public void init()

in commons-jcs3-jcache-extras/src/main/java/org/apache/commons/jcs3/jcache/extras/web/JCacheFilter.java [62:112]
49 lines of code
9 McCabe index (conditional complexity)

    public void init(final FilterConfig filterConfig) throws ServletException
    {
        final ClassLoader classLoader = filterConfig.getServletContext().getClassLoader();
        provider = Caching.getCachingProvider(classLoader);

        String uri = filterConfig.getInitParameter("configuration");
        if (uri == null)
        {
            uri = provider.getDefaultURI().toString();
        }
        final Properties properties = new Properties();
        for (final String key : list(filterConfig.getInitParameterNames()))
        {
            final String value = filterConfig.getInitParameter(key);
            if (value != null)
            {
                properties.put(key, value);
            }
        }
        manager = provider.getCacheManager(URI.create(uri), classLoader, properties);

        String cacheName = filterConfig.getInitParameter("cache-name");
        if (cacheName == null)
        {
            cacheName = JCacheFilter.class.getName();
        }
        cache = manager.getCache(cacheName);
        if (cache == null)
        {
            final MutableConfiguration<PageKey, Page> configuration = new MutableConfiguration<PageKey, Page>()
                    .setStoreByValue(false);
            configuration.setReadThrough("true".equals(properties.getProperty("read-through", "false")));
            configuration.setWriteThrough("true".equals(properties.getProperty("write-through", "false")));
            if (configuration.isReadThrough())
            {
                configuration.setCacheLoaderFactory(new FactoryBuilder.ClassFactory<CacheLoader<PageKey, Page>>(properties.getProperty("cache-loader-factory")));
            }
            if (configuration.isWriteThrough())
            {
                configuration.setCacheWriterFactory(new FactoryBuilder.ClassFactory<CacheWriter<? super PageKey, ? super Page>>(properties.getProperty("cache-writer-factory")));
            }
            final String expirtyPolicy = properties.getProperty("expiry-policy-factory");
            if (expirtyPolicy != null)
            {
                configuration.setExpiryPolicyFactory(new FactoryBuilder.ClassFactory<ExpiryPolicy>(expirtyPolicy));
            }
            configuration.setManagementEnabled("true".equals(properties.getProperty("management-enabled", "false")));
            configuration.setStatisticsEnabled("true".equals(properties.getProperty("statistics-enabled", "false")));
            cache = manager.createCache(cacheName, configuration);
        }
    }