//public IList<WorkflowChangeAction> Diff(object originalDefinition, object changedDefinition)
//{
// RuleDefinitions originalRules = originalDefinition as RuleDefinitions;
// RuleDefinitions changedRules = changedDefinition as RuleDefinitions;
// if ((originalRules == null) || (changedRules == null))
// return new List<WorkflowChangeAction>();
// IList<WorkflowChangeAction> cdiff = Conditions.Diff(originalRules.Conditions, changedRules.Conditions);
// IList<WorkflowChangeAction> rdiff = RuleSets.Diff(originalRules.RuleSets, changedRules.RuleSets);
// // quick optimization -- if no condition changes, simply return the ruleset changes
// if (cdiff.Count == 0)
// return rdiff;
// // merge ruleset changes into condition changes
// for (int i = 0; i < rdiff.Count; ++i)
// {
// cdiff.Add(rdiff[i]);
// }
// return cdiff;
//}
#endregion
internal RuleDefinitions Clone()
{
RuleDefinitions newRuleDefinitions = new RuleDefinitions();
if (this.ruleSets != null)
{
newRuleDefinitions.ruleSets = new RuleSetCollection();
foreach (RuleSet r in this.ruleSets)
{
newRuleDefinitions.ruleSets.Add(r.Clone());
}
}
if (this.conditions != null)
{
newRuleDefinitions.conditions = new RuleConditionCollection();
foreach (RuleCondition r in this.conditions)
{
newRuleDefinitions.conditions.Add(r.Clone());
}
}
return(newRuleDefinitions);
}
internal static RuleDefinitions GetRuleDefinitionsFromManifest(Type workflowType)
{
if (workflowType == null)
{
throw new ArgumentNullException("workflowType");
}
RuleDefinitions rules = null;
if (cloneableOrNullRulesResources.ContainsKey(workflowType))
{
rules = (RuleDefinitions)cloneableOrNullRulesResources[workflowType];
if (rules != null)
{
// This should always succeed, since it is coming out of the cloneable cache
rules = rules.Clone();
}
}
else
{
string resourceName = workflowType.Name + ".rules";
Stream stream = workflowType.Module.Assembly.GetManifestResourceStream(workflowType, resourceName);
// Try just the .rules file name. This is needed for wfc.exe compilation scenarios.
if (stream == null)
{
stream = workflowType.Module.Assembly.GetManifestResourceStream(resourceName);
}
if (stream != null)
{
using (StreamReader reader = new StreamReader(stream))
{
using (XmlReader xmlReader = XmlReader.Create(reader))
rules = new WorkflowMarkupSerializer().Deserialize(xmlReader) as RuleDefinitions;
}
}
// Don't know yet whether 'rules' is cloneable, give it a try
if (!uncloneableRulesResources.ContainsKey(workflowType))
{
try
{
RuleDefinitions originalRules = rules;
if (rules != null)
{
rules = rules.Clone();
}
lock (cloneableOrNullRulesResources)
{
cloneableOrNullRulesResources[workflowType] = originalRules;
}
}
catch (Exception)
{
lock (uncloneableRulesResources)
{
uncloneableRulesResources[workflowType] = null;
}
}
}
}
return(rules);
}