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From "Stepan Mishura" <stepan.mish...@gmail.com>
Subject Re: Version Conflict with bcel?
Date Mon, 10 Apr 2006 05:45:55 GMT
On 4/9/06, Soeren Strassfeld wrote:
>
> Hi Stepan,
>
> first, I did a simple xsl Transformation:
>
> TransformerFactory f = TransformerFactory.newInstance();
> Transformer t = f.newTransformer(new StreamSource(new
> FileInputStream("foo.xsl")));
> t.transform(new StreamSource(new FileInputStream("foo.xml")),new
> StreamResult(System.out));
>
> (foo.xml and foo.xsl are really simple, actually taken from the Xalan
> Examples)
>
> This works fine on both, Sun jdk1.5 and Harmony.
> When running with -verbose, I noticed that harmony uses
> org.apache.xalan.processor.TransformerFactoryImpl
> while Sun uses
> com.sun.org.apache.xalan.internal.xsltc.trax.TransformerImpl
> as default javax.xml.transform.TransformerFactory
>
> Actually all Apache classes within the Sun JDK seem
> to be repackaged to com.sun.org.apache.<project>.internal.*
>
> After that test, I forced harmony to use the compiling
> TransformerFactory with
> System.setProperty("javax.xml.transform.TransformerFactory",
>               "org.apache.xalan.xsltc.trax.TransformerFactoryImpl");
>
> (Does not work on sun jdk1.5 because of the repackaging)
>
> Now the bcel classes are loaded as shown in the harmony -verbose
> output. XSL Transformation still works fine on harmony.
>
> When I now run the test with
> -Xbootclasspath/p:bcel-5.2rc1.jar
> I get a
> java.lang.NullPointerException
>       at
> org.apache.bcel.util.InstructionFinder.search(InstructionFinder.java:226)
>       at
> org.apache.bcel.util.InstructionFinder.search(InstructionFinder.java:250)
>       at
> org.apache.xalan.xsltc.compiler.Mode.peepHoleOptimization(Mode.java:1442)
>       at
> org.apache.xalan.xsltc.compiler.Mode.compileApplyTemplates(Mode.java:1056)
>       at
> org.apache.xalan.xsltc.compiler.Stylesheet.compileModes(Stylesheet.java
> :580)
>       at
> org.apache.xalan.xsltc.compiler.Stylesheet.translate(Stylesheet.java:695)
>       at org.apache.xalan.xsltc.compiler.XSLTC.compile(XSLTC.java:335)
>       at org.apache.xalan.xsltc.compiler.XSLTC.compile(XSLTC.java:410)
>       at
> org.apache.xalan.xsltc.trax.TransformerFactoryImpl.newTemplates(
> TransformerFactoryImpl.java:720)
>       at
> org.apache.xalan.xsltc.trax.TransformerFactoryImpl.newTransformer(
> TransformerFactoryImpl.java:548)
>       at Main.main(Main.java:14)
>
> The harmony-bcel InstructionFinder class uses jakarta.regexp, while
> the 5.2rc1 InstructionFinder uses java.util.regexp, which could be
> the Reason for the NullPointerException.


Right. The current implementation of java.util.regexp package contains
stubs. I think the problem will be resolved when stub implementation will be
replaced with implementation from HARMONY-39 contribution.

Thanks,
Stepan.

Anyway, I think the interesting part of this test is, that sun repackages
> external packages to com.sun. packages to avoid Version conflicts.
> Although I don´t like this Idea, as this is some kind of "fork" to me,
> I don´t see any better solution for this kind of Problem!?
>
> Thanks,
> Soeren
>
>
> Stepan Mishura schrieb:
> > On 4/8/06, Soeren Strassfeld wrote:
> >
> >> Hi List,
> >>
> >> the latest Harmony snapshot ships a version of xalan.jar, which seems
> to
> >> contains
> >> an old version of Jakarta bcel.
> >> When I try to run my bcel based App, I get a NoSuchMethodError:
> >>
> >>
> org/apache/bcel/Repository.lookupClass(Ljava/lang/Class;)Lorg/apache/bcel/classfile/JavaClass;
> >>
> >> I checked Repository.class within xalan.jar, and it doesen´t have this
> >> Method
> >> (I use bcel5.2rc1, but this Method is already present in 5.1).
> >>
> >> How can I tell Harmony to use my Version (-classpath bcel5.2rc1 does
> not
> >> work)
> >> of bcel?
> >>
> >
> >
> > Try option:  -Xbootclasspath/p:<specify your path here>
> >
> > Thanks,
> > Stepan.
> >
> > Regards,
> >
> >> Soeren
> >>
> >> --
> >>
> >> Soeren Strassfeld (nc-straszso at netcologne dot de)
> >>
> >>
> >>
> >> ---------------------------------------------------------------------
> >> Terms of use : http://incubator.apache.org/harmony/mailing.html
> >> To unsubscribe, e-mail: harmony-dev-unsubscribe@incubator.apache.org
> >> For additional commands, e-mail: harmony-dev-help@incubator.apache.org
> >>
> >>
> >>
> >
> >
> > -----------------------------------------------------------------------
> > Terms of use : http://incubator.apache.org/harmony/mailing.html
> > To unsubscribe, e-mail: harmony-dev-unsubscribe@incubator.apache.org
> > For additional commands, e-mail: harmony-dev-help@incubator.apache.org
> >
> > Thanks,
> > Stepan Mishura
> > Intel Middleware Products Division
> >
> >
>
>
> ---------------------------------------------------------------------
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>
>


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Thanks,
Stepan Mishura
Intel Middleware Products Division

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