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Fix IllegalArgumentException in getFolder() for ancestor resource dirs #2160

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Fix IllegalArgumentException in getFolder() for ancestor resource dirs #2160

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9ebf416
Fix IllegalArgumentException in getFolder() for ancestor resource dirs
chagong Apr 15, 2026
8b07819
discard version bump
chagong Apr 17, 2026
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9 changes: 8 additions & 1 deletion org.eclipse.m2e.jdt/src/org/eclipse/m2e/jdt/internal/AbstractJavaProjectConfigurator.java
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Original file line number Diff line number Diff line change
Expand Up @@ -1003,7 +1003,14 @@ protected IContainer getFolder(IProject project, String path) throws CoreExcepti
}
if(!project.exists(relativePath) && Files.exists(folderPath)
&& !ResourcesPlugin.getWorkspace().getRoot().getLocation().toPath().equals(folderPath)) {
String linkName = projectLocation.relativize(folderPath).toString().replace("/", "_");
Path relativized = projectLocation.relativize(folderPath);
if(relativized.startsWith("..")) {
// Resource directory is outside (ancestor or sibling of) the project.
// Cannot create a valid linked folder for paths that escape the project tree.
// Return the project itself so the caller skips this resource directory.
return project;
}
String linkName = relativized.toString().replace("/", "_");
IFolder folder = project.getFolder(linkName);
createLinkWithRetry(folder, folderPath.toUri());
folder.setPersistentProperty(LINKED_MAVEN_RESOURCE, "true");
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