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ResultSetMappingProcessorTest.java
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ResultSetMappingProcessorTest.java
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/**
* Copyright (C) 2016 Czech Technical University in Prague
* <p>
* 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.
* <p>
* 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.query.mapper;
import cz.cvut.kbss.jopa.environment.OWLClassA;
import cz.cvut.kbss.jopa.exception.SparqlResultMappingException;
import cz.cvut.kbss.jopa.model.annotations.*;
import cz.cvut.kbss.jopa.model.metamodel.EntityTypeImpl;
import cz.cvut.kbss.jopa.model.metamodel.FieldSpecification;
import cz.cvut.kbss.jopa.model.metamodel.Identifier;
import cz.cvut.kbss.jopa.model.metamodel.MetamodelBuilder;
import cz.cvut.kbss.jopa.query.ResultSetMappingManager;
import org.junit.Before;
import org.junit.Rule;
import org.junit.Test;
import org.junit.rules.ExpectedException;
import org.mockito.Mock;
import org.mockito.MockitoAnnotations;
import java.net.URI;
import java.util.List;
import static org.junit.Assert.*;
import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.when;
public class ResultSetMappingProcessorTest {
private static final String MAPPING_NAME = "testMapping";
@Rule
public ExpectedException thrown = ExpectedException.none();
@Mock
private MetamodelBuilder builderMock;
private ResultSetMappingProcessor processor;
@Before
public void setUp() {
MockitoAnnotations.initMocks(this);
this.processor = new ResultSetMappingProcessor(builderMock);
}
@Test
public void buildMapperCreatesRowMapperWithVariableMappersConfiguredInMappingAnnotation() throws Exception {
processor.buildMapper(getMapping(WithVariableMapping.class));
final ResultSetMappingManager manager = processor.getManager();
final SparqlResultMapper mapper = manager.getMapper(MAPPING_NAME);
assertNotNull(mapper);
final ResultRowMapper rowMapper = (ResultRowMapper) mapper;
assertEquals(MAPPING_NAME, rowMapper.getName());
final List<SparqlResultMapper> rowMappers = rowMapper.getRowMappers();
assertEquals(2, rowMappers.size());
assertTrue(rowMappers.get(0) instanceof VariableResultMapper);
assertEquals("x", ((VariableResultMapper) rowMappers.get(0)).getName());
assertEquals(void.class, ((VariableResultMapper) rowMappers.get(0)).getTargetType());
assertTrue(rowMappers.get(1) instanceof VariableResultMapper);
assertEquals("y", ((VariableResultMapper) rowMappers.get(1)).getName());
assertEquals(URI.class, ((VariableResultMapper) rowMappers.get(1)).getTargetType());
}
@SparqlResultSetMapping(name = MAPPING_NAME, variables = {
@VariableResult(name = "x"),
@VariableResult(name = "y", type = URI.class)
})
private static final class WithVariableMapping {
}
private static SparqlResultSetMapping getMapping(Class<?> cls) {
return cls.getDeclaredAnnotation(SparqlResultSetMapping.class);
}
@Test
public void buildMapperBuildsEmptyMapperFromEmptyMappingConfiguration() {
processor.buildMapper(getMapping(EmptyMapping.class));
final ResultSetMappingManager manager = processor.getManager();
final SparqlResultMapper mapper = manager.getMapper(MAPPING_NAME);
assertNotNull(mapper);
final ResultRowMapper rowMapper = (ResultRowMapper) mapper;
assertEquals(MAPPING_NAME, rowMapper.getName());
assertTrue(rowMapper.getRowMappers().isEmpty());
}
@SparqlResultSetMapping(name = MAPPING_NAME)
private static final class EmptyMapping {
}
@Test
public void buildMapperCreatesConstructorResultMapperWithCorrespondingVariableMappersForParameters() {
processor.buildMapper(getMapping(WithConstructorMapping.class));
final ResultSetMappingManager manager = processor.getManager();
final SparqlResultMapper mapper = manager.getMapper(MAPPING_NAME);
final ResultRowMapper rowMapper = (ResultRowMapper) mapper;
assertEquals(1, rowMapper.getRowMappers().size());
final ConstructorResultMapper ctorMapper = (ConstructorResultMapper) rowMapper.getRowMappers().get(0);
assertNotNull(ctorMapper);
assertEquals(OWLClassA.class, ctorMapper.getTargetType());
assertEquals(3, ctorMapper.getParamMappers().size());
assertEquals("uri", ctorMapper.getParamMappers().get(0).getName());
assertEquals(String.class, ctorMapper.getParamMappers().get(0).getTargetType());
assertEquals("label", ctorMapper.getParamMappers().get(1).getName());
assertEquals(void.class, ctorMapper.getParamMappers().get(1).getTargetType());
assertEquals("comment", ctorMapper.getParamMappers().get(2).getName());
assertEquals(void.class, ctorMapper.getParamMappers().get(2).getTargetType());
}
@SparqlResultSetMapping(name = MAPPING_NAME, classes = {
@ConstructorResult(targetClass = OWLClassA.class, variables = {
@VariableResult(name = "uri", type = String.class),
@VariableResult(name = "label"),
@VariableResult(name = "comment")
})
})
private static final class WithConstructorMapping {
}
@Test
public void buildMapperCreatesEntityResultMapperWhenAllFieldMappingsAreSpecified() throws Exception {
final EntityTypeImpl<OWLClassA> etA = mock(EntityTypeImpl.class);
when(builderMock.entity(OWLClassA.class)).thenReturn(etA);
final FieldSpecification idField = mock(Identifier.class);
when(etA.getFieldSpecification("uri")).thenReturn(idField);
final FieldSpecification stringField = mock(FieldSpecification.class);
when(etA.getFieldSpecification(OWLClassA.getStrAttField().getName())).thenReturn(stringField);
final SparqlResultSetMapping mapping = getMapping(WithEntityMapping.class);
processor.buildMapper(mapping);
final ResultSetMappingManager manager = processor.getManager();
final SparqlResultMapper mapper = manager.getMapper(MAPPING_NAME);
final ResultRowMapper rowMapper = (ResultRowMapper) mapper;
assertEquals(1, rowMapper.getRowMappers().size());
assertTrue(rowMapper.getRowMappers().get(0) instanceof EntityResultMapper);
final EntityResultMapper<OWLClassA> etMapper = (EntityResultMapper<OWLClassA>) rowMapper.getRowMappers().get(0);
assertEquals(2, etMapper.getFieldMappers().size());
assertEquals(etA, etMapper.getEntityType());
final FieldResultMapper uriMapper = etMapper.getFieldMappers().get(0);
assertEquals("id", uriMapper.getVariableName());
assertEquals(idField, uriMapper.getFieldSpecification());
final FieldResultMapper stringMapper = etMapper.getFieldMappers().get(1);
assertEquals(stringField, stringMapper.getFieldSpecification());
assertEquals("label", stringMapper.getVariableName());
}
@SparqlResultSetMapping(name = MAPPING_NAME, entities = {
@EntityResult(entityClass = OWLClassA.class, fields = {
@FieldResult(name = "uri", variable = "id"),
@FieldResult(name = "stringAttribute", variable = "label")
})
})
private static final class WithEntityMapping {
}
@Test
public void buildMapperThrowsMappingExceptionWhenMappedFieldDoesNotExist() {
final EntityTypeImpl<OWLClassA> etA = mock(EntityTypeImpl.class);
when(builderMock.entity(OWLClassA.class)).thenReturn(etA);
final FieldSpecification idField = mock(Identifier.class);
when(etA.getFieldSpecification("uri")).thenReturn(idField);
final String msg = "Unknown field stringAttribute.";
when(etA.getFieldSpecification("stringAttribute")).thenThrow(new IllegalArgumentException(msg));
thrown.expect(SparqlResultMappingException.class);
thrown.expectMessage(msg);
final SparqlResultSetMapping mapping = getMapping(WithEntityMapping.class);
processor.buildMapper(mapping);
}
@Test
public void buildMapperThrowsMappingExceptionWhenEntityMappingTargetClassIsNotEntity() {
when(builderMock.entity(OWLClassA.class)).thenReturn(null);
thrown.expect(SparqlResultMappingException.class);
thrown.expectMessage("Type " + OWLClassA.class +
" is not a known entity type and cannot be used as @EntityResult target class.");
processor.buildMapper(getMapping(WithEntityMapping.class));
}
}