return null;
        } finally {
            final GroovyClassLoader loader = groovyShell.getClassLoader();
            loader.clearCache();
        }
    }

    @Override
    protected String getName() {
        return "groovy";
    }

        refresh();
    }

    public synchronized void refresh() {
        suggester.refresh();
        if (popularWordHelper != null) {
            popularWordHelper.clearCache();
        }
    }

    public void setSearchStoreInterval(final long searchStoreInterval) {
        this.searchStoreInterval = searchStoreInterval;
    }

                throw new JobProcessingException(out.toString());
            }
            ComponentUtil.getPopularWordHelper().clearCache();
        } catch (final JobProcessingException e) {
            throw e;
        } catch (final Exception e) {
            throw new JobProcessingException("ThumbnailGenerator Process terminated.", e);

            try {
                insert(urlQueue);
            } catch (final Exception e) {
                logger.warn("Failed to restore " + urlQueue, e);
            }
        }));
    }

    public void clearCache() {
        sessionCache.clear();
    }

    @Override
    public void updateSessionId(final String oldSessionId, final String newSessionId) {

        } catch (final Exception e) {
            logger.warn("Failed to delete UrlFilter for {}", sid, e);
        }

        try {
            // clear queue
            urlQueueService.clearCache();
            urlQueueService.delete(sid);
        } catch (final Exception e) {
            logger.warn("Failed to delete UrlQueue for {}", sid, e);
        }

        try {
            // clear