Examples with ListResponse org.apache.cayenne.util.ListResponse used on opensource projects

Example 1 with ListResponse

use of org.apache.cayenne.util.ListResponse in project cayenne by apache.

the class ClientServerChannelQueryAction method interceptSinglePageQuery.

private boolean interceptSinglePageQuery() {
    // retrieve range from the previously cached list
    if (serverMetadata.getFetchOffset() >= 0 && serverMetadata.getFetchLimit() > 0 && serverMetadata.getCacheKey() != null) {
        List cachedList = channel.getQueryCache().get(serverMetadata);
        if (cachedList == null) {
            // attempt to refetch... respawn the action...
            Query originatingQuery = serverMetadata.getOriginatingQuery();
            if (originatingQuery != null) {
                ClientServerChannelQueryAction subaction = new ClientServerChannelQueryAction(channel, originatingQuery);
                subaction.execute();
                cachedList = channel.getQueryCache().get(serverMetadata);
                if (cachedList == null) {
                    throw new CayenneRuntimeException("No cached list for %s", serverMetadata.getCacheKey());
                }
            } else {
                return !DONE;
            }
        }
        int startIndex = serverMetadata.getFetchOffset();
        int endIndex = startIndex + serverMetadata.getFetchLimit();
        // send back just one page... query sender will figure out where it fits in
        // the incremental list
        this.response = new ListResponse(new ArrayList<>(cachedList.subList(startIndex, endIndex)));
        return DONE;
    }
    return !DONE;
}

Example 2 with ListResponse

use of org.apache.cayenne.util.ListResponse in project cayenne by apache.

the class DataContextQueryAction method interceptObjectFromDataRowsQuery.

private boolean interceptObjectFromDataRowsQuery() {
    if (query instanceof ObjectsFromDataRowsQuery) {
        ObjectsFromDataRowsQuery objectsFromDataRowsQuery = (ObjectsFromDataRowsQuery) query;
        response = new ListResponse(actingDataContext.objectsFromDataRows(objectsFromDataRowsQuery.getDescriptor(), objectsFromDataRowsQuery.getDataRows()));
        return DONE;
    }
    return !DONE;
}

Example 3 with ListResponse

use of org.apache.cayenne.util.ListResponse in project cayenne by apache.

the class DataDomainFiltersIT method testOnQuery_Blocking.

@Test
public void testOnQuery_Blocking() {
    DataDomain domain = runtime.getDataDomain();
    QueryResponse r1 = new ListResponse();
    QueryResponse r2 = new ListResponse();
    DataChannelQueryFilter f1 = (originatingContext, query, filterChain) -> r1;
    DataChannelQueryFilter f2 = (originatingContext, query, filterChain) -> r2;
    domain.queryFilters.add(f1);
    domain.queryFilters.add(f2);
    ObjectSelect<Artist> query = ObjectSelect.query(Artist.class);
    QueryResponse response = domain.onQuery(context, query);
    assertSame(r2, response);
}

Example 4 with ListResponse

use of org.apache.cayenne.util.ListResponse in project cayenne by apache.

the class DataDomainQueryAction method interceptOIDQuery.

private boolean interceptOIDQuery() {
    if (query instanceof ObjectIdQuery) {
        ObjectIdQuery oidQuery = (ObjectIdQuery) query;
        ObjectId oid = oidQuery.getObjectId();
        // translate and run the query. See for instance CAY-1651
        if (oid.isTemporary() && !oid.isReplacementIdAttached()) {
            response = new ListResponse();
            return DONE;
        }
        DataRow row = null;
        if (cache != null && !oidQuery.isFetchMandatory()) {
            row = polymorphicRowFromCache(oid);
        }
        // refresh is forced or not found in cache
        if (row == null) {
            if (oidQuery.isFetchAllowed()) {
                runQueryInTransaction();
            } else {
                response = new ListResponse();
            }
        } else {
            response = new ListResponse(row);
        }
        return DONE;
    }
    return !DONE;
}

Example 5 with ListResponse

use of org.apache.cayenne.util.ListResponse in project cayenne by apache.

the class DataDomainQueryAction method interceptSharedCache.

/*
     * Wraps execution in shared cache checks
     */
private 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;
}