Ok great. Let me see where I go with this setup. I will use Beta2. Also for AOP issues then I would use Tuscany's AOP framework rather than Spring's even within the webapp layer. Will that work. In asking this question I have to say I have a basic understanding of how AOP works not in depth.
Thanks.. monosij On Tue, Apr 5, 2011 at 3:31 AM, ant elder <[email protected]> wrote: > Yes exactly. I think thats an approach which fits in very well with > SCA and web applications. > > One note, is that 2.0-Beta2 is the current latest release so thats > what you should move up to not M5 which is a little older now. > > ...ant > > On Tue, Apr 5, 2011 at 3:36 AM, Monosij Dutta-Roy > <[email protected]> wrote: > > hi Simon, AntElder - > > Thanks for your responses. I will take a couple of days and reconfigure > it > > the way you mention with Tuscany 2.0 M5 and not M4. > > I also wanted to ask - is this a 'proper' architectural approach in > > developing a webapp? > > My reasoning is - this approach could help me swap out the interface > layer > > (the webapp part of it) - with say Spring MVC or Struts or Guice and > such. > > And allow scaling of the other composites (components) across one or more > > nodes. > > Once i get this webapp going I would like to approach it from a Spring > MVC > > webapp perspective and keep the other composites as they are. > > Just wondering if you think that - that is a good approach - or should I > be > > considering scaling and such from a different approach. > > Thanks. > > monosij > > > > On Mon, Apr 4, 2011 at 3:20 PM, ant elder <[email protected]> wrote: > >> > >> On Mon, Apr 4, 2011 at 6:00 PM, Monosij Dutta-Roy > >> <[email protected]> wrote: > >> > hi Raymond > >> > Thanks for your response. I don't know if you got those composites > from > >> > the > >> > war but here are my 3 composites attached. > >> > I think the references are ok. I did make sure they are. > >> > It is not the same as you show below - which means maybe there is > maven > >> > packaging issue? > >> > The dependency is as follows: qmWebApp > qmController > entitBCA. > >> > I did a mvn clean - and mvn package - before a mvn jetty:run > >> > And to answer your ques - I have (as far as I understand) 1 web app - > >> > with 2 > >> > dependent components. > >> > Yes they are to the same Jetty (under Maven). > >> > Hope that helps. > >> > I will be taking a look at the war file again and the composites in it > >> > when > >> > I get back later today. > >> > Thanks a lot. > >> > monosij > >> > > >> > On Mon, Apr 4, 2011 at 12:24 PM, Raymond Feng <[email protected]> > >> > wrote: > >> >> > >> >> By looking at the web.composite file you have: > >> >> <composite xmlns="http://docs.oasis-open.org/ns/opencsa/sca/200903"; > >> >> xmlns:tuscany="http://tuscany.apache.org/xmlns/sca/1.1"; > >> >> targetNamespace="http://com.bca.app"; > >> >> name="qmApp"> > >> >> <!-- component name="qmAppWebComponent"> > >> >> <implementation.web web-uri=""/> > >> >> <reference name="service" target="QueryServiceComponent"/> > >> >> </component> > >> >> <component name="QueryControllerComponent"> > >> >> <implementation.java > class="com.bca.qm.QueryControllerImpl"/--> > >> >> </component> > >> >> <component name="QueryService"> > >> >> <implementation.java > >> >> class="com.bca.pearl.app.QueryServiceImpl"/> > >> >> </component> > >> >> </composite> > >> >> There are two issues: > >> >> 1) The target attribute doesn't match the component name (red) > >> >> 2) There is no reference under QueryService component > >> >> to QueryControllerComponent > >> >> Thanks, > >> >> Raymond > >> >> ________________________________________________________________ > >> >> Raymond Feng > >> >> [email protected] > >> >> Apache Tuscany PMC member and committer: tuscany.apache.org > >> >> Co-author of Tuscany SCA In Action book: www.tuscanyinaction.com > >> >> Personal Web Site: www.enjoyjava.com > >> >> ________________________________________________________________ > >> >> On Apr 4, 2011, at 8:33 AM, Monosij Dutta-Roy wrote: > >> >> > >> >> As requested here are the attached files. > >> >> > >> >> Thanks for taking a look at my war. Its attached along with the three > >> >> composites and two contributions. > >> >> It contains the dependent jars: entityBCA and qmController. > >> >> The errors I get is in the earlier part of the thread. > >> >> I am trying to create a basic db search app with three components. > >> >> So the structure is as follows: > >> >> ---------- > >> >> entityBCA - domain.composite - sca-contribution.xml - pom.xml > >> >> has domain objects such as patients, addresses. > >> >> qmController - querycontroller.composite - sca-contribution.xml - > >> >> pom.xml > >> >> a search controller that has a searchComposer and searchExecutor. > >> >> qmApp - web.composite - no sca-contribution.xml > >> >> the webapp which passes the query to qmController > >> >> ---------- > >> >> What I was trying to figure out is - as you show in the examples - > >> >> client > >> >> do the entityBCA and qmController need to be loaded as nodes? Or > does > >> >> Tuscany within Jetty already do it? > >> >> My goal is to keep the webapp framework - jsp / jsf and such > completely > >> >> separate from the core components such that the front end > technologies > >> >> can > >> >> be changed while configuring the other components to be run in a > >> >> distributed > >> >> environment. > >> >> ---------- > >> >> My background is Java / C++ and somewhat new to the JEE frameworks > such > >> >> as > >> >> Tuscany, Maven and such - so XML configs is a little new to me. > >> >> Thanks a lot! > >> >> monosij > >> >> > >> >> On Sun, Apr 3, 2011 at 10:26 AM, Simon Nash <[email protected]> wrote: > >> >>> > >> >>> Monosij Dutta-Roy wrote: > >> >>>> > >> >>>> New to Tuscany and following SCA in Action. Have a question on a > >> >>>> webapp > >> >>>> I created using the Maven tasks. > >> >>>> The webapp works fine as a single composite - broken up by several > >> >>>> components. > >> >>>> ------------------------ > >> >>>> However when I create several composites (different contributions > >> >>>> using > >> >>>> Maven tasks) and wire them together - again webapp compiles and > sets > >> >>>> up in > >> >>>> Jetty fine. When I hit a component that has a reference in a > separate > >> >>>> composite I get an error as below: > >> >>>> ------------------------ > >> >>>> Problem accessing /qmApp/. Reason: > >> >>>> org.oasisopen.sca.SCARuntimeException: Unable to bind > >> >>>> (@31214809)EndpointReference: URI = > >> >>>> QueryServiceComponent#reference(queryController) > >> >>>> WIRED_TARGET_NOT_FOUND > >> >>>> Target = (@3751575)Endpoint: URI = > >> >>>> QueryController#service(QueryControllerService) [Unresolved] > >> >>>> > >> >>>> The QueryController/QueryControllerService is setup as a reference. > >> >>>> ------------------------ > >> >>>> Its a small app and I have looked at the configs in detail and > think > >> >>>> they are correct. Of course Maven compiles all of them fine - and > as > >> >>>> I said > >> >>>> deploys fine as well. > >> >>>> > >> >>>> However I am not sure I am loading the QueryController (the other > >> >>>> contribution/composite/reference - setup as a service) properly. I > >> >>>> have > >> >>>> checked the composite file quite thoroughly and relevant code. I > can > >> >>>> upload > >> >>>> them if needed. > >> >>>> ------------------------ > >> >>>> I assume when the war is build all the dependent jars are packaged > in > >> >>>> by > >> >>>> Maven and when Jetty starts the Tuscany API sorts out the > >> >>>> dependencies? Or > >> >>>> is there anything else I need to do for this quite simple setup? > But > >> >>>> a setup > >> >>>> that involves a webapp with different contributions. > >> >>>> > >> >>>> The reason I ask is also because the webapp generated by Maven does > >> >>>> not > >> >>>> have a sca-contribution.xml file where I import / export other > >> >>>> packages. > >> >>>> ------------------------ > >> >>>> Thanks. > >> >>>> > >> >>> It would be very useful if you could upload the failing war file. > >> >>> This > >> >>> might provide some important clues to the cause of the problem. > >> >>> > >> >>> Simon > >> >>> > >> >> > >> >> > >> >> > >> >> > >> >> > <qmApp-1.0-SNAPSHOT.war><qmApp-1.0-SNAPSHOT.pom><entityBCA-1.0-SNAPSHOT.pom><qmController-1.0-SNAPSHOT.pom> > >> > > >> > > >> > >> Hi monosij, > >> > >> I don't think Tuscany 1.x or 2.0-M4 supported multiple SCA > >> contribution within the WEB-INF/lib folder, there may be a way I'm not > >> remembering but I don't think so. If you put SCA contributions jars > >> into WEB-INF/lib they are just treated as regular jars not SCA > >> contributions and any .composite or sca-contribution.xml files within > >> are ignored. > >> > >> There is a way to do this since 2.0-M5 by putting the contributions > >> into a folder name WEB-INF/sca-contributions. There is a sample which > >> demonstrates this that we have just added to the trunk samples, so its > >> pom.xml shows what you need to do, see > >> > >> > https://svn.apache.org/repos/asf/tuscany/sca-java-2.x/trunk/samples/getting-started/helloworld-webapp/ > >> > >> Note that when you update to the later Tuscany 2.x releases that the > >> SCA namespace changed so you will need to update your contributions. > >> The change is in your .composite and sca-contribution.xml files should > >> have xmlns="http://docs.oasis-open.org/ns/opencsa/sca/200912"; - note > >> 12 at the end instead of the 03 that 2.0-M4 used. > >> > >> Give it a try with the latest Tuscany release - 2.0-Beta2 - and let us > >> know how you get on. > >> > >> ...ant > > > > >
