Examples with UPDATE com.yahoo.elide.annotation.LifeCycleHookBinding.Operation.UPDATE used on opensource projects

Example 1 with UPDATE

use of com.yahoo.elide.annotation.LifeCycleHookBinding.Operation.UPDATE in project elide by yahoo.

the class PersistentResource method getRelation.

/**
 * Load a relation from the PersistentResource.
 *
 * @param relationship the relation
 * @param ids          a list of object identifiers to optionally load.  Can be empty.
 * @return PersistentResource relation
 */
public Observable<PersistentResource> getRelation(List<String> ids, com.yahoo.elide.core.request.Relationship relationship) {
    FilterExpression filterExpression = Optional.ofNullable(relationship.getProjection().getFilterExpression()).orElse(null);
    assertPropertyExists(relationship.getName());
    Type<?> entityType = dictionary.getParameterizedType(getResourceType(), relationship.getName());
    Set<PersistentResource> newResources = new LinkedHashSet<>();
    /* If this is a bulk edit request and the ID we are fetching for is newly created... */
    if (!ids.isEmpty()) {
        // Fetch our set of new resources that we know about since we can't find them in the datastore
        newResources = requestScope.getNewPersistentResources().stream().filter(resource -> entityType.isAssignableFrom(resource.getResourceType()) && ids.contains(resource.getUUID().orElse(""))).collect(Collectors.toSet());
        FilterExpression idExpression = buildIdFilterExpression(ids, entityType, dictionary, requestScope);
        // Combine filters if necessary
        filterExpression = Optional.ofNullable(relationship.getProjection().getFilterExpression()).map(fe -> (FilterExpression) new AndFilterExpression(idExpression, fe)).orElse(idExpression);
    }
    // TODO: Filter on new resources?
    // TODO: Update pagination to subtract the number of new resources created?
    Observable<PersistentResource> existingResources = filter(ReadPermission.class, Optional.ofNullable(filterExpression), relationship.getProjection().getRequestedFields(), getRelation(relationship.copyOf().projection(relationship.getProjection().copyOf().filterExpression(filterExpression).build()).build(), true));
    // 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(), relationship.getName());
        }
    });
    return allResources;
}