RE: Optional Task JUnit - unable to instantiate DocumentBuilderFa ctoryImpl since upgrading to 1.5.1

[Jeremy Mawson <jm...@dialectsolutions.com>]

Thank you Steve for your response.

I've forked the junit tasks as you suggest, and I've also explicity declared
Xerces in the classpath for the junit tasks. However, neither of these
suggestions changed the error.

I played around for a bit longer and discovered all I need to do to resolve
the issue is to upgrade Java to 1.4.1. However, this is not a suitable
solution as I need the ant build to run with 1.3 also. So, what might be
different between 1.3 and 1.4 that would cause such an error?

Has anyone else encountered problems when using JUnit XML log formatting via
Ant 1.5.1 with Java 1.3.1?

Regards
Jeremy


> -----Original Message-----
> From: Steve Loughran [mailto:steve_l@iseran.com]
> Sent: Saturday, 9 November 2002 6:24 AM
> To: Ant Users List
> Subject: Re: Optional Task JUnit - unable to instantiate
> DocumentBuilderFactoryImpl since upgrading to 1.5.1
> 
> 
> 
> ----- Original Message -----
> From: "Jeremy Mawson" <jm...@dialectsolutions.com>
> To: "'Ant Users List'" <an...@jakarta.apache.org>
> Sent: Friday, November 08, 2002 3:23 AM
> Subject: Optional Task JUnit - unable to instantiate
> DocumentBuilderFactoryImpl since upgrading to 1.5.1
> 
> 
> > Greetings
> >
> > I have been successfully using the Ant optional junit task 
> in my builds
> for
> > some time now. Recently we upgraded Ant to version 1.5.1 
> and suddenly
> junit
> > is no longer able to provide XML formatted test results. 
> I've spent around
> 6
> > hours RTM'ing, STW'ing, sourcecode-reading and head-scratching to no
> avail,
> > so I've come here for help.
> >
> > The Ant logging indicates that the junit task wishes to 
> instantiate a
> > com.sun.xml.parser.DocumentBuilderFactoryImpl, but is 
> unable to do so.
> AFAIK
> > this particular class exists in parser.jar, which is 
> neither distributed
> > with Ant nor recommended in the Library Dependencies 
> section of the Ant
> > manual.
> 
> com.sun stuff tends to exist in java runtimes, but the 
> non-forking <java>
> executor in ant1.5.1 doesnt export it to subclasses.
> 
> >
> > Notably another implementation
> > (org.apache.xerces.jaxp.DocumentBuilderFactoryImpl) is 
> distributed in
> > xercesImpl.jar. I read on the JUnit site that you can force 
> the use of a
> > different implementation by creating/modifying 
> jaxp.properties under the
> > JRE's lib dir. However when I set the property
> > javax.xml.parsers.DocumentBuilderFactory to
> > org.apache.xerces.jaxp.DocumentBuilderFactoryImpl Ant 
> failed to execute at
> > all.
> >
> > Is the xercesImpl version of the DocumentBuilderFactoryImpl 
> the one I will
> > eventually require?
> > If so, how can I enable Ant to find this version?
> 
> I'm not sure that is the right approach to fixing this, since 
> it is probably
> a classloader issue.
> 
> 1. set fork=true
> 2. explicitly include the xerces libs in your junit path.
> 
> 
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RE: Optional Task JUnit - unable to instantiate DocumentBuilderFactoryImpl since upgrading to 1.5.1

[Scott Stirling <sc...@rcn.com>]

Hi Jeremy,

JDK 1.4 includes an XML parser (some version of Xerces, I think) and
JAXP APIs in the runtime libs.

I just ran my JUnit tests with JDK 1.3.1_05, Ant 1.5.1 and XML format
output, and formatted the results with Xalan and <junitreport>.  No
problems.  Here are my relevant settings:

<junit printsummary="yes" dir="${basedir}/lib" fork="yes">
  <jvmarg value="-Dtest.data.dir=${test.data.dir}"/>
  <formatter type="xml" extension=".xml"/>
[etc.]

And for junitreport I just have:

<junitreport todir="${junit.reports}"> 
  <fileset dir="${junit.reports}"> 
    <include name="TEST-*.xml"/> 
  </fileset> 
  <report format="frames" todir="${junit.reports}/html"/> 
</junitreport> 

In ANT_HOME/lib as far as XML-related libs go, I have:
crimson.jar
jaxp.jar
xalan.jar
xercesImpl.jar
xml-apis.jar

No CLASSPATH settings, nothing in my JAVA_HOME/jre/lib/ext and no
special JVM args or jaxp.properties.

Why do I have two parsers and two sets of jaxp/XML API interfaces in
ANT_HOME/lib?  Really because some tasks/tools require different parsers
and these seem to all play together fine without any conflicts.  

FWIW, I was able to reproduce DocumentBuilder-related exceptions if I
put an older version of xerces.jar (downloaded directly from the Xerces
project) in ANT_HOME/lib, instead of the xercesImpl.jar that comes with
Ant 1.5.1.

Scott Stirling


> -----Original Message-----
> From: Jeremy Mawson [mailto:jmawson@dialectsolutions.com] 
> Sent: Monday, November 11, 2002 10:15 PM
> To: 'Ant Users List'
> Subject: RE: Optional Task JUnit - unable to instantiate 
> DocumentBuilderFactoryImpl since upgrading to 1.5.1
> 
> 
> Thank you Steve for your response.
> 
> I've forked the junit tasks as you suggest, and I've also 
> explicity declared Xerces in the classpath for the junit 
> tasks. However, neither of these suggestions changed the error.
> 
> I played around for a bit longer and discovered all I need to 
> do to resolve the issue is to upgrade Java to 1.4.1. However, 
> this is not a suitable solution as I need the ant build to 
> run with 1.3 also. So, what might be different between 1.3 
> and 1.4 that would cause such an error?
> 
> Has anyone else encountered problems when using JUnit XML log 
> formatting via Ant 1.5.1 with Java 1.3.1?
> 
> Regards
> Jeremy
> 
> 
> > -----Original Message-----
> > From: Steve Loughran [mailto:steve_l@iseran.com]
> > Sent: Saturday, 9 November 2002 6:24 AM
> > To: Ant Users List
> > Subject: Re: Optional Task JUnit - unable to instantiate 
> > DocumentBuilderFactoryImpl since upgrading to 1.5.1
> > 
> > 
> > 
> > ----- Original Message -----
> > From: "Jeremy Mawson" <jm...@dialectsolutions.com>
> > To: "'Ant Users List'" <an...@jakarta.apache.org>
> > Sent: Friday, November 08, 2002 3:23 AM
> > Subject: Optional Task JUnit - unable to instantiate 
> > DocumentBuilderFactoryImpl since upgrading to 1.5.1
> > 
> > 
> > > Greetings
> > >
> > > I have been successfully using the Ant optional junit task
> > in my builds
> > for
> > > some time now. Recently we upgraded Ant to version 1.5.1
> > and suddenly
> > junit
> > > is no longer able to provide XML formatted test results.
> > I've spent around
> > 6
> > > hours RTM'ing, STW'ing, sourcecode-reading and 
> head-scratching to no
> > avail,
> > > so I've come here for help.
> > >
> > > The Ant logging indicates that the junit task wishes to
> > instantiate a
> > > com.sun.xml.parser.DocumentBuilderFactoryImpl, but is
> > unable to do so.
> > AFAIK
> > > this particular class exists in parser.jar, which is
> > neither distributed
> > > with Ant nor recommended in the Library Dependencies
> > section of the Ant
> > > manual.
> > 
> > com.sun stuff tends to exist in java runtimes, but the
> > non-forking <java>
> > executor in ant1.5.1 doesnt export it to subclasses.
> > 
> > >
> > > Notably another implementation
> > > (org.apache.xerces.jaxp.DocumentBuilderFactoryImpl) is
> > distributed in
> > > xercesImpl.jar. I read on the JUnit site that you can force
> > the use of a
> > > different implementation by creating/modifying
> > jaxp.properties under the
> > > JRE's lib dir. However when I set the property 
> > > javax.xml.parsers.DocumentBuilderFactory to 
> > > org.apache.xerces.jaxp.DocumentBuilderFactoryImpl Ant
> > failed to execute at
> > > all.
> > >
> > > Is the xercesImpl version of the DocumentBuilderFactoryImpl
> > the one I will
> > > eventually require?
> > > If so, how can I enable Ant to find this version?
> > 
> > I'm not sure that is the right approach to fixing this, since
> > it is probably
> > a classloader issue.
> > 
> > 1. set fork=true
> > 2. explicitly include the xerces libs in your junit path.



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