public IEnumerable <InstallItem> SortByDependencies(IEnumerable <InstallItem> items, IArasMetadataProvider metadata, int maxLoops = 10)
{
int loops = 0;
var state = CycleState.ResolvedCycle;
var results = items ?? Enumerable.Empty <InstallItem>();
var analyzer = new DependencyAnalyzer(metadata);
while (loops < maxLoops && state == CycleState.ResolvedCycle)
{
if (loops > 0)
{
analyzer.Reset();
}
foreach (var newInstallItem in items)
{
analyzer.AddReferenceAndDependencies(newInstallItem);
}
analyzer.FinishAdding();
results = GetDependencyList(analyzer, items, out state).ToList();
loops++;
}
results = results
.Where(i => !IsDelete(i))
.Concat(results
.Where(IsDelete)
.OrderByDescending(DefaultInstallOrder)
).ToArray();
return(results);
}
/// <summary>
/// Construct a new <see cref="ExportProcessor"/> from a connection to Aras
/// </summary>
/// <param name="conn"></param>
public ExportProcessor(IAsyncConnection conn)
{
_conn = conn;
_metadata = ArasMetadataProvider.Cached(conn);
_metadata.Reset();
_dependAnalyzer = new DependencyAnalyzer(_metadata);
}
internal IEnumerable <InstallItem> GetDependencyList(DependencyAnalyzer dependAnalyzer
, IEnumerable <InstallItem> values, out CycleState cycleState)
{
cycleState = CycleState.NoCycle;
var lookup = (from i in values
group i by i.Reference into refGroup
select refGroup)
.ToDictionary(i => i.Key, i => (IEnumerable <InstallItem>)i);
IEnumerable <ItemReference> sorted = null;
IList <ItemReference> cycle = new List <ItemReference>()
{
null
};
List <XmlNode> refs;
// Bias the install order initially to try and help the dependency sort properly handle anything
// where explicit dependencies don't exist. Then, perform the dependency sort.
var initialSort = lookup.Keys
.OrderBy(DefaultInstallOrder)
.ThenBy(i => i.Type.ToLowerInvariant())
.ThenBy(i => i.Unique)
.ToList();
sorted = initialSort.DependencySort <ItemReference>(d =>
{
IEnumerable <InstallItem> res = null;
if (lookup.TryGetValue(d, out res))
{
return(res.SelectMany(r =>
{
var ii = r as InstallItem;
if (ii == null)
{
return Enumerable.Empty <ItemReference>();
}
return dependAnalyzer.GetDependencies(ii.Reference);
}));
}
return(Enumerable.Empty <ItemReference>());
}, ref cycle, false);
// Attempt to remove cycles by identifying a Relationships tag in one of the cycles
// and moving the Relationships to the top level
if (cycle.Count > 0 && (cycle[0] != null || cycle.Count > 1))
{
cycleState = CycleState.UnresolvedCycle;
for (int i = (cycle[0] == null ? 2 : 1); i < cycle.Count; i++)
{
refs = dependAnalyzer.GetReferences(cycle[i - 1], cycle[i]).ToList();
if (refs.Count == 1)
{
var relTag = refs[0].Parents().FirstOrDefault(e => e.LocalName == "Relationships");
if (relTag != null)
{
var parentTag = refs[0].Parents().Last(e => e.LocalName == "Item").Parent();
foreach (var child in relTag.Elements().ToList())
{
child.Detach();
parentTag.AppendChild(child);
var sourceId = (XmlElement)child.AppendChild(child.OwnerDocument.CreateElement("source_id"));
sourceId.SetAttribute("type", relTag.Parent().Attribute("type"));
sourceId.SetAttribute("keyed_name", relTag.Parent().Attribute("_keyed_name"));
sourceId.InnerText = relTag.Parent().Attribute("id");
}
relTag.Detach();
cycleState = CycleState.ResolvedCycle;
//return Enumerable.Empty<InstallItem>();
}
}
}
}
var result = new List <InstallItem>();
IEnumerable <InstallItem> items = null;
foreach (var sort in sorted)
{
if (lookup.TryGetValue(sort, out items))
{
foreach (var item in items)
{
result.Add(item);
}
}
else
{
result.Add(InstallItem.FromDependency(sort));
}
}
return(result);
}
public static IEnumerable<InstallItem> SortByDependencies(IEnumerable<InstallItem> items, IAsyncConnection conn)
{
int loops = 0;
var state = CycleState.ResolvedCycle;
var results = items;
var metadata = ArasMetadataProvider.Cached(conn);
metadata.Wait();
var analyzer = new DependencyAnalyzer(metadata);
while (loops < 10 && state == CycleState.ResolvedCycle)
{
foreach (var newInstallItem in items)
{
analyzer.GatherDependencies(newInstallItem.Script, newInstallItem.Reference, newInstallItem.CoreDependencies);
}
analyzer.CleanDependencies();
results = GetDependencyList(analyzer, items, out state).ToList();
loops++;
}
return results;
}
private static IEnumerable<InstallItem> GetDependencyList(DependencyAnalyzer dependAnalyzer
, IEnumerable<InstallItem> values, out CycleState cycleState)
{
cycleState = CycleState.NoCycle;
var lookup = (from i in values
group i by i.Reference into refGroup
select refGroup)
.ToDictionary(i => i.Key, i => (IEnumerable<InstallItem>)i);
IEnumerable<ItemReference> sorted = null;
IList<ItemReference> cycle = new List<ItemReference>() { null };
List<XmlNode> refs;
sorted = lookup.Keys.DependencySort<ItemReference>(d =>
{
IEnumerable<InstallItem> res = null;
if (lookup.TryGetValue(d, out res)) return res.SelectMany(r =>
{
var ii = r as InstallItem;
if (ii == null) return Enumerable.Empty<ItemReference>();
return dependAnalyzer.GetDependencies(ii.Reference);
});
return Enumerable.Empty<ItemReference>();
}, ref cycle, false);
// Attempt to remove cycles by identifying a Relationships tag in one of the cycles
// and moving the Relationships to the top level
if (cycle.Count > 0 && (cycle[0] != null || cycle.Count > 1))
{
cycleState = CycleState.UnresolvedCycle;
for (int i = (cycle[0] == null ? 2 : 1); i < cycle.Count; i++)
{
refs = dependAnalyzer.GetReferences(cycle[i - 1], cycle[i]).ToList();
if (refs.Count == 1)
{
var relTag = refs[0].Parents().FirstOrDefault(e => e.LocalName == "Relationships");
if (relTag != null)
{
var parentTag = refs[0].Parents().Last(e => e.LocalName == "Item").Parent();
foreach (var child in relTag.Elements().ToList())
{
child.Detatch();
parentTag.AppendChild(child);
var sourceId = (XmlElement)child.AppendChild(child.OwnerDocument.CreateElement("source_id"));
sourceId.SetAttribute("type", relTag.Parent().Attribute("type"));
sourceId.SetAttribute("keyed_name", relTag.Parent().Attribute("_keyed_name"));
sourceId.InnerText = relTag.Parent().Attribute("id");
}
relTag.Detatch();
cycleState = CycleState.ResolvedCycle;
return Enumerable.Empty<InstallItem>();
}
}
}
}
var result = new List<InstallItem>();
IEnumerable<InstallItem> items = null;
foreach (var sort in sorted)
{
if (lookup.TryGetValue(sort, out items))
{
foreach (var item in items)
result.Add(item);
}
else
{
result.Add(InstallItem.FromDependency(sort));
}
}
return result;
}