Qvera does not pick up empty messages.
You can create a script source node with this script:
var directoryName = new java.io.File('c:\\hl7\\in\\empty');
var directoryFiles = directoryName.listFiles();
// loop through each file
for (var j = 0; j < directoryFiles.length; j++) {
var myFile = directoryFiles[j];
// only work on files
if (!myFile.isDirectory()) {
var fileName = myFile.getName();
var fileSize = myFile.length();
qie.debug(fileName+'('+fileSize+')');
qie.addInboundMessage(qie.readFile(myFile), fileName);
myFile.delete();
}
}