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/*
* SPDX-FileCopyrightText: 2023 The Refinery Authors <https://refinery.tools/>
*
* SPDX-License-Identifier: EPL-2.0
*/
package tools.refinery.store.reasoning.translator.containment;
import tools.refinery.store.reasoning.representation.PartialRelation;
import tools.refinery.logic.term.truthvalue.TruthValue;
import java.util.Objects;
import java.util.Set;
final class InferredContainment {
public static final InferredContainment UNKNOWN = new InferredContainment(
TruthValue.UNKNOWN, Set.of(), Set.of());
private final TruthValue contains;
private final Set<PartialRelation> mustLinks;
private final Set<PartialRelation> forbiddenLinks;
private final int hashCode;
public InferredContainment(TruthValue contains, Set<PartialRelation> mustLinks,
Set<PartialRelation> forbiddenLinks) {
this.contains = adjustContains(contains, mustLinks, forbiddenLinks);
this.mustLinks = mustLinks;
this.forbiddenLinks = forbiddenLinks;
hashCode = Objects.hash(this.contains, mustLinks, forbiddenLinks);
}
private static TruthValue adjustContains(TruthValue contains, Set<PartialRelation> mustLinks,
Set<PartialRelation> forbiddenLinks) {
var result = contains;
if (!mustLinks.isEmpty()) {
result = result.merge(TruthValue.TRUE);
}
boolean hasErrorLink = mustLinks.stream().anyMatch(forbiddenLinks::contains);
if (mustLinks.size() >= 2 || hasErrorLink) {
result = result.merge(TruthValue.ERROR);
}
return result;
}
public TruthValue contains() {
return contains;
}
public Set<PartialRelation> mustLinks() {
return mustLinks;
}
public Set<PartialRelation> forbiddenLinks() {
return forbiddenLinks;
}
@Override
public boolean equals(Object obj) {
if (obj == this) return true;
if (obj == null || obj.getClass() != this.getClass()) return false;
var that = (InferredContainment) obj;
return Objects.equals(this.contains, that.contains) &&
Objects.equals(this.mustLinks, that.mustLinks) &&
Objects.equals(this.forbiddenLinks, that.forbiddenLinks);
}
@Override
public int hashCode() {
return hashCode;
}
@Override
public String toString() {
return "InferredContainment[" +
"contains=" + contains + ", " +
"mustLinks=" + mustLinks + ", " +
"forbiddenLinks=" + forbiddenLinks + ']';
}
}
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