Ensure abstract classes are set to retrievable = false in ModelInfo. (#533)

Author: lukedegruchy

tooling/src/main/java/org/opencds/cqf/tooling/modelinfo/ClassInfoBuilder.java

@@ -1402,9 +1402,9 @@ private ClassInfo buildClassInfo(String modelName, StructureDefinition sd) throw
         logger.info("Building ClassInfo for {}", typeName);
         ClassInfo info = new ClassInfo().withName(typeName).withNamespace(modelName).withLabel(this.getLabel(sd))
                 .withIdentifier(sd.getUrl())
-                .withRetrievable(sd.getKind() == StructureDefinitionKind.RESOURCE);
+                .withRetrievable(isStructureDefinitionRetrievable(sd));
 
-        if (sd.getKind() == StructureDefinitionKind.RESOURCE) {
+        if (isStructureDefinitionResource(sd)) {
             String targetTypeName = getTargetTypeName(sd);
             if (targetTypeName != null) {
                 info.setTarget(targetTypeName);
@@ -1442,7 +1442,7 @@ private ClassInfo buildClassInfo(String modelName, StructureDefinition sd) throw
         }
 
         String baseDefinition = sd.getBaseDefinition();
-        String baseTypeName = sd.getKind() == StructureDefinitionKind.RESOURCE
+        String baseTypeName = isStructureDefinitionResource(sd)
                 ? resolveBaseTypeName(sd.getType()) : resolveTypeName(baseDefinition);
 
         if (baseTypeName != null && !this.typeInfos.containsKey(baseTypeName)) {
@@ -1473,6 +1473,14 @@ private ClassInfo buildClassInfo(String modelName, StructureDefinition sd) throw
         return info;
     }
 
+    protected static boolean isStructureDefinitionRetrievable(StructureDefinition theStructureDefinition) {
+        return isStructureDefinitionResource(theStructureDefinition) && ! theStructureDefinition.getAbstract();
+    }
+
+    protected static boolean isStructureDefinitionResource(StructureDefinition theStructureDefinition) {
+        return theStructureDefinition.getKind() == StructureDefinitionKind.RESOURCE;
+    }
+
     @SuppressWarnings("unused")
     private StructureDefinition getBaseDefinitionStructureDef(String model, StructureDefinition sd) {
         String baseSd = (sd.getBaseDefinition() == null) ? null : getTail(sd.getBaseDefinition());