org.semanticweb.owlapi.model.HasComponents Maven / Gradle / Ivy
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.
* The stream is ordered (by visit order) but not sorted. Implementations that override
* components() must ensure the order is compatible with equals() and hashCode().
*/
Stream components();
/**
* @return components as a stream; for objects that can have annotations on them, annotation
* streams appear first. This is useful in renderers.
* The stream is ordered (by visit order) but not sorted. Implementations that override
* components() must ensure the order is compatible with equals() and hashCode().
*/
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.
* The stream is ordered (by visit order) but not sorted. Implementations that override
* components() must ensure the order is compatible with equals() and hashCode().
*/
default Stream componentsWithoutAnnotations() {
return components();
}
}