Examples with QueryCache org.apache.cayenne.cache.QueryCache used on opensource projects

Example 6 with QueryCache

use of org.apache.cayenne.cache.QueryCache in project cayenne by apache.

the class DataDomainQueryAction method interceptSharedCache.

/*
     * Wraps execution in shared cache checks
     */
private final boolean interceptSharedCache() {
    if (metadata.getCacheKey() == null) {
        return !DONE;
    }
    boolean cache = QueryCacheStrategy.SHARED_CACHE == metadata.getCacheStrategy();
    boolean cacheOrCacheRefresh = cache || QueryCacheStrategy.SHARED_CACHE_REFRESH == metadata.getCacheStrategy();
    if (!cacheOrCacheRefresh) {
        return !DONE;
    }
    QueryCache queryCache = domain.getQueryCache();
    QueryCacheEntryFactory factory = getCacheObjectFactory();
    if (cache) {
        List cachedResults = queryCache.get(metadata, factory);
        // there was a preexisting cache entry
        if (response == null) {
            response = new ListResponse(cachedResults);
        }
        if (cachedResults instanceof ListWithPrefetches) {
            this.prefetchResultsByPath = ((ListWithPrefetches) cachedResults).getPrefetchResultsByPath();
        }
    } else {
        // on cache-refresh request, fetch without blocking and fill the
        // cache
        queryCache.put(metadata, factory.createObject());
    }
    return DONE;
}