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package tools.refinery.store.query.term;
import tools.refinery.store.query.equality.LiteralEqualityHelper;
import tools.refinery.store.query.substitution.Substitution;
import tools.refinery.store.query.valuation.Valuation;
import java.util.Objects;
import java.util.Set;
public abstract class UnaryTerm<R, T> implements Term<R> {
private final Term<T> body;
protected UnaryTerm(Term<T> body) {
if (!body.getType().equals(getBodyType())) {
throw new IllegalArgumentException("Expected body %s to be of type %s, got %s instead".formatted(body,
getBodyType().getName(), body.getType().getName()));
}
this.body = body;
}
public abstract Class<T> getBodyType();
public Term<T> getBody() {
return body;
}
@Override
public R evaluate(Valuation valuation) {
var bodyValue = body.evaluate(valuation);
return bodyValue == null ? null : doEvaluate(bodyValue);
}
protected abstract R doEvaluate(T bodyValue);
@Override
public boolean equalsWithSubstitution(LiteralEqualityHelper helper, AnyTerm other) {
if (getClass() != other.getClass()) {
return false;
}
var otherUnaryTerm = (UnaryTerm<?, ?>) other;
return body.equalsWithSubstitution(helper, otherUnaryTerm.body);
}
@Override
public Term<R> substitute(Substitution substitution) {
return doSubstitute(substitution, body.substitute(substitution));
}
protected abstract Term<R> doSubstitute(Substitution substitution, Term<T> substitutedBody);
@Override
public Set<AnyDataVariable> getInputVariables() {
return body.getInputVariables();
}
@Override
public boolean equals(Object o) {
if (this == o) return true;
if (o == null || getClass() != o.getClass()) return false;
UnaryTerm<?, ?> unaryTerm = (UnaryTerm<?, ?>) o;
return body.equals(unaryTerm.body);
}
@Override
public int hashCode() {
return Objects.hash(getClass(), body);
}
}
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