Examples with EmptyStep org.apache.tinkerpop.gremlin.process.traversal.step.util.EmptyStep used on opensource projects

Example 1 with EmptyStep

use of org.apache.tinkerpop.gremlin.process.traversal.step.util.EmptyStep in project unipop by unipop-graph.

the class UniGraphPropertiesStrategy method getAllPropertyFetchersOf.

private List<PropertyFetcher> getAllPropertyFetchersOf(Step step, Traversal.Admin<?, ?> traversal) {
    List<PropertyFetcher> propertyFetchers = new ArrayList<>();
    Step previous = step.getPreviousStep();
    while (!(previous instanceof EmptyStep)) {
        if (previous instanceof PropertyFetcher)
            propertyFetchers.add((PropertyFetcher) previous);
        if (previous instanceof TraversalParent) {
            ((TraversalParent) previous).getLocalChildren().forEach(t -> t.getSteps().stream().filter(s -> s instanceof PropertyFetcher).map(p -> ((PropertyFetcher) p)).forEach(propertyFetchers::add));
            ((TraversalParent) previous).getGlobalChildren().forEach(t -> t.getSteps().stream().filter(s -> s instanceof PropertyFetcher).map(p -> ((PropertyFetcher) p)).forEach(propertyFetchers::add));
        }
        previous = previous.getPreviousStep();
    }
    return propertyFetchers;
}