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SingularAnnotationPropertyStrategy.java
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SingularAnnotationPropertyStrategy.java
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/**
* Copyright (C) 2016 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.Attribute;
import cz.cvut.kbss.jopa.model.metamodel.EntityType;
import cz.cvut.kbss.jopa.utils.IdentifierTransformer;
import cz.cvut.kbss.ontodriver.model.Assertion;
import cz.cvut.kbss.ontodriver.model.Axiom;
import cz.cvut.kbss.ontodriver.model.NamedResource;
import cz.cvut.kbss.ontodriver.model.Value;
class SingularAnnotationPropertyStrategy<X> extends SingularDataPropertyStrategy<X> {
SingularAnnotationPropertyStrategy(EntityType<X> et, Attribute<? super X, ?> att, Descriptor descriptor,
EntityMappingHelper mapper) {
super(et, att, descriptor, mapper);
}
@Override
void addValueFromAxiom(Axiom<?> ax) {
final Value<?> val = ax.getValue();
if (!isValidRange(val.getValue())) {
return;
}
verifyCardinalityConstraint(ax.getSubject());
if (super.isValidRange(val.getValue())) {
this.value = val.getValue();
} else {
this.value = IdentifierTransformer.transformToIdentifier(val.getValue(), attribute.getJavaType());
}
}
@Override
boolean isValidRange(Object value) {
assert value != null;
return attribute.getJavaType().isAssignableFrom(value.getClass()) ||
value instanceof NamedResource && IdentifierTransformer.isValidIdentifierType(attribute.getJavaType());
}
@Override
void buildAxiomValuesFromInstance(X instance, AxiomValueGatherer valueBuilder) {
final Object value = extractFieldValueFromInstance(instance);
if (value == null) {
valueBuilder.addValue(createAssertion(), Value.nullValue(), getAttributeContext());
return;
}
if (IdentifierTransformer.isValidIdentifierType(attribute.getJavaType()) &&
!attribute.getJavaType().isAssignableFrom(String.class)) {
valueBuilder.addValue(createAssertion(),
new Value<>(NamedResource.create(IdentifierTransformer.valueAsUri(value))), getAttributeContext());
} else {
valueBuilder.addValue(createAssertion(), new Value<>(value), getAttributeContext());
}
}
@Override
Assertion createAssertion() {
return Assertion
.createAnnotationPropertyAssertion(attribute.getIRI().toURI(), getLanguage(), attribute.isInferred());
}
}