Examples with FilterExpression com.yahoo.elide.core.filter.expression.FilterExpression used on opensource projects

Example 76 with FilterExpression

use of com.yahoo.elide.core.filter.expression.FilterExpression in project elide by yahoo.

the class DataStoreLoadTest method testEqualityPredicate.

@Test
public void testEqualityPredicate() throws Exception {
    DataStoreTransaction testTransaction = searchStore.beginReadTransaction();
    // Case sensitive query against case insensitive index must lowercase
    FilterExpression filter = filterParser.parseFilterExpression("name==drum", ClassType.of(Item.class), false);
    Iterable<Object> loaded = testTransaction.loadObjects(EntityProjection.builder().type(Item.class).filterExpression(filter).build(), mockScope);
    assertNull(loaded);
    /* This query should hit the underlying store */
    verify(wrappedTransaction, times(1)).loadObjects(any(), any());
}

Example 77 with FilterExpression

use of com.yahoo.elide.core.filter.expression.FilterExpression in project elide by yahoo.

the class DataStoreSupportsFilteringTest method testUnindexedField.

@Test
public void testUnindexedField() throws Exception {
    /* The field is not indexed */
    DataStoreTransaction testTransaction = searchStore.beginReadTransaction();
    FilterExpression filter = filterParser.parseFilterExpression("price==123", ClassType.of(Item.class), false);
    EntityProjection projection = EntityProjection.builder().type(Item.class).filterExpression(filter).build();
    DataStoreIterable<Object> loaded = testTransaction.loadObjects(projection, mockScope);
    // The query was passed to the wrapped transaction which is a mock.
    assertNull(loaded);
    verify(wrappedTransaction, times(1)).loadObjects(any(), any());
}

Example 78 with FilterExpression

use of com.yahoo.elide.core.filter.expression.FilterExpression in project elide by yahoo.

the class DataStoreSupportsFilteringTest method testIndexedField.

@Test
public void testIndexedField() throws Exception {
    /* The field is indexed using the @Field annotation */
    DataStoreTransaction testTransaction = searchStore.beginReadTransaction();
    FilterExpression filter = filterParser.parseFilterExpression("description==*rum*", ClassType.of(Item.class), false);
    EntityProjection projection = EntityProjection.builder().type(Item.class).filterExpression(filter).build();
    DataStoreIterable<Object> loaded = testTransaction.loadObjects(projection, mockScope);
    assertFalse(loaded.needsInMemoryFilter());
    assertFalse(loaded.needsInMemoryPagination());
    assertFalse(loaded.needsInMemorySort());
    verify(wrappedTransaction, times(0)).loadObjects(any(), any());
}

Example 79 with FilterExpression

use of com.yahoo.elide.core.filter.expression.FilterExpression in project elide by yahoo.

the class PersistentResource method loadRecords.

/**
 * Load a collection from the datastore.
 *
 * @param projection   the projection to load
 * @param requestScope the request scope
 * @param ids          a list of object identifiers to optionally load.  Can be empty.
 * @return a filtered collection of resources loaded from the datastore.
 */
public static Observable<PersistentResource> loadRecords(EntityProjection projection, List<String> ids, RequestScope requestScope) {
    Type<?> loadClass = projection.getType();
    Pagination pagination = projection.getPagination();
    Sorting sorting = projection.getSorting();
    FilterExpression filterExpression = projection.getFilterExpression();
    EntityDictionary dictionary = requestScope.getDictionary();
    DataStoreTransaction tx = requestScope.getTransaction();
    if (shouldSkipCollection(loadClass, ReadPermission.class, requestScope, projection.getRequestedFields())) {
        if (ids.isEmpty()) {
            return Observable.empty();
        }
        throw new InvalidObjectIdentifierException(ids.toString(), dictionary.getJsonAliasFor(loadClass));
    }
    Set<String> requestedFields = projection.getRequestedFields();
    if (pagination != null && !pagination.isDefaultInstance() && !CanPaginateVisitor.canPaginate(loadClass, dictionary, requestScope, requestedFields)) {
        throw new BadRequestException(String.format("Cannot paginate %s", dictionary.getJsonAliasFor(loadClass)));
    }
    Set<PersistentResource> newResources = new LinkedHashSet<>();
    if (!ids.isEmpty()) {
        String typeAlias = dictionary.getJsonAliasFor(loadClass);
        newResources = requestScope.getNewPersistentResources().stream().filter(resource -> typeAlias.equals(resource.getTypeName()) && ids.contains(resource.getUUID().orElse(""))).collect(Collectors.toSet());
        FilterExpression idExpression = buildIdFilterExpression(ids, loadClass, dictionary, requestScope);
        // Combine filters if necessary
        filterExpression = Optional.ofNullable(filterExpression).map(fe -> (FilterExpression) new AndFilterExpression(idExpression, fe)).orElse(idExpression);
    }
    Optional<FilterExpression> permissionFilter = getPermissionFilterExpression(loadClass, requestScope, requestedFields);
    if (permissionFilter.isPresent()) {
        if (filterExpression != null) {
            filterExpression = new AndFilterExpression(filterExpression, permissionFilter.get());
        } else {
            filterExpression = permissionFilter.get();
        }
    }
    EntityProjection modifiedProjection = projection.copyOf().filterExpression(filterExpression).sorting(sorting).pagination(pagination).build();
    Observable<PersistentResource> existingResources = filter(ReadPermission.class, Optional.ofNullable(modifiedProjection.getFilterExpression()), projection.getRequestedFields(), Observable.fromIterable(new PersistentResourceSet(tx.loadObjects(modifiedProjection, requestScope), requestScope)));
    // TODO: Sort again in memory now that two sets are glommed together?
    Observable<PersistentResource> allResources = Observable.fromIterable(newResources).mergeWith(existingResources);
    Set<String> foundIds = new HashSet<>();
    allResources = allResources.doOnNext((resource) -> {
        String id = (String) resource.getUUID().orElseGet(resource::getId);
        if (ids.contains(id)) {
            foundIds.add(id);
        }
    });
    allResources = allResources.doOnComplete(() -> {
        Set<String> missedIds = Sets.difference(new HashSet<>(ids), foundIds);
        if (!missedIds.isEmpty()) {
            throw new InvalidObjectIdentifierException(missedIds.toString(), dictionary.getJsonAliasFor(loadClass));
        }
    });
    return allResources;
}

Example 80 with FilterExpression

use of com.yahoo.elide.core.filter.expression.FilterExpression in project elide by yahoo.

the class PersistentResource method loadRecord.

/**
 * Load an single entity from the DB.
 *
 * @param projection   What to load from the DB.
 * @param id           the id
 * @param requestScope the request scope
 * @param <T>          type of resource
 * @return resource persistent resource
 * @throws InvalidObjectIdentifierException the invalid object identifier exception
 */
@SuppressWarnings("resource")
@NonNull
public static <T> PersistentResource<T> loadRecord(EntityProjection projection, String id, RequestScope requestScope) throws InvalidObjectIdentifierException {
    Preconditions.checkNotNull(projection);
    Preconditions.checkNotNull(id);
    Preconditions.checkNotNull(requestScope);
    DataStoreTransaction tx = requestScope.getTransaction();
    EntityDictionary dictionary = requestScope.getDictionary();
    Type<?> loadClass = projection.getType();
    // Check the resource cache if exists
    Object obj = requestScope.getObjectById(loadClass, id);
    if (obj == null) {
        // try to load object
        Optional<FilterExpression> permissionFilter = getPermissionFilterExpression(loadClass, requestScope, projection.getRequestedFields());
        Type<?> idType = dictionary.getIdType(loadClass);
        projection = projection.copyOf().filterExpression(permissionFilter.orElse(null)).build();
        obj = tx.loadObject(projection, (Serializable) CoerceUtil.coerce(id, idType), requestScope);
        if (obj == null) {
            throw new InvalidObjectIdentifierException(id, dictionary.getJsonAliasFor(loadClass));
        }
    }
    PersistentResource<T> resource = new PersistentResource<>((T) obj, requestScope.getUUIDFor(obj), requestScope);
    // No need to have read access for a newly created object
    if (!requestScope.getNewResources().contains(resource)) {
        resource.checkFieldAwarePermissions(ReadPermission.class, projection.getRequestedFields());
    }
    return resource;
}