Component Creation Service Problems
Hello,
I have been following all of the steps in the JazzTalk example, and I was able to get the JazzTalk packages to work and run. When I tried to run my own component that was essentially JazzTalk in a different package structure and with some things renamed, I ran into the following error concerning my Message and common package not resolving to an IItemType. This was after verifying that my IMessageBoardService did show up on http://localhost/8080/jazz, and trying to access http://localhost:8080/jazz/service/kf.messageboard.common.IMessageBoardService/allMessages . Any ideas where I could have gone wrong such that the JazzTalk example works fine but I get an HTTP 500 error with my own component? Thanks, Jamie HTTP ERROR: 500 -- The name (Message) and namespace URI (kf.messageboard.common) do not resolve to a IItemType RequestURI=/jazz/service/kf.messageboard.common.IMessageBoardService/allMessages |
11 answers
jsamdal wrote:
Hello, Hi Jamie, My guess is that in the copy/paste/rename process you might have missed renaming one of the identification strings. I would go back and double check the Ecore model and the plugin.xml stuff for any lingering "jazztalk" strings. Don't forget to re-run codegen and regenerate the database if you need to change the storage model. If that doesn't track it down, I would try to get an exception stack from the server to try to figure out where it's failing over there. There may already be an exception stack in the console. If not you could debug the server and set a breakpoint in your MessageBoardService.getAllMessages() method and step through that to try to figure out where the error happens. hope this helps, Chris |
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Hello,
It seems to be crashing at: IItemQuery itemQuery = IItemQuery.FACTORY.newInstance(queryModel); in getAllMessages. with the stack trace copied below. I double checked my ecore model repeatedly, and the only difference between the downloaded jazztalk and my message board version (besides the different high level package names and calling things MessageBoard instead of JazzTalk) is that the 'JazzTalkModel' Ns URI has http://jazztalk.ecore (all lower case) and my 'MesageBoardModel' has Ns URI 'http://MessageBoard.ecore'. However, my component generation has problems if I try to make that part all lower case. The stack trace indicates there are problems with my common package and my Message class not resolving to an IItemType, but my Message is set up as a SimpleItem as directed in the JazzTalk walkthrough. Any other ideas of where to look? Thanks, Jamie Stack Trace: 12:05:01,890 WARN .team.repository.servlet.AbstractTeamServerServlet - Exception executing modeled rest service kf.messageboard.common.IMessageBoardService.getAllMessages java.lang.IllegalArgumentException: The name (Message) and namespace URI (kf.messageboard.common) do not resolve to a IItemType at com.ibm.team.repository.common.internal.querypath.AbstractQueryPathModel$Implementation.getItemType(AbstractQueryPathModel.java:153) at com.ibm.team.repository.common.query.IQuery$Factory.newInstance(IQuery.java:91) at kf.messageboard.service.MessageBoardService.getAllMessages(MessageBoardService.java:26) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:64) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:615) at org.eclipse.soda.sat.core.internal.record.ExportProxyServiceRecord.invoke(ExportProxyServiceRecord.java:326) at org.eclipse.soda.sat.core.internal.record.ExportProxyServiceRecord.access$0(ExportProxyServiceRecord.java:318) at org.eclipse.soda.sat.core.internal.record.ExportProxyServiceRecord$1.invoke(ExportProxyServiceRecord.java:106) at $Proxy81.getAllMessages(Unknown Source) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:64) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:615) at com.ibm.team.repository.servlet.AbstractTeamServerServlet.doModelledRestService(AbstractTeamServerServlet.java:342) at com.ibm.team.repository.servlet.AbstractTeamServerServlet.service(AbstractTeamServerServlet.java:1095) at javax.servlet.http.HttpServlet.service(HttpServlet.java:689) at org.eclipse.equinox.http.registry.internal.ServletManager$ServletWrapper.service(ServletManager.java:180) at org.eclipse.equinox.http.servlet.internal.ServletRegistration.handleRequest(ServletRegistration.java:90) at org.eclipse.equinox.http.servlet.internal.ProxyServlet.processAlias(ProxyServlet.java:109) at org.eclipse.equinox.http.servlet.internal.ProxyServlet.service(ProxyServlet.java:75) at javax.servlet.http.HttpServlet.service(HttpServlet.java:689) at org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:428) at org.mortbay.jetty.servlet.WebApplicationHandler.dispatch(WebApplicationHandler.java:473) at org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:568) at org.mortbay.http.HttpContext.handle(HttpContext.java:1530) at org.mortbay.jetty.servlet.WebApplicationContext.handle(WebApplicationContext.java:633) at org.mortbay.http.HttpContext.handle(HttpContext.java:1482) at org.mortbay.http.HttpServer.service(HttpServer.java:909) at org.mortbay.http.HttpConnection.service(HttpConnection.java:820) at org.mortbay.http.HttpConnection.handleNext(HttpConnection.java:986) at org.mortbay.http.HttpConnection.handle(HttpConnection.java:837) at org.mortbay.http.SocketListener.handleConnection(SocketListener.java:245) at org.mortbay.util.ThreadedServer.handle(ThreadedServer.java:357) at org.mortbay.util.ThreadPool$PoolThread.run(ThreadPool.java:534) |
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jsamdal wrote:
Hello, Looking at the exception stack it seems like you are in the second throw statement of AbstractQueryPathModel.Implementation.getItemType(), so the call to: IItemType itemType = IItemType.IRegistry.INSTANCE.getItemType(typeName, nsURI); returned null. I have seen this before when launch configurations get messed up by using the "Add Required Bundles" button on the launch config dialog. See https://jazz.net/wiki/bin/view/Main/JazzServerRunAndDebug for warnings about that. If you suspect your launch config might be bad then start over with a clean one (e.g. from the JazzTalk download). However it could also still be some typo in the common or service plugin.xml goop. Here's an idea: in your getAllMessages() method, before anything else, you could call: IItemType.IRegistry.INSTANCE.getAllItemTypes(); and either dump the values to the console or just look at it in the debugger. For each IItemType returned, look at the values of getName() and getNamespaceURI() and try to figure out if your item type is simply not there at all, or if the names are somehow not what you would expect. Chris |
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All of the items in that list are ibm specific - with namespace URI's of com.ibm.team.<something else>
Mine aren't showing up. Does that mean my launch files are probably incorrect? Jamie |
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jsamdal wrote:
All of the items in that list are ibm specific - with namespace URI's The launch file is my best guess simply because I've seen cases where bad launches resulted in the ItemType registry being incorrectly initialized. This should be an easy thing to "sanity-test" simply by starting over with a fresh launch. But it could also be some bug in the plugins themselves. If you want to attach your common and service plugins to a post here I'll take a look at them. Chris |
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Neither the JazzTalk launch or the Typical Launch seems to work. If you have time, I definitely would appreciate another eye on these to see where I could have messed up - again, I intended just to get the basic JazzTalk functionality working before I modified the ecore model, so it should be jazzTalk with different names at this point. :)
Hmm, I can't seem to find a way to post zip files to the forum. (It looks like it only accepts images or URLs). Could you point out how or could I send them to you directly? Thanks, Jamie |
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jsamdal wrote:
Attaching works for me (I'm using Mozilla Thunderbird as a newsreader). Another way of doing it would be to open a workitem on jazz.net ( https://jazz.net/bugs/bugs.jsp ) and attach the zip to the workitem. If you go this route, set the bug category to "Component Development" and then reply back here with the bug number. Chris |
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Hi Jamie,
I see the problem here. The nsURI of the *teamPackage* in your storage model needs to be the same as your component id. You are using "kf.messageboard" as your component id, but "kf.messageboard.common" as the teamPackage nsURI. I've attached some screenshots that show what I'm talking about. (Sorry - I got a little crazy with the pin. :-) The point is that you need to use the same id string in all of these places. So you need to: 1) change teamPackage nsURI to "kf.messageboard" 2) change the uri in the generated_package extension in common plugin.xml to "kf.messageboard" 3) run codegen again 4) rebuild the database 5) start server and test By the way, I'm almost positive that the nsURI of the *teamModel* is totally ignored by us. You mentioned before that you were seeing some problem when you changed your value ("http://MessageBoard.ecore") to lowercase. I think this must have been a red herring. Let me know if this gets you back on track.... Chris |
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Wow, thanks for finding that.
I changed the "messageboard" nsUri (since I think that's the team package) to be kf.messageboard, but then when I try to generate the component I get the following error: "Errors or warnings occured during code generation. Reason: View details for generation log." and details shows: "Error creating genmodel" "java.lang.NullPointerException". Is there a log somewhere that might have more information than that? I can't seem to find a genmodel log. (this was the same error I received when I changed the team model to have different capitalization). However, unlike before, when I put it back the way it was it is still giving me that same error. :-/ I must have really messed something up... Thanks, Jamie |
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I just verified that I am getting the same errors on the jazztalk example when I try to generate the component... any idea what i messed up?
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