To prevent application hang, we have written Plugins for MEGA (MetaCommand) wich do their work in a Multithreaded way.
The following is a POC of what we are doing:
public void CmdInvoke(MegaObject o, Integer nCmd) {
final MegaRoot mRoot = o.getRoot();
Runnable worker = new Runnable() {
// Wait a bit so CmdInvoke will be done
try {
Thread.sleep(1000);
} catch (InterruptedException e) {}
// Try to reuse mRoot
MegaCollection test = mRoot.getSelection("SELECT [Application] WHERE [Name] LIKE 'A#'");
mRoot.print("Test okay. Size: " + test.size());
};
SwingUtilities.invokeLater(worker); // Do Asynchronous work
}In MEGA 2009 CP5 this design principle worked, but in HOPEX V1R2 it does not. When the asynchronous thread tries to re-use the MegaRoot after CmdInvoke is done, the getSelection() fails with the Error message saying "Internal error while compiling the query".
If we instead try to re-generate a new root object from scratch using
public void CmdInvoke(MegaObject o, Integer nCmd) {
MegaCurrentSession sess = new MegaCurrentSession();
final MegaRoot mRoot = sess.getRoot("");
}HOPEX throws the Error "Native object is not connected" on trying to get the root (i.e. we can't open a MegaCurrentSession from within the MEGA JVM).
How can we get a working MegaRoot from within the HOPEX JVM for concurrent use?
