/// <summary>
/// Parse all SNOMED realtionships and create applicadia attributes for each one.
/// </summary>
void CreateRelationships()
{
// We cant resize SnomedQueryConcept[]'s efficiently, so map all the parent and
// children to lists and set the objects IsAXXX to the list.ToArray() when
// we have collated all concepts.
ConcurrentDictionary <Int64, List <SnomedQueryConcept> > parentMap =
new ConcurrentDictionary <long, List <SnomedQueryConcept> >();
ConcurrentDictionary <Int64, List <SnomedQueryConcept> > childMap =
new ConcurrentDictionary <long, List <SnomedQueryConcept> >();
foreach (KeyValuePair <Int64, RF2RelationshipGroup> kvp in this.rf2Parser.RelationshipGroups)
{
RF2RelationshipGroup rf2RelationshipGroup = kvp.Value;
this.CreateRelationship(rf2RelationshipGroup, parentMap, childMap);
}
// Copy all parent lists to parent array in each concept.
foreach (KeyValuePair <Int64, List <SnomedQueryConcept> > kvp in parentMap)
{
SnomedQueryConcept item = this.FindConcept(kvp.Key);
item.IsAParents = kvp.Value.ToArray();
}
// Copy all child lists to child array in each concept.
foreach (KeyValuePair <Int64, List <SnomedQueryConcept> > kvp in childMap)
{
SnomedQueryConcept item = this.FindConcept(kvp.Key);
item.IsAChildren = kvp.Value.ToArray();
}
}
/// <summary>
/// Add a destination relationship to concept group.
/// </summary>
/// <param name="relationshipGroup">Relationship in which this instance is the destination</param>
public void AddDestinationRelationship(RF2RelationshipGroup relationshipGroup)
{
if (this.destinationRelationshipIds.Contains(relationshipGroup.Id) == true)
{
return;
}
this.destinationRelationshipIds.Add(relationshipGroup.Id);
// force lazy reloading of source relationship groups id called.
this.destinationRelationshipGroups = null;
}
/// <summary>
/// Pathc relationships.
/// This must be run after concepts are read in.
/// </summary>
/// <param name="path"></param>
void FixRelationships()
{
foreach (KeyValuePair <Int64, RF2RelationshipGroup> kvp in this.RelationshipGroups)
{
RF2RelationshipGroup relationshipGroup = kvp.Value;
RF2Relationship relationship = relationshipGroup.Active;
if (relationship != null)
{
RF2ConceptGroup sourceConcept = this.GetConceptGroup(relationship.SourceId);
RF2ConceptGroup destinationConcept = this.GetConceptGroup(relationship.DestinationId);
sourceConcept.AddSourceRelationship(relationshipGroup);
destinationConcept.AddDestinationRelationship(relationshipGroup);
}
}
}
/// <summary>
/// Parse all SNOMED realtionships and create applicadia attributes for each one.
/// </summary>
void CreateRelationship(RF2RelationshipGroup rf2RelationshipGroup,
ConcurrentDictionary <Int64, List <SnomedQueryConcept> > parentMap,
ConcurrentDictionary <Int64, List <SnomedQueryConcept> > childMap)
{
RF2Relationship rf2Relationship = rf2RelationshipGroup.Active;
if (rf2Relationship == null)
{
return;
}
switch (rf2Relationship.TypeId)
{
case RF2Parser.IsAConceptId:
SnomedQueryConcept source = this.FindConcept(rf2Relationship.Source.Id);
SnomedQueryConcept dest = this.FindConcept(rf2Relationship.Destination.Id);
this.Add(parentMap, source, dest);
this.Add(childMap, dest, source);
break;
}
}
/// <summary>
/// Load raw snomed description data into memory.
/// </summary>
/// <param name="path"></param>
void LoadRelationships(String path)
{
StreamReader reader = new StreamReader(File.OpenRead(path));
String[] parts = reader.ReadLine().Split('\t');
if (
(parts.Length != 10) ||
(String.Compare(parts[0], "id") != 0) ||
(String.Compare(parts[1], "effectiveTime") != 0) ||
(String.Compare(parts[2], "active") != 0) ||
(String.Compare(parts[3], "moduleId") != 0) ||
(String.Compare(parts[4], "sourceId") != 0) ||
(String.Compare(parts[5], "destinationId") != 0) ||
(String.Compare(parts[6], "relationshipGroup") != 0) ||
(String.Compare(parts[7], "typeId") != 0) ||
(String.Compare(parts[8], "characteristicTypeId") != 0) ||
(String.Compare(parts[9], "modifierId") != 0)
)
{
throw new ApplicationException("Invalid header line to Relationship file");
}
RF2RelationshipGroup relationshipGroup = null;
while (true)
{
String line = reader.ReadLine();
if (line == null)
{
break;
}
RF2Relationship relationship = RF2Relationship.Parse(this, line);
if (relationship != null)
{
/*
* Relationships in a common group are usually grouped together, so check
* last relationship to see if it is same group first.
*/
if ((relationshipGroup != null) && (relationshipGroup.Id != relationship.Id))
{
relationshipGroup = null;
}
if (
(relationshipGroup == null) &&
(this.RelationshipGroups.TryGetValue(relationship.Id, out relationshipGroup) == false)
)
{
relationshipGroup = null;
}
if (relationshipGroup == null)
{
relationshipGroup = new RF2RelationshipGroup()
{
Parser = this,
Id = relationship.Id
};
if (this.RelationshipGroups.TryAdd(relationship.Id, relationshipGroup) == false)
{
throw new ApplicationException("Error adding relationship to dictionary");
}
}
relationshipGroup.AddRelationship(relationship);
}
}
}