/*
* Hibernate, Relational Persistence for Idiomatic Java
*
* Copyright (c) 2010, Red Hat Inc. or third-party contributors as
* indicated by the @author tags or express copyright attribution
* statements applied by the authors. All third-party contributions are
* distributed under license by Red Hat Inc.
*
* This copyrighted material is made available to anyone wishing to use, modify,
* copy, or redistribute it subject to the terms and conditions of the GNU
* Lesser General Public License, as published by the Free Software Foundation.
*
* 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 Lesser General Public License
* for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this distribution; if not, write to:
* Free Software Foundation, Inc.
* 51 Franklin Street, Fifth Floor
* Boston, MA 02110-1301 USA
*/
package org.hibernate.ejb.criteria.basic;
import java.math.BigDecimal;
import java.math.BigInteger;
import java.util.Collections;
import java.util.List;
import javax.persistence.EntityManager;
import javax.persistence.TypedQuery;
import javax.persistence.criteria.CriteriaBuilder;
import javax.persistence.criteria.CriteriaQuery;
import javax.persistence.criteria.Expression;
import javax.persistence.criteria.ParameterExpression;
import javax.persistence.criteria.Predicate;
import javax.persistence.criteria.Root;
import org.hibernate.Query;
import org.hibernate.ejb.metamodel.AbstractMetamodelSpecificTest;
import org.hibernate.ejb.metamodel.Phone;
import org.hibernate.ejb.metamodel.Product;
import org.hibernate.ejb.metamodel.Product_;
import org.hibernate.ejb.test.mapping.Phone_;
import org.hibernate.impl.AbstractQueryImpl;
/**
* Tests that various expressions operate as expected
*
* @author Steve Ebersole
*/
public class ExpressionsTest extends AbstractMetamodelSpecificTest {
private CriteriaBuilder builder;
@Override
public void setUp() throws Exception {
super.setUp();
builder = factory.getCriteriaBuilder();
EntityManager em = getOrCreateEntityManager();
em.getTransaction().begin();
Product product = new Product();
product.setId( "product1" );
product.setPrice( 1.23d );
product.setQuantity( 2 );
product.setPartNumber( ((long)Integer.MAX_VALUE) + 1 );
product.setRating( 1.999f );
product.setSomeBigInteger( BigInteger.valueOf( 987654321 ) );
product.setSomeBigDecimal( BigDecimal.valueOf( 987654.321 ) );
em.persist( product );
em.getTransaction().commit();
em.close();
}
public void testEmptyConjunction() {
EntityManager em = getOrCreateEntityManager();
em.getTransaction().begin();
CriteriaQuery<Product> criteria = builder.createQuery( Product.class );
criteria.from( Product.class );
criteria.where( builder.and() );
List<Product> result = em.createQuery( criteria ).getResultList();
assertEquals( 1, result.size() );
em.getTransaction().commit();
em.close();
}
public void testEmptyConjunctionIsTrue() {
EntityManager em = getOrCreateEntityManager();
em.getTransaction().begin();
CriteriaQuery<Product> criteria = builder.createQuery( Product.class );
criteria.from( Product.class );
criteria.where( builder.isTrue( builder.and() ) );
List<Product> result = em.createQuery( criteria ).getResultList();
assertEquals( 1, result.size() );
em.getTransaction().commit();
em.close();
}
public void testEmptyConjunctionIsFalse() {
EntityManager em = getOrCreateEntityManager();
em.getTransaction().begin();
CriteriaQuery<Product> criteria = builder.createQuery( Product.class );
criteria.from( Product.class );
criteria.where( builder.isFalse( builder.and() ) );
List<Product> result = em.createQuery( criteria ).getResultList();
assertEquals( 0, result.size() );
em.getTransaction().commit();
em.close();
}
public void testEmptyDisjunction() {
EntityManager em = getOrCreateEntityManager();
em.getTransaction().begin();
CriteriaQuery<Product> criteria = builder.createQuery( Product.class );
criteria.from( Product.class );
criteria.where( builder.disjunction() );
List<Product> result = em.createQuery( criteria ).getResultList();
assertEquals( 0, result.size() );
em.getTransaction().commit();
em.close();
}
public void testEmptyDisjunctionIsTrue() {
EntityManager em = getOrCreateEntityManager();
em.getTransaction().begin();
CriteriaQuery<Product> criteria = builder.createQuery( Product.class );
criteria.from( Product.class );
criteria.where( builder.isTrue( builder.disjunction() ) );
List<Product> result = em.createQuery( criteria ).getResultList();
assertEquals( 0, result.size() );
em.getTransaction().commit();
em.close();
}
public void testEmptyDisjunctionIsFalse() {
EntityManager em = getOrCreateEntityManager();
em.getTransaction().begin();
CriteriaQuery<Product> criteria = builder.createQuery( Product.class );
criteria.from( Product.class );
criteria.where( builder.isFalse( builder.disjunction() ) );
List<Product> result = em.createQuery( criteria ).getResultList();
assertEquals( 1, result.size() );
em.getTransaction().commit();
em.close();
}
public void testDiff() {
EntityManager em = getOrCreateEntityManager();
em.getTransaction().begin();
CriteriaQuery<Integer> criteria = builder.createQuery( Integer.class );
criteria.from( Product.class );
criteria.select( builder.diff( builder.literal( 5 ), builder.literal( 2 ) ) );
Integer result = em.createQuery( criteria ).getSingleResult();
assertEquals( Integer.valueOf( 3 ), result );
em.getTransaction().commit();
em.close();
}
public void testDiffWithQuotient() {
EntityManager em = getOrCreateEntityManager();
em.getTransaction().begin();
CriteriaQuery<Number> criteria = builder.createQuery( Number.class );
criteria.from( Product.class );
criteria.select(
builder.quot(
builder.diff(
builder.literal( BigDecimal.valueOf( 2.0 ) ),
builder.literal( BigDecimal.valueOf( 1.0 ) )
),
BigDecimal.valueOf( 2.0 )
)
);
Number result = em.createQuery( criteria ).getSingleResult();
assertEquals(0.5d, result.doubleValue(), 0.1d);
em.getTransaction().commit();
em.close();
}
public void testSumWithQuotient() {
EntityManager em = getOrCreateEntityManager();
em.getTransaction().begin();
CriteriaQuery<Number> criteria = builder.createQuery( Number.class );
criteria.from( Product.class );
criteria.select(
builder.quot(
builder.sum(
builder.literal( BigDecimal.valueOf( 0.0 ) ),
builder.literal( BigDecimal.valueOf( 1.0 ) )
),
BigDecimal.valueOf( 2.0 )
)
);
Number result = em.createQuery( criteria ).getSingleResult();
assertEquals(0.5d, result.doubleValue(), 0.1d);
em.getTransaction().commit();
em.close();
}
public void testQuotientAndMultiply() {
EntityManager em = getOrCreateEntityManager();
em.getTransaction().begin();
CriteriaQuery<Number> criteria = builder.createQuery( Number.class );
criteria.from( Product.class );
criteria.select(
builder.quot(
builder.prod(
builder.literal( BigDecimal.valueOf( 10.0 ) ),
builder.literal( BigDecimal.valueOf( 5.0 ) )
),
BigDecimal.valueOf( 2.0 )
)
);
Number result = em.createQuery( criteria ).getSingleResult();
assertEquals(25.0d, result.doubleValue(), 0.1d);
criteria.select(
builder.prod(
builder.quot(
builder.literal( BigDecimal.valueOf( 10.0 ) ),
builder.literal( BigDecimal.valueOf( 5.0 ) )
),
BigDecimal.valueOf( 2.0 )
)
);
result = em.createQuery( criteria ).getSingleResult();
assertEquals(4.0d, result.doubleValue(), 0.1d);
em.getTransaction().commit();
em.close();
}
public void testParameterReuse() {
EntityManager em = getOrCreateEntityManager();
em.getTransaction().begin();
CriteriaQuery<Product> criteria = em.getCriteriaBuilder().createQuery( Product.class );
Root<Product> from = criteria.from( Product.class );
ParameterExpression<String> param = em.getCriteriaBuilder().parameter( String.class );
Predicate predicate = em.getCriteriaBuilder().equal( from.get( Product_.id ), param );
Predicate predicate2 = em.getCriteriaBuilder().equal( from.get( Product_.name ), param );
criteria.where( em.getCriteriaBuilder().or( predicate, predicate2 ) );
assertEquals( 1, criteria.getParameters().size() );
TypedQuery<Product> query = em.createQuery( criteria );
int hqlParamCount = countGeneratedParameters( query.unwrap( Query.class ) );
assertEquals( 1, hqlParamCount );
query.setParameter( param, "abc" ).getResultList();
em.getTransaction().commit();
em.close();
}
private int countGeneratedParameters(Query query) {
AbstractQueryImpl hqlQueryImpl = (AbstractQueryImpl) query;
return hqlQueryImpl.getParameterMetadata().getNamedParameterNames().size();
}
public void testInExplicitTupleList() {
EntityManager em = getOrCreateEntityManager();
em.getTransaction().begin();
CriteriaQuery<Product> criteria = builder.createQuery( Product.class );
Root<Product> from = criteria.from( Product.class );
criteria.where( from.get( Product_.partNumber ).in( Collections.singletonList( ((long)Integer.MAX_VALUE) + 1 ) ) );
List<Product> result = em.createQuery( criteria ).getResultList();
assertEquals( 1, result.size() );
em.getTransaction().commit();
em.close();
}
public void testInExplicitTupleListVarargs() {
EntityManager em = getOrCreateEntityManager();
em.getTransaction().begin();
CriteriaQuery<Product> criteria = builder.createQuery( Product.class );
Root<Product> from = criteria.from( Product.class );
criteria.where( from.get( Product_.partNumber ).in( ((long)Integer.MAX_VALUE) + 1 ) );
List<Product> result = em.createQuery( criteria ).getResultList();
assertEquals( 1, result.size() );
em.getTransaction().commit();
em.close();
}
public void testInExpressionVarargs() {
EntityManager em = getOrCreateEntityManager();
em.getTransaction().begin();
CriteriaQuery<Product> criteria = builder.createQuery( Product.class );
Root<Product> from = criteria.from( Product.class );
criteria.where( from.get( Product_.partNumber ).in( from.get( Product_.partNumber ) ) );
List<Product> result = em.createQuery( criteria ).getResultList();
assertEquals( 1, result.size() );
em.getTransaction().commit();
em.close();
}
public void testJoinedElementCollectionValuesInTupleList() {
EntityManager em = getOrCreateEntityManager();
em.getTransaction().begin();
CriteriaQuery<Phone> criteria = builder.createQuery( Phone.class );
Root<Phone> from = criteria.from( Phone.class );
criteria.where(
from.join( "types" )
.in( Collections.singletonList( Phone.Type.WORK ) )
);
em.createQuery( criteria ).getResultList();
em.getTransaction().commit();
em.close();
}
}