On 24 November 2010 13:33, Simone Tripodi <[email protected]> wrote:
> Hi all guys,
> I need to bind a Provider generated by ASM with injection points
> generated on the fly, everything gone fine until injection points
> resolution by Guice, and got the errors below; I tried to hack the
> com.google.inject.internal.MapMaker class loader, adding the new class
> definition, but without success.
>
it's not an issue with MapMaker as such, but the Guice LineNumbers utility
that attempts to supply meaningful source locations for debugging bindings
public LineNumbers(Class type) throws IOException {
this.type = type;
if (!type.isArray()) {
InputStream in = type.getResourceAsStream("/" +
type.getName().replace('.', '/') + ".class");
Preconditions.checkArgument(in != null, "Cannot find bytecode for %s",
type);
new ClassReader(in).accept(new LineNumberReader(),
ClassReader.SKIP_FRAMES);
}
}
^ this expects to find a class resource - but of course if you're generating
the provider class completely from scratch with ASM then it won't exist :/
to workaround this issue you could supply your own source when binding
your generated provider - this should then bypass the LineNumber code:
Binder generatedCodeBinder = binder.withSource( "[generated]" );
generatedCodeBinder.bind( ...etc...
HTH
Does someone know how guice resolved that issue when enhancing the
> classes with AOP?
>
it's not an issue with Guice's internal AOP because that's applied on top
of classes already registered with the injector - so the LineNumbers code
never has to handle internal proxies
> Many thanks in advance, have a nice day!
> Simo
>
> com.google.inject.internal.ComputationException:
> java.lang.IllegalArgumentException: Cannot find bytecode for class
> org.mybatis.guice.datasource.helper.FormattedProvider
> at
> com.google.inject.internal.MapMaker$StrategyImpl.compute(MapMaker.java:553)
> at
> com.google.inject.internal.MapMaker$StrategyImpl.compute(MapMaker.java:419)
> at
> com.google.inject.internal.CustomConcurrentHashMap$ComputingImpl.get(CustomConcurrentHashMap.java:2041)
> at
> com.google.inject.internal.StackTraceElements.forMember(StackTraceElements.java:53)
> at
> com.google.inject.internal.Errors.formatInjectionPoint(Errors.java:635)
> at com.google.inject.internal.Errors.formatSource(Errors.java:597)
> at com.google.inject.internal.Errors.format(Errors.java:474)
> at
> com.google.inject.CreationException.getMessage(CreationException.java:48)
> at java.lang.Throwable.getLocalizedMessage(Throwable.java:267)
> at java.lang.Throwable.toString(Throwable.java:344)
> at java.lang.String.valueOf(String.java:2615)
> at java.io.PrintWriter.print(PrintWriter.java:546)
> at java.io.PrintWriter.println(PrintWriter.java:683)
> at java.lang.Throwable.printStackTrace(Throwable.java:510)
> at org.junit.runner.notification.Failure.getTrace(Failure.java:65)
> at
> org.eclipse.jdt.internal.junit4.runner.JUnit4TestListener.testFailure(JUnit4TestListener.java:68)
> at
> org.junit.runner.notification.RunNotifier$4.notifyListener(RunNotifier.java:100)
> at
> org.junit.runner.notification.RunNotifier$SafeNotifier.run(RunNotifier.java:41)
> at
> org.junit.runner.notification.RunNotifier.fireTestFailure(RunNotifier.java:97)
> at
> org.junit.internal.runners.ErrorReportingRunner.runCause(ErrorReportingRunner.java:57)
> at
> org.junit.internal.runners.ErrorReportingRunner.run(ErrorReportingRunner.java:34)
> at
> org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:49)
> at
> org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
> at
> org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:467)
> at
> org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:683)
> at
> org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:390)
> at
> org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:197)
> Caused by: java.lang.IllegalArgumentException: Cannot find bytecode
> for class org.mybatis.guice.datasource.helper.FormattedProvider
> at
> com.google.inject.internal.Preconditions.checkArgument(Preconditions.java:113)
> at
> com.google.inject.internal.LineNumbers.<init>(LineNumbers.java:57)
> at
> com.google.inject.internal.StackTraceElements$1.apply(StackTraceElements.java:36)
> at
> com.google.inject.internal.StackTraceElements$1.apply(StackTraceElements.java:33)
> at
> com.google.inject.internal.MapMaker$StrategyImpl.compute(MapMaker.java:549)
> ... 26 more
>
>
>
> http://people.apache.org/~simonetripodi/
> http://www.99soft.org/
>
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>
--
Cheers, Stuart
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