/// <summary>
/// Runs the enumerable list of rules.
/// </summary>
/// <param name="rules">The rules.</param>
/// <param name="cascade">if set to <c>true</c> cascade.</param>
/// <param name="executionContext">The execution context.</param>
/// <returns></returns>
private RunRulesResult RunRules(IEnumerable <IBusinessRule> rules, bool cascade, RuleContextModes executionContext)
{
var affectedProperties = new List <string>();
var dirtyProperties = new List <string>();
bool anyRuleBroken = false;
foreach (var rule in rules)
{
// implicit short-circuiting
if (anyRuleBroken && rule.Priority > ProcessThroughPriority)
{
break;
}
bool complete = false;
// set up context
var context = new RuleContext((r) =>
{
if (r.Rule.IsAsync)
{
lock (SyncRoot)
{
// update output values
if (r.OutputPropertyValues != null)
{
foreach (var item in r.OutputPropertyValues)
{
// value is changed add to dirtyValues
if (((IManageProperties)_target).LoadPropertyMarkDirty(item.Key, item.Value))
{
r.AddDirtyProperty(item.Key);
}
}
}
// update broken rules list
BrokenRules.SetBrokenRules(r.Results, r.OriginPropertyName);
// run rules on affected properties for this async rule
var affected = new List <string>();
if (cascade)
{
foreach (var item in r.Rule.AffectedProperties.Distinct())
{
if (!ReferenceEquals(r.Rule.PrimaryProperty, item))
{
var doCascade = false;
if (CascadeOnDirtyProperties && (r.DirtyProperties != null))
{
doCascade = r.DirtyProperties.Any(p => p.Name == item.Name);
}
affected.AddRange(CheckRulesForProperty(item, doCascade, r.ExecuteContext | RuleContextModes.AsAffectedPoperty));
}
}
}
// mark each property as not busy
foreach (var item in r.Rule.AffectedProperties)
{
BusyProperties.Remove(item);
_isBusy = BusyProperties.Count > 0;
if (!BusyProperties.Contains(item))
{
_target.RuleComplete(item);
}
}
foreach (var property in affected.Distinct())
{
// property is not in AffectedProperties (already signalled to UI)
if (!r.Rule.AffectedProperties.Any(p => p.Name == property))
{
_target.RuleComplete(property);
}
}
if (!RunningRules && !RunningAsyncRules)
{
_target.AllRulesComplete();
}
}
}
else // Rule is Sync
{
// update output values
if (r.OutputPropertyValues != null)
{
foreach (var item in r.OutputPropertyValues)
{
// value is changed add to dirtyValues
if (((IManageProperties)_target).LoadPropertyMarkDirty(item.Key, item.Value))
{
r.AddDirtyProperty(item.Key);
}
}
}
// update broken rules list
if (r.Results != null)
{
BrokenRules.SetBrokenRules(r.Results, r.OriginPropertyName);
// is any rules here broken with severity Error
if (r.Results.Any(p => !p.Success && p.Severity == RuleSeverity.Error))
{
anyRuleBroken = true;
}
}
complete = true;
}
});
context.Rule = rule;
if (rule.PrimaryProperty != null)
{
context.OriginPropertyName = rule.PrimaryProperty.Name;
}
context.ExecuteContext = executionContext;
if (!rule.IsAsync || rule.ProvideTargetWhenAsync)
{
context.Target = _target;
}
// get input properties
if (rule.InputProperties != null)
{
var target = (Core.IManageProperties)_target;
context.InputPropertyValues = new Dictionary <IPropertyInfo, object>();
foreach (var item in rule.InputProperties)
{
// do not add lazy loaded fields that have no field data.
if ((item.RelationshipType & RelationshipTypes.LazyLoad) == RelationshipTypes.LazyLoad)
{
if (target.FieldExists(item))
{
context.InputPropertyValues.Add(item, target.ReadProperty(item));
}
}
else
{
context.InputPropertyValues.Add(item, target.ReadProperty(item));
}
}
}
// mark properties busy
if (rule.IsAsync)
{
lock (SyncRoot)
{
// mark each property as busy
foreach (var item in rule.AffectedProperties)
{
var alreadyBusy = BusyProperties.Contains(item);
BusyProperties.Add(item);
_isBusy = true;
if (!alreadyBusy)
{
_target.RuleStart(item);
}
}
}
}
// execute (or start executing) rule
try
{
rule.Execute(context);
}
catch (Exception ex)
{
context.AddErrorResult(string.Format("{0}:{1}", rule.RuleName, ex.Message));
if (rule.IsAsync)
{
context.Complete();
}
}
if (!rule.IsAsync)
{
// process results
if (!complete)
{
context.Complete();
}
// copy affected property names
affectedProperties.AddRange(rule.AffectedProperties.Select(c => c.Name));
// copy output property names
if (context.OutputPropertyValues != null)
{
affectedProperties.AddRange(context.OutputPropertyValues.Select(c => c.Key.Name));
}
// copy dirty properties
if (context.DirtyProperties != null)
{
dirtyProperties.AddRange(context.DirtyProperties.Select(c => c.Name));
}
if (context.Results != null)
{
// explicit short-circuiting
if (context.Results.Any(r => r.StopProcessing))
{
break;
}
}
}
}
// return any synchronous results
return(new RunRulesResult(affectedProperties, dirtyProperties));
}