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SingularMultilingualStringFieldStrategy.java
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SingularMultilingualStringFieldStrategy.java
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package cz.cvut.kbss.jopa.oom;
import cz.cvut.kbss.jopa.exceptions.CardinalityConstraintViolatedException;
import cz.cvut.kbss.jopa.model.MultilingualString;
import cz.cvut.kbss.jopa.model.descriptors.Descriptor;
import cz.cvut.kbss.jopa.model.metamodel.AbstractAttribute;
import cz.cvut.kbss.jopa.model.metamodel.EntityType;
import cz.cvut.kbss.ontodriver.model.Axiom;
import cz.cvut.kbss.ontodriver.model.LangString;
import cz.cvut.kbss.ontodriver.model.NamedResource;
import cz.cvut.kbss.ontodriver.model.Value;
class SingularMultilingualStringFieldStrategy<X>
extends DataPropertyFieldStrategy<AbstractAttribute<? super X, MultilingualString>, X> {
private MultilingualString value;
SingularMultilingualStringFieldStrategy(EntityType<X> et, AbstractAttribute<? super X, MultilingualString> att,
Descriptor entityDescriptor, EntityMappingHelper mapper) {
super(et, att, entityDescriptor, mapper);
}
@Override
void addValueFromAxiom(Axiom<?> ax) {
if (value == null) {
this.value = new MultilingualString();
}
final Value<?> axiomValue = ax.getValue();
if (axiomValue.getValue() instanceof LangString) {
final LangString lsAxiomValue = (LangString) axiomValue.getValue();
verifyCardinality(lsAxiomValue.getLanguage().orElse(null), ax.getSubject());
value.set(lsAxiomValue.getValue(), lsAxiomValue.getLanguage().orElse(null));
} else {
value.set(axiomValue.stringValue());
}
}
private void verifyCardinality(String language, NamedResource subject) {
if (language != null && value.contains(language)) {
throw new CardinalityConstraintViolatedException(String.format(
"Expected single value with language tag %s of attribute %s of instance <%s>, but got multiple.",
language, attribute.getName(), subject));
} else if (language == null && value.containsSimple()) {
throw new CardinalityConstraintViolatedException(String.format(
"Expected single simple literal value of attribute %s of instance <%s>, but got multiple.",
attribute.getName(), subject));
}
}
@Override
void buildInstanceFieldValue(Object instance) {
setValueOnInstance(instance, value);
}
@Override
void buildAxiomValuesFromInstance(X instance, AxiomValueGatherer valueBuilder)
throws IllegalAccessException {
}
}