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/* This file is part of the OWL API.
* The contents of this file are subject to the LGPL License, Version 3.0.
* Copyright 2014, The University of Manchester
*
* This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.
* This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
* You should have received a copy of the GNU General Public License along with this program. If not, see http://www.gnu.org/licenses/.
*
* Alternatively, the contents of this file may be used under the terms of the Apache License, Version 2.0 in which case, the provisions of the Apache License Version 2.0 are applicable instead of those above.
* Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at
* http://www.apache.org/licenses/LICENSE-2.0
* Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License. */
package org.semanticweb.owlapi.model;
import static org.semanticweb.owlapi.util.OWLAPIStreamUtils.equalStreams;
import java.util.Arrays;
import java.util.Collection;
import java.util.stream.Stream;
import javax.annotation.Nullable;
/**
* Represents Axioms in
* the OWL 2 Specification.
* An OWL ontology contains a set of axioms. These axioms can be annotation
* axioms, declaration axioms, imports axioms or logical axioms
*
* @author Matthew Horridge, The University Of Manchester, Bio-Health
* Informatics Group
* @since 2.0.0
*/
public interface OWLAxiom extends OWLObject, HasAnnotations {
@Override
default int typeIndex() {
return 2000 + getAxiomType().getIndex();
}
/**
* @param visitor
* visitor to accept
*/
void accept(OWLAxiomVisitor visitor);
/**
* @param visitor
* visitor to accept
* @param
* visitor return type
* @return visitor value
*/
O accept(OWLAxiomVisitorEx visitor);
/**
* Gets an axiom that is structurally equivalent to this axiom without
* annotations. This essentially returns a version of this axiom stripped of
* any annotations.
*
* @return The annotationless version of this axiom
*/
T getAxiomWithoutAnnotations();
/**
* Gets an axiom that is structurally equivalent to the input axiom without
* annotations. This essentially returns a version of the axiom stripped of
* any annotations.
*
* @param axiom
* axiom to divest of annotations
* @return The annotationless version of the axiom
*/
static T getAxiomWithoutAnnotations(T axiom) {
return axiom.getAxiomWithoutAnnotations((Class) axiom.getClass());
}
/**
* Gets an axiom that is structurally equivalent to this axiom without
* annotations. This essentially returns a version of this axiom stripped of
* any annotations.
*
* Calling {@code axiom.getAxiomWithoutAnnotations(axiom.getClass())} is
* equivalent to {@code axiom.getAxiomWithoutAnnotations()}, but it provides
* compile time type safety - there will be no attempt to cast to an
* incompatible type.
*
* @param witness
* Variable to ground the generic return type
* @return The annotationless version of this axiom
*/
default T getAxiomWithoutAnnotations(@SuppressWarnings("unused") Class witness) {
return (T) getAxiomWithoutAnnotations();
}
/**
* Gets a copy of the input axiom that is annotated with the specified
* annotations. If the axiom has any annotations on it they will be merged
* with the specified set of annotations. Note that the input axiom will not
* be modified (or removed from any ontologies).
*
* @param axiom
* axiom to be copied
* @param annotations
* The annotations that will be added to existing annotations to
* annotate the copy of this axiom
* @param
* type of axiom returned
* @return A copy of this axiom that has the specified annotations plus any
* existing annotations returned by the
* {@code OWLAxiom#getAnnotations()} method.
*/
static T getAnnotatedAxiom(Stream annotations, T axiom) {
return axiom.getAnnotatedAxiom((Class) axiom.getClass(), annotations);
}
/**
* Gets a copy of the input axiom that is annotated with the specified
* annotations. If the axiom has any annotations on it they will be merged
* with the specified set of annotations. Note that the input axiom will not
* be modified (or removed from any ontologies).
*
* @param axiom
* axiom to be copied
* @param annotations
* The annotations that will be added to existing annotations to
* annotate the copy of this axiom
* @param
* type of axiom returned
* @return A copy of this axiom that has the specified annotations plus any
* existing annotations returned by the
* {@code OWLAxiom#getAnnotations()} method.
*/
static T getAnnotatedAxiom(Collection annotations, T axiom) {
return getAnnotatedAxiom(annotations.stream(), axiom);
}
/**
* Gets a copy of this axiom that is annotated with the specified
* annotations. If this axiom has any annotations on it they will be merged
* with the specified set of annotations. Note that this axiom will not be
* modified (or removed from any ontologies).
*
* Calling {@code axiom.getAnnotatedAxiom(axiom.getClass(), annotations)} is
* equivalent to {@code axiom.getAnnotatedAxiom(annotations)}, but it
* provides compile time type safety - there will be no attempt to cast to
* an incompatible type.
*
* @param witness
* Variable to ground the generic return type
* @param annotations
* The annotations that will be added to existing annotations to
* annotate the copy of this axiom
* @return A copy of this axiom that has the specified annotations plus any
* existing annotations returned by the
* {@code OWLAxiom#getAnnotations()} method.
*/
default T getAnnotatedAxiom(Class witness, Stream annotations) {
return (T) getAnnotatedAxiom(annotations);
}
/**
* Gets a copy of this axiom that is annotated with the specified
* annotations. If this axiom has any annotations on it they will be merged
* with the specified set of annotations. Note that this axiom will not be
* modified (or removed from any ontologies).
*
* @param annotations
* The annotations that will be added to existing annotations to
* annotate the copy of this axiom
* @return A copy of this axiom that has the specified annotations plus any
* existing annotations returned by the
* {@code OWLAxiom#getAnnotations()} method.
*/
T getAnnotatedAxiom(Stream annotations);
/**
* Gets a copy of this axiom that is annotated with the specified
* annotations. If this axiom has any annotations on it they will be merged
* with the specified set of annotations. Note that this axiom will not be
* modified (or removed from any ontologies).
*
* @param annotations
* The annotations that will be added to existing annotations to
* annotate the copy of this axiom
* @return A copy of this axiom that has the specified annotations plus any
* existing annotations returned by the
* {@code OWLAxiom#getAnnotations()} method.
*/
default T getAnnotatedAxiom(Collection annotations) {
return getAnnotatedAxiom(annotations.stream());
}
/**
* Determines if another axiom is equal to this axiom not taking into
* consideration the annotations on the axiom
*
* @param axiom
* The axiom to test if equal
* @return {@code true} if {@code axiom} without annotations is equal to
* this axiom without annotations otherwise {@code false}.
*/
default boolean equalsIgnoreAnnotations(@Nullable OWLAxiom axiom) {
if (axiom == null) {
return false;
}
if (this == axiom) {
return true;
}
if (typeIndex() != axiom.typeIndex()) {
return false;
}
return equalStreams(componentsWithoutAnnotations(), axiom.componentsWithoutAnnotations());
}
/**
* Determines if this axiom is a logical axiom. Logical axioms are defined
* to be axioms other than both declaration axioms (including imports
* declarations) and annotation axioms.
*
* @return {@code true} if the axiom is a logical axiom, {@code false} if
* the axiom is not a logical axiom.
*/
default boolean isLogicalAxiom() {
return false;
}
/**
* Determines if this axioms in an annotation axiom (an instance of
* {@code OWLAnnotationAxiom})
*
* @return {@code true} if this axiom is an instance of
* {@code OWLAnnotationAxiom}, otherwise {@code false}.
* @since 3.2
*/
default boolean isAnnotationAxiom() {
return false;
}
/**
* Determines if this axiom has any annotations on it
*
* @return {@code true} if this axiom has annotations on it, otherwise
* {@code false}
*/
boolean isAnnotated();
/**
* Gets the axiom type for this axiom.
*
* @return The axiom type that corresponds to the type of this axiom.
*/
AxiomType getAxiomType();
/**
* Determines if this axiom is one of the specified types
*
* @param axiomTypes
* The axiom types to check for
* @return {@code true} if this axiom is one of the specified types,
* otherwise {@code false}
* @since 3.0
*/
default boolean isOfType(AxiomType... axiomTypes) {
return isOfType(Arrays.stream(axiomTypes));
}
/**
* Determines if this axiom is one of the specified types
*
* @param types
* The axiom types to check for
* @return {@code true} if this axioms is one of the specified types,
* otherwise {@code false}
* @since 3.0
*/
default boolean isOfType(Collection> types) {
return types.contains(getAxiomType());
}
/**
* Determines if this axiom is one of the specified types
*
* @param types
* The axiom types to check for
* @return {@code true} if this axioms is one of the specified types,
* otherwise {@code false}
* @since 3.0
*/
default boolean isOfType(Stream> types) {
return types.anyMatch(getAxiomType()::equals);
}
/**
* Gets this axioms in negation normal form. i.e. any class expressions
* involved in this axiom are converted into negation normal form.
*
* @return The axiom in negation normal form.
*/
OWLAxiom getNNF();
}
