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();
}
public MigrationContext(MigratingProcessElementInstance processElementInstance,
MigratingScopeInstanceBranch scopeInstanceBranch)
{
this.processElementInstance = processElementInstance;
this.scopeInstanceBranch = scopeInstanceBranch;
}
protected internal override bool CanMigrate(MigratingProcessElementInstance instance)
{
return(instance is MigratingEventScopeInstance || instance is MigratingCompensationEventSubscriptionInstance);
}
protected internal override bool CanMigrate(MigratingProcessElementInstance instance)
{
return(instance is MigratingActivityInstance || instance is MigratingTransitionInstance);
}
protected internal abstract bool CanMigrate(MigratingProcessElementInstance instance);
