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MetamodelImplInheritanceTest.java
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MetamodelImplInheritanceTest.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.model;
import cz.cvut.kbss.jopa.environment.*;
import cz.cvut.kbss.jopa.exception.MetamodelInitializationException;
import cz.cvut.kbss.jopa.loaders.PersistenceUnitClassFinder;
import cz.cvut.kbss.jopa.model.annotations.*;
import cz.cvut.kbss.jopa.model.metamodel.*;
import cz.cvut.kbss.jopa.utils.Configuration;
import cz.cvut.kbss.jopa.utils.Constants;
import org.junit.jupiter.api.BeforeEach;
import org.junit.jupiter.api.Test;
import org.mockito.Mock;
import org.mockito.MockitoAnnotations;
import java.lang.reflect.Field;
import java.net.URI;
import java.util.*;
import static org.junit.jupiter.api.Assertions.*;
import static org.mockito.Mockito.when;
class MetamodelImplInheritanceTest {
private static final Map<String, String> PROPERTIES = Collections
.singletonMap(JOPAPersistenceProperties.SCAN_PACKAGE, "cz.cvut.kbss.jopa");
@Mock
private PersistenceUnitClassFinder classFinderMock;
private final Configuration conf = new Configuration(PROPERTIES);
@BeforeEach
void setUp() {
MockitoAnnotations.openMocks(this);
}
@Test
void buildsEntityTypeForClassWithMappedSuperclass() {
final MetamodelImpl metamodel = metamodelFor(OWLClassQ.class);
final EntityType<OWLClassQ> et = metamodel.entity(OWLClassQ.class);
assertNotNull(et);
assertEquals(OWLClassQ.getClassIri(), et.getIRI().toString());
}
private MetamodelImpl metamodelFor(Class<?>... classes) {
when(classFinderMock.getEntities()).thenReturn(new HashSet<>(Arrays.asList(classes)));
final MetamodelImpl metamodel = new MetamodelImpl(conf);
metamodel.build(classFinderMock);
return metamodel;
}
@Test
void entityWithMappedSuperclassIsBuiltWithAllRelevantFields() throws Exception {
final MetamodelImpl metamodel = metamodelFor(OWLClassQ.class);
final EntityType<OWLClassQ> et = metamodel.entity(OWLClassQ.class);
assertNotNull(et.getIdentifier());
assertEquals(OWLClassQ.getUriField(), et.getIdentifier().getJavaField());
final List<Field> fields = Arrays.asList(OWLClassQ.getOwlClassAField(), OWLClassQ.getLabelField(),
OWLClassQ.getParentStringField(), OWLClassQ.getStringAttributeField());
for (Field f : fields) {
assertNotNull(et.getFieldSpecification(f.getName()));
assertEquals(f, et.getFieldSpecification(f.getName()).getJavaField());
}
}
@Test
void entityWithMappedSuperclassSetsEntityTypeSupertype() {
final MetamodelImpl metamodel = metamodelFor(OWLClassQ.class);
final EntityType<OWLClassQ> et = metamodel.entity(OWLClassQ.class);
final IdentifiableType<? super OWLClassQ> supertype = et.getSupertype();
assertEquals(QMappedSuperclass.class, supertype.getJavaType());
}
@Test
void entityWithAbstractEntityParentSetsEntityTypeSupertype() {
final MetamodelImpl metamodel = metamodelFor(OWLClassR.class, OWLClassS.class);
final EntityType<OWLClassR> etR = metamodel.entity(OWLClassR.class);
assertNotNull(etR);
final EntityType<OWLClassS> etS = metamodel.entity(OWLClassS.class);
assertNotNull(etS);
assertEquals(etS, etR.getSupertype());
}
@Test
void entityWithEntitySuperclassIsBuiltWithAllRelevantAttributes() throws Exception {
final MetamodelImpl metamodel = metamodelFor(OWLClassR.class, OWLClassS.class);
final List<Field> fields = Arrays
.asList(OWLClassS.getNameField(), OWLClassR.getOwlClassAField(), OWLClassR.getStringAttField());
final EntityType<OWLClassR> et = metamodel.entity(OWLClassR.class);
for (Field f : fields) {
final Attribute<? super OWLClassR, ?> att = et.getAttribute(f.getName());
assertNotNull(att);
assertEquals(f, att.getJavaField());
}
assertNotNull(et.getIdentifier());
assertEquals(OWLClassS.getUriField(), et.getIdentifier().getJavaField());
}
@Test
void buildingMetamodelSetsSubtypesOfMappedSuperclass() {
final MetamodelImpl metamodel = metamodelFor(OWLClassQ.class);
final IdentifiableType<? super OWLClassQ> supertype = metamodel.entity(OWLClassQ.class).getSupertype();
assertTrue(supertype instanceof AbstractIdentifiableType);
final AbstractIdentifiableType<? super OWLClassQ> mappedSupertype = (AbstractIdentifiableType<? super OWLClassQ>) supertype;
assertTrue(mappedSupertype.hasSubtypes());
assertTrue(mappedSupertype.getSubtypes().contains(metamodel.entity(OWLClassQ.class)));
}
@Test
void buildingMetamodelSetsSubtypesOfEntitySuperclass() {
final MetamodelImpl metamodel = metamodelFor(OWLClassR.class, OWLClassS.class);
final EntityTypeImpl<OWLClassS> supertype = metamodel.entity(OWLClassS.class);
assertTrue(supertype.hasSubtypes());
assertTrue(supertype.getSubtypes().contains(metamodel.entity(OWLClassR.class)));
}
@Test
void subtypesOfEntityWithoutSubtypesAreEmpty() {
final MetamodelImpl metamodel = metamodelFor(OWLClassA.class);
final EntityTypeImpl<OWLClassA> et = metamodel.entity(OWLClassA.class);
assertFalse(et.hasSubtypes());
assertTrue(et.getSubtypes().isEmpty());
}
@Test
void buildingMetamodelResolvesInheritanceStrategy() {
final MetamodelImpl metamodel = metamodelFor(OWLClassR.class, OWLClassS.class);
final Inheritance inheritance = OWLClassS.class.getDeclaredAnnotation(Inheritance.class);
final EntityTypeImpl<OWLClassS> sEntityType = metamodel.entity(OWLClassS.class);
assertEquals(inheritance.strategy(), sEntityType.getInheritanceType());
final EntityTypeImpl<OWLClassR> rEntityType = metamodel.entity(OWLClassR.class);
assertEquals(inheritance.strategy(), rEntityType.getInheritanceType());
}
@Test
void buildingMetamodelSetsDefaultInheritanceStrategyWhenItIsNotSpecifiedOnEntity() {
final MetamodelImpl metamodel = metamodelFor(OWLClassA.class);
final EntityTypeImpl<OWLClassA> et = metamodel.entity(OWLClassA.class);
assertEquals(Constants.DEFAULT_INHERITANCE_TYPE, et.getInheritanceType());
}
@Test
void buildingMetamodelThrowsExceptionWhenInheritanceStrategyIsDeclaredOnSubtype() {
final MetamodelInitializationException ex = assertThrows(MetamodelInitializationException.class,
() -> metamodelFor(OWLClassS.class, SubclassWithInheritanceType.class));
assertEquals("Class " + SubclassWithInheritanceType.class +
" cannot declare inheritance strategy, because it already inherits it from its supertype.",
ex.getMessage());
}
@Inheritance(strategy = InheritanceType.TRY_FIRST)
@OWLClass(iri = "http://krizik.felk.cvut.cz/ontologies/jopa/entities#SubclassWithInheritanceType")
private static final class SubclassWithInheritanceType extends OWLClassS {
}
@Test
void buildingMetamodelSetsMultipleSubtypesOnSuperType() {
final MetamodelImpl metamodel = metamodelFor(OWLClassR.class, AnotherSubclass.class, OWLClassS.class);
final EntityTypeImpl<OWLClassS> supertype = metamodel.entity(OWLClassS.class);
assertEquals(2, supertype.getSubtypes().size());
assertTrue(supertype.getSubtypes().contains(metamodel.entity(OWLClassR.class)));
assertTrue(supertype.getSubtypes().contains(metamodel.entity(AnotherSubclass.class)));
}
@OWLClass(iri = Vocabulary.CLASS_BASE + "AnotherSubtype")
private static class AnotherSubclass extends OWLClassS {
}
/**
* Ref.: https://github.com/kbss-cvut/jopa/issues/3
*/
@Test
void buildingMetamodelSupportsReferenceFromParentEntityToSubEntity() {
final MetamodelImpl metamodel = metamodelFor(AnotherChildWithCircular.class);
final EntityType<ChildWithCircular> et = metamodel.entity(ChildWithCircular.class);
assertNotNull(et);
assertNotNull(et.getIdentifier());
}
@MappedSuperclass
private static class ParentWithId {
@Id
private URI id;
}
@MappedSuperclass
private static class ParentWithCircular extends ParentWithId {
@OWLObjectProperty(iri = Vocabulary.ATTRIBUTE_BASE + "hasChild")
private Set<ChildWithCircular> children;
}
@OWLClass(iri = Vocabulary.CLASS_BASE + "ChildWithCircular")
private static class ChildWithCircular extends ParentWithCircular {
}
@OWLClass(iri = Vocabulary.CLASS_BASE + "AnotherChildWithCircular")
private static class AnotherChildWithCircular extends ParentWithCircular {
}
}