//                                                                           =========
    protected final SqlClause _sqlClause = new EsSqlClause(asTableDbName());
    protected int _safetyMaxResultSize;
    protected SearchRequestParams _searchRequestParams = new SearchRequestParams();
    protected String _preference;

    // ===================================================================================

    UnmodifiableIteratorMap(Map<K, V> delegate) {
      this.delegate = delegate;
    }

    @Override
    protected Map<K, V> delegate() {
      return delegate;
    }

    @Override
    public Set<K> keySet() {
      return new ForwardingSet<K>() {
        @Override
        protected Set<K> delegate() {
          return delegate.keySet();
        }

        @Override

        return getTid() != 0xFFFF;
    }


    @Override
    protected int writeParameterWordsWireFormat ( byte[] dst, int dstIndex ) {
        return 0;
    }


    @Override
    protected int writeBytesWireFormat ( byte[] dst, int dstIndex ) {
        return 0;
    }


    @Override
    protected int readParameterWordsWireFormat ( byte[] buffer, int bufferIndex ) {

        return facadeSelectByPK(id);
    }

    protected OptionalEntity<BoostDocumentRule> facadeSelectByPK(String id) {
        return doSelectOptionalByPK(id, typeOfSelectedEntity());
    }

    protected <ENTITY extends BoostDocumentRule> ENTITY doSelectByPK(String id, Class<? extends ENTITY> tp) {
        return doSelectEntity(xprepareCBAsPK(id), tp);
    }

    protected BoostDocumentRuleCB xprepareCBAsPK(String id) {

        return facadeSelectByPK(id);
    }

    protected OptionalEntity<RelatedContent> facadeSelectByPK(String id) {
        return doSelectOptionalByPK(id, typeOfSelectedEntity());
    }

    protected <ENTITY extends RelatedContent> ENTITY doSelectByPK(String id, Class<? extends ENTITY> tp) {
        return doSelectEntity(xprepareCBAsPK(id), tp);
    }

    protected RelatedContentCB xprepareCBAsPK(String id) {

public abstract class CorsHandler {

    protected static final String ACCESS_CONTROL_ALLOW_ORIGIN = "Access-Control-Allow-Origin";

    protected static final String ACCESS_CONTROL_ALLOW_HEADERS = "Access-Control-Allow-Headers";

    protected static final String ACCESS_CONTROL_ALLOW_METHODS = "Access-Control-Allow-Methods";

    @Override
    protected String getNamePrefix() {
        return NAME_PREFIX;
    }

    @Override
    protected String getApiPath() {
        return API_PATH;
    }

    @Override
    protected String getKeyProperty() {
        return KEY_PROPERTY;
    }

    @Override
    protected String getListEndpointSuffix() {
        return LIST_ENDPOINT_SUFFIX;
    }

    @Override
    protected String getNamePrefix() {
        return NAME_PREFIX;
    }

    @Override
    protected String getApiPath() {
        return API_PATH;
    }

    @Override
    protected String getKeyProperty() {
        return KEY_PROPERTY;
    }

    @Override
    protected String getListEndpointSuffix() {
        return LIST_ENDPOINT_SUFFIX;
    }

    @Override
    protected String getNamePrefix() {
        return NAME_PREFIX;
    }

    @Override
    protected String getApiPath() {
        return API_PATH;
    }

    @Override
    protected String getKeyProperty() {
        return KEY_PROPERTY;
    }

    @Override
    protected String getListEndpointSuffix() {
        return LIST_ENDPOINT_SUFFIX;
    }

    @Resource
    protected SearchEngineClient searchEngineClient;

    @Resource
    protected WebFsIndexHelper webFsIndexHelper;

    @Resource
    protected DataIndexHelper dataIndexHelper;

    @Resource
    protected PathMappingService pathMappingService;

    @Resource
    protected CrawlingInfoService crawlingInfoService;