Thanks Laird! I actually looked (very briefly) for this code but I was looking in plexus-utils, not plexus-components, doh.
Surely there is a better way to implement this. I need to trace this code around and figure out why its doing this and see if maybe we can use another approach to get the same results, without invoking a child shell to exec ls etc. Wayne On Thu, Jan 13, 2011 at 1:00 PM, Laird Nelson <ljnel...@gmail.com> wrote: > Hi, Wayne; this has nothing to do with the JDK and everything to do with > Plexus. > > http://plexus.codehaus.org/plexus-components/plexus-io/xref/org/codehaus/plexus/components/io/attributes/PlexusIoResourceAttributeUtils.html#255 > > Best, > Laird > > On Thu, Jan 13, 2011 at 1:51 PM, Wayne Fay <wayne...@gmail.com> wrote: > >> > [ERROR] Failed to execute goal >> > org.apache.maven.plugins:maven-jar-plugin:2.3.1:jar (default-jar) on >> > project svnkit: Error assembling JAR: Failed to read filesystem >> > attributes for: /dkb3/sw-projekte/asf/svnkit/tags/1_3_3/pom.xml: Failed >> > to retrieve numeric file attributes using: '/bin/sh -c ls -1nlad >> > /dkb3/sw-projekte/asf/svnkit/tags/1_3_3/pom.xml': Error while executing >> > process. Child creation error: no such file or directory -> [Help 1] >> > [ERROR] >> > [ERROR] To see the full stack trace of the errors, re-run Maven with the >> > -e switch. >> > [ERROR] Re-run Maven using the -X switch to enable full debug logging. >> > [ERROR] >> >> Well, what does it look like when you run with -e or -X? Don't send >> the full output back to the list -- post it at pastebin.org and send >> us a link, unless you can chop it down to the bare minimum of info >> yourself. >> >> > How can java catch file system attributes better? >> > >> > Why do we use a Unix shell command to create a child prozess >> > (sub-process in openvms) by Java just to catch a file system attribute? >> >> You'd have to ask the JDK folks these questions. What JDK are you >> using, and from what vendor? >> >> > But it seems that on my OpenVMS with default DCL command language, the >> > maven version 3 under java and a JVM attempts to place a command which >> > should create a child process just to execute a ls command used to >> > retrieve a file attribute. >> >> Most likely the Java code written by the Maven team (or Java code >> being used in Maven that is actually from plexus-utils or another >> library) is simply leveraging standard Java file io routines which >> happen to use the child process to execute ls etc. If there was a >> better way to get this information, I'd expect it would have been >> implemented, or perhaps OpenVMS is just not very well supported by the >> Java platform? Maybe you could dig deep into the code (debug Maven, >> plexus, and the jdk itself in Netbeans or something), find where this >> child process thing is coming from, and offer up a patch to the >> appropriate party? >> >> > I call it a style break, we should not do it from Java and not assume >> > Unix or the like shells avail, >> > or we are at risk that over time fewer system will support what maven >> > attempts to do. >> >> This has very little to do with Maven, and is primarily the "fault" of >> the JDK on OpenVMS. I would assume that a better approach to finding >> the file attributes is available, but no one cares enough about >> OpenVMS to implement it or pay for it? You are literally the only >> person I've seen post questions on this list about OpenVMS (Nabble >> archives reveal 1 other person has posted about it minimally) so it >> seems to be a pretty low-use OS, at least as far as Maven is >> concerned. >> >> Wayne >> >> --------------------------------------------------------------------- >> To unsubscribe, e-mail: users-unsubscr...@maven.apache.org >> For additional commands, e-mail: users-h...@maven.apache.org >> >> > --------------------------------------------------------------------- To unsubscribe, e-mail: users-unsubscr...@maven.apache.org For additional commands, e-mail: users-h...@maven.apache.org
