When compiling a GWT app that uses Errai-Bus I get following exception:
Invoking generator org.jboss.errai.marshalling.rebind.MarshallersGenerator
Generating Marshallers Bootstrapper...
java.util.concurrent.ExecutionException: java.lang.NullPointerException
Caused by: java.lang.NullPointerException
at org.jboss.errai.codegen.util.ClassChangeUtil._findAllMatching(ClassChangeUtil.java:453)
at org.jboss.errai.codegen.util.ClassChangeUtil._findAllMatching(ClassChangeUtil.java:454)
at org.jboss.errai.codegen.util.ClassChangeUtil.findAllMatching(ClassChangeUtil.java:446)
The Problem occurs when I run the com.google.gwt.dev.Compiler in a working directory that contains a folder with wrong permissions (i.e. to which the user doesn't have access to).
The root cause is that in ClassChangeUtil._findAllMatching:
public static void _findAllMatching(final HashSet<File> matching, final String fileName, final File from) {
if (from.isDirectory()) {
for (final File file : from.listFiles()) {
_findAllMatching(matching, fileName, file);
}
}
else {
if (fileName.equals(from.getName())) {
matching.add(from);
}
}
}
from.listFiles() returns null if the from folder throws a SecurityException.
I think there should be a check if listFiles != null to avoid this error.
