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From Andrea Selva <selva.an...@gmail.com>
Subject Problem with id mapping to IDENTITY in HSQLDB
Date Thu, 22 Apr 2010 07:30:49 GMT
Hi list,
i've a trouble with IDENTITY in hsqldb and id attribute in a resulMap:

--- Activity DDL ----
DROP TABLE Activity;

CREATE TABLE Activity (
    idActivity IDENTITY,
    name varchar(30) not null,
    description varchar(100) null,
    constraint pk_activity primary key (idActivity)
);

----ResultMap ---------
<resultMap id="activityResultMap" type="Activity">
    <id property="id" column="idActivity" />
    <result property="name" column="name" />
    <result property="description" column="description" />
</resultMap>

NB Activity is an alias for the class i map

--- This is my mapper annotated interface -----
public interface ActivityMapper {
    @Select("SELECT * FROM Activity")
    List<Activity> listAll();
}


--- My domain class ----
public class Activity implements Serializable {
    private static final long serialVersionUID = -4735861071294335763L;
    private int id = -55; //only for test
    private String name;
    private String description;

    public Activity(String name, String description) {
        this.name = name;
        this.description = description;
    }

    public Activity() {}

    public int getId() {
        return id;
    }

    public String getDescription() {
        return description;
    }

    public String getName() {
        return name;
    }

    public int getDays() {
        return days;
    }
}


--- This is the test incriminate test code ---

@Test
    public void testAllActivities() throws SQLException, IOException {
        Activity activity1 = new Activity("Fake Name", "Fake description");
        Activity activity2 = new Activity("Fake Name 2", "Second fake
description");
        IActivityDAO dao = new IBatisActivityDAO();
        dao.addNewActivity(activity1);
        dao.addNewActivity(activity2);

        DBUtils.printQueryResults("SELECT * FROM Activity");

        Reader reader =
Resources.getResourceAsReader("org/dna/metronomo/persistence/configuration.xml");
        SqlSessionFactory m_sqlSessionFactory = new
SqlSessionFactoryBuilder().build(reader);
        ActivityMapper mapper =
m_sqlSessionFactory.openSession().getMapper(ActivityMapper.class);
        List<Activity> activities = mapper.listAll();
        assertEquals(2, activities.size());
        assertEquals(activity1.getName(), activities.get(0).getName());
        assertEquals(0, activities.get(0).getId());
        assertEquals(activity2.getName(), activities.get(1).getName());
        assertEquals(1, activities.get(1).getId());
    }

When I load the list of activities I find correctly populated all attributes
except the key attribute, the id, i discover that the mapper doesn't fill it
with the correct value from DB (a SELECT on the DB shot that the data are
presents) but put the -55 default value that I set.
I can't understand why IBatis 3 doesn't corretly map the key IDENTITY column
to the java attribute.
The iBAtis3 svn rev I use is r928229.
Many thanks in advance for any usefull hint.
 Best regards
  Andrea Selva

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