package org.springframework.data.jpa.repository.query;
import static org.hamcrest.Matchers.*;
import static org.junit.Assert.*;
import java.lang.reflect.Method;
import javax.persistence.EntityManager;
import javax.persistence.PersistenceContext;
import javax.persistence.criteria.ParameterExpression;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.data.jpa.domain.sample.User;
import org.springframework.data.repository.query.DefaultParameters;
import org.springframework.data.repository.query.Parameters;
import org.springframework.data.repository.query.ParametersParameterAccessor;
import org.springframework.data.repository.query.parser.Part;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
/**
* Integration tests for {@link ParameterMetadataProvider}.
*
* @author Oliver Gierke
*/
@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration("classpath:infrastructure.xml")
public class ParameterExpressionProviderTests {
@PersistenceContext EntityManager em;
/**
* @see DATADOC-99
*/
@Test
@SuppressWarnings("rawtypes")
public void createsParameterExpressionWithMostConcreteType() throws Exception {
Method method = SampleRepository.class.getMethod("findByIdGreaterThan", int.class);
Parameters<?, ?> parameters = new DefaultParameters(method);
ParametersParameterAccessor accessor = new ParametersParameterAccessor(parameters, new Object[] { 1 });
Part part = new Part("IdGreaterThan", User.class);
ParameterMetadataProvider provider = new ParameterMetadataProvider(em.getCriteriaBuilder(), accessor);
ParameterExpression<? extends Comparable> expression = provider.next(part, Comparable.class).getExpression();
assertThat(expression.getParameterType(), is(typeCompatibleWith(int.class)));
}
interface SampleRepository {
User findByIdGreaterThan(int id);
}
}