protected internal override void InstantiateScopes(MigratingScopeInstance ancestorScopeInstance,
MigratingScopeInstanceBranch executionBranch, IList <ScopeImpl> scopesToInstantiate)
{
if (scopesToInstantiate.Count == 0)
{
return;
}
var ancestorScopeExecution = ancestorScopeInstance.ResolveRepresentativeExecution();
var parentExecution = ancestorScopeExecution;
foreach (var scope in scopesToInstantiate)
{
var compensationScopeExecution = parentExecution.CreateExecution();
compensationScopeExecution.IsScope = true;
compensationScopeExecution.IsEventScope = true;
//compensationScopeExecution.setActivity((IPvmActivity) scope);
compensationScopeExecution.IsActive = false;
//compensationScopeExecution.activityInstanceStarting();
//compensationScopeExecution.enterActivityInstance();
//EventSubscriptionEntity eventSubscription = EventSubscriptionEntity.createAndInsert(parentExecution,
// EventType.COMPENSATE, (ActivityImpl) scope);
//eventSubscription.Configuration = compensationScopeExecution.Id;
//executionBranch.visited(new MigratingEventScopeInstance(eventSubscription, compensationScopeExecution,
// scope));
parentExecution = compensationScopeExecution;
}
}
/// <summary>
/// Returns a list of flow scopes from the given scope until a scope is reached that is already present in the given
/// <seealso cref="MigratingScopeInstanceBranch" /> (exclusive). The order of the returned list is top-down, i.e. the
/// highest scope
/// is the first element of the list.
/// </summary>
//JAVA TO C# CONVERTER WARNING: 'final' parameters are not available in .NET:
//ORIGINAL LINE: protected java.Util.List<org.camunda.bpm.engine.impl.Pvm.Process.ScopeImpl> collectNonExistingFlowScopes(org.camunda.bpm.engine.impl.Pvm.Process.ScopeImpl scope, final MigratingScopeInstanceBranch migratingExecutionBranch)
protected internal virtual IList <ScopeImpl> CollectNonExistingFlowScopes(ScopeImpl scope,
MigratingScopeInstanceBranch migratingExecutionBranch)
{
var walker = new FlowScopeWalker(scope);
//JAVA TO C# CONVERTER WARNING: The original Java variable was marked 'final':
//ORIGINAL LINE: final java.Util.List<org.camunda.bpm.engine.impl.Pvm.Process.ScopeImpl> result = new java.Util.LinkedList<org.camunda.bpm.engine.impl.Pvm.Process.ScopeImpl>();
IList <ScopeImpl> result = new List <ScopeImpl>();
walker.AddPreVisitor(new TreeVisitorAnonymousInnerClass(this, result));
//walker.walkWhile(new WalkConditionAnonymousInnerClass(this, migratingExecutionBranch));
return(result);
}
protected internal virtual void MigrateProcessElementInstance(MigratingProcessElementInstance migratingInstance,
MigratingScopeInstanceBranch migratingInstanceBranch)
{
//JAVA TO C# CONVERTER WARNING: The original Java variable was marked 'final':
//ORIGINAL LINE: final MigratingScopeInstance parentMigratingInstance = migratingInstance.Parent;
var parentMigratingInstance = migratingInstance.Parent;
var sourceScope = migratingInstance.SourceScope;
var targetScope = migratingInstance.TargetScope;
var targetFlowScope = targetScope.FlowScope;
var parentActivityInstanceTargetScope = parentMigratingInstance != null
? parentMigratingInstance.TargetScope
: null;
if ((sourceScope != sourceScope.ProcessDefinition) && (targetFlowScope != parentActivityInstanceTargetScope))
{
// create intermediate scopes
// 1. manipulate execution tree
// determine the list of ancestor scopes (parent, grandparent, etc.) for which
// no executions exist yet
var nonExistingScopes = CollectNonExistingFlowScopes(targetFlowScope, migratingInstanceBranch);
// get the closest ancestor scope that is instantiated already
var existingScope = nonExistingScopes.Count == 0 ? targetFlowScope : nonExistingScopes[0].FlowScope;
// and its scope instance
var ancestorScopeInstance = migratingInstanceBranch.GetInstance(existingScope);
// Instantiate the scopes as children of the scope execution
InstantiateScopes(ancestorScopeInstance, migratingInstanceBranch, nonExistingScopes);
var targetFlowScopeInstance = migratingInstanceBranch.GetInstance(targetFlowScope);
// 2. detach instance
// The order of steps 1 and 2 avoids intermediate execution tree compaction
// which in turn could overwrite some dependent instances (e.g. variables)
migratingInstance.DetachState();
// 3. attach to newly created activity instance
migratingInstance.AttachState(targetFlowScopeInstance);
}
// 4. update state (e.g. activity id)
migratingInstance.MigrateState();
// 5. migrate instance state other than execution-tree structure
migratingInstance.MigrateDependentEntities();
}
protected internal override ICollection <MigrationContext> NextElements()
{
ICollection <MigrationContext> nextElements = new LinkedList <MigrationContext>();
var currentElement = CurrentElement;
// continue migration for non-leaf instances (i.e. scopes)
if (currentElement.processElementInstance is MigratingScopeInstance)
{
// Child instances share the same scope instance branch;
// This ensures "once-per-parent" instantiation semantics,
// i.e. if a new parent scope is added to more than one child, all those children
// will share the same new parent instance.
// By changing the way how the branches are created here, it should be possible
// to implement other strategies, e.g. "once-per-child" semantics
var childrenScopeBranch = currentElement.scopeInstanceBranch.Copy();
var childrenCompensationScopeBranch = currentElement.scopeInstanceBranch.Copy();
var scopeInstance = (MigratingScopeInstance)currentElement.processElementInstance;
childrenScopeBranch.Visited(scopeInstance);
childrenCompensationScopeBranch.Visited(scopeInstance);
foreach (var child in scopeInstance.Children)
{
MigratingScopeInstanceBranch instanceBranch = null;
// compensation and non-compensation scopes cannot share the same scope instance branch
// e.g. when adding a sub process, we want to create a new activity instance as well
// as a new event scope instance for that sub process
if (child is MigratingEventScopeInstance || child is MigratingCompensationEventSubscriptionInstance)
{
instanceBranch = childrenCompensationScopeBranch;
}
else
{
instanceBranch = childrenScopeBranch;
}
nextElements.Add(new MigrationContext(child, instanceBranch));
}
}
return(nextElements);
}
protected internal override void InstantiateScopes(MigratingScopeInstance ancestorScopeInstance,
MigratingScopeInstanceBranch executionBranch, IList <ScopeImpl> scopesToInstantiate)
{
if (scopesToInstantiate.Count == 0)
{
return;
}
// must always be an activity instance
var ancestorActivityInstance = (MigratingActivityInstance)ancestorScopeInstance;
var newParentExecution = ancestorActivityInstance.CreateAttachableExecution();
//IDictionary<IPvmActivity, PvmExecutionImpl> createdExecutions =
// newParentExecution.instantiateScopes((IList) scopesToInstantiate, skipCustomListeners, skipIoMappings);
//foreach (var scope in scopesToInstantiate)
//{
// var createdExecution = (ExecutionEntity) createdExecutions[scope];
// createdExecution.setActivity(null);
// createdExecution.Active = false;
// executionBranch.visited(new MigratingActivityInstance(scope, createdExecution));
//}
}
public MigrationContext(MigratingProcessElementInstance processElementInstance,
MigratingScopeInstanceBranch scopeInstanceBranch)
{
this.processElementInstance = processElementInstance;
this.scopeInstanceBranch = scopeInstanceBranch;
}
protected internal abstract void InstantiateScopes(MigratingScopeInstance ancestorScopeInstance,
MigratingScopeInstanceBranch executionBranch, IList <ScopeImpl> scopesToInstantiate);
