefinitionLock.SetWorkflowDefinitionLockObject(dependencyObject, new object());
EventHandler <WorkflowDefinitionEventArgs> workflowDefinitionLoaded = this.WorkflowDefinitionLoaded;
if (workflowDefinitionLoaded != null)
{
workflowDefinitionLoaded(this.workflowRuntime, new WorkflowDefinitionEventArgs(workflowType));
}
}
return(dependencyObject);
}
internal Activity GetRootActivity(string xomlText, string rulesText, bool createNew, bool initForRuntime)
{
bool flag;
if (string.IsNullOrEmpty(xomlText))
{
throw new ArgumentNullException("xomlText");
}
byte[] xomlHashCode = null;
MemoryStream stream = new MemoryStream();
using (StreamWriter writer = new StreamWriter(stream))
{
writer.Write(xomlText);
if (!string.IsNullOrEmpty(rulesText))
{
writer.Write(rulesText);
}
writer.Flush();
stream.Position = 0L;
xomlHashCode = MD5HashHelper.ComputeHash(stream.GetBuffer());
}
if (createNew)
{
return(this.LoadRootActivity(xomlText, rulesText, xomlHashCode, false, initForRuntime));
}
Activity dependencyObject = this.xomlFragments.GetOrGenerateDefinition(null, xomlText, rulesText, xomlHashCode, initForRuntime, out flag);
if (!flag)
{
WorkflowDefinitionLock.SetWorkflowDefinitionLockObject(dependencyObject, new object());
EventHandler <WorkflowDefinitionEventArgs> workflowDefinitionLoaded = this.WorkflowDefinitionLoaded;
if (workflowDefinitionLoaded != null)
{
workflowDefinitionLoaded(this.workflowRuntime, new WorkflowDefinitionEventArgs(xomlHashCode));
}
}
return(dependencyObject);
}
// This function will create a new root activity definition tree by deserializing the xoml and the rules file.
// The last parameter createNew should be true when the caller is asking for a new definition for performing
// dynamic updates instead of a cached definition.
internal Activity GetRootActivity(string xomlText, string rulesText, bool createNew, bool initForRuntime)
{
if (string.IsNullOrEmpty(xomlText))
{
throw new ArgumentNullException("xomlText");
}
//calculate the "hash". Think 60s!
byte[] xomlHashCode = null;
MemoryStream xomlBytesStream = new MemoryStream();
using (StreamWriter streamWriter = new StreamWriter(xomlBytesStream))
{
streamWriter.Write(xomlText);
//consider rules, if they exist
if (!string.IsNullOrEmpty(rulesText))
{
streamWriter.Write(rulesText);
}
streamWriter.Flush();
xomlBytesStream.Position = 0;
if (LocalAppContextSwitches.UseLegacyHashForWorkflowDefinitionDispenserCacheKey)
{
xomlHashCode = MD5HashHelper.ComputeHash(xomlBytesStream.GetBuffer());
}
else
{
SHA256 sha256Provider = new SHA256CryptoServiceProvider();
byte[] xomlHashCode256 = sha256Provider.ComputeHash(xomlBytesStream.GetBuffer());
// The debugger "DigestComparer" expects 16 bytes.
xomlHashCode = new byte[16];
Array.Copy(xomlHashCode256, xomlHashCode, Math.Min(xomlHashCode.Length, xomlHashCode256.Length));
}
}
if (createNew)
{
return(LoadRootActivity(xomlText, rulesText, xomlHashCode, false, initForRuntime));
}
bool exist;
Activity root = xomlFragments.GetOrGenerateDefinition(null, xomlText, rulesText, xomlHashCode, initForRuntime, out exist);
if (exist)
{
return(root);
}
// Set the locking object used for cloning the definition
// for non-internal use (WorkflowInstance.GetWorkflowDefinition
// and WorkflowCompletedEventArgs.WorkflowDefinition)
WorkflowDefinitionLock.SetWorkflowDefinitionLockObject(root, new object());
EventHandler <WorkflowDefinitionEventArgs> localWorkflowDefinitionLoaded = WorkflowDefinitionLoaded;
if (localWorkflowDefinitionLoaded != null)
{
localWorkflowDefinitionLoaded(this.workflowRuntime, new WorkflowDefinitionEventArgs(xomlHashCode));
}
return(root);
}