job.java.jersey.server.custom-param.java

@Component
@Provider
public class SiteWithParamsConverterProvider implements ParamConverterProvider {

    @Autowired
    private Converter converter;

    @Override
    public <T> ParamConverter<T> getConverter(Class<T> rawType, Type genericType, Annotation[] annotations) {
        if (genericType.equals(SiteWithParams.class)) {
            return (ParamConverter<T>) converter;
        }
        return null;
    }


    @Component
    public static class Converter implements ParamConverter<SiteWithParams> {

        private Map<Site, SiteWithParams> siteWithParamsBySites;

        @Autowired
        public Converter(List<SiteWithParams> sitesWithParams) {
            this.siteWithParamsBySites = sitesWithParams
                    .stream()
                    .collect(Collectors.toMap(SiteWithParams::getSite, item -> item));
        }

        @Override
        public SiteWithParams fromString(String siteCode) {
            Site site = (siteCode == null) ? null : Site.getSiteByCode(siteCode.toLowerCase());
            SiteWithParams siteWithParams = (site == null) ? null : siteWithParamsBySites.get(site);

            if (siteWithParams == null) {
                throw new SiteWithParamsBuilder.UnknownSiteException(siteCode);
            }

            return siteWithParams;
        }

        @Override
        public String toString(SiteWithParams value) {
            return value.getSite().getCode();
        }
    }
}