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SimpleSetPropertyStrategy.java
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SimpleSetPropertyStrategy.java
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/**
* Copyright (C) 2020 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.jopa.oom;
import cz.cvut.kbss.jopa.model.descriptors.Descriptor;
import cz.cvut.kbss.jopa.model.metamodel.AbstractPluralAttribute;
import cz.cvut.kbss.jopa.model.metamodel.EntityType;
import cz.cvut.kbss.jopa.utils.EntityPropertiesUtils;
import cz.cvut.kbss.jopa.utils.IdentifierTransformer;
import cz.cvut.kbss.ontodriver.model.NamedResource;
import cz.cvut.kbss.ontodriver.model.Value;
import java.net.URI;
import java.util.Collection;
import java.util.HashSet;
import java.util.Objects;
import java.util.Set;
class SimpleSetPropertyStrategy<X> extends PluralObjectPropertyStrategy<AbstractPluralAttribute<? super X, ?, ?>, X> {
SimpleSetPropertyStrategy(EntityType<X> et, AbstractPluralAttribute<? super X, ?, ?> att, Descriptor descriptor,
EntityMappingHelper mapper) {
super(et, att, descriptor, mapper);
}
@Override
void buildAxiomValuesFromInstance(X instance, AxiomValueGatherer valueBuilder) {
final Object value = extractFieldValueFromInstance(instance);
assert value instanceof Collection || value == null;
final Collection<?> valueCollection = (Collection<?>) value;
extractValues(valueCollection, valueBuilder);
}
private <T> void extractValues(Collection<T> valueCollection, AxiomValueGatherer valueBuilder) {
if (valueCollection == null) {
valueBuilder.addValue(createAssertion(), Value.nullValue(), getAttributeWriteContext());
return;
}
final Set<Value<?>> assertionValues = new HashSet<>(valueCollection.size());
if (IdentifierTransformer.isValidIdentifierType(attribute.getBindableJavaType())) {
valueCollection.stream().filter(Objects::nonNull).forEach(item -> assertionValues
.add(new Value<>(NamedResource.create(IdentifierTransformer.valueAsUri(item)))));
} else {
final EntityType<T> et = (EntityType<T>) mapper.getEntityType(attribute.getBindableJavaType());
for (T val : valueCollection) {
if (val == null) {
continue;
}
if (referenceSavingResolver.shouldSaveReferenceToItem(val, getAttributeValueContext())) {
final URI valId = EntityPropertiesUtils.getIdentifier(val, et);
assert valId != null;
assertionValues.add(new Value<>(NamedResource.create(valId)));
} else {
referenceSavingResolver
.registerPendingReference(valueBuilder.getSubjectIdentifier(), createAssertion(), val,
getAttributeWriteContext());
}
}
}
valueBuilder.addValues(createAssertion(), assertionValues, getAttributeWriteContext());
}
}