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EntityDeconstructor.java
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EntityDeconstructor.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.EntityType;
import cz.cvut.kbss.jopa.model.metamodel.FieldSpecification;
import cz.cvut.kbss.jopa.oom.exceptions.EntityDeconstructionException;
import cz.cvut.kbss.ontodriver.model.NamedResource;
import java.lang.reflect.Field;
import java.net.URI;
class EntityDeconstructor {
private final EntityMappingHelper mapper;
private ReferenceSavingResolver referenceSavingResolver;
EntityDeconstructor(ObjectOntologyMapperImpl mapper) {
this.mapper = mapper;
}
void setReferenceSavingResolver(ReferenceSavingResolver referenceSavingResolver) {
this.referenceSavingResolver = referenceSavingResolver;
}
<T> AxiomValueGatherer mapEntityToAxioms(URI identifier, T entity, EntityType<T> et,
Descriptor descriptor) {
assert identifier != null;
final AxiomValueGatherer valueBuilder = createAxiomValueBuilder(identifier, descriptor);
try {
for (FieldSpecification<? super T, ?> att : et.getFieldSpecifications()) {
addAssertions(entity, et, att, descriptor, valueBuilder);
}
} catch (IllegalArgumentException | IllegalAccessException e) {
throw new EntityDeconstructionException(e);
}
return valueBuilder;
}
private static AxiomValueGatherer createAxiomValueBuilder(URI primaryKey, Descriptor descriptor) {
return new AxiomValueGatherer(NamedResource.create(primaryKey), descriptor.getContext());
}
private <T> void addAssertions(T entity, EntityType<T> et,
FieldSpecification<? super T, ?> fieldSpec, Descriptor entityDescriptor,
final AxiomValueGatherer valueBuilder) throws IllegalAccessException {
final FieldStrategy<? extends FieldSpecification<? super T, ?>, T> fs = FieldStrategy
.createFieldStrategy(et, fieldSpec, entityDescriptor.getAttributeDescriptor(fieldSpec), mapper);
fs.setReferenceSavingResolver(referenceSavingResolver);
fs.buildAxiomValuesFromInstance(entity, valueBuilder);
}
<T> AxiomValueGatherer mapFieldToAxioms(URI primaryKey, T entity, Field field, EntityType<T> et,
Descriptor descriptor) {
final FieldSpecification<? super T, ?> fieldSpec = et
.getFieldSpecification(field.getName());
final AxiomValueGatherer valueBuilder = createAxiomValueBuilder(primaryKey, descriptor);
try {
addAssertions(entity, et, fieldSpec, descriptor, valueBuilder);
} catch (IllegalAccessException e) {
throw new EntityDeconstructionException(e);
}
return valueBuilder;
}
}