Rick, When I use CMS, the roles must be pre-configured in web.xml, I usually need not delete the roles in database as long as they are setup and If I do so, it will cause problem. There is no requirement for me that given a role, list all the users related. Using such a query will results an extremely large result set in an internet application. You can use bi-directional relationship between User and Role, nothing wrong about that if that makes life easier. From my understanding, ejb deploy descriptor can be categorized into 4 parts: entity declaration, relationship declaration;
entity mapping declaration, relationship mapping declaration. The former should be in standrad dd while the later goes in vender specific dds. In my application, I have User and Role as entity bean. UserRole is the result of n-m relationship mapping between the two ebtity beans. As for cacade delete, it is just that JBossCMP cann't do it for you in n-m relationship. I met many limitations using CMR. I have to work around by manual coding. I guess that is not unusual. If your ejbdoclet task declaration in your build.xml is properly setup(including all the dependent class lib), another cause of not generating the dd may be the package name in the class file is not compatible with its location. Maybe you can have a check of both. Hope it helps, Guo --- "R. P. Ruiz" <[EMAIL PROTECTED]> 的正文：> Guo & all, > > Thanks for responding so quickly, i was beginning to > feel a bit adrift. > > Here's why i want to use what i understand is a a > bi-directional > relationship: just as i want to be able to retrieve > all roles that a > user has, i also want to retrieve all users who have > a role of type > 'appOneUser' for instance. As i understand it, i > can't currently do > this w/o declaring a cmr. This type of query will > prove invaluable once > i'm using the User/UserRole/Role entities to manage > accounts for > multiple applications deployed to different > container contexts, each w/ > many possible roles. > > The former (get a user's roles) i can already do w/o > having to declare a > cmr, as all i have to do is call a finder method on > the UserRole entity > to get all roles of type 'foo' and who's userid is > 'x'. > > The later (get a role's users) is a bit more > problematic, and i was > hoping that declaring a bidirectional relationship > would allow me to > write a query that traverses the User/UserRole/Role > tables w/o having to > resort to implementing a BMP entity using > hand-rolled SQL code. Any > thoughts on this? > > As far as cascade deletes are concerned, i can live > w/o the container > automating them for me, i can just delete the roles > a given user has as > i delete the user. Just a bit more code for me, and > it seems much more > manageable than finding 'all users that have a role > of type foo' since > that requires a join on tables. > > I've already tried to use what you've given me, and > can't seem to get > xdoclet to generate anyting in the ejb-jar.xml file. > That's nothing new > this week though, as i've encountered a number of > examples online that > xdoclet (for me) doesn't generate any relationship > entries for. I'll > have to try it again tomorrow w/ a clearer head. > > From what i've described, can you tell me if i've > at least understood > the concept of a bi-directional many-to-many > relationship? > > I'll let you know how it goes for me once i give > your source another go > tomorrow. > > Thanks, > > Rick > > guo yingshou wrote: > > Attached is my working copies of what you want > with a > > little difference. I use uni-directional > relationship > > from user to role. I wonder why you want a > > bi-directional one. Besides, you cann't do cascade > > delete unless the other side of the relationship > has a > > multiplicity of one. That is to say, in your case > of > > n-m relationship, you cann't do this. You might > need > > to adust your requirement a bit. Also I use value > > object generate by XDoclet, if you don't use it, > just > > comment out the value object tag both at class > level > > and method level. > > > > Hope it helps. > > > > guo > > --- "R. P. Ruiz" <[EMAIL PROTECTED]> ???:> > > Greetings! > > > >>After much tail chaising with JBoss 3.2.x, > >>Many-to-Many CMR, & XDoclet > >>v1.2b3 (much searching, reading, trial-and-error, > >>and gnashing of > >>teeth), i've decided that i'm in serious need of > >>guidance... > >> > >>I'm trying to implement what i believe is a > >>bidirectional many-to-many > >>cmr cmp relationship between two entities: > >> > >>1) UserBean and > >>2) RoleBean > >> > >>Their relationship can be described as: "any/many > >>users can have > >>any/many roles". > >> > >>I've implemented the 2 entities listed above, in > >>addition to a UserRole > >>entity which functions as a xwalk table between > User > >>and Role. Thus far, > >>i've been happily using them as a JBoss JAAS > >>authentication dataSource > >>for the last month, w/o declaring any kind of cmr > >>relationship between > >>them. What i want to do now is declare > >>relationships between entities > >>so that: > >> > >>1) when i find a user, i can get a collection of > >>their roles as an > >>attribute of the user object (instead of a > separate > >>lookup in the role > >>entity, which i can currently do), > >> > >>2) when i find a role, i can get a collection of > the > >>users who have this > >>role, expressed as an attribute of the roles > entity > >>(i can't do this > >>with my current entity implementations) > >> > >>3) when i delete a user, i want their delete to > >>cascade and remove all > >>of their roles, but not vice versa (removing a > role > >>does not delete the > >>user(s) associated with it) > >> > >>Does anybody have a working example of a > >>bidirectional Many-to-Many > >>relationship that works with JBoss 3.2.1 that they > >>would care to share > >>with me? > >> > >>Even if you don't have a working example, feel > free > >>to let me know if > >>i'm not describing my problem very well or am not > >>using the correct > >>terminology. > >> > >>Thanks, > >> > >>Rick > > > > ------------------------------------------------------- > This SF.Net email sponsored by: ApacheCon 2003, > 16-19 November in Las Vegas. Learn firsthand the > latest > developments in Apache, PHP, Perl, XML, Java, MySQL, > WebDAV, and more! http://www.apachecon.com/ > _______________________________________________ > xdoclet-user mailing list > [EMAIL PROTECTED] > https://lists.sourceforge.net/lists/listinfo/xdoclet-user __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com ------------------------------------------------------- This SF.Net email sponsored by: ApacheCon 2003, 16-19 November in Las Vegas. Learn firsthand the latest developments in Apache, PHP, Perl, XML, Java, MySQL, WebDAV, and more! http://www.apachecon.com/ _______________________________________________ xdoclet-user mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/xdoclet-user
