/** @see #setTaskPreprocessorForTag(Object, TaskPreprocessor) */
@SuppressWarnings("deprecation")
public void setTaskPreprocessorForTag(
Object tag, Class<? extends TaskPreprocessor> preprocessor) {
synchronized (preprocessorByTag) {
TaskPreprocessor old = getTaskPreprocessorForTag(tag);
if (old != null) {
if (preprocessor.isAssignableFrom(old.getClass())) {
/* already have such an instance */
return;
}
// might support multiple in future...
throw new IllegalStateException(
"Not allowed to set multiple TaskProcessors on ExecutionManager tag (tag "
+ tag
+ ", has "
+ old
+ ", setting new "
+ preprocessor
+ ")");
}
try {
setTaskPreprocessorForTag(tag, preprocessor.newInstance());
} catch (InstantiationException e) {
throw Throwables.propagate(e);
} catch (IllegalAccessException e) {
throw Throwables.propagate(e);
}
}
}
