Unit Test JVM Issues / URE_INTERNAL_JAVA_DIR

[Stephan Bergmann]

On 09/14/2013 09:14 AM, Andrzej Hunt wrote:
> I've been trying to track down why the jvm isn't usable in unit tests
> (attempted fix in https://gerrit.libreoffice.org/#/c/5936/ )
>
> stoc/source/javavm/javavm.cxx needs to find java which it does by
> expanding URE_INTERNAL_JAVA_DIR. This seems to be set within "unorc",
> which is found automatically by cppuhelper (cppuhelper/source/paths.cxx
> -- getUnoIniuri()) -- this loads unorc from wherever cppuhelper library
> is  found(called libuno_ccpuhlpergcc3.so -- not sure why this is the
> naming scheme?).
>
> Running LO from instdir: instdir/unxlngx6/ure/lib/unorc is used
> (generated by scp2/source/ooo/ure.scp) -- this contains the expected
> URE_INTERNAL_JAVA_DIR
>
> Running unit tests -- seems to happen in solver/, and
> solver/unxlngx6/lib/unorc is used (directly copied from
> cppuhelper/source/unorc), this one  doesn't contain any JAVA paths so
> the jvm can't be loaded.
>
>
> I've just hardcoded the new path into cppuhelper/source/unorc .
> I don't know enough about the instdir changes to know whether this is a
> good long term solution though?
>
> There is also the classpath variable -- in the instdir unorc this is set
> as
> URE_INTERNAL_JAVA_CLASSPATH=${URE_MORE_JAVA_TYPES}
>
> URE_MORE_JAVA_TYPES is set in fundamentalrc, of which there is also a
> copy in solver (but under installation/program/...), I'm still looking
> into whether this is loaded too in a unit test environment, but for the
> moment I've just copied the same URE_INTERNAL_JAVA_CLASSPATH line: I
> haven't tested yet whether this works -- I'll try that next.

Looks to me like using in-process Java-UNO has never worked in 
CppunitTests (and has never been needed before).  Adding 
URE_INTERNAL_JAVA_CLASSPATH isn't currently needed (and there's no code 
that sets URE_MORE_JAVA_TYPES in any of the cases that use solver's 
unorc anyway), so I pushed <https://gerrit.libreoffice.org/#/c/5936/> 
without that part now as 
<http://cgit.freedesktop.org/libreoffice/core/commit/?id=6eb840cc540bb6f2efcebc0349a8e6e7ba074cd8> 
"Set URE_INTERNAL_JAVA_DIR for unorc to allow jvm in unit tests."

> What I'm still not able to do is have hsqldb itself load (fails on can't
> find org.hsqldb.jdbcDriver or similar) --this is since the driver has
> the hsqldb.jar path hardcoded in the sources as
> "$BRAND_BASE_DIR/" LIBO_SHARE_JAVA_FOLDER "/hsqldb.jar"
> (and the jdbc drivers specifically only load classes from the driver
> specific classpath) -- I guess if unit tests were to be run in instdir
> then that would allow things to work, I'm still thinking about how best
> to let them run in the current solver though (although I hear solver is
> to be gotten rid of eventually).

The real problems were that (1) recent instdir changes had broken the 
ability to use solver's jvmfwk lib in "direct mode," which instantiating 
a JVM in the CppunitTest process would want to do, fixed with 
<http://cgit.freedesktop.org/libreoffice/core/commit/?id=a041f518afe083f997660eb8f809df7f20c30fed> 
"Still copy jvmfwk support files to solver;" and (2) the connectivity 
drivers use jfw_getEnabled which does not work in that "direct mode," 
fixed with 
<http://cgit.freedesktop.org/libreoffice/core/commit/?id=429042021590c80afb25ade833269635a24f2778> 
'Make Java-based connectivity drivers work with jvmfwk "direct mode.'"

With all those fixes in, <https://gerrit.libreoffice.org/#/c/5934/> 
"Implement hsqldb loading test" now worked locally for me.

(Much of the above will become moot soon of course, when solver is done 
away with.)

Stephan