Only read Java settings files in application mode

The 'javasettings_${_OS}_${_ARCH}.xml' files are only
meant to be used when the application mode of the
Java framework is used, not in direct mode.

From ure/source/README:

> You can also use the
> UNO_JAVA_JFW_JREHOME deployment variable to specify the location of a JDK/JRE
> installation.  For more information on this variable, see
> http://udk.openoffice.org/common/man/spec/javavendorextension.sxw.

From that http://udk.openoffice.org/common/man/spec/javavendorextension.sxw :

> The direct mode of the framework is used within the build environment.
> Java is needed there in order to register Java UNO components with the
> regcomp tool. Direct mode means that no settings are written or read.
> That is the parameters UNO_JAVA_JFW_USER_DATA and
> UNO_JAVA_JFW_SHARED_DATA are not used.
> [...]
> Another example for using the direct mode is the SDK. The SDK uses the
> libraries from the office installation. When an SDK is configured then
> one specifies what Java is to be used. This Java shall then be used for
> all task which require Java including registration of UNO components. In
> order to override the java settings of the office the script which
> prepares the SDK environment sets these environment variables:
> UNO_JAVA_JFW_JREHOME=<file_URL_to_selected_Java>
> UNO_JAVA_JFW_ENV_CLASSPATH=true
> UNO_JAVA_JFW_VENDOR_SETTINGS=<file_URL_to_javavendors.xml_from_OOo>
> By setting UNO_JAVA_JFW_JREHOME the framework is switched into direct mode
> and the office settings are disregarded.

Therefore, don't try to read the settings when using direct mode.
This makes the relevant code path for accessing the settings conditional
on 'jfw::JFW_MODE_APPLICATION' being used.

Otherwise, using direct mode e.g. by starting LibreOffice using

UNO_JAVA_JFW_JREHOME=file:///usr/lib/jvm/java-11-openjdk-amd64/ ./instdir/program/soffice --writer

then going to the "Advanced" options in "Tools" -> "Options", where
the Java settings reside would result in this SAL_WARN being triggered

warn:jfw:10207:10207:jvmfwk/source/framework.cxx:119: [Java framework] Trying to access settings files in direct mode.

and no JVM at all being shown in the list of available
Java installations.

Change-Id: I2b98d822aed2b160f970c50ca695a9f3beeacd34
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/104001
Tested-by: Jenkins
Reviewed-by: Michael Weghorn <m.weghorn@posteo.de>

0 files changed, 0 insertions, 0 deletions