protected Map getPersistedPrivilegesMap()

in src/main/java/org/apache/sling/starter/access/models/Ace.java [442:492]
45 lines of code
9 McCabe index (conditional complexity)

    protected Map<Privilege, PrivilegeItem> getPersistedPrivilegesMap() throws RepositoryException {
        if (persistedPrivilegesMap == null) {
            Session jcrSession = request.getResourceResolver().adaptTo(Session.class);
            Map<Privilege, String> privilegeToLongestPath = AceUtils.getPrivilegeLongestPathMap(jcrSession);
            String acePath = getAcePath();
            persistedPrivilegesMap = initialPrivilegesMap(privilegeToLongestPath, acePath);

            JsonObject ace;
            try {
                ace = getAce.getAce(jcrSession, acePath, getPrincipalId());
            } catch (ResourceNotFoundException rnfe) {
                // no ACE exists yet?
                ace = null;
            }
            if (ace != null) {
                aceExists = true;
                AccessControlManager acm = jcrSession.getAccessControlManager();

                //make a temp map for quick lookup below
                Set<RestrictionDefinition> supportedRestrictions = getSupportedRestrictions();
                Map<String, RestrictionDefinition> srMap = toSrMap(supportedRestrictions);

                JsonObject privileges = ace.getJsonObject("privileges");
                for (String pn : privileges.keySet()) {
                    Privilege p = acm.privilegeFromName(pn);
                    PrivilegeItem privilegeItem = persistedPrivilegesMap.computeIfAbsent(p, key -> new PrivilegeItem(key.getName(), false, false, privilegeToLongestPath.get(key)));

                    JsonObject privilegeObj = privileges.getJsonObject(pn);
                    JsonValue allowJsonValue = privilegeObj.get("allow");
                    if (allowJsonValue != null) {
                        privilegeItem.setAllowExists(true);
                        privilegeItem.setGranted(true);
                        if (allowJsonValue instanceof JsonObject) {
                            List<RestrictionItem> restrictionItems = jsonToRestrictionItems(srMap, (JsonObject)allowJsonValue);
                            privilegeItem.setAllowRestrictions(restrictionItems);
                        }
                    }
                    JsonValue denyJsonValue = privilegeObj.get("deny");
                    if (denyJsonValue != null) {
                        privilegeItem.setDenyExists(true);
                        privilegeItem.setDenied(true);
                        if (denyJsonValue instanceof JsonObject) {
                            List<RestrictionItem> restrictionItems = jsonToRestrictionItems(srMap, (JsonObject)denyJsonValue);
                            privilegeItem.setDenyRestrictions(restrictionItems);
                        }
                    }
                }
            }
        }
        return persistedPrivilegesMap;
    }