/// <summary>
/// Add search parameters
/// </summary>
public static void AddSearchParam <TFhirResource>(String fhirQueryParameter, String hdsiQueryParmeter, QueryParameterRewriteType type)
{
var resourceType = typeof(TFhirResource).GetResourceType();
var mapConfig = s_map.Map.FirstOrDefault(o => resourceType.HasValue ? resourceType.Value == o.Resource : !o.ResourceSpecified);
if (mapConfig == null)
{
mapConfig = new QueryParameterType()
{
Resource = resourceType.Value, ResourceSpecified = resourceType.HasValue
};
s_map.Map.Add(mapConfig);
}
// parm config
var parmConfig = mapConfig.Map.FirstOrDefault(o => o.FhirQuery == fhirQueryParameter);
if (parmConfig == null)
{
parmConfig = new QueryParameterMapProperty()
{
FhirQuery = fhirQueryParameter,
ModelQuery = hdsiQueryParmeter,
FhirType = type
};
}
else
{
parmConfig.ModelQuery = hdsiQueryParmeter;
parmConfig.FhirType = type;
}
mapConfig.Map.Add(parmConfig);
}
/// <summary>
/// Re-writes the FHIR query parameter to HDSI query parameter format
/// </summary>
/// <returns></returns>
public static FhirQuery RewriteFhirQuery <TFhirResource, TModelType>(System.Collections.Specialized.NameValueCollection fhirQuery, out NameValueCollection hdsiQuery)
{
// Try parse
if (fhirQuery == null)
{
throw new ArgumentNullException(nameof(fhirQuery));
}
// Count and offset parameters
int count = 0, offset = 0, page = 0;
if (!Int32.TryParse(fhirQuery["_count"] ?? "100", out count))
{
throw new ArgumentException("_count");
}
if (!Int32.TryParse(fhirQuery["_offset"] ?? "0", out offset))
{
throw new ArgumentException("_offset");
}
if (fhirQuery["_page"] != null && Int32.TryParse(fhirQuery["_page"], out page))
{
offset = page * count;
}
Guid queryId = Guid.Empty;
if (fhirQuery["_stateid"] != null)
{
queryId = Guid.Parse(fhirQuery["_stateid"]);
}
else
{
queryId = Guid.NewGuid();
}
// Return new query
FhirQuery retVal = new FhirQuery()
{
ActualParameters = new System.Collections.Specialized.NameValueCollection(),
Quantity = count,
Start = offset,
MinimumDegreeMatch = 100,
QueryId = queryId,
IncludeHistory = false,
IncludeContained = false
};
hdsiQuery = new NameValueCollection();
var map = s_map.Map.FirstOrDefault(o => o.SourceType == typeof(TFhirResource));
foreach (var kv in fhirQuery.AllKeys)
{
List <String> value = new List <string>(fhirQuery.GetValues(kv).Length);
var parmComponents = kv.Split(':');
// Is the name extension?
var parmMap = map?.Map.FirstOrDefault(o => o.FhirName == parmComponents[0]);
if (parmMap == null)
{
parmMap = s_default.Map.FirstOrDefault(o => o.FhirName == parmComponents[0]);
}
if (parmMap == null && kv == "extension")
{
parmMap = new QueryParameterMapProperty()
{
FhirName = "extension",
ModelName = "extension",
FhirType = "tag"
}
}
;
else if (parmMap == null)
{
continue;
}
// Valuse
foreach (var v in fhirQuery.GetValues(kv))
{
if (String.IsNullOrEmpty(v))
{
continue;
}
// Operands
bool chop = false;
string opValue = String.Empty;
string filterValue = v;
if (v.Length > 2)
{
switch (v.Substring(0, 2))
{
case "ap":
chop = true;
opValue = "~";
break;
case "gt":
chop = true;
opValue = ">";
break;
case "ge":
chop = true;
opValue = ">=";
break;
case "lt":
chop = true;
opValue = "<";
break;
case "le":
chop = true;
opValue = "<=";
break;
case "ne":
chop = true;
opValue = "!";
break;
case "eq":
chop = true;
break;
default:
break;
}
}
if (parmComponents.Length > 1)
{
switch (parmComponents[1])
{
case "contains":
opValue = "~";
filterValue = $"*{filterValue}*";
break;
case "missing":
filterValue = "null";
chop = false;
break;
}
}
retVal.ActualParameters.Add(kv, filterValue);
value.Add(opValue + filterValue.Substring(chop ? 2 : 0));
}
if (value.Count(o => !String.IsNullOrEmpty(o)) == 0)
{
continue;
}
// Query
switch (parmMap.FhirType)
{
case "identifier":
foreach (var itm in value)
{
if (itm.Contains("|"))
{
var segs = itm.Split('|');
// Might be a URL
if (Uri.TryCreate(segs[0], UriKind.Absolute, out Uri data))
{
var aa = ApplicationServiceContext.Current.GetService <IAssigningAuthorityRepositoryService>().Get(data);
hdsiQuery.Add(String.Format("{0}[{1}].value", parmMap.ModelName, aa.DomainName), segs[1]);
}
else
{
hdsiQuery.Add(String.Format("{0}[{1}].value", parmMap.ModelName, segs[0]), segs[1]);
}
}
else
{
hdsiQuery.Add(parmMap.ModelName + ".value", itm);
}
}
break;
case "concept":
foreach (var itm in value)
{
if (itm.Contains("|"))
{
var segs = itm.Split('|');
string codeSystemUri = segs[0];
CodeSystem codeSystem = null;
if (codeSystemUri.StartsWith("urn:oid:"))
{
codeSystemUri = codeSystemUri.Substring(8);
codeSystem = ApplicationServiceContext.Current.GetService <IRepositoryService <CodeSystem> >().Find(o => o.Oid == codeSystemUri).FirstOrDefault();
}
else if (codeSystemUri.StartsWith("urn:") || codeSystemUri.StartsWith("http:"))
{
codeSystem = ApplicationServiceContext.Current.GetService <IRepositoryService <CodeSystem> >().Find(o => o.Url == codeSystemUri).FirstOrDefault();
}
else
{
codeSystem = ApplicationServiceContext.Current.GetService <IRepositoryService <CodeSystem> >().Find(o => o.Name == codeSystemUri).FirstOrDefault();
}
s_tracer.TraceInfo("Have translated FHIR domain {0} to {1}", codeSystemUri, codeSystem?.Name);
if (codeSystem != null)
{
hdsiQuery.Add(String.Format("{0}.referenceTerm[{1}].term.mnemonic", parmMap.ModelName, codeSystem.Name), segs[1]);
}
else
{
hdsiQuery.Add(String.Format("{0}.mnemonic", parmMap.ModelName), segs[1]);
}
}
else
{
hdsiQuery.Add(parmMap.ModelName + ".referenceTerm.term.mnemonic", itm);
}
}
break;
case "reference":
foreach (var itm in value)
{
if (itm.Contains("/"))
{
var segs = itm.Split('/');
hdsiQuery.Add(parmMap.ModelName, segs[1]);
}
else
{
hdsiQuery.Add(parmMap.ModelName, itm);
}
}
break;
case "tag":
foreach (var itm in value)
{
if (itm.Contains("|"))
{
var segs = itm.Split('|');
hdsiQuery.Add(String.Format("{0}[{1}].value", parmMap.ModelName, segs[0]), segs[1]);
}
else
{
hdsiQuery.Add(parmMap.ModelName, itm);
}
}
break;
default:
hdsiQuery.Add(parmMap.ModelName, value);
break;
}
}
return(retVal);
}
/// <summary>
/// Re-writes the FHIR query parameter to HDSI query parameter format
/// </summary>
/// <returns></returns>
public static FhirQuery RewriteFhirQuery(Type fhirType, Type modelType, System.Collections.Specialized.NameValueCollection fhirQuery, out NameValueCollection hdsiQuery)
{
// Try parse
if (fhirQuery == null)
{
throw new ArgumentNullException(nameof(fhirQuery));
}
// Count and offset parameters
int count = 0, offset = 0, page = 0;
if (!Int32.TryParse(fhirQuery["_count"] ?? "25", out count))
{
throw new ArgumentException("_count");
}
if (!Int32.TryParse(fhirQuery["_offset"] ?? "0", out offset))
{
throw new ArgumentException("_offset");
}
if (fhirQuery["_page"] != null && Int32.TryParse(fhirQuery["_page"], out page))
{
offset = page * count;
}
Guid queryId = Guid.Empty;
if (fhirQuery["_stateid"] != null)
{
queryId = Guid.Parse(fhirQuery["_stateid"]);
}
else if (fhirQuery["_total"] == "accurate") // to get an accurate total we have to persist query state
{
queryId = Guid.NewGuid();
}
else
{
queryId = Guid.Empty;
}
// Return new query
FhirQuery retVal = new FhirQuery()
{
ActualParameters = new System.Collections.Specialized.NameValueCollection(),
Quantity = count,
Start = offset,
MinimumDegreeMatch = 100,
QueryId = queryId,
IncludeHistory = false,
IncludeContained = false
};
hdsiQuery = new NameValueCollection();
var resourceType = fhirType.GetResourceType();
var map = s_map.Map.FirstOrDefault(o => resourceType.HasValue ? resourceType.Value == o.Resource : !o.ResourceSpecified);
foreach (var kv in fhirQuery.AllKeys)
{
List <String> value = new List <string>(fhirQuery.GetValues(kv).Length);
var parmComponents = kv.Split(':');
// Is the name extension?
var parmMap = map?.Map.FirstOrDefault(o => o.FhirQuery == parmComponents[0]);
if (parmMap == null)
{
parmMap = s_default.Map.FirstOrDefault(o => o.FhirQuery == parmComponents[0]);
}
if (parmMap == null && kv == "extension")
{
parmMap = new QueryParameterMapProperty()
{
FhirQuery = "extension",
ModelQuery = "extension",
FhirType = QueryParameterRewriteType.Tag
}
}
;
else if (parmMap == null)
{
continue;
}
// Valuse
foreach (var v in fhirQuery.GetValues(kv))
{
if (String.IsNullOrEmpty(v))
{
continue;
}
// Operands
bool chop = false;
string opValue = String.Empty;
string filterValue = v;
if (v.Length > 2)
{
switch (v.Substring(0, 2))
{
case "ap":
chop = true;
opValue = "~";
break;
case "gt":
chop = true;
opValue = ">";
break;
case "ge":
chop = true;
opValue = ">=";
break;
case "lt":
chop = true;
opValue = "<";
break;
case "le":
chop = true;
opValue = "<=";
break;
case "ne":
chop = true;
opValue = "!";
break;
case "eq":
chop = true;
break;
default:
break;
}
}
if (parmComponents.Length > 1)
{
switch (parmComponents[1])
{
case "fuzzy":
case "approx":
opValue = "";
filterValue = $":(approx|'{filterValue}')";
break;
case "contains":
opValue = "~";
filterValue = $"*{filterValue}*";
break;
case "exact":
opValue = "";
break;
case "missing":
filterValue = "null";
chop = false;
break;
default:
switch (parmMap.FhirType)
{
case QueryParameterRewriteType.String: // Default string matching is wonky in FHIR but meh we can mimic it at least
opValue = "~";
filterValue = $"*{filterValue.Replace(' ', '?')}*";
break;
}
break;
}
}
retVal.ActualParameters.Add(kv, filterValue);
value.Add(opValue + filterValue.Substring(chop ? 2 : 0));
}
if (value.Count(o => !String.IsNullOrEmpty(o)) == 0)
{
continue;
}
// Apply a function
if (!String.IsNullOrEmpty(parmMap.Function))
{
value = value.Select(o => parmMap.Function.Replace("$1", o)).ToList();
}
// Query
switch (parmMap.FhirType)
{
case QueryParameterRewriteType.Identifier:
foreach (var itm in value)
{
if (itm.Contains("|"))
{
var segs = itm.Split('|');
// Might be a URL
if (Uri.TryCreate(segs[0], UriKind.Absolute, out Uri data))
{
var aa = ApplicationServiceContext.Current.GetService <IAssigningAuthorityRepositoryService>().Get(data);
if (aa == null)
{
throw new FhirException(System.Net.HttpStatusCode.BadRequest, OperationOutcome.IssueType.NotFound, $"No authority for {data} found");
}
hdsiQuery.Add(String.Format("{0}[{1}].value", parmMap.ModelQuery, aa.DomainName), segs[1]);
}
else
{
hdsiQuery.Add(String.Format("{0}[{1}].value", parmMap.ModelQuery, segs[0]), segs[1]);
}
}
else
{
hdsiQuery.Add(parmMap.ModelQuery + ".value", itm);
}
}
break;
case QueryParameterRewriteType.Indicator:
var mq = NameValueCollection.ParseQueryString(parmMap.ModelQuery);
foreach (var itm in mq)
{
hdsiQuery.Add(itm.Key, itm.Value);
}
break;
case QueryParameterRewriteType.Concept:
foreach (var itm in value)
{
if (itm.Contains("|"))
{
var segs = itm.Split('|');
string codeSystemUri = segs[0];
Core.Model.DataTypes.CodeSystem codeSystem = null;
if (codeSystemUri.StartsWith("urn:oid:"))
{
codeSystemUri = codeSystemUri.Substring(8);
codeSystem = ApplicationServiceContext.Current.GetService <IRepositoryService <Core.Model.DataTypes.CodeSystem> >().Find(o => o.Oid == codeSystemUri).FirstOrDefault();
}
else if (codeSystemUri.StartsWith("urn:") || codeSystemUri.StartsWith("http:"))
{
codeSystem = ApplicationServiceContext.Current.GetService <IRepositoryService <Core.Model.DataTypes.CodeSystem> >().Find(o => o.Url == codeSystemUri).FirstOrDefault();
}
else
{
codeSystem = ApplicationServiceContext.Current.GetService <IRepositoryService <Core.Model.DataTypes.CodeSystem> >().Find(o => o.Name == codeSystemUri).FirstOrDefault();
}
s_tracer.TraceInfo("Have translated FHIR domain {0} to {1}", codeSystemUri, codeSystem?.Name);
if (codeSystem != null)
{
hdsiQuery.Add(String.Format("{0}.referenceTerm[{1}].term.mnemonic", parmMap.ModelQuery, codeSystem.Name), segs[1]);
}
else
{
hdsiQuery.Add(String.Format("{0}.mnemonic", parmMap.ModelQuery), segs[1]);
}
}
else
{
hdsiQuery.Add(parmMap.ModelQuery + ".referenceTerm.term.mnemonic", itm);
}
}
break;
case QueryParameterRewriteType.Reference:
foreach (var itm in value)
{
if (itm.Contains("/"))
{
var segs = itm.Split('/');
hdsiQuery.Add(parmMap.ModelQuery, segs[1]);
}
else
{
hdsiQuery.Add(parmMap.ModelQuery, itm);
}
}
break;
case QueryParameterRewriteType.Tag:
foreach (var itm in value)
{
if (itm.Contains("|"))
{
var segs = itm.Split('|');
hdsiQuery.Add(String.Format("{0}[{1}].value", parmMap.ModelQuery, segs[0]), segs[1]);
}
else
{
hdsiQuery.Add(parmMap.ModelQuery, itm);
}
}
break;
default:
hdsiQuery.Add(parmMap.ModelQuery, value);
break;
}
}
return(retVal);
}
