public void importConfigs()

in openmeetings-install/src/main/java/org/apache/openmeetings/backup/BackupImport.java [538:596]
56 lines of code
18 McCabe index (conditional complexity)

	public void importConfigs(File base) throws Exception {
		final Map<Integer, String> keyMap = new HashMap<>();
		Arrays.stream(KeyEvent.class.getDeclaredFields())
				.filter(fld -> fld.getName().startsWith("VK_"))
				.forEach(fld -> {
					try {
						keyMap.put(fld.getInt(null), "Shift+" + WordUtils.capitalizeFully(fld.getName().substring(3)));
					} catch (IllegalArgumentException|IllegalAccessException e) {
						log.error("Unexpected exception while building KEY map {}", fld);
					}
				});

		Class<Configuration> eClazz = Configuration.class;
		JAXBContext jc = JAXBContext.newInstance(eClazz);
		Unmarshaller unmarshaller = jc.createUnmarshaller();
		unmarshaller.setAdapter(new UserAdapter(userDao, userMap));

		readList(unmarshaller, base, "configs.xml", CFG_LIST_NODE, CFG_NODE, eClazz, c -> {
			if (c.getKey() == null || c.isDeleted()) {
				return;
			}
			String newKey = outdatedConfigKeys.get(c.getKey());
			if (newKey != null) {
				c.setKey(newKey);
			}
			Configuration.Type type = configTypes.get(c.getKey());
			if (type != null) {
				c.setType(type);
				if (Configuration.Type.BOOL == type) {
					c.setValue(String.valueOf("1".equals(c.getValue()) || "yes".equals(c.getValue()) || "true".equals(c.getValue())));
				} else if (Configuration.Type.HOTKEY == type) {
					try {
						int val = c.getValueN().intValue();
						c.setValue(keyMap.get(val));
					} catch(Exception e) {
						//no-op, value is already HOTKEY
					}
				}
			}
			Configuration cfg = cfgDao.forceGet(c.getKey());
			if (cfg != null && !cfg.isDeleted()) {
				log.warn("Non deleted configuration with same key is found! old value: {}, new value: {}", cfg.getValue(), c.getValue());
			}
			c.setId(cfg == null ? null : cfg.getId());
			if (c.getUser() != null && c.getUser().getId() == null) {
				c.setUser(null);
			}
			if (CONFIG_CRYPT.equals(c.getKey())) {
				try {
					Class<?> clazz = Class.forName(c.getValue());
					clazz.getDeclaredConstructor().newInstance();
				} catch (Exception e) {
					log.warn("Not existing Crypt class found {}, replacing with SCryptImplementation", c.getValue());
					c.setValue(SCryptImplementation.class.getCanonicalName());
				}
			}
			cfgDao.update(c, null);
		});
	}