play fails to compile after injecting mvp4g

[bhomass]

I have used mvp4g successfully before. Now I am trying to get it to
work inside Play. There is no compilation error inside eclipse, but
fails either when I run it or compiling it. the error dump is long,
here is a partial listing

java.lang.ClassNotFoundException: client.presenter.UserCreatePresenter
at java.net.URLClassLoader$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Unknown Source)
at
com.google.gwt.dev.javac.TypeOracleMediator.resolveAnnotationValue(Ty
peOracleMediator.java:727)
at
com.google.gwt.dev.javac.TypeOracleMediator.resolveAnnotationValue(Ty
peOracleMediator.java:666)
at
com.google.gwt.dev.javac.TypeOracleMediator.createAnnotation(TypeOrac
leMediator.java:469)
at
com.google.gwt.dev.javac.TypeOracleMediator.resolveAnnotation(TypeOra
cleMediator.java:625)
at
com.google.gwt.dev.javac.TypeOracleMediator.resolveAnnotations(TypeOr
acleMediator.java:640)
at
com.google.gwt.dev.javac.TypeOracleMediator.resolveMethod(TypeOracleM
ediator.java:980)
at
com.google.gwt.dev.javac.TypeOracleMediator.resolveClass(TypeOracleMe
diator.java:839)
at
com.google.gwt.dev.javac.TypeOracleMediator.addNewTypes(TypeOracleMed
iator.java:411)
at
com.google.gwt.dev.javac.TypeOracleMediatorFromSource.addNewUnits(Typ
eOracleMediatorFromSource.java:54)
at
com.google.gwt.dev.javac.CompilationState.assimilateUnits(Compilation
State.java:165)
at
com.google.gwt.dev.javac.CompilationState.<init>(CompilationState.jav
a:82)
at
com.google.gwt.dev.javac.CompilationStateBuilder.doBuildFrom(Compilat
ionStateBuilder.java:392)
at
com.google.gwt.dev.javac.CompilationStateBuilder.buildFrom(Compilatio
nStateBuilder.java:275)
at
com.google.gwt.dev.cfg.ModuleDef.getCompilationState(ModuleDef.java:3
25)
at com.google.gwt.dev.Precompile.precompile(Precompile.java:
512)
at com.google.gwt.dev.Precompile.precompile(Precompile.java:
495)
at com.google.gwt.dev.Precompile.precompile(Precompile.java:
407)
at com.google.gwt.dev.Compiler.run(Compiler.java:215)
at com.google.gwt.dev.Compiler.run(Compiler.java:187)
at com.google.gwt.dev.Compiler$1.run(Compiler.java:159)
at
com.google.gwt.dev.CompileTaskRunner.doRun(CompileTaskRunner.java:87)

at
com.google.gwt.dev.CompileTaskRunner.runWithAppropriateLogger(Compile
TaskRunner.java:81)
at com.google.gwt.dev.Compiler.main(Compiler.java:166)
[ERROR] Annotation error: expected class java.lang.Class, got
null
Resolving client.presenter.RootPresenter
Found type 'client.presenter.RootPresenter'
[ERROR] Annotation error: cannot resolve client.view.RootView
java.lang.ClassNotFoundException: client.view.RootView
at java.net.URLClassLoader$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Unknown Source)
at
com.google.gwt.dev.javac.TypeOracleMediator.resolveAnnotationValue(Ty
peOracleMediator.java:727)
at
com.google.gwt.dev.javac.TypeOracleMediator.createAnnotation(TypeOrac
leMediator.java:469)
at
com.google.gwt.dev.javac.TypeOracleMediator.resolveAnnotation(TypeOra
cleMediator.java:625)
at
com.google.gwt.dev.javac.TypeOracleMediator.resolveAnnotations(TypeOr
acleMediator.java:640)
at
com.google.gwt.dev.javac.TypeOracleMediator.resolveClass(TypeOracleMe
diator.java:786)
at
com.google.gwt.dev.javac.TypeOracleMediator.addNewTypes(TypeOracleMed
iator.java:411)
at
com.google.gwt.dev.javac.TypeOracleMediatorFromSource.addNewUnits(Typ
eOracleMediatorFromSource.java:54)
at
com.google.gwt.dev.javac.CompilationState.assimilateUnits(Compilation
State.java:165)
at
com.google.gwt.dev.javac.CompilationState.<init>(CompilationState.jav
a:82)
at
com.google.gwt.dev.javac.CompilationStateBuilder.doBuildFrom(Compilat
ionStateBuilder.java:392)
at
com.google.gwt.dev.javac.CompilationStateBuilder.buildFrom(Compilatio
nStateBuilder.java:275)
at
com.google.gwt.dev.cfg.ModuleDef.getCompilationState(ModuleDef.java:3
25)
at com.google.gwt.dev.Precompile.precompile(Precompile.java:
512)
at com.google.gwt.dev.Precompile.precompile(Precompile.java:
495)
at com.google.gwt.dev.Precompile.precompile(Precompile.java:
407)
at com.google.gwt.dev.Compiler.run(Compiler.java:215)
at com.google.gwt.dev.Compiler.run(Compiler.java:187)
at com.google.gwt.dev.Compiler$1.run(Compiler.java:159)
at
com.google.gwt.dev.CompileTaskRunner.doRun(CompileTaskRunner.java:87)

at
com.google.gwt.dev.CompileTaskRunner.runWithAppropriateLogger(Compile
TaskRunner.java:81)
at com.google.gwt.dev.Compiler.main(Compiler.java:166)
Resolving client.presenter.UserCreatePresenter
Found type 'client.presenter.UserCreatePresenter'
[ERROR] Annotation error: cannot resolve
client.view.UserCreateView
java.lang.ClassNotFoundException: client.view.UserCreateView
at java.net.URLClassLoader$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Unknown Source)
at
com.google.gwt.dev.javac.TypeOracleMediator.resolveAnnotationValue(Ty
peOracleMediator.java:727)
at
com.google.gwt.dev.javac.TypeOracleMediator.createAnnotation(TypeOrac
leMediator.java:469)
at
com.google.gwt.dev.javac.TypeOracleMediator.resolveAnnotation(TypeOra
cleMediator.java:625)
at
com.google.gwt.dev.javac.TypeOracleMediator.resolveAnnotations(TypeOr
acleMediator.java:640)
at
com.google.gwt.dev.javac.TypeOracleMediator.resolveClass(TypeOracleMe
diator.java:786)
at
com.google.gwt.dev.javac.TypeOracleMediator.addNewTypes(TypeOracleMed
iator.java:411)
at
com.google.gwt.dev.javac.TypeOracleMediatorFromSource.addNewUnits(Typ
eOracleMediatorFromSource.java:54)
at
com.google.gwt.dev.javac.CompilationState.assimilateUnits(Compilation
State.java:165)
at
com.google.gwt.dev.javac.CompilationState.<init>(CompilationState.jav
a:82)
at
com.google.gwt.dev.javac.CompilationStateBuilder.doBuildFrom(Compilat
ionStateBuilder.java:392)
at
com.google.gwt.dev.javac.CompilationStateBuilder.buildFrom(Compilatio
nStateBuilder.java:275)
at
com.google.gwt.dev.cfg.ModuleDef.getCompilationState(ModuleDef.java:3
25)
at com.google.gwt.dev.Precompile.precompile(Precompile.java:
512)
at com.google.gwt.dev.Precompile.precompile(Precompile.java:
495)
at com.google.gwt.dev.Precompile.precompile(Precompile.java:
407)
at com.google.gwt.dev.Compiler.run(Compiler.java:215)
at com.google.gwt.dev.Compiler.run(Compiler.java:187)
at com.google.gwt.dev.Compiler$1.run(Compiler.java:159)
at
com.google.gwt.dev.CompileTaskRunner.doRun(CompileTaskRunner.java:87)

at
com.google.gwt.dev.CompileTaskRunner.runWithAppropriateLogger(Compile
TaskRunner.java:81)
at com.google.gwt.dev.Compiler.main(Compiler.java:166)
Resolving client.presenter.UserDisplayPresenter
Found type 'client.presenter.UserDisplayPresenter'
[ERROR] Annotation error: cannot resolve
client.view.UserDisplayView
java.lang.ClassNotFoundException: client.view.UserDisplayView
at java.net.URLClassLoader$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Unknown Source)
at
com.google.gwt.dev.javac.TypeOracleMediator.resolveAnnotationValue(Ty
peOracleMediator.java:727)
at
com.google.gwt.dev.javac.TypeOracleMediator.createAnnotation(TypeOrac
leMediator.java:469)
at
com.google.gwt.dev.javac.TypeOracleMediator.resolveAnnotation(TypeOra
cleMediator.java:625)
at
com.google.gwt.dev.javac.TypeOracleMediator.resolveAnnotations(TypeOr
acleMediator.java:640)
at
com.google.gwt.dev.javac.TypeOracleMediator.resolveClass(TypeOracleMe
diator.java:786)
at
com.google.gwt.dev.javac.TypeOracleMediator.addNewTypes(TypeOracleMed
iator.java:411)
at
com.google.gwt.dev.javac.TypeOracleMediatorFromSource.addNewUnits(Typ
eOracleMediatorFromSource.java:54)
at
com.google.gwt.dev.javac.CompilationState.assimilateUnits(Compilation
State.java:165)
at
com.google.gwt.dev.javac.CompilationState.<init>(CompilationState.jav
a:82)
at
com.google.gwt.dev.javac.CompilationStateBuilder.doBuildFrom(Compilat
ionStateBuilder.java:392)
at
com.google.gwt.dev.javac.CompilationStateBuilder.buildFrom(Compilatio
nStateBuilder.java:275)
at
com.google.gwt.dev.cfg.ModuleDef.getCompilationState(ModuleDef.java:3
25)
at com.google.gwt.dev.Precompile.precompile(Precompile.java:
512)
at com.google.gwt.dev.Precompile.precompile(Precompile.java:
495)
at com.google.gwt.dev.Precompile.precompile(Precompile.java:
407)
at com.google.gwt.dev.Compiler.run(Compiler.java:215)
at com.google.gwt.dev.Compiler.run(Compiler.java:187)
at com.google.gwt.dev.Compiler$1.run(Compiler.java:159)
at
com.google.gwt.dev.CompileTaskRunner.doRun(CompileTaskRunner.java:87)

at
com.google.gwt.dev.CompileTaskRunner.runWithAppropriateLogger(Compile
TaskRunner.java:81)
at com.google.gwt.dev.Compiler.main(Compiler.java:166)
Scanning for additional dependencies: jar:file:/C:/Users/Bruce_Ho/
myGwt2App/l
ib/mvp4g-1.3.1.jar!/com/mvp4g/client/Mvp4gEntryPoint.java
Computing all possible rebind results for
'com.mvp4g.client.Mvp4gModule'
Rebinding com.mvp4g.client.Mvp4gModule
Invoking generator com.mvp4g.util.Mvp4gGenerator
Generating source for com.mvp4g.client.Mvp4gModule
Generating source for com.mvp4g.client.Mvp4gModule
1784 classes scanned in 4 ms.
[ERROR] Generator 'com.mvp4g.util.Mvp4gGenerator' threw
an except
ion while rebinding 'com.mvp4g.client.Mvp4gModule'
java.lang.IllegalArgumentException: object is not an instance of
declaring class

at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown
Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at com.google.gwt.dev.javac.AnnotationProxyFactory
$AnnotationProxyInvoca
tionHandler.invoke(AnnotationProxyFactory.java:247)
at $Proxy9.view(Unknown Source)
at
com.mvp4g.util.config.loader.annotation.PresenterAnnotationsLoader.lo
adElementWithServices(PresenterAnnotationsLoader.java:66)
at
com.mvp4g.util.config.loader.annotation.PresenterAnnotationsLoader.lo
adElementWithServices(PresenterAnnotationsLoader.java:34)
at
com.mvp4g.util.config.loader.annotation.Mvp4gAnnotationsWithServiceLo
ader.loadElement(Mvp4gAnnotationsWithServiceLoader.java:50)
at
com.mvp4g.util.config.loader.annotation.Mvp4gAnnotationsLoader.load(M
vp4gAnnotationsLoader.java:54)
at
com.mvp4g.util.config.Mvp4gConfiguration.loadPresenters(Mvp4gConfigur
ation.java:1233)
at
com.mvp4g.util.config.Mvp4gConfiguration.load(Mvp4gConfiguration.java
:185)
at
com.mvp4g.util.Mvp4gGenerator.writeClass(Mvp4gGenerator.java:158)
at
com.mvp4g.util.Mvp4gGenerator.createClass(Mvp4gGenerator.java:96)
at com.mvp4g.util.Mvp4gGenerator.generate(Mvp4gGenerator.java:
77)
at
com.google.gwt.core.ext.GeneratorExtWrapper.generate(GeneratorExtWrap
per.java:48)
at
com.google.gwt.core.ext.GeneratorExtWrapper.generateIncrementally(Gen
eratorExtWrapper.java:60)
at
com.google.gwt.dev.javac.StandardGeneratorContext.runGeneratorIncreme
ntally(StandardGeneratorContext.java:662)
at
com.google.gwt.dev.cfg.RuleGenerateWith.realize(RuleGenerateWith.java
:41)
at com.google.gwt.dev.shell.StandardRebindOracle
$Rebinder.rebind(Standar
dRebindOracle.java:74)
at
com.google.gwt.dev.shell.StandardRebindOracle.rebind(StandardRebindOr
acle.java:259)
at
com.google.gwt.dev.shell.StandardRebindOracle.rebind(StandardRebindOr
acle.java:248)
at
com.google.gwt.dev.DistillerRebindPermutationOracle.getAllPossibleReb
indAnswers(DistillerRebindPermutationOracle.java:91)
at
com.google.gwt.dev.jdt.WebModeCompilerFrontEnd.doFindAdditionalTypesU
singRebinds(WebModeCompilerFrontEnd.java:106)
at com.google.gwt.dev.jdt.AbstractCompiler$Sandbox
$CompilerImpl.process(
AbstractCompiler.java:254)
at
org.eclipse.jdt.internal.compiler.Compiler.compile(Compiler.java:444)

at com.google.gwt.dev.jdt.AbstractCompiler$Sandbox
$CompilerImpl.compile(
AbstractCompiler.java:175)
at com.google.gwt.dev.jdt.AbstractCompiler$Sandbox
$CompilerImpl.compile(
AbstractCompiler.java:288)
at com.google.gwt.dev.jdt.AbstractCompiler$Sandbox
$CompilerImpl.access$4
00(AbstractCompiler.java:145)
at
com.google.gwt.dev.jdt.AbstractCompiler.compile(AbstractCompiler.java
:632)
at
com.google.gwt.dev.jdt.BasicWebModeCompiler.getCompilationUnitDeclara
tions(BasicWebModeCompiler.java:124)
at
com.google.gwt.dev.jdt.WebModeCompilerFrontEnd.getCompilationUnitDecl
arations(WebModeCompilerFrontEnd.java:54)
at
com.google.gwt.dev.jjs.JavaToJavaScriptCompiler.precompile(JavaToJava
ScriptCompiler.java:517)
at
com.google.gwt.dev.jjs.JavaScriptCompiler.precompile(JavaScriptCompil
er.java:35)
at com.google.gwt.dev.Precompile.precompile(Precompile.java:
541)
at com.google.gwt.dev.Precompile.precompile(Precompile.java:
495)
at com.google.gwt.dev.Precompile.precompile(Precompile.java:
407)
at com.google.gwt.dev.Compiler.run(Compiler.java:215)
at com.google.gwt.dev.Compiler.run(Compiler.java:187)
at com.google.gwt.dev.Compiler$1.run(Compiler.java:159)
at
com.google.gwt.dev.CompileTaskRunner.doRun(CompileTaskRunner.java:87)

at
com.google.gwt.dev.CompileTaskRunner.runWithAppropriateLogger(Compile
TaskRunner.java:81)
at com.google.gwt.dev.Compiler.main(Compiler.java:166)
[ERROR] Errors in 'jar:file:/C:/Users/Bruce_Ho/myGwt2App/lib/
mvp4g-1.3.1.jar!
/com/mvp4g/client/Mvp4gEntryPoint.java'
[ERROR] Line 34: Failed to resolve
'com.mvp4g.client.Mvp4gModule' via def
erred binding
Scanning for additional dependencies: jar:file:/C:/Users/Bruce_Ho/
myGwt2App/l
ib/gwt-user-2.2.0.jar!/com/google/gwt/core/client/impl/
SchedulerImpl.java
[WARN] For the following type(s), generated source was never
committed (di
d you forget to call commit()?)
[WARN] com.mvp4g.client.Mvp4gModuleImpl
[ERROR] Cannot proceed due to previous errors


here is the key suspect:

'object is not an instance of declaring class'

it seems there are two separate path to Mvp4gModuleImpl. is that
right?

the other clear error message:

'java.lang.ClassNotFoundException:
client.presenter.UserCreatePresenter'

this is funny, because when resolving for the presenter outside the
EventBus, it does find it

00:00:07.327 [SPAM] Found type 'client.presenter.RootPresenter'

in another path, right after
00:00:07.311 [SPAM] Found type 'client.TestEventBus'

it says
00:00:07.317 [ERROR] Annotation error: cannot resolve
client.presenter.UserDisplayPresenter

this again shows it is trying to resolve the presenter class thru
TypeOracleMediator.

I posted this on Play forum with no reply. I am hoping some one
familiar with TypeOracleMediator can see what is wrong.