[Rd] Canonical package directory name for JAR files?

Roebuck,Paul L proebuck at mdanderson.org
Wed Feb 8 23:31:00 CET 2012

What would be involved in modifying rJava's .jpackage() method
to search in both locations ('java' and/or 'jars') for JAR files
to be added to the CLASSPATH on JVM initialization?

On 2/8/12 4:12 PM, "William Dunlap" <wdunlap at tibco.com> wrote:

> We don't "mandate" a given JDK (including the compiler,
> javac), but we do supply the JRE.  We do require that the
> java compiler be able to produce code that the JRE accepts
> (we test-run javac with a variety of common version-type
> flags to try to find one that works with our JRE).
> It is source:pkg/java/{src,prebuiltjars,Makevars} -> binary:pkg/jars,
> roughly parallel with source:pkg/src -> binary:pkg/libs.
> Bill Dunlap
> Spotfire, TIBCO Software
> wdunlap tibco.com
>> -----Original Message-----
>> From: Simon Urbanek [mailto:simon.urbanek at r-project.org]
>> Sent: Wednesday, February 08, 2012 1:46 PM
>> To: William Dunlap
>> Cc: Roebuck,Paul L; R-Devel
>> Subject: Re: [Rd] Canonical package directory name for JAR files?
>> Unfortunately we cannot mandate JDK so packages have to use the build
>> stage for compilation so the S+ model doesn't work. I think java is
>> more consistent than src/java -> jars
>> Sent from my iPhone
>> On Feb 8, 2012, at 3:27 PM, William Dunlap <wdunlap at tibco.com> wrote:
>>> For what it is worth, the S+ package system uses
>>> the java directory in source packages to store
>>> java source code (under pkg/java/src/, using the usual
>>> directory structure that follows the class structure
>>> under there), prebuilt jar files (in pkg/java/prebuiltjars,
>>> no subdirectories), and a Makevars file (pkg/java/Makevars)
>>> that can define the java compiler flags PKG_JAVAC_CLASSPATH
>>> and PKG_JAVACFLAGS, e.g.,
>>> PKG_JAVAC_CLASSPATH=$(SHOME)/java/jre/libext/jaxp.jar;$(SHOME)/java/jre/libe
>>> xt/batik.jar
>>>  PKG_JAVACFLAGS=-verbose -g
>>> INSTALL compiles the java code in pkg/java/src and puts
>>> it into into a jar file called pkg/jars/pkg.jar.  All of
>>> the jar files in pkg/java/prebuiltjars are copied into
>>> pkg/jars as well.  The installed package has a jars directory
>>> but no java directory (i.e., {java,jars} <=> {src,libs}).
>>> library(pkg) adds pkg/jars to the CLASSPATH so .Java calls
>>> will find it.
>>> Bill Dunlap
>>> Spotfire, TIBCO Software
>>> wdunlap tibco.com
>>>> -----Original Message-----
>>>> From: r-devel-bounces at r-project.org [mailto:r-devel-bounces at r-project.org]
>>>> On Behalf Of
>> Roebuck,Paul L
>>>> Sent: Wednesday, February 08, 2012 8:14 AM
>>>> To: Simon Urbanek
>>>> Cc: R-Devel
>>>> Subject: Re: [Rd] Canonical package directory name for JAR files?
>>>> On 2/7/12 5:37 PM, "Simon Urbanek" <simon.urbanek at r-project.org> wrote:
>>>>> On Feb 7, 2012, at 4:34 PM, Roebuck,Paul L wrote:
>>>>>> We have an R package which needs to include a JAR file.
>>>>>> Is there a canonical directory for it?
>>>>> rJava defines "java" for that purpose (see ?.jpackage).
>>>>> How canonical that is may be open for debate ;)
>>>> Yeah, when I wrote Java stuff, that was the Java source code
>>>> root directory. Yet, 'lib' (which was the directory where JAR
>>>> files lived in Java projects) seems inappropriate for non-Java
>>>> projects.
>>>> But 'java' appears to be the de-facto standard for R packages,
>>>> so...
>>>> ______________________________________________
>>>> R-devel at r-project.org mailing list
>>>> https://stat.ethz.ch/mailman/listinfo/r-devel

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