cayenne/src/test/java/org/apache/cayenne/access/DataContextEJBQLInheritanceIT.java

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package org.apache.cayenne.access;

import static org.junit.Assert.assertEquals;

import java.sql.Types;
import java.util.List;

import org.apache.cayenne.ObjectContext;
import org.apache.cayenne.di.Inject;
import org.apache.cayenne.query.EJBQLQuery;
import org.apache.cayenne.test.jdbc.TableHelper;
import org.apache.cayenne.testdo.inheritance_people.CustomerRepresentative;
import org.apache.cayenne.testdo.inheritance_people.Employee;
import org.apache.cayenne.testdo.inheritance_people.Manager;
import org.apache.cayenne.unit.di.runtime.PeopleProjectCase;
import org.junit.Before;
import org.junit.Test;

public class DataContextEJBQLInheritanceIT extends PeopleProjectCase {

    @Inject
    protected ObjectContext context;

    @Before
    public void setUp() throws Exception {
        TableHelper person = new TableHelper(dbHelper, "PERSON");
        person.setColumns("PERSON_ID", "NAME", "PERSON_TYPE", "SALARY").setColumnTypes(Types.INTEGER, Types.VARCHAR,
                Types.CHAR, Types.FLOAT);

        person.insert(1, "a", "EE", 20000);
        person.insert(2, "b", "EE", 25000);
        person.insert(4, "c", "EM", 30000);
        person.insert(5, "d", "EM", 40000);
        person.insert(6, "e", "C", null);
    }

    @Test
    public void testSelect() throws Exception {

        EJBQLQuery superclass = new EJBQLQuery("select p from AbstractPerson p ORDER BY p.name");

        List<?> superclassResult = context.performQuery(superclass);
        assertEquals(5, superclassResult.size());

        assertEquals(Employee.class.getName(), superclassResult.get(0).getClass().getName());
        assertEquals(Employee.class.getName(), superclassResult.get(1).getClass().getName());
        assertEquals(Manager.class.getName(), superclassResult.get(2).getClass().getName());
        assertEquals(Manager.class.getName(), superclassResult.get(3).getClass().getName());
        assertEquals(CustomerRepresentative.class.getName(), superclassResult.get(4).getClass().getName());

        EJBQLQuery subclass = new EJBQLQuery("select e from Employee e ORDER BY e.name");

        List<?> subclassResult = context.performQuery(subclass);
        assertEquals(4, subclassResult.size());

        assertEquals(Employee.class.getName(), subclassResult.get(0).getClass().getName());
        assertEquals(Employee.class.getName(), subclassResult.get(1).getClass().getName());
        assertEquals(Manager.class.getName(), subclassResult.get(2).getClass().getName());
        assertEquals(Manager.class.getName(), subclassResult.get(3).getClass().getName());
    }
}