read-through-ehcache.js

require('ringo/engine').loadJars(module.resolve("./jars/"));
const {CacheManagerBuilder, CacheConfigurationBuilder,
    ResourcePoolsBuilder} = Packages.org.ehcache.config.builders;
const {CacheLoaderWriter} = Packages.org.ehcache.spi.loaderwriter;

const main = () => {
    const loaderReader = new CacheLoaderWriter({
        load(key) {
            console.log('cache loader requested to read key', key);
            return 'result from loader';
        },
        loadAll(keys) {
            // wont happen
            console.log(keys);
        }
    });

    const cacheManager = CacheManagerBuilder.newCacheManagerBuilder().build(true);
    const readThroughCache = cacheManager.createCache("readThroughCache",
        CacheConfigurationBuilder.newCacheConfigurationBuilder(java.lang.String, java.lang.String, ResourcePoolsBuilder.heap(10))
            .withLoaderWriter(loaderReader)
            .build());

    console.log('first cache.get')
    readThroughCache.get('/test/url');
    console.log('second cache.get')
    readThroughCache.get('/test/url');
};

main();