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AbstractAxiomDescriptor.java
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AbstractAxiomDescriptor.java
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/**
* Copyright (C) 2022 Czech Technical University in Prague
*
* 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/>.
*/
package cz.cvut.kbss.ontodriver.descriptor;
import cz.cvut.kbss.ontodriver.model.Assertion;
import cz.cvut.kbss.ontodriver.model.NamedResource;
import java.net.URI;
import java.util.Objects;
import java.util.Set;
/**
* Defines common API for axiom descriptors.
*/
public abstract class AbstractAxiomDescriptor {
private final NamedResource subject;
protected AbstractAxiomDescriptor(NamedResource subject) {
this.subject = Objects.requireNonNull(subject);
}
public NamedResource getSubject() {
return subject;
}
/**
* Gets the set of assertions in this descriptor.
*
* @return Set of assertions
*/
public abstract Set<Assertion> getAssertions();
/**
* Checks whether this descriptor contains the specified assertion.
*
* @param assertion Assertion to look for
* @return {@code boolean} result
*/
public abstract boolean containsAssertion(Assertion assertion);
/**
* Gets the set of repository context identifiers in which this descriptor's subject may be.
* <p>
* The contract of this method is as follows: it must not return {@code null}, if the the subject is in the default
* context, an empty set is returned.
*
* @return Set of context identifiers
*/
public abstract Set<URI> getSubjectContexts();
/**
* Gets the set of repository context identifiers in which the specified assertion values may be.
* <p>
* If no context was explicitly set, the same contexts as the subject's are returned. An empty result indicates that
* the default context should be used.
*
* @return Set of context identifiers
*/
public abstract Set<URI> getAssertionContexts(Assertion assertion);
@Override
public boolean equals(Object o) {
if (this == o) {
return true;
}
if (!(o instanceof AbstractAxiomDescriptor)) {
return false;
}
AbstractAxiomDescriptor that = (AbstractAxiomDescriptor) o;
return subject.equals(that.subject);
}
@Override
public int hashCode() {
return Objects.hash(subject);
}
}