Three clarifications (mea culpa) on my previous post.
On Sep 3, 2004, at 6:33 PM, Joseph Grace wrote:
However, I have experimented and discovered that "rwd" works (on OSX), while "rws" does not work. The only difference appears to be that "rws" writes metadata in addition to the content. Hmm...
1. I need to be more specific. I'm talking specifically about testing (a subset of) the Derby code using "rws" (access content and metadata). "rws" results in "File not found" under OSX when trying to reopen an existing file (even though it seems to work on other platforms) under some not well defined circumstance. This is the bug/issue which started this thread, but it's not clear where to place blame (OSX JVM, Derby, or blameless ambiguity of http://java.sun.com/j2se/1.4.2/docs/api/java/io/RandomAccessFile.html).
2. However it is interesting that, under the same not well defined circumstance, "rwd" does work on OSX which may provide the desired multiplatform workaround. That's what my patch does.
3. I should mention however that I'm not sure about relative performance ramifications of the latest patches as I don't have a good sense of the performance issues to begin with as the pertain to the "rw", "rws", and "rwd" approaches. If someone could sanity check these alternatives from a performance perspective, I'd appreciate it (assuming the "rwd" patch even makes sense).
Cheers,
= Joe =
