Need for actor/attribute that detects OS/executables
Some workflows will only work on certain operating systems or require certain executables outside of Kepler (e.g. JNI based actors; R system, etc). It would be useful to have an actor/parameters/attribute that could be configured by the workflow author to check the OS and/or the existence of certain files (executables?) that are needed by the workflow and then inform the user if workflow will not run (i.e message like "This workflow will NOT run of the current OS (Mac OS X)".
#1 Updated by Christopher Brooks about 14 years ago
I'll bet we could use the expression syntax to get properties and then
invoke ThrowModelError if things aren't right.
See also $PTII/ptolemy/kernel/attributes/RequireVersion.java for
how we require a specific version of Java.
Perhaps this could be extended to have a parameter that takes an expression
that must evaluate to true. We might use something like
getProperty("java.whatever")== "Windoze" || findFile("MyBinary")
(The syntax is probably off)