> Hi I am sending this again could anyone tell me if this might be useful > to the communitY? I would like to help if it would be.
From the look of it looks like something that is "evil" since that code will not do what it actually states. Why not simply generate a MyClassProperties class that list the property names and use that to refer to some compiletime safe name ? Sounds much simpler and portable imo. /max > > Thanks, > > > > > Dhanji, > > > > > ________________________________ > > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf Of > Dhananjay Prasanna > Sent: Wednesday, 28 June 2006 11:31 AM > To: hibernate-devel@lists.sourceforge.net > Subject: [Hibernate] (semi) Entity-type safe criteria queries > > > > > Hi All > > > > > I am writing to ask about type-safety (in a very rudimentary way) in > Criteria queries. I know there has been some discussion around this > topic with the SODA group and others, but I am curious if this has been > considered for Hibernate. > > Basically, instead of using the system: > > > > > Criteria q = session.createCriteriaQuery(MyClass.class); > > q.add ( Restriction.eq( "propName", value) ); > > > > > which is unsafe to the entity-type under query, would it be possible to > do something like: > > > > > Criteria q = session.createSafeCriteriaQuery(MyClass.class); > > MyClass my = q.obtainQueryable(MyClass.class); > > q.add( Restriction.eq( my.getPropName(), value )); > > > > > The special instance "my" would contain proxies or bytecode-instrumented > properties that would return the appropriate mapped property name to the > Criterion. Apart from being safe to the Entity type under consideration > (statically) and its properties, this approach has the added advantage > of bringing criteria queries into an IDE's refactoring scope. > > > > > The cons are the added performance hit of proxies or bytecode > manipulation, and the extra step in obtaining a reference to a queryable > entity. However I believe the pros far outweigh this, as my own project > occasionally undergoes property-refactoring and has a LOT of > similarly-named properties across classes (too many for a sane person to > discriminate on sight!). > > Anyway, I thought I would bring it up-Im sure typesafety has been > discussed before so please forgive me if this is a rehash. I'm also > happy to contribute an implementation of this if you guys find it worth > adding. > > > > > Thanks!! > > > > > Dhanji. > > This correspondence is for the named persons only. > > It may contain confidential or privileged information or both. > > No confidentiality or privilege is waived or lost by any mis > transmission. > > If you receive this correspondence in error please delete it from your > system immediately and notify the sender. > > You must not disclose, copy or relay on any part of this correspondence, > if you are not the intended recipient. > > Any opinions expressed in this message are those of the individual > sender except where the sender expressly, > > and with the authority, states them to be the opinions of the Department > of Emergency Services, Queensland. > > > > > This correspondence is for the named persons only. > > It may contain confidential or privileged information or both. > > No confidentiality or privilege is waived or lost by any mis > transmission. > > If you receive this correspondence in error please delete it from your > system immediately and notify the sender. > > You must not disclose, copy or relay on any part of this correspondence, > if you are not the intended recipient. > > Any opinions expressed in this message are those of the individual > sender except where the sender expressly, > > and with the authority, states them to be the opinions of the Department > of Emergency Services, Queensland. -- -- Max Rydahl Andersen callto://max.rydahl.andersen Hibernate [EMAIL PROTECTED] http://hibernate.org JBoss Inc [EMAIL PROTECTED] Using Tomcat but need to do more? Need to support web services, security? Get stuff done quickly with pre-integrated technology to make your job easier Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642 _______________________________________________ hibernate-devel mailing list hibernate-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/hibernate-devel
