IPathVariableManager.validateValue(URI) returns null - eclipse-plugin

Question

in the Eclipse plugin I'm working on I have a piece of code which basically looks like this:
public static void checkProblemV1() {
try {
String path = "C:\\temp";
org.eclipse.core.runtime.IPath value =
new org.eclipse.core.runtime.Path(path);
IPathVariableManager pathManager =
ResourcesPlugin.getWorkspace().getPathVariableManager();
String name = "somename";
IStatus statusName = pathManager.validateName(name);
IStatus statusValue = pathManager.validateValue(value);
if (statusName == null || statusValue == null) {
System.err.println("checkProblemV1(): statusName is " +
(statusName == null ? "null" : ("not null: '" + statusName + "'.")));
System.err.println("checkProblemV1(): statusValue is " +
(statusValue == null ? "null" : ("not null: '" + statusValue + "'.")));
}
else if (statusName.isOK() && statusValue.isOK()) {
pathManager.setValue(name, value); // setValue is deprecated
System.out.println("checkProblemV1(): Everything fine");
}
else {
if (!statusName.isOK()) {
System.err.println("checkProblemV1(): statusName is not OK.");
}
if (!statusValue.isOK()) {
System.err.println("checkProblemV1(): statusValue is not OK.");
}
}
}
catch (CoreException e) {
System.err.println("checkProblemV1(): CoreException: " + e.getMessage());
}
}
When the above method is executed, there are no problems, but I get a deprecation warning for setValue() when compiling. It's when I wanted to fix that deprecation warning by replacing the call to setValue() with a call to setURIValue() that I got into trouble. First I had to tweak how that Windows-style path was written to avoid an URISyntaxException but after doing that, setURIValue() returns null and after having a look in the documentation I can't see that it should do that? I guess the URI is invalid after all but don't know how to fix it. Below is a test method in the same style as the one above demonstrating the problem.
public static void checkProblemV2() {
try {
String path = "C:\\temp";
// Have to replace \ with /, or we get URISyntaxExeption:
// checkProblemV2(): URISyntaxException: Illegal character in opaque part at index 2: C:\temp
path = path.replace('\\', '/');
java.net.URI value = new java.net.URI(path);
IPathVariableManager pathManager =
ResourcesPlugin.getWorkspace().getPathVariableManager();
String name = "somename";
IStatus statusName = pathManager.validateName(name);
IStatus statusValue = pathManager.validateValue(value);
if (statusName == null || statusValue == null) {
System.err.println("checkProblemV2(): statusName is " +
(statusName == null ? "null" : ("not null: '" + statusName + "'.")));
System.err.println("checkProblemV2(): statusValue is " +
(statusValue == null ? "null" : ("not null: '" + statusValue + "'.")));
}
else if (statusName.isOK() && statusValue.isOK()) {
pathManager.setURIValue(name, value);
System.out.println("checkProblemV2(): Everything fine");
}
else {
if (!statusName.isOK()) {
System.err.println("checkProblemV2(): statusName is not OK.");
}
if (!statusValue.isOK()) {
System.err.println("checkProblemV2(): statusValue is not OK.");
}
}
}
catch (URISyntaxException e) {
System.err.println("checkProblemV2(): URISyntaxException: " + e.getMessage());
}
catch (CoreException e) {
System.err.println("checkProblemV2(): CoreException: " + e.getMessage());
}
}
When I run the above two methods, I get the following output.
checkProblemV1(): Everything fine
checkProblemV2(): statusName is not null: 'Status OK: unknown code=0 OK null'.
checkProblemV2(): statusValue is null
Thanks for reading and for any help, it's seriously appreciated!

Answer 1

There's a bug in org.eclipse.core.internal.resources.PathVariableManager.validateValue(URI) where it is using other internal methods but returning null no matter what else is going on. Please open a bug with Eclipse Platform/Resources.
And I agree with your comment, you should use:
URI uri = new File("C:\\temp").toURI();
pathManager.setURIValue(theName, uri);