// 有数据输入的root节点赋以相应的值，没有数据输入的节点置为空
private void attachRoot(Map<String, Set<String>> map, String fromAlias, DataBag bag) {
if (isTap) {
roots.get(0).attachInputBag(bag);
return;
}
Iterator<PhysicalOperator> ito = roots.iterator();
PhysicalOperator root = null;
while (ito.hasNext()) {
root = ito.next();
if (map.get(fromAlias).contains(root.getAlias())) {
root.attachInputBag(fromAlias, bag);
} else {
root.attachInputBag((DataBag[]) null);
}
}
}
public void feedData(String fromAlias, DataBag bag) throws Exception {
if (isWindowProcessor()) {
((PhysicalOperator) windowPO).attachInputBag(new DataBag[] {bag});
} else {
synchronized (lock) {
try {
// 第一个节点的情况 ，数据输入为上一级bolt或者tap
if (isRoot()) {
attachRoot(this.boltLevalInputMap, fromAlias, bag);
} else {
attachRoot(this.getInputMap(), fromAlias, bag);
}
executeAndEmit(fromAlias, bag);
} finally {
this.innerPlan.detachAllInputBag();
}
}
}
}