org.semanticweb.owlapi.model.HasComponents Maven / Gradle / Ivy

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package org.semanticweb.owlapi.model;

import java.util.stream.Stream;

/**
 * An interface for objects that have a set of components - this is useful for
 * all those situations where a generic action has to be performed on all
 * components of an object, such as hashcode and equals computations, or
 * rendering in a syntax.
 */
public interface HasComponents {

    /** @return components as a stream */
    Stream components();

    /**
     * @return components as a stream; for objects that can have annotations on
     *         them, annotation streams appear first. This is useful in
     *         renderers.
     */
    default Stream componentsAnnotationsFirst() {
        return components();
    }

    /**
     * @return components as a stream; for objects that can have annotations on
     *         them, these are skipped. This is useful for comparing axioms
     *         without taking annotations into account. Note: annotations on
     *         nested objects are not affected.
     */
    default Stream componentsWithoutAnnotations() {
        return components();
    }
}