Cannot check out Arrays from EDB

[Matthias]

Hello,

In our model I use an array of models  to represent a hirarchy while communicating with connectors. When the data is checked in into the database I don't need the hirarchy any more and the array field is set to null (I als tried an empty array). The checkin works fine, but when I want to check out I always get the same Exception:

2013-02-08 01:10:01,234 | ERROR | qtp1353424621-61 | DefaultExceptionMapper           | 49 - org.ops4j.pax.wicket.service - 1.0.2 | Unexpected error occurred
org.apache.wicket.WicketRuntimeException: Can't instantiate page using constructor 'public at.ac.tuwien.ifs.cdl.ui.sms.hwconfig.pages.MergePage()'. Might be it doesn't exist, may be it is not visible (public).
        at org.apache.wicket.session.DefaultPageFactory.newPage(DefaultPageFactory.java:196)[49:org.ops4j.pax.wicket.service:1.0.2]
        at org.apache.wicket.session.DefaultPageFactory.newPage(DefaultPageFactory.java:68)[49:org.ops4j.pax.wicket.service:1.0.2]
        at org.apache.wicket.session.DefaultPageFactory.newPage(DefaultPageFactory.java:47)[49:org.ops4j.pax.wicket.service:1.0.2]
        at org.apache.wicket.DefaultMapperContext.newPageInstance(DefaultMapperContext.java:103)[49:org.ops4j.pax.wicket.service:1.0.2]
        at org.apache.wicket.request.handler.PageProvider.resolvePageInstance(PageProvider.java:264)[49:org.ops4j.pax.wicket.service:1.0.2]
        at org.apache.wicket.request.handler.PageProvider.getPageInstance(PageProvider.java:165)[49:org.ops4j.pax.wicket.service:1.0.2]
        at org.apache.wicket.request.handler.render.PageRenderer.getPage(PageRenderer.java:78)[49:org.ops4j.pax.wicket.service:1.0.2]
        at org.apache.wicket.request.handler.render.WebPageRenderer.renderPage(WebPageRenderer.java:105)[49:org.ops4j.pax.wicket.service:1.0.2]
        at org.apache.wicket.request.handler.render.WebPageRenderer.respond(WebPageRenderer.java:224)[49:org.ops4j.pax.wicket.service:1.0.2]

        at org.apache.wicket.request.handler.RenderPageRequestHandler.respond(RenderPageRequestHandler.java:167)[49:org.ops4j.pax.wicket.service:1.0.2]
        at org.apache.wicket.request.cycle.RequestCycle$HandlerExecutor.respond(RequestCycle.java:784)[49:org.ops4j.pax.wicket.service:1.0.2]
        at org.apache.wicket.request.RequestHandlerStack.execute(RequestHandlerStack.java:64)[49:org.ops4j.pax.wicket.service:1.0.2]
        at org.apache.wicket.request.cycle.RequestCycle.execute(RequestCycle.java:255)[49:org.ops4j.pax.wicket.service:1.0.2]
        at org.apache.wicket.request.cycle.RequestCycle.processRequest(RequestCycle.java:212)[49:org.ops4j.pax.wicket.service:1.0.2]
        at org.apache.wicket.request.cycle.RequestCycle.processRequestAndDetach(RequestCycle.java:283)[49:org.ops4j.pax.wicket.service:1.0.2]
        at org.apache.wicket.protocol.http.WicketFilter.processRequest(WicketFilter.java:188)[49:org.ops4j.pax.wicket.service:1.0.2]
        at org.apache.wicket.protocol.http.WicketServlet.doGet(WicketServlet.java:137)[49:org.ops4j.pax.wicket.service:1.0.2]
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:575)[92:org.apache.geronimo.specs.geronimo-servlet_3.0_spec:1.0]
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:668)[92:org.apache.geronimo.specs.geronimo-servlet_3.0_spec:1.0]
        at org.ops4j.pax.wicket.internal.FilterDelegator$Chain.doFilter(FilterDelegator.java:79)[49:org.ops4j.pax.wicket.service:1.0.2]
        at org.apache.shiro.web.servlet.AbstractShiroFilter.executeChain(AbstractShiroFilter.java:449)
        at org.apache.shiro.web.servlet.AbstractShiroFilter$1.call(AbstractShiroFilter.java:365)
        at org.apache.shiro.subject.support.SubjectCallable.doCall(SubjectCallable.java:90)
        at org.apache.shiro.subject.support.SubjectCallable.call(SubjectCallable.java:83)
        at org.apache.shiro.subject.support.DelegatingSubject.execute(DelegatingSubject.java:380)
        at org.apache.shiro.web.servlet.AbstractShiroFilter.doFilterInternal(AbstractShiroFilter.java:362)
        at org.apache.shiro.web.servlet.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:125)
        at org.ops4j.pax.wicket.internal.FilterDelegator$Chain.doFilter(FilterDelegator.java:77)[49:org.ops4j.pax.wicket.service:1.0.2]
        at org.openengsb.ui.common.util.ContextIdFilter.doFilter(ContextIdFilter.java:67)
        at org.ops4j.pax.wicket.internal.FilterDelegator$Chain.doFilter(FilterDelegator.java:77)[49:org.ops4j.pax.wicket.service:1.0.2]
        at org.ops4j.pax.wicket.internal.FilterDelegator.doFilter(FilterDelegator.java:61)[49:org.ops4j.pax.wicket.service:1.0.2]
        at org.ops4j.pax.wicket.internal.ServletProxy$ServletInvocationHandler.invoke(ServletProxy.java:72)[49:org.ops4j.pax.wicket.service:1.0.2]
        at $Proxy59.service(Unknown Source)[49:org.ops4j.pax.wicket.service:1.0.2]
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)[:1.6.0_31]
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)[:1.6.0_31]
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)[:1.6.0_31]
        at java.lang.reflect.Method.invoke(Method.java:597)[:1.6.0_31]
        at org.ops4j.pax.web.service.internal.HttpServiceStarted$2.invoke(HttpServiceStarted.java:242)[100:org.ops4j.pax.web.pax-web-runtime:2.1.0]
        at org.ops4j.pax.web.service.internal.$Proxy60.service(Unknown Source)[100:org.ops4j.pax.web.pax-web-runtime:2.1.0]
        at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:648)[97:org.eclipse.jetty.aggregate.jetty-all-server:8.1.7.v20120910]
        at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:455)[97:org.eclipse.jetty.aggregate.jetty-all-server:8.1.7.v20120910]
        at org.ops4j.pax.web.service.jetty.internal.HttpServiceServletHandler.doHandle(HttpServiceServletHandler.java:70)[101:org.ops4j.pax.web.pax-web-jetty:2.1.0]
        at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:137)[97:org.eclipse.jetty.aggregate.jetty-all-server:8.1.7.v20120910]
        at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:559)[97:org.eclipse.jetty.aggregate.jetty-all-server:8.1.7.v20120910]
        at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:231)[97:org.eclipse.jetty.aggregate.jetty-all-server:8.1.7.v20120910]
        at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1072)[97:org.eclipse.jetty.aggregate.jetty-all-server:8.1.7.v20120910]
        at org.ops4j.pax.web.service.jetty.internal.HttpServiceContext.doHandle(HttpServiceContext.java:173)[101:org.ops4j.pax.web.pax-web-jetty:2.1.0]
        at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:382)[97:org.eclipse.jetty.aggregate.jetty-all-server:8.1.7.v20120910]
        at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:193)[97:org.eclipse.jetty.aggregate.jetty-all-server:8.1.7.v20120910]
        at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1006)[97:org.eclipse.jetty.aggregate.jetty-all-server:8.1.7.v20120910]
        at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:135)[97:org.eclipse.jetty.aggregate.jetty-all-server:8.1.7.v20120910]
        at org.ops4j.pax.web.service.jetty.internal.JettyServerHandlerCollection.handle(JettyServerHandlerCollection.java:74)[101:org.ops4j.pax.web.pax-web-jetty:2.1.0]
        at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:116)[97:org.eclipse.jetty.aggregate.jetty-all-server:8.1.7.v20120910]
        at org.eclipse.jetty.server.Server.handle(Server.java:365)[97:org.eclipse.jetty.aggregate.jetty-all-server:8.1.7.v20120910]
        at org.eclipse.jetty.server.AbstractHttpConnection.handleRequest(AbstractHttpConnection.java:485)[97:org.eclipse.jetty.aggregate.jetty-all-server:8.1.7.v20120910]
        at org.eclipse.jetty.server.AbstractHttpConnection.headerComplete(AbstractHttpConnection.java:926)[97:org.eclipse.jetty.aggregate.jetty-all-server:8.1.7.v20120910]
        at org.eclipse.jetty.server.AbstractHttpConnection$RequestHandler.headerComplete(AbstractHttpConnection.java:988)[97:org.eclipse.jetty.aggregate.jetty-all-server:8.1.7.v20120910]
        at org.eclipse.jetty.http.HttpParser.parseNext(HttpParser.java:635)[97:org.eclipse.jetty.aggregate.jetty-all-server:8.1.7.v20120910]

        at org.eclipse.jetty.http.HttpParser.parseAvailable(HttpParser.java:235)[97:org.eclipse.jetty.aggregate.jetty-all-server:8.1.7.v20120910]
        at org.eclipse.jetty.server.AsyncHttpConnection.handle(AsyncHttpConnection.java:82)[97:org.eclipse.jetty.aggregate.jetty-all-server:8.1.7.v20120910]
        at org.eclipse.jetty.io.nio.SelectChannelEndPoint.handle(SelectChannelEndPoint.java:627)[97:org.eclipse.jetty.aggregate.jetty-all-server:8.1.7.v20120910]
        at org.eclipse.jetty.io.nio.SelectChannelEndPoint$1.run(SelectChannelEndPoint.java:51)[97:org.eclipse.jetty.aggregate.jetty-all-server:8.1.7.v20120910]
        at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:608)[97:org.eclipse.jetty.aggregate.jetty-all-server:8.1.7.v20120910]
        at org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:543)[97:org.eclipse.jetty.aggregate.jetty-all-server:8.1.7.v20120910]
        at java.lang.Thread.run(Thread.java:662)[:1.6.0_31]
Caused by: java.lang.reflect.InvocationTargetException
        at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)[:1.6.0_31]
        at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)[:1.6.0_31]
        at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)[:1.6.0_31]
        at java.lang.reflect.Constructor.newInstance(Constructor.java:513)[:1.6.0_31]
        at org.apache.wicket.session.DefaultPageFactory.newPage(DefaultPageFactory.java:177)[49:org.ops4j.pax.wicket.service:1.0.2]
        ... 64 more
Caused by: java.lang.IllegalArgumentException: Can not set [Lat.ac.tuwien.ifs.cdl.domain.cdg.model.Component; field at.ac.tuwien.ifs.cdl.domain.cdg.model.Component.childComponents to java.lang.String
        at sun.reflect.UnsafeFieldAccessorImpl.throwSetIllegalArgumentException(UnsafeFieldAccessorImpl.java:146)[:1.6.0_31]
        at sun.reflect.UnsafeFieldAccessorImpl.throwSetIllegalArgumentException(UnsafeFieldAccessorImpl.java:150)[:1.6.0_31]
        at sun.reflect.UnsafeObjectFieldAccessorImpl.set(UnsafeObjectFieldAccessorImpl.java:63)[:1.6.0_31]
        at java.lang.reflect.Field.set(Field.java:657)[:1.6.0_31]
        at org.openengsb.core.util.ModelUtils.tryToSetValueThroughField(ModelUtils.java:183)
        at org.openengsb.core.util.ModelUtils.createModel(ModelUtils.java:155)
        at org.openengsb.core.ekb.common.EDBConverter.convertEDBObjectToUncheckedModel(EDBConverter.java:132)
        at org.openengsb.core.ekb.common.EDBConverter.convertEDBObjectToModel(EDBConverter.java:63)
        at org.openengsb.core.ekb.common.EDBConverter.convertEDBObjectsToModelObjects(EDBConverter.java:73)
        at org.openengsb.core.ekb.persistence.query.edb.internal.QueryInterfaceService.queryForModelsAtTimestamp(QueryInterfaceService.java:99)
        at org.openengsb.core.ekb.persistence.query.edb.internal.QueryInterfaceService.queryForModels(QueryInterfaceService.java:86)
        at Proxye1346624_7526_4637_8c15_c6192eae0d36.queryForModels(Unknown Source)
        at Proxy00c93ae7_02a8_4c94_b163_30aaae6ef04c.queryForModels(Unknown Source)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)[:1.6.0_31]
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)[:1.6.0_31]
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)[:1.6.0_31]
        at java.lang.reflect.Method.invoke(Method.java:597)[:1.6.0_31]
        at org.ops4j.pax.wicket.util.proxy.LazyInitProxyFactory$JdkHandler.invoke(LazyInitProxyFactory.java:238)[49:org.ops4j.pax.wicket.service:1.0.2]
        at org.ops4j.pax.wicket.util.proxy.$Proxy88.queryForModels(Unknown Source)
        at at.ac.tuwien.ifs.cdl.ui.sms.hwconfig.pages.MergePage.initContent(MergePage.java:121)
        at at.ac.tuwien.ifs.cdl.ui.sms.hwconfig.pages.MergePage.<init>(MergePage.java:60)
        ... 69 more

As I understand that, the EDB tries to set the array to a String value and that can't work. What am I do wrong? Is there a other way to use an array as a model attribute? Or is that not supported at all?

Regards,
Matthias

[Felix Mayerhuber]

Hi Matthias,

as stated in the documentation (see here:
http://requirements.openengsb.org/confluence/display/MANUAL/.Models+v3.0.0)
normal arrays are not supported now in models (at least if you want to
save and load them). You could use a list instead of the array? If you
want that arrays are also supported, please create an issue for that in
the OpenEngSB dev JIRA (http://issues.openengsb.org)

Kind regards
Felix

[Matthias]

Hello Felix,

ty for the fast response at this unusual time. I can't see this documentation because I don't have an account for OESB Confluence.

I decided to use arrays because the .NET bridge didn't support Lists and our project uses C# remote connectors. Maybe that changed in the meanwhile, otherwise I'll create an issue for it.

[Andreas Pieber]

Hey Mathias,

a) I've published the manual snapshots again --> you should be able now to access them without an account

b) If you've an jira account you also have a confluence account; use the same data

c) Yes, please create an issue

Thanks and kind regards,

Andreas

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[Felix Mayerhuber]

Hi Mathias,

I just committed a solution for this issue to the master. It has one
restriction: the generic type of the array can not be a primitive type,
but only "normal" classes (String, Integer, Long, ...). Feel free to
check the new master out and test if it fits to your needs.

Kind regards,
Felix

Am 2013-02-08 04:51, schrieb Andreas Pieber:
> Hey Mathias,
>
> a) I've published the manual snapshots again --> you should be able now to
> access them without an account
> b) If you've an jira account you also have a confluence account; use the
> same data
> c) Yes, please create an issue
>
> Thanks and kind regards,
> Andreas
>
>
> On Fri, Feb 8, 2013 at 3:36 AM, Matthias <matthias....@gmail.com>wrote:
>
>> Hello Felix,
>>
>> ty for the fast response at this unusual time. I can't see this
>> documentation because I don't have an account for OESB Confluence.
>>
>> I decided to use arrays because the .NET bridge didn't support Lists and
>> our project uses C# remote connectors. Maybe that changed in the meanwhile,
>> otherwise I'll create an issue for it.
>>
>> Am Freitag, 8. Februar 2013 03:19:21 UTC+1 schrieb Felix Mayerhuber:
>>
>>> Hi Matthias,
>>>
>>> as stated in the documentation (see here:

>>> http://requirements.openengsb.**org/confluence/display/MANUAL/**
>>> .Models+v3.0.0<http://requirements.openengsb.org/confluence/display/MANUAL/.Models+v3.0.0>)

>>>
>>> normal arrays are not supported now in models (at least if you want to
>>> save and load them). You could use a list instead of the array? If you
>>> want that arrays are also supported, please create an issue for that in
>>> the OpenEngSB dev JIRA (http://issues.openengsb.org)
>>>
>>> Kind regards
>>> Felix
>>>
>>> Am 2013-02-08 01:43, schrieb Matthias:
>>>> Hello,
>>>>
>>>> In our model I use an array of models to represent a hirarchy while
>>>> communicating with connectors. When the data is checked in into the
>>>> database I don't need the hirarchy any more and the array field is set
>>> to
>>>> null (I als tried an empty array). The checkin works fine, but when I
>>> want
>>>> to check out I always get the same Exception:
>>>>
>>>> 2013-02-08 01:10:01,234 | ERROR | qtp1353424621-61 |
>>>> DefaultExceptionMapper | 49 - org.ops4j.pax.wicket.service -
>>>> 1.0.2 | Unexpected error occurred

>>>> org.apache.wicket.**WicketRuntimeException: Can't instantiate page
>>> using
>>>> constructor 'public
>>>> at.ac.tuwien.ifs.cdl.ui.sms.**hwconfig.pages.MergePage()'. Might be it

>>>> doesn't exist, may be it is not visible (public).
>>>> at

>>>> org.apache.wicket.session.**DefaultPageFactory.newPage(**
>>> DefaultPageFactory.java:196)[**49:org.ops4j.pax.wicket.**service:1.0.2]
>>>> at
>>>> org.apache.wicket.session.**DefaultPageFactory.newPage(**
>>> DefaultPageFactory.java:68)[**49:org.ops4j.pax.wicket.**service:1.0.2]
>>>> at
>>>> org.apache.wicket.session.**DefaultPageFactory.newPage(**
>>> DefaultPageFactory.java:47)[**49:org.ops4j.pax.wicket.**service:1.0.2]
>>>> at
>>>> org.apache.wicket.**DefaultMapperContext.**newPageInstance(**
>>> DefaultMapperContext.java:103)**[49:org.ops4j.pax.wicket.**service:1.0.2]
>>>
>>>> at
>>>> org.apache.wicket.request.**handler.PageProvider.**resolvePageInstance(
>>> **PageProvider.java:264)[49:org.**ops4j.pax.wicket.service:1.0.**2]
>>>> at
>>>> org.apache.wicket.request.**handler.PageProvider.**
>>> getPageInstance(PageProvider.**java:165)[49:org.ops4j.pax.**wicket.service:1.0.2]
>>>
>>>> at
>>>> org.apache.wicket.request.**handler.render.PageRenderer.**
>>> getPage(PageRenderer.java:78)[**49:org.ops4j.pax.wicket.**service:1.0.2]
>>>> at
>>>> org.apache.wicket.request.**handler.render.**
>>> WebPageRenderer.renderPage(**WebPageRenderer.java:105)[49:**
>>> org.ops4j.pax.wicket.service:**1.0.2]
>>>> at
>>>> org.apache.wicket.request.**handler.render.**WebPageRenderer.respond(**
>>> WebPageRenderer.java:224)[49:**org.ops4j.pax.wicket.service:**1.0.2]
>>>> at
>>>> org.apache.wicket.request.**handler.**RenderPageRequestHandler.**
>>> respond(**RenderPageRequestHandler.java:**167)[49:org.ops4j.pax.wicket.**service:1.0.2]
>>>
>>>> at
>>>> org.apache.wicket.request.**cycle.RequestCycle$**
>>> HandlerExecutor.respond(**RequestCycle.java:784)[49:org.**
>>> ops4j.pax.wicket.service:1.0.**2]
>>>> at
>>>> org.apache.wicket.request.**RequestHandlerStack.execute(**
>>> RequestHandlerStack.java:64)[**49:org.ops4j.pax.wicket.**service:1.0.2]
>>>> at
>>>> org.apache.wicket.request.**cycle.RequestCycle.execute(**
>>> RequestCycle.java:255)[49:org.**ops4j.pax.wicket.service:1.0.**2]
>>>> at
>>>> org.apache.wicket.request.**cycle.RequestCycle.**
>>> processRequest(RequestCycle.**java:212)[49:org.ops4j.pax.**wicket.service:1.0.2]
>>>
>>>> at
>>>> org.apache.wicket.request.**cycle.RequestCycle.**
>>> processRequestAndDetach(**RequestCycle.java:283)[49:org.**
>>> ops4j.pax.wicket.service:1.0.**2]
>>>> at
>>>> org.apache.wicket.protocol.**http.WicketFilter.**
>>> processRequest(WicketFilter.**java:188)[49:org.ops4j.pax.**wicket.service:1.0.2]
>>>
>>>> at
>>>> org.apache.wicket.protocol.**http.WicketServlet.doGet(**
>>> WicketServlet.java:137)[49:**org.ops4j.pax.wicket.service:**1.0.2]
>>>> at
>>>> javax.servlet.http.**HttpServlet.service(**
>>> HttpServlet.java:575)[92:org.**apache.geronimo.specs.**geronimo-servlet_3.0_spec:1.0]
>>>
>>>> at
>>>> javax.servlet.http.**HttpServlet.service(**
>>> HttpServlet.java:668)[92:org.**apache.geronimo.specs.**geronimo-servlet_3.0_spec:1.0]
>>>
>>>> at
>>>> org.ops4j.pax.wicket.internal.**FilterDelegator$Chain.**
>>> doFilter(FilterDelegator.java:**79)[49:org.ops4j.pax.wicket.**service:1.0.2]
>>>
>>>> at
>>>> org.apache.shiro.web.servlet.**AbstractShiroFilter.**executeChain(**AbstractShiroFilter.java:449)
>>>> at
>>>> org.apache.shiro.web.servlet.**AbstractShiroFilter$1.call(**AbstractShiroFilter.java:365)
>>>> at
>>>> org.apache.shiro.subject.**support.SubjectCallable.**
>>> doCall(SubjectCallable.java:**90)
>>>> at
>>>> org.apache.shiro.subject.**support.SubjectCallable.call(**SubjectCallable.java:83)
>>>> at
>>>> org.apache.shiro.subject.**support.DelegatingSubject.**
>>> execute(DelegatingSubject.**java:380)
>>>> at
>>>> org.apache.shiro.web.servlet.**AbstractShiroFilter.**doFilterInternal(*
>>> *AbstractShiroFilter.java:362)
>>>> at
>>>> org.apache.shiro.web.servlet.**OncePerRequestFilter.doFilter(**OncePerRequestFilter.java:125)
>>>> at
>>>> org.ops4j.pax.wicket.internal.**FilterDelegator$Chain.**
>>> doFilter(FilterDelegator.java:**77)[49:org.ops4j.pax.wicket.**service:1.0.2]
>>>
>>>> at
>>>> org.openengsb.ui.common.util.**ContextIdFilter.doFilter(**ContextIdFilter.java:67)
>>>> at
>>>> org.ops4j.pax.wicket.internal.**FilterDelegator$Chain.**
>>> doFilter(FilterDelegator.java:**77)[49:org.ops4j.pax.wicket.**service:1.0.2]
>>>
>>>> at
>>>> org.ops4j.pax.wicket.internal.**FilterDelegator.doFilter(**
>>> FilterDelegator.java:61)[49:**org.ops4j.pax.wicket.service:**1.0.2]
>>>> at
>>>> org.ops4j.pax.wicket.internal.**ServletProxy$**
>>> ServletInvocationHandler.**invoke(ServletProxy.java:72)[**
>>> 49:org.ops4j.pax.wicket.**service:1.0.2]
>>>> at $Proxy59.service(Unknown
>>>> Source)[49:org.ops4j.pax.**wicket.service:1.0.2]
>>>> at sun.reflect.**NativeMethodAccessorImpl.**invoke0(Native
>>>> Method)[:1.6.0_31]
>>>> at
>>>> sun.reflect.**NativeMethodAccessorImpl.**invoke(**
>>> NativeMethodAccessorImpl.java:**39)[:1.6.0_31]
>>>> at
>>>> sun.reflect.**DelegatingMethodAccessorImpl.**invoke(**
>>> DelegatingMethodAccessorImpl.**java:25)[:1.6.0_31]
>>>> at java.lang.reflect.Method.**invoke(Method.java:597)[:1.6.**0_31]
>>>> at
>>>> org.ops4j.pax.web.service.**internal.HttpServiceStarted$2.**
>>> invoke(HttpServiceStarted.**java:242)[100:org.ops4j.pax.**web.pax-web-runtime:2.1.0]
>>>
>>>> at org.ops4j.pax.web.service.**internal.$Proxy60.service(**Unknown
>>>> Source)[100:org.ops4j.pax.web.**pax-web-runtime:2.1.0]
>>>> at
>>>> org.eclipse.jetty.servlet.**ServletHolder.handle(**
>>> ServletHolder.java:648)[97:**org.eclipse.jetty.aggregate.**
>>> jetty-all-server:8.1.7.**v20120910]
>>>> at
>>>> org.eclipse.jetty.servlet.**ServletHandler.doHandle(**
>>> ServletHandler.java:455)[97:**org.eclipse.jetty.aggregate.**
>>> jetty-all-server:8.1.7.**v20120910]
>>>> at
>>>> org.ops4j.pax.web.service.**jetty.internal.**HttpServiceServletHandler.
>>> **doHandle(**HttpServiceServletHandler.**java:70)[101:org.ops4j.pax.**web.pax-web-jetty:2.1.0]
>>>
>>>> at
>>>> org.eclipse.jetty.server.**handler.ScopedHandler.handle(**
>>> ScopedHandler.java:137)[97:**org.eclipse.jetty.aggregate.**
>>> jetty-all-server:8.1.7.**v20120910]
>>>> at
>>>> org.eclipse.jetty.security.**SecurityHandler.handle(**
>>> SecurityHandler.java:559)[97:**org.eclipse.jetty.aggregate.**
>>> jetty-all-server:8.1.7.**v20120910]
>>>> at
>>>> org.eclipse.jetty.server.**session.SessionHandler.**
>>> doHandle(SessionHandler.java:**231)[97:org.eclipse.jetty.**
>>> aggregate.jetty-all-server:8.**1.7.v20120910]
>>>> at
>>>> org.eclipse.jetty.server.**handler.ContextHandler.**
>>> doHandle(ContextHandler.java:**1072)[97:org.eclipse.jetty.**
>>> aggregate.jetty-all-server:8.**1.7.v20120910]
>>>> at
>>>> org.ops4j.pax.web.service.**jetty.internal.**
>>> HttpServiceContext.doHandle(**HttpServiceContext.java:173)[**
>>> 101:org.ops4j.pax.web.pax-web-**jetty:2.1.0]
>>>> at
>>>> org.eclipse.jetty.servlet.**ServletHandler.doScope(**
>>> ServletHandler.java:382)[97:**org.eclipse.jetty.aggregate.**
>>> jetty-all-server:8.1.7.**v20120910]
>>>> at
>>>> org.eclipse.jetty.server.**session.SessionHandler.**
>>> doScope(SessionHandler.java:**193)[97:org.eclipse.jetty.**
>>> aggregate.jetty-all-server:8.**1.7.v20120910]
>>>> at
>>>> org.eclipse.jetty.server.**handler.ContextHandler.**
>>> doScope(ContextHandler.java:**1006)[97:org.eclipse.jetty.**
>>> aggregate.jetty-all-server:8.**1.7.v20120910]
>>>> at
>>>> org.eclipse.jetty.server.**handler.ScopedHandler.handle(**
>>> ScopedHandler.java:135)[97:**org.eclipse.jetty.aggregate.**
>>> jetty-all-server:8.1.7.**v20120910]
>>>> at
>>>> org.ops4j.pax.web.service.**jetty.internal.**
>>> JettyServerHandlerCollection.**handle(**JettyServerHandlerCollection.**
>>> java:74)[101:org.ops4j.pax.**web.pax-web-jetty:2.1.0]
>>>> at
>>>> org.eclipse.jetty.server.**handler.HandlerWrapper.handle(**
>>> HandlerWrapper.java:116)[97:**org.eclipse.jetty.aggregate.**
>>> jetty-all-server:8.1.7.**v20120910]
>>>> at
>>>> org.eclipse.jetty.server.**Server.handle(Server.java:365)**
>>> [97:org.eclipse.jetty.**aggregate.jetty-all-server:8.**1.7.v20120910]
>>>> at
>>>> org.eclipse.jetty.server.**AbstractHttpConnection.**handleRequest(**
>>> AbstractHttpConnection.java:**485)[97:org.eclipse.jetty.**
>>> aggregate.jetty-all-server:8.**1.7.v20120910]
>>>> at
>>>> org.eclipse.jetty.server.**AbstractHttpConnection.**headerComplete(**
>>> AbstractHttpConnection.java:**926)[97:org.eclipse.jetty.**
>>> aggregate.jetty-all-server:8.**1.7.v20120910]
>>>> at
>>>> org.eclipse.jetty.server.**AbstractHttpConnection$**
>>> RequestHandler.headerComplete(**AbstractHttpConnection.java:**
>>> 988)[97:org.eclipse.jetty.**aggregate.jetty-all-server:8.**1.7.v20120910]
>>>
>>>> at
>>>> org.eclipse.jetty.http.**HttpParser.parseNext(**
>>> HttpParser.java:635)[97:org.**eclipse.jetty.aggregate.jetty-**all-server:8.1.7.v20120910]
>>>
>>>> at
>>>> org.eclipse.jetty.http.**HttpParser.parseAvailable(**
>>> HttpParser.java:235)[97:org.**eclipse.jetty.aggregate.jetty-**all-server:8.1.7.v20120910]
>>>
>>>> at
>>>> org.eclipse.jetty.server.**AsyncHttpConnection.handle(**
>>> AsyncHttpConnection.java:82)[**97:org.eclipse.jetty.**
>>> aggregate.jetty-all-server:8.**1.7.v20120910]
>>>> at
>>>> org.eclipse.jetty.io.nio.**SelectChannelEndPoint.handle(**
>>> SelectChannelEndPoint.java:**627)[97:org.eclipse.jetty.**
>>> aggregate.jetty-all-server:8.**1.7.v20120910]
>>>> at
>>>> org.eclipse.jetty.io.nio.**SelectChannelEndPoint$1.run(**
>>> SelectChannelEndPoint.java:51)**[97:org.eclipse.jetty.**
>>> aggregate.jetty-all-server:8.**1.7.v20120910]
>>>> at
>>>> org.eclipse.jetty.util.thread.**QueuedThreadPool.runJob(**
>>> QueuedThreadPool.java:608)[97:**org.eclipse.jetty.aggregate.**
>>> jetty-all-server:8.1.7.**v20120910]
>>>> at
>>>> org.eclipse.jetty.util.thread.**QueuedThreadPool$3.run(**
>>> QueuedThreadPool.java:543)[97:**org.eclipse.jetty.aggregate.**
>>> jetty-all-server:8.1.7.**v20120910]
>>>> at java.lang.Thread.run(Thread.**java:662)[:1.6.0_31]
>>>> Caused by: java.lang.reflect.**InvocationTargetException
>>>> at sun.reflect.**NativeConstructorAccessorImpl.**newInstance0(Native
>>>> Method)[:1.6.0_31]
>>>> at
>>>> sun.reflect.**NativeConstructorAccessorImpl.**newInstance(**
>>> NativeConstructorAccessorImpl.**java:39)[:1.6.0_31]
>>>> at
>>>> sun.reflect.**DelegatingConstructorAccessorI**mpl.newInstance(**
>>> DelegatingConstructorAccessorI**mpl.java:27)[:1.6.0_31]
>>>> at
>>>> java.lang.reflect.Constructor.**newInstance(Constructor.java:**513)[:1.6.0_31]
>>>> at
>>>> org.apache.wicket.session.**DefaultPageFactory.newPage(**
>>> DefaultPageFactory.java:177)[**49:org.ops4j.pax.wicket.**service:1.0.2]
>>>> ... 64 more
>>>> Caused by: java.lang.**IllegalArgumentException: Can not set
>>>> [Lat.ac.tuwien.ifs.cdl.domain.**cdg.model.Component; field
>>>> at.ac.tuwien.ifs.cdl.domain.**cdg.model.Component.**childComponents to
>>>> java.lang.String
>>>> at
>>>> sun.reflect.**UnsafeFieldAccessorImpl.**throwSetIllegalArgumentExcepti*
>>> *on(UnsafeFieldAccessorImpl.**java:146)[:1.6.0_31]
>>>> at
>>>> sun.reflect.**UnsafeFieldAccessorImpl.**throwSetIllegalArgumentExcepti*
>>> *on(UnsafeFieldAccessorImpl.**java:150)[:1.6.0_31]
>>>> at
>>>> sun.reflect.**UnsafeObjectFieldAccessorImpl.**set(**
>>> UnsafeObjectFieldAccessorImpl.**java:63)[:1.6.0_31]
>>>> at java.lang.reflect.Field.set(**Field.java:657)[:1.6.0_31]
>>>> at
>>>> org.openengsb.core.util.**ModelUtils.**tryToSetValueThroughField(**ModelUtils.java:183)
>>>> at
>>>> org.openengsb.core.util.**ModelUtils.createModel(**ModelUtils.java:155)
>>>> at
>>>> org.openengsb.core.ekb.common.**EDBConverter.**
>>> convertEDBObjectToUncheckedMod**el(EDBConverter.java:132)
>>>> at
>>>> org.openengsb.core.ekb.common.**EDBConverter.**convertEDBObjectToModel(
>>> **EDBConverter.java:63)
>>>> at
>>>> org.openengsb.core.ekb.common.**EDBConverter.**
>>> convertEDBObjectsToModelObject**s(EDBConverter.java:73)
>>>> at
>>>> org.openengsb.core.ekb.**persistence.query.edb.**internal.**
>>> QueryInterfaceService.**queryForModelsAtTimestamp(**QueryInterfaceService.java:99)
>>>
>>>> at
>>>> org.openengsb.core.ekb.**persistence.query.edb.**internal.**
>>> QueryInterfaceService.**queryForModels(**QueryInterfaceService.java:86)
>>>> at Proxye1346624_7526_4637_8c15_**c6192eae0d36.queryForModels(
>>> **Unknown
>>>> Source)
>>>> at Proxy00c93ae7_02a8_4c94_b163_**30aaae6ef04c.queryForModels(
>>> **Unknown
>>>> Source)
>>>> at sun.reflect.**NativeMethodAccessorImpl.**invoke0(Native
>>>> Method)[:1.6.0_31]
>>>> at
>>>> sun.reflect.**NativeMethodAccessorImpl.**invoke(**
>>> NativeMethodAccessorImpl.java:**39)[:1.6.0_31]
>>>> at
>>>> sun.reflect.**DelegatingMethodAccessorImpl.**invoke(**
>>> DelegatingMethodAccessorImpl.**java:25)[:1.6.0_31]
>>>> at java.lang.reflect.Method.**invoke(Method.java:597)[:1.6.**0_31]
>>>> at
>>>> org.ops4j.pax.wicket.util.**proxy.LazyInitProxyFactory$**
>>> JdkHandler.invoke(**LazyInitProxyFactory.java:238)**
>>> [49:org.ops4j.pax.wicket.**service:1.0.2]
>>>> at org.ops4j.pax.wicket.util.**proxy.$Proxy88.queryForModels(*
>>> *Unknown
>>>> Source)
>>>> at
>>>> at.ac.tuwien.ifs.cdl.ui.sms.**hwconfig.pages.MergePage.**
>>> initContent(MergePage.java:**121)
>>>> at
>>>> at.ac.tuwien.ifs.cdl.ui.sms.**hwconfig.pages.MergePage.<**init>(MergePage.java:60)