Thank you, Larry.
The reason to use a relationship is that we have three kinds of
relations between users (each one is stored in a different table).
class Relationship
|______ class Friendship
|______ class AAA
|______ class BBB
The user selects the relation he is interested in, and we always work
with a Relationship object created by a factory:
Relationship relation = RelationFactory.create( ... ); // it returns
a Friendship, AAA or BBB instance.
So when we would like to be able to store it calling a saveRelation(
Relationship) method ... I'll try to omit the "parameterClass"
Thank you again,
Guido García Bernardo.
Larry Meadors escribió:
Why would you use a relationship instance to populate a friend table?
That seems inappropriate.
At any rate, if you ditch the parameter class (it is not required) it
will work.
Larry
On 10/9/06, Guido García Bernardo <[EMAIL PROTECTED]> wrote:
Imagine the following abstract class:
public abstract class Relationship {
private String dateRelation;
private Integer idUser;
// getters & setters
}
That allows to define several kinds of relations, i.e:
public class Friendship extends Relationship {
private String comment;
// getters & setters
}
The SQL map:
<sqlMap>
<typeAlias alias="relation" type="my.package.Relationship" />
<insert id="insertFriend" parameterClass="relation">
insert into FRIENDS ( id_user, date_relation, comment )
values ( #idUser#, #dateRelation#, #comment# )
</insert>
</sqlMap>
And my ibatis code throws a message error "There is not readable
property
'comment' in my.package.Relationship".
Relationship friend = new Friendship( ... );
saveRelation( friend );
...
public void saveRelation(Relationship relation) throws
DAOException {
try {
if (relation instanceof Friendship) {
getSqlMapExecutor().insert( "insertFriend", relation );
} else if ...
...
} catch (SQLException e) {
throw new DAOException( "Error saving friend", e );
}
}
Why ibatis does not discover object properties at runtime? Is there
any way
to use abstract classes in my sql-map files?
I am not sure if I have explained my problem properly...
Thank you very much.
Guido García Bernardo
--
Guido García Bernardo
Tfn. +34 983 54 89 08
ITDEUSTO - Valladolid
