Menu
▾
▴
springframework-developer
|
From: <jue...@we...> - 2003-08-22 04:40:01
Attachments:
hibernate-sample.zip
|
SGkgTGFycywNCiANCkkgZG9uJ3Qga25vdyB3aGF0IHlvdSdyZSBzdHJ1Z2dsaW5nIHdpdGggLSBt YXBwaW5nIGEgaGJtIGZpbGUgc2hvdWxkIGJlIHByZXR0eSBzaW1wbGUuIEkgZXZlbiBnZXQgYSBu aWNlIGVycm9yIG1lc3NhZ2Ugd2hlbiBzcGVjaWZ5aW5nIGEgd3Jvbmcgb25lLiBJIGd1ZXNzIHlv dSdyZSByYXRoZXIgc3RydWdnbGluZyB3aXRoIEhpYmVybmF0ZSB0aGFuIHdpdGggU3ByaW5nLCBi dXQgSSBjYW4ndCByZWFsbHkganVkZ2UgYXMgeW91IGRpZG4ndCBwcm92aWRlIGFueSBkZXRhaWxz LiBEaWQgeW91IG1hbmFnZSB0byBzZXQgdXAgSGliZXJuYXRlICpzdGFuZGFsb25lKiwgZm9yIGV4 YW1wbGU/IERvZXMgdGhlIHdlYiBhcHAgd2l0aCBTcHJpbmcgc3RhcnQgdXAgc3RhbmRhbG9uZSwg d2l0aG91dCB5b3VyIExvY2FsU2Vzc2lvbkZhY3RvcnlCZWFuPw0KIA0KSSd2ZSBhdHRhY2hlZCBh IHNpbXBsZSBzZXR1cCBvZiBhIFNwcmluZy9IaWJlcm5hdGUgd2ViIGFwcCwganVzdCBpbmNsdWRp bmcgYSAxLWxpc3RlbmVyIHdlYi54bWwsIGEgMi1iZWFuIGFwcGxpY2F0aW9uIGNvbnRleHQsIDEg aGJtIGZpbGUsIGFuZCBvbmUgcGVyc2lzdGVudCBjbGFzcyBmaWxlLiBUaGF0IHNob3VsZCBzdGFy dCB1cCwgSGliZXJuYXRlIHdpbGwganVzdCBjb21wbGFpbiB0aGF0IGl0IGNhbid0IGFjY2VzcyBN eVNRTCBhdCB0aGUgc3BlY2lmaWVkIHBvcnQgZm9yIGV4dHJhY3RpbmcgbWV0YSBkYXRhIC0gYnV0 IHN0YXJ0dXAgd2lsbCBwcm9jZWVkLiBZb3UnbGwgc2VlIGluIHRoZSBsb2cgaWYgdGhlIGhibSBn ZXRzIGxvYWRlZCwgeW91IGNhbiBhbHNvIHRyeSB0byBicmVhayBpdCBhbmQgc2VlIGlmIEhpYmVy bmF0ZSBjb21wbGFpbnMgb24gcmVzdGFydGluZy4NCiANClJlZ2FyZGluZyBXZWJXb3JrOiBXZWJX b3JrIGFuZCBlc3BlY2lhbGx5IFdlYldvcmsyIGFyZSBuaWNlIHdlYiBmcmFtZXdvcmtzLCBubyBk b3VidC4gQnV0IHlvdSBkZWZpbml0ZWx5IHdvbid0IGFueSBwYXJ0aWN1bGFyIG1pZGRsZSB0aWVy IHN1cHBvcnQsIG5vdCBpbiB0ZXJtcyBvZiB0cmFuc2FjdGlvbnMgYW5kIG5vdCBpbiB0ZXJtcyBv ZiBwZXJzaXN0ZW5jZS4gSXQgbWlnaHQgZXZlbiBtYWtlIHNlbnNlIHRvIHVzZSBTcHJpbmcgYXMg bWlkZGxlIHRpZXIgZnJhbWV3b3JrIGluIGNvbWJpbmF0aW9uIHdpdGggV2ViV29yayBmb3IgdGhl IHdlYiB0aWVyLCBpZiB5b3UgZG9uJ3QgbGlrZSBTcHJpbmcncyBvd24gd2ViIE1WQy4gVGhlcmUg YXJlIGFscmVhZHkgcGVvcGxlIGRvaW5nIHRoYXQsIGV2ZW4gbW9yZSB3aXRoIFN0cnV0cyBmb3Ig dGhlIHdlYiB0aWVyLg0KIA0KVGhlcmUgYXJlIG51bWVyb3VzIGNvbXBhbmllcyB1c2luZyBhIFNw cmluZy9IaWJlcm5hdGUgY29tYm8gZm9yIHZhcmlvdXMgYXBwbGljYXRpb25zLCBpbmNsdWRpbmcg dGhlIG9uZSB0aGF0IEknbSB3aXRoLiBBZG1pdHRlZGx5LCBteSBtYWluIGV4cGVyaWVuY2UgaXMg d2l0aCBUb21jYXQgYW5kIFJlc2luLCBidXQgV2ViTG9naWMgc2hvdWxkIHdvcmsgbmljZWx5IHRv by4gVHJ5IGl0IHdpdGggYSBsb2NhbCBEYXRhU291cmNlIGZpcnN0LCBhcyBJJ3ZlIGRvbmUgaW4g dGhlIHNpbXBsZSBzZXR1cCB0aGF0IEkndmUgYXR0YWNoZWQuIFByb3ZpZGUgbWUgd2l0aCBkZXRh aWxzIG9uIGVycm9ycyB0aGF0IHlvdSBlbmNvdW50ZXIuIEFsbCB0aGluZ3MgY29uc2lkZXJlZDog RG9uJ3QgZ2l2ZSB1cCA6LSkNCiANClJlZ2FyZHMsDQpKdWVyZ2VuDQogDQogDQoNCgktLS0tLVVy c3Byw7xuZ2xpY2hlIE5hY2hyaWNodC0tLS0tIA0KCVZvbjogTGFycyBGaXNjaGVyIFttYWlsdG86 bGFycy5maXNjaGVyQGdteHByby5uZXRdIA0KCUdlc2VuZGV0OiBEbyAyMS4wOC4yMDAzIDE1OjA0 IA0KCUFuOiBzcHJpbmdmcmFtZXdvcmstZGV2ZWxvcGVyQGxpc3RzLnNvdXJjZWZvcmdlLm5ldCAN CglDYzogDQoJQmV0cmVmZjogW1NwcmluZ2ZyYW1ld29yay1kZXZlbG9wZXJdIEdpdmluZyB1cA0K CQ0KCQ0KDQoJRmluYWxseSBJJ3ZlIHdhc3RlZCB0byBtdWNoIHRpbWUgdHJ5aW5nIHRvIGdldCBT cHJpbmcgd29yayB3aXRoIEhpYmVybmF0ZQ0KCXdpdGhvdXQgYW4gZXhhbXBsZSBhYm91dCBjb25m aWd1cmF0aW9uLiANCgkNCglOZXZlciBoYWQgc28gbWFueSBwcm9ibGVtcyB1c2luZyBhIGZyYW1l d29yayBkZXNwaXRlIHRoZSBmYWN0IHRoYXQgdGhpcyBvbmUNCglpcyBiZXR0ZXIgZG9jdW1lbnRl ZCB0aGFuIG1vc3Qgb2YgdGhlIHJlc3QuIERvY3VtZW50YXRpb24gaXMganVzdCB0b28NCglhYnN0 cmFjdA0KCWF0IHRoZSBtb21lbnQgdG8gaGVscCB3aXRoIHJlYWwgd29ybGQgcHJvYmxlbXMuIEkg anVzdCBjYW4ndCBnZXQgU3ByaW5nIHRvDQoJbWFwIG15ICouaGJtLnhtbCBmaWxlIGRlZmluZWQg dW5kZXIgJ21hcHBpbmdSZXNvdXJjZXMnLiBFdmVuIHdvcnNlIEkgZG9uJ3QNCglnZXQgYW55DQoJ a2luZCBvZiB1c2VmdWwgZXJyb3IgbWVzc2FnZS4gTWF5YmUgdGhpcyBpcyBhIEJFQSBwcm9ibGVt IHdpdGggcmVhZGluZw0KCWNvbmZpZ3VyYXRpb24NCglpbnNpZGUgb2YgdGhlIHdhciwgbWF5YmUg bm90Lg0KCU1heWJlIEknbGwgY29udGludWUgaWYgdGhlcmUncyBhIHdvcmtpbmcgZXhhbXBsZSB3 aXRoIEhpYmVybmF0ZSAoYWxsIEkgd291bGQNCgluZWVkIGlzDQoJYSBDT01QTEVURSBjb25maWd1 cmF0aW9uIGV4YW1wbGUpLiBJTU8gdGhlIHNrZWxldG9ucyBhcmUgbm90IHZlcnkgdXNlZnVsLg0K CQ0KCU9uIHRoZSBvdGhlciBoYW5kIEkgZG9uJ3Qgd2FudCB0byB3YWl0IHVudGlsIE9jdG9iZXIg c28gSSdsbCB0YWtlIGEgbG9vaw0KCWF0IFdlYldvcmsyLiBJIGNvdWxkIHNvbHZlIGFsbCBteSBw cm9ibGVtcyB3aXRoIFdlYldvcmsgMSBteXNlbGYgd2l0aG91dA0KCWRvY3VtZW50YXRpb24uDQoJ DQoJVGhhbmtzIGEgbG90IGZvciBoZWxwaW5nIG1lIGluIHRoZSBwYXN0Lg0KCUxhcnMNCgkNCgkN CgkNCgkNCgktLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0t LS0tLS0tDQoJVGhpcyBTRi5uZXQgZW1haWwgaXMgc3BvbnNvcmVkIGJ5OiBWTSBXYXJlDQoJV2l0 aCBWTXdhcmUgeW91IGNhbiBydW4gbXVsdGlwbGUgb3BlcmF0aW5nIHN5c3RlbXMgb24gYSBzaW5n bGUgbWFjaGluZS4NCglXSVRIT1VUIFJFQk9PVElORyEgTWl4IExpbnV4IC8gV2luZG93cyAvIE5v dmVsbCB2aXJ0dWFsIG1hY2hpbmVzDQoJYXQgdGhlIHNhbWUgdGltZS4gRnJlZSB0cmlhbCBjbGlj ayBoZXJlOmh0dHA6Ly93d3cudm13YXJlLmNvbS93bC9vZmZlci8zNTgvMA0KCV9fX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fDQoJU3ByaW5nZnJhbWV3b3JrLWRl dmVsb3BlciBtYWlsaW5nIGxpc3QNCglTcHJpbmdmcmFtZXdvcmstZGV2ZWxvcGVyQGxpc3RzLnNv dXJjZWZvcmdlLm5ldA0KCWh0dHBzOi8vbGlzdHMuc291cmNlZm9yZ2UubmV0L2xpc3RzL2xpc3Rp bmZvL3NwcmluZ2ZyYW1ld29yay1kZXZlbG9wZXINCgkNCg0K |
|
From: <jue...@we...> - 2003-08-22 10:46:00
|
Hi Lars, I'm glad that you finally succeeded in making it work :-) > I've change the MySQL stuff to Postgres - no problem. At this point I = do NOT provide the database table for the example object. The application starts up fine and does not tell me anything about a mapping problem. Is this the default behaviour ? Yes, this is *Hibernate's* default behavior. It prepares the respective = statements on startup but does not valdidate them. You will detect = mapping syntax errors but not inconsistencies with the data model. > Another question about WebWork (2). I know the difference about Spring = and WebWork and that it's 'no problem' to combine the two frameworks.=20 But does it make any sense ? Is WebWork MVC superior ? IMO it does make more sense to stay with Spring alone so you don't have to deal with two technologies. You're right, of course - I don't *recommend* a WebWork/Spring combo. = Most people that do such combos with Struts or WebWork have investments = in the latter, possibly migrating existing applications. WebWork uses a specific command-style programming model for actions = while Spring recommends singleton-style reusable controllers. Spring = supports both models, though: You can achieve the command-style model = through declaring your Spring controllers as prototypes (<bean id=3D".." = singleton=3D"false"). Struts obviously has a lot of tag libraries and code generation tools, = so that may be another reason to choose it besides existing investments. = I'm not a great fan of Struts' programming model (Action, ActionForm) = though, so I recommend Spring's web MVC if there aren't any other = reasons involved. Juergen |
|
From: Lars F. <lar...@gm...> - 2003-08-22 10:17:17
|
Hi Jürgen, you're just too smart ... My previous mail explaining the error somehow got lost in cyberspace. Still don't know what I was struggling with. It just doesn't make any sense (that it doesn't work) and that's why I was so frustrated. Just started everything from scratch (and I mean everything - even wrote a new build.xml). Before I used the tutorial as starting point. The example behaves as expected, there's only one thing I'm wondering about: I've change the MySQL stuff to Postgres - no problem. At this point I do NOT provide the database table for the example object. The application starts up fine and does not tell me anything about a mapping problem. Is this the default behaviour ? Another question about WebWork (2). I know the difference about Spring and WebWork and that it's 'no problem' to combine the two frameworks. But does it make any sense ? Is WebWork MVC superior ? IMO it does make more sense to stay with Spring alone so you don't have to deal with two technologies. Thanks Lars > Hi Lars, > > I don't know what you're struggling with - m > apping a hbm file should be pretty simple. I even get a n > ice error message when specifying a wrong one. I guess yo > u're rather struggling with Hibernate than with Spring, b > ut I can't really judge as you didn't provide any details > . Did you manage to set up Hibernate *standalone*, for ex > ample? Does the web app with Spring start up standalone, > without your LocalSessionFactoryBean? > > I've attached a > simple setup of a Spring/Hibernate web app, just includi > ng a 1-listener web.xml, a 2-bean application context, 1 > hbm file, and one persistent class file. That should star > t up, Hibernate will just complain that it can't access M > ySQL at the specified port for extracting meta data - but > startup will proceed. You'll see in the log if the hbm g > ets loaded, you can also try to break it and see if Hiber > nate complains on restarting. > > Regarding WebWork: WebW > ork and especially WebWork2 are nice web frameworks, no d > oubt. But you definitely won't any particular middle tier > support, not in terms of transactions and not in terms o > f persistence. It might even make sense to use Spring as > middle tier framework in combination with WebWork for the > web tier, if you don't like Spring's own web MVC. There > are already people doing that, even more with Struts for > the web tier. > > There are numerous companies using a Sp > ring/Hibernate combo for various applications, including > the one that I'm with. Admittedly, my main experience is > with Tomcat and Resin, but WebLogic should work nicely to > o. Try it with a local DataSource first, as I've done in > the simple setup that I've attached. Provide me with deta > ils on errors that you encounter. All things considered: > Don't give up :-) > > Regards, > Juergen > > > > -----Ur > sprüngliche Nachricht----- > Von: Lars Fischer [mailto: > lar...@gm...] > Gesendet: Do 21.08.2003 15:04 > > An: spr...@li... > > Cc: > Betreff: [Springframework-developer] Giving up > > > > Finally I've wasted to much time trying to get S > pring work with Hibernate > without an example about conf > iguration. > > Never had so many problems using a frame > work despite the fact that this one > is better documente > d than most of the rest. Documentation is just too > abst > ract > at the moment to help with real world problems. I > just can't get Spring to > map my *.hbm.xml file defined > under 'mappingResources'. Even worse I don't > get any > > kind of useful error message. Maybe this is a BEA problem > with reading > configuration > inside of the war, maybe > not. > Maybe I'll continue if there's a working example w > ith Hibernate (all I would > need is > a COMPLETE configu > ration example). IMO the skeletons are not very useful. > > On the other hand I don't want to wait until October > so I'll take a look > at WebWork2. I could solve all my p > roblems with WebWork 1 myself without > documentation. > > > Thanks a lot for helping me in the past. > Lars > > > > > > ------------------------------------------------- > ------ > This SF.net email is sponsored by: VM Ware > Wit > h VMware you can run multiple operating systems on a sing > le machine. > WITHOUT REBOOTING! Mix Linux / Windows / No > vell virtual machines > at the same time. Free trial clic > k here:http://www.vmware.com/wl/offer/358/0 > ___________ > ____________________________________ > Springframework-de > veloper mailing list > Spr...@li... > urceforge.net > https://lists.sourceforge.net/lists/listi > nfo/springframework-developer > > |
|
From: Colin S. <col...@ex...> - 2003-08-23 04:04:05
|
Lars Fischer wrote: >Hi Jürgen, > >you're just too smart ... > >My previous mail explaining the error somehow got lost in cyberspace. > >Still don't know what I was struggling with. It just doesn't make any sense >(that it doesn't work) and that's why I was so frustrated. > >Just started everything from scratch (and I mean everything - even wrote >a new build.xml). Before I used the tutorial as starting point. > >The example behaves as expected, there's only one thing I'm wondering >about: > >I've change the MySQL stuff to Postgres - no problem. At this point I do >NOT provide the database table for the example object. The application >starts up fine and does not tell me anything about a mapping problem. >Is this the default behaviour ? > >Another question about WebWork (2). I know the difference about Spring and >WebWork and that it's 'no problem' to combine the two frameworks. >But does it make any sense ? Is WebWork MVC superior ? >IMO it does make more sense to stay with Spring alone so you don't have >to deal with two technologies. > > For anybody that hasn't decided on a web ui tier, I would also highly recommend Apache's Tapestry. Tapestry is a component oriented framework (somewhat similar to the web layer in Apple's WebObjects), where ui elements are java components, and components and pages have a full lifecycle and remember their state, while still working efficiently in a web environment. I think it's significantly higher level way of doing a web ui than the like of Spring's mvc framework or WebWork (never mind Struts, a truly mediocre framework in my opinion). Since Tapestry also does runtime code instrumentation, there is an easy mechanism to bring in beans from Spring context into Tapestry pages and components in a declarative fashion, maintaining inversion of control. Negatives include the fact that some of the concepts in Tapestry are hard to get your mind around if all you are used to is the traditional web ui approaches. I think it takes a good day or two to 'grok' tapestry. On the documentation side, there is a book by the author (to be published by Manning) coming out in a few months. Other than that, there is documentation ranging from excellent (component guide) to decent (usage guide) to out of date (most of the rest). There are some excellent examples though. Early next week I am going to try write a document describing some best practices for combining Spring and Tapestry. Hopefully that will be of use to anybody else that wants to combine these two excellent frameworks. Colin |
