public QualifiedTopicRevisionCollection AllReferencesByTopic(UnqualifiedTopicName referencingTopic, ExistencePolicy existencePolicy)
{
if (referencingTopic == null)
{
throw new ArgumentNullException("referencingTopic");
}
TopicRevisionCollection references = ContentProviderChain.GetParsedTopic(new UnqualifiedTopicRevision(referencingTopic.LocalName)).TopicLinks;
// In-scope namespaces include this namespace and every imported namespace.
IList<string> inScopeNamespaces = new List<string>();
inScopeNamespaces.Add(Namespace);
foreach (string importedNamespace in ImportedNamespaces)
{
inScopeNamespaces.Add(importedNamespace);
}
// Since the list that comes back might be read-only, we make a new one.
QualifiedTopicRevisionCollection resolvedReferences = new QualifiedTopicRevisionCollection();
foreach (TopicRevision reference in references)
{
// If the reference has no namespace, consider it to be relative to
// every in-scope namespace
if (reference.Namespace == null)
{
foreach (string inScopeNamespace in inScopeNamespaces)
{
resolvedReferences.Add(reference.ResolveRelativeTo(inScopeNamespace));
}
}
else
{
resolvedReferences.Add(new QualifiedTopicRevision(reference.LocalName, reference.Namespace));
}
}
if (existencePolicy == ExistencePolicy.ExistingOnly)
{
// We can't remove items from a list we're iterating over, so
// we need to make a new list.
QualifiedTopicRevisionCollection filteredReferences = new QualifiedTopicRevisionCollection();
foreach (QualifiedTopicRevision resolvedReference in resolvedReferences)
{
NamespaceManager manager = Federation.NamespaceManagerForNamespace(resolvedReference.Namespace);
if (manager != null)
{
if (manager.Exists)
{
if (manager.TopicExists(resolvedReference.LocalName, ImportPolicy.DoNotIncludeImports))
{
filteredReferences.Add(resolvedReference);
}
}
}
}
resolvedReferences = filteredReferences;
}
return resolvedReferences;
}
private void AssertReferencesCorrect(QualifiedTopicRevisionCollection actualTopics,
params QualifiedTopicRevision[] expectedTopics)
{
Assert.AreEqual(expectedTopics.Length, actualTopics.Count, "Checking that the correct number of topics were returned.");
for (int i = 0; i < actualTopics.Count; i++)
{
Assert.AreEqual(expectedTopics[i], actualTopics[i],
string.Format("Checking that topic {0} was correct", i));
}
}
