First attempts to use jri on ubuntu 20.04 stranded. Steps I followed:
1) download rJava from https://www.rforge.net/rJava/files/ 2) create a symlink /usr/lib/libjvm.so to /usr/lib/jvm/java-8-openjdk- amd64/jre/lib/amd64/server/libjvm.so 3) configure and make jri 4) create a symlink /usr/lib/libjri.so 5) put the built JRI.jar in local maven repo 6) include a dependency to the jar 7) create and run a hello world test for Rengine The test fails because com.misc.Unsafe.prefetchRead isn't found. As I understand depending on com.misc.Unsafe.* is a risk. I will not follow this route any further for now, though I still think having jri available would be great. Steps to get there are I think: 1) remove com.misc.Unsafe usage from the solution 2) make libjri available in repositories (apt, yum, other) 3) make JRI.jar available in maven central Bye, Eduard -----Original Message----- From: Eduard Drenth <edre...@fryske-akademy.nl> To: spurdl...@gmail.com <spurdl...@gmail.com> Cc: r-help@r-project.org <r-help@r-project.org> Subject: Re: [R] calling r from java Date: Sat, 28 Nov 2020 11:57:49 +0000 Thanks all, I'll go for https://www.rforge.net/JRI/ and the librariesin maven https://search.maven.org/search?q=jri The maven library is build from here https://www.rforge.net/rJava/files/ back in 2017. After this no new libs are published to maven. It would be nice (understatement) if publishing new rJava components tomaven becomes a regular part of R deveopment processes. This would promote R use from Java which I think is good. And of course I can help. Bye, Eduard -----Original Message-----From: Abby Spurdle <spurdl...@gmail.com>To: Eduard Drenth <edre...@fryske-akademy.nl>Cc: r-help@r-project.org < r-help@r-project.org>Subject: Re: [R] calling r from javaDate: Sat, 28 Nov 2020 15:55:36 +1300 Hi Eduard, > Now I developed a service that executes Rscript > (UsingProcessBuilder),sends text to stdin of the process and reads > fromstdout of theprocess. This doesn't answer your question, but may be relevant.I have a java- based application that works on a similar principle.(The code ishorrendously bad and most of it should be thrown away).I'm planning to write a terminal emulator, in the nearfuture.(Currently, second place on my top-level todo list).The primary objective is to build object-oriented and messagepassingAPIs on top of the core terminal emulation system, with at leastsomecross platform functionality.Noting that, in my opinion, the cross-platform aspect is moreimportant for R, than in many other IPC topics.Hence, I'm interested in hearing "wishlist" items for such apis.______________________________________________r-h...@r-project.org mailing list -- To UNSUBSCRIBE and more, see https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code. -- Eduard Drenth, Software Architekt edre...@fryske-akademy.nl Doelestrjitte 8 8911 DX Ljouwert +31 58 234 30 47 +31 62 094 34 28 (privé) skype: eduarddrenth https://github.com/eduarddrenth frisian.eu gpg: https://pgp.surfnet.nl/pks/lookup?search=eduarddrenth Op freed bin ik thús/wurkje ik minder
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______________________________________________ R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
