public static T parse()

in api/kogito-api-incubation-rules/src/main/java/org/kie/kogito/incubation/rules/RuleUnitIdParser.java [35:74]
38 lines of code
17 McCabe index (conditional complexity)

    public static <T extends LocalId> T parse(String id, Class<T> expected) {
        StringTokenizer tok = new StringTokenizer(id, "/");
        String prefix = tok.nextToken();

        if (!prefix.equals(RuleUnitId.PREFIX))
            throw newError(id, RuleUnitId.PREFIX);
        String ruleUnit = tok.nextToken();
        RuleUnitId ruleUnitId = new RuleUnitId(ruleUnit);
        if (expected == RuleUnitId.class)
            return (T) ruleUnitId;
        if (!tok.hasMoreTokens() && expected == LocalId.class)
            return (T) ruleUnitId;

        String instanceOrQuery = tok.nextToken();
        if (instanceOrQuery.equals(QueryId.PREFIX)) {
            String query = tok.nextToken();
            QueryId queryId = ruleUnitId.queries().get(query);
            if (expected == QueryId.class)
                return (T) queryId;
            if (!tok.hasMoreTokens() && expected == LocalId.class)
                return (T) queryId;
        }
        if (instanceOrQuery.equals(RuleUnitInstanceId.PREFIX)) {
            String instanceId = tok.nextToken();
            RuleUnitInstanceId ruleUnitInstanceId = ruleUnitId.instances().get(instanceId);
            if (expected == RuleUnitInstanceId.class)
                return (T) ruleUnitInstanceId;
            if (!tok.hasMoreTokens() && expected == LocalId.class)
                return (T) ruleUnitInstanceId;
            if (!tok.nextToken().equals(QueryId.PREFIX))
                throw newError(id, QueryId.PREFIX);
            String query = tok.nextToken();
            InstanceQueryId queryId = ruleUnitInstanceId.queries().get(query);
            if (expected == InstanceQueryId.class)
                return (T) queryId;
            if (!tok.hasMoreTokens() && expected == LocalId.class)
                return (T) queryId;
        }
        throw newError(id, "instances or queries");
    }