public boolean handleEvent(ValidationEvent event) {
if (event == null) {
throw new IllegalArgumentException();
}
// calculate the severity prefix and return value
String severity = null;
boolean retVal = false;
switch (event.getSeverity()) {
case ValidationEvent.WARNING:
severity = Messages.format(Messages.WARNING);
retVal = true; // continue after warnings
break;
case ValidationEvent.ERROR:
severity = Messages.format(Messages.ERROR);
retVal = false; // terminate after errors
break;
case ValidationEvent.FATAL_ERROR:
severity = Messages.format(Messages.FATAL_ERROR);
retVal = false; // terminate after fatal errors
break;
default:
assert false : Messages.format(Messages.UNRECOGNIZED_SEVERITY, event.getSeverity());
}
// calculate the location message
String location = getLocation(event);
System.out.println(
Messages.format(Messages.SEVERITY_MESSAGE, severity, event.getMessage(), location));
// fail on the first error or fatal error
return retVal;
}
/** Calculate a location message for the event */
private String getLocation(ValidationEvent event) {
StringBuffer msg = new StringBuffer();
ValidationEventLocator locator = event.getLocator();
if (locator != null) {
URL url = locator.getURL();
Object obj = locator.getObject();
Node node = locator.getNode();
int line = locator.getLineNumber();
if (url != null || line != -1) {
msg.append("line " + line);
if (url != null) msg.append(" of " + url);
} else if (obj != null) {
msg.append(" obj: " + obj.toString());
} else if (node != null) {
msg.append(" node: " + node.toString());
}
} else {
msg.append(Messages.format(Messages.LOCATION_UNAVAILABLE));
}
return msg.toString();
}