Examples with ConnectionContainer com.yahoo.elide.graphql.containers.ConnectionContainer used on opensource projects

Example 1 with ConnectionContainer

use of com.yahoo.elide.graphql.containers.ConnectionContainer in project elide by yahoo.

the class PersistentResourceFetcher method removeObjects.

/**
 * Removes a relationship, or deletes a root level resource.
 * @param context Environment encapsulating graphQL's request environment
 * @return set of removed {@link PersistentResource} object(s)
 */
private ConnectionContainer removeObjects(Environment context) {
    /* sanity check for id and data argument w REPLACE */
    if (context.data.isPresent()) {
        throw new BadRequestException("REPLACE must not include data argument");
    }
    if (!context.ids.isPresent()) {
        throw new BadRequestException("REPLACE must include ids argument");
    }
    ConnectionContainer connection = (ConnectionContainer) fetchObjects(context);
    Set<PersistentResource> toRemove = connection.getPersistentResources();
    if (!context.isRoot()) {
        /* has parent */
        toRemove.forEach(item -> context.parentResource.removeRelation(context.field.getName(), item));
    } else {
        /* is root */
        toRemove.forEach(PersistentResource::deleteResource);
    }
    return new ConnectionContainer(Collections.emptySet(), Optional.empty(), connection.getTypeName());
}

Example 2 with ConnectionContainer

use of com.yahoo.elide.graphql.containers.ConnectionContainer in project elide by yahoo.

the class PersistentResourceFetcher method fetchObject.

/**
 * Fetches a root-level entity.
 * @param requestScope Request scope
 * @param projection constructed entityProjection for a class
 * @param ids List of ids (can be NULL)
 * @return {@link PersistentResource} object(s)
 */
public static ConnectionContainer fetchObject(RequestScope requestScope, EntityProjection projection, Optional<List<String>> ids) {
    EntityDictionary dictionary = requestScope.getDictionary();
    String typeName = dictionary.getJsonAliasFor(projection.getType());
    /* fetching a collection */
    Observable<PersistentResource> records = ids.map((idList) -> {
        /* handle empty list of ids */
        if (idList.isEmpty()) {
            throw new BadRequestException("Empty list passed to ids");
        }
        return PersistentResource.loadRecords(projection, idList, requestScope);
    }).orElseGet(() -> PersistentResource.loadRecords(projection, new ArrayList<>(), requestScope));
    return new ConnectionContainer(records.toList(LinkedHashSet::new).blockingGet(), Optional.ofNullable(projection.getPagination()), typeName);
}

Example 3 with ConnectionContainer

use of com.yahoo.elide.graphql.containers.ConnectionContainer in project elide by yahoo.

the class PersistentResourceFetcher method replaceObjects.

/**
 * Replaces a resource, updates given resource and deletes the rest
 * belonging to the the same type/relationship family.
 * @param context Environment encapsulating graphQL's request environment
 * @return set of replaced {@link PersistentResource} object(s)
 */
private ConnectionContainer replaceObjects(Environment context) {
    /* sanity check for id and data argument w REPLACE */
    if (!context.data.isPresent()) {
        throw new BadRequestException("REPLACE must include data argument");
    }
    if (context.ids.isPresent()) {
        throw new BadRequestException("REPLACE must not include ids argument");
    }
    ConnectionContainer existingObjects = (ConnectionContainer) context.container.processFetch(context);
    ConnectionContainer upsertedObjects = upsertObjects(context);
    Set<PersistentResource> toDelete = Sets.difference(existingObjects.getPersistentResources(), upsertedObjects.getPersistentResources());
    if (!context.isRoot()) {
        /* has parent */
        toDelete.forEach(item -> context.parentResource.removeRelation(context.field.getName(), item));
    } else {
        /* is root */
        toDelete.forEach(PersistentResource::deleteResource);
    }
    return upsertedObjects;
}

Example 4 with ConnectionContainer

use of com.yahoo.elide.graphql.containers.ConnectionContainer in project elide by yahoo.

the class PersistentResourceFetcher method deleteObjects.

/**
 * Deletes a resource.
 * @param context Environment encapsulating graphQL's request environment
 * @return set of deleted {@link PersistentResource} object(s)
 */
private ConnectionContainer deleteObjects(Environment context) {
    /* sanity check for id and data argument w DELETE */
    if (context.data.isPresent()) {
        throw new BadRequestException("DELETE must not include data argument");
    }
    if (!context.ids.isPresent()) {
        throw new BadRequestException("DELETE must include ids argument");
    }
    ConnectionContainer connection = (ConnectionContainer) fetchObjects(context);
    Set<PersistentResource> toDelete = connection.getPersistentResources();
    toDelete.forEach(PersistentResource::deleteResource);
    return new ConnectionContainer(Collections.emptySet(), Optional.empty(), connection.getTypeName());
}

Example 5 with ConnectionContainer

use of com.yahoo.elide.graphql.containers.ConnectionContainer in project elide by yahoo.

the class PersistentResourceFetcher method fetchRelationship.

/**
 * Fetches a relationship for a top-level entity.
 *
 * @param parentResource Parent object
 * @param relationship constructed relationship object with entityProjection
 * @param ids List of ids
 * @return persistence resource object(s)
 */
public static ConnectionContainer fetchRelationship(PersistentResource<?> parentResource, @NotNull Relationship relationship, Optional<List<String>> ids) {
    EntityDictionary dictionary = parentResource.getRequestScope().getDictionary();
    Type relationshipClass = dictionary.getParameterizedType(parentResource.getObject(), relationship.getName());
    String relationshipType = dictionary.getJsonAliasFor(relationshipClass);
    Set<PersistentResource> relationResources;
    if (ids.isPresent()) {
        relationResources = parentResource.getRelation(ids.get(), relationship).toList(LinkedHashSet::new).blockingGet();
    } else {
        relationResources = parentResource.getRelationCheckedFiltered(relationship).toList(LinkedHashSet::new).blockingGet();
    }
    return new ConnectionContainer(relationResources, Optional.ofNullable(relationship.getProjection().getPagination()), relationshipType);
}