Examples with Predicate com.hazelcast.query.Predicate used on opensource projects

Example 76 with Predicate

use of com.hazelcast.query.Predicate in project hazelcast by hazelcast.

the class VisitorUtilsTest method acceptVisitor_whenThereIsChange_thenReturnNewArray.

@Test
public void acceptVisitor_whenThereIsChange_thenReturnNewArray() {
    Visitor mockVisitor = mock(Visitor.class);
    Predicate[] predicates = new Predicate[2];
    Predicate p1 = createMockVisitablePredicate();
    predicates[0] = p1;
    Predicate transformed = mock(Predicate.class);
    Predicate p2 = createMockVisitablePredicate(transformed);
    predicates[1] = p2;
    Predicate[] result = VisitorUtils.acceptVisitor(predicates, mockVisitor, mockIndexes);
    assertThat(result, not(sameInstance(predicates)));
    assertThat(result, arrayWithSize(2));
    assertThat(result, arrayContainingInAnyOrder(p1, transformed));
}

Example 77 with Predicate

use of com.hazelcast.query.Predicate in project hazelcast by hazelcast.

the class MapAddEntryListenerWithPredicateMessageTask method getEventFilter.

@Override
protected EventFilter getEventFilter() {
    Predicate predicate = serializationService.toObject(parameters.predicate);
    QueryEventFilter eventFilter = new QueryEventFilter(parameters.includeValue, null, predicate);
    return new EventListenerFilter(parameters.listenerFlags, eventFilter);
}

Example 78 with Predicate

use of com.hazelcast.query.Predicate in project hazelcast by hazelcast.

the class QueryRunner method runIndexOrPartitionScanQueryOnOwnedPartitions.

// full query = index query (if possible), then partition-scan query
public Result runIndexOrPartitionScanQueryOnOwnedPartitions(Query query) throws ExecutionException, InterruptedException {
    int migrationStamp = getMigrationStamp();
    Collection<Integer> initialPartitions = mapServiceContext.getOwnedPartitions();
    MapContainer mapContainer = mapServiceContext.getMapContainer(query.getMapName());
    // first we optimize the query
    Predicate predicate = queryOptimizer.optimize(query.getPredicate(), mapContainer.getIndexes());
    // then we try to run using an index, but if that doesn't work, we'll try a full table scan
    // This would be the point where a query-plan should be added. It should determine f a full table scan
    // or an index should be used.
    Collection<QueryableEntry> entries = runUsingIndexSafely(predicate, mapContainer, migrationStamp);
    if (entries == null) {
        entries = runUsingPartitionScanSafely(query.getMapName(), predicate, initialPartitions, migrationStamp);
    }
    updateStatistics(mapContainer);
    if (entries != null) {
        // so that caller is aware of partitions from which results were obtained.
        return populateTheResult(query, entries, initialPartitions);
    } else {
        // then return empty result set without any partition IDs set (so that it is ignored by callers).
        return resultProcessorRegistry.get(query.getResultType()).populateResult(query, queryResultSizeLimiter.getNodeResultLimit(initialPartitions.size()));
    }
}

Example 79 with Predicate

use of com.hazelcast.query.Predicate in project hazelcast by hazelcast.

the class AbstractQueryCacheConfigurator method setPredicateImpl.

protected void setPredicateImpl(QueryCacheConfig config) {
    PredicateConfig predicateConfig = config.getPredicateConfig();
    if (predicateConfig.getImplementation() != null) {
        return;
    }
    Predicate predicate = getPredicate(predicateConfig);
    if (predicate == null) {
        return;
    }
    predicateConfig.setImplementation(predicate);
}

Example 80 with Predicate

use of com.hazelcast.query.Predicate in project hazelcast by hazelcast.

the class AbstractQueryCacheEndToEndConstructor method initQueryCacheConfig.

protected QueryCacheConfig initQueryCacheConfig(QueryCacheRequest request) {
    Predicate predicate = request.getPredicate();
    QueryCacheConfig queryCacheConfig;
    if (predicate == null) {
        queryCacheConfig = getOrNullQueryCacheConfig(mapName, request.getUserGivenCacheName());
    } else {
        queryCacheConfig = getOrCreateQueryCacheConfig(mapName, request.getUserGivenCacheName());
        queryCacheConfig.setIncludeValue(request.isIncludeValue());
        queryCacheConfig.getPredicateConfig().setImplementation(predicate);
    }
    if (queryCacheConfig == null) {
        return null;
    }
    // init some required parameters
    this.includeValue = queryCacheConfig.isIncludeValue();
    this.predicate = queryCacheConfig.getPredicateConfig().getImplementation();
    return queryCacheConfig;
}