public T setAttributesForDisplay()

in scim-server/src/main/java/org/apache/directory/scim/server/rest/AttributeUtil.java [92:136]
37 lines of code
7 McCabe index (conditional complexity)

  public <T extends ScimResource> T setAttributesForDisplay(T resource, Set<AttributeReference> attributes) throws AttributeException {
    if (attributes.isEmpty()) {
      return setAttributesForDisplay(resource);
    } else {
      T copy = cloneScimResource(resource);
      
      String resourceType = copy.getResourceType();
      Schema schema = schemaRegistry.getBaseSchemaOfResourceType(resourceType);

      // return always and specified attributes, exclude never
      Set<Attribute> attributesToKeep = resolveAttributeReferences(attributes, true);
      Set<String> extensionsToRemove = new HashSet<>();
      removeAttributesOfType(copy, schema, Returned.DEFAULT, attributesToKeep);
      removeAttributesOfType(copy, schema, Returned.REQUEST, attributesToKeep);
      removeAttributesOfType(copy, schema, Returned.NEVER);

      for (Entry<String, ScimExtension> extensionEntry : copy.getExtensions().entrySet()) {
        String extensionUrn = extensionEntry.getKey();
        ScimExtension scimExtension = extensionEntry.getValue();
        boolean removeExtension = true;

        for (Attribute attributeToKeep : attributesToKeep) {
          if (extensionUrn.equalsIgnoreCase(attributeToKeep.getSchemaUrn())) {
            removeExtension = false;

            break;
          }
        }
        if (removeExtension) {
          extensionsToRemove.add(extensionUrn);

          continue;
        }
        Schema extensionSchema = schemaRegistry.getSchema(extensionUrn);

        removeAttributesOfType(scimExtension, extensionSchema, Returned.DEFAULT, attributesToKeep);
        removeAttributesOfType(scimExtension, extensionSchema, Returned.REQUEST, attributesToKeep);
        removeAttributesOfType(scimExtension, extensionSchema, Returned.NEVER);
      }
      for (String extensionUrn : extensionsToRemove) {
        copy.removeExtension(extensionUrn);
      }
      return copy;
    }
  }