private MockTopic GetTopic(string topicName, ExistencePolicy existencePolicy)
{
if (!_topics.Contains(topicName))
{
return null;
}
MockTopic topic = _topics[topicName];
if (topic.IsDeleted && existencePolicy == ExistencePolicy.ExistingOnly)
{
return null;
}
return topic;
}
private IEnumerable<MockTopic> AllTopics(ExistencePolicy existencePolicy)
{
foreach (MockTopic topic in _topics)
{
if (existencePolicy == ExistencePolicy.All || topic.IsDeleted == false)
{
yield return topic;
}
}
}
private MockTopic GetTopic(UnqualifiedTopicName topicName, ExistencePolicy existencePolicy)
{
return GetTopic(topicName.LocalName, existencePolicy);
}
/// <summary>
/// Returns a list of all references from all topics in this namespace.
/// </summary>
/// <param name="includeImports">Indicates whether topics should be filtered only
/// to those that actually exist.</param>
/// <returns>A map of topic names to the list of topics they reference.</returns>
public ReferenceMap GetReferenceMap(ExistencePolicy existencePolicy)
{
ReferenceMap map = new ReferenceMap();
foreach (TopicName topicName in AllTopics(ImportPolicy.DoNotIncludeImports))
{
map[topicName.LocalName] = AllReferencesByTopic(topicName.LocalName, existencePolicy);
}
return map;
}
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;
}
/// <summary>
/// Answer a hash: keys are topic; values are an array of topic names for referenced topic (in this namespace)
/// </summary>
/// <param name="referencing">Specific topic for which reference information is desired</param>
/// <param name="existencePolicy">Specifies whether to only return the referenced topics that actually exist</param>
/// <returns>A list of topics referenced by the specified topic.</returns>
public QualifiedTopicRevisionCollection AllReferencesByTopic(string referencingTopic, ExistencePolicy existencePolicy)
{
return AllReferencesByTopic(new UnqualifiedTopicName(referencingTopic), existencePolicy);
}
/// <summary>
/// Returns a list of all references from all topics in this namespace.
/// </summary>
/// <param name="includeImports">Indicates whether topics should be filtered only
/// to those that actually exist.</param>
/// <returns>A map of topic names to the list of topics they reference.</returns>
public ReferenceMap GetReferenceMap(ExistencePolicy existencePolicy)
{
ReferenceMap map = new ReferenceMap();
foreach (QualifiedTopicName topicName in AllTopics(ImportPolicy.DoNotIncludeImports))
{
// We don't try to map topics that don't grant read permission - we're not
// going to be able to parse them anyway.
if (HasPermission(new UnqualifiedTopicName(topicName.LocalName), TopicPermission.Read))
{
map[topicName.LocalName] = AllReferencesByTopic(topicName.LocalName, existencePolicy);
}
}
return map;
}
private IEnumerable<MockTopic> AllTopics(ExistencePolicy existencePolicy)
{
MockTopicCollection topics = new MockTopicCollection();
foreach (MockTopic topic in _topics)
{
if (existencePolicy == ExistencePolicy.All || topic.IsDeleted == false)
{
topics.Add(topic);
}
}
return topics;
}
