@Override
public T set(int index, T value) {
if (value == null) {
throw new NullPointerException("A NodeList must not contain a null element!");
} else {
switch (value.getNodeType()) {
case AstNode.NT_NODE_LIST:
throw new IllegalArgumentException("Must not set a single element to a NodeList");
case AstNode.NT_TEXT:
return setTextIntern(children, index, (AstStringNode<T>) value);
default:
return children.set(index, value);
}
}
}
@SuppressWarnings("unchecked")
private void addTextIntern(AstStringNode<T> text) {
if (!text.getContent().isEmpty()) {
if (i.hasPrevious() && !text.hasAttributes()) {
T prev = i.previous();
if (prev.getNodeType() == AstNode.NT_TEXT && !prev.hasAttributes()) {
try {
i.set((T) mergeTextNodes((AstStringNode<T>) prev, text));
i.next();
return;
} catch (CloneNotSupportedException e) {
// Just add, don't merge
}
}
}
i.add((T) text);
}
}
@Override
public void add(T e) {
if (e != null) {
current = null;
switch (e.getNodeType()) {
case AstNode.NT_NODE_LIST:
for (T n : (AstNodeList<T>) e) i.add(n);
break;
case AstNode.NT_TEXT:
addTextIntern((AstStringNode<T>) e);
break;
default:
i.add(e);
break;
}
}
}
@Override
public void set(T e) {
if (e == null) {
throw new NullPointerException("A NodeList must not contain a null element!");
} else {
switch (e.getNodeType()) {
case AstNode.NT_NODE_LIST:
throw new IllegalArgumentException("Must not set a single element to a NodeList");
case AstNode.NT_TEXT:
setTextIntern((AstStringNode<T>) e);
break;
default:
i.set(e);
current = e;
break;
}
}
}
protected void initConfig() {
application.setEventCenter(eventCenterFactory.getEventCenter(config));
application.setCommandBodyWrapper(new CommandBodyWrapper(config));
application.setMasterElector(new MasterElector(application));
application.getMasterElector().addMasterChangeListener(masterChangeListeners);
application.setRegistryStatMonitor(new RegistryStatMonitor(application));
node = NodeFactory.create(getNodeClass(), config);
config.setNodeType(node.getNodeType());
LOGGER.info("Current node config :{}", config);
// 订阅的node管理
SubscribedNodeManager subscribedNodeManager = new SubscribedNodeManager(application);
application.setSubscribedNodeManager(subscribedNodeManager);
nodeChangeListeners.add(subscribedNodeManager);
// 用于master选举的监听器
nodeChangeListeners.add(new MasterElectionListener(application));
// 监听自己节点变化（如，当前节点被禁用了）
nodeChangeListeners.add(new SelfChangeListener(application));
}
/** This whole method breaks the set() interface established by the ListIterator class! */
@SuppressWarnings("unchecked")
private void setTextIntern(AstStringNode<T> text) {
if (current == null) throw new IllegalStateException();
if (text.getContent().isEmpty()) {
i.remove();
current = null;
} else {
if (i.hasPrevious() && !text.hasAttributes()) {
i.previous();
if (i.hasPrevious()) {
T prev = i.previous();
if (prev.getNodeType() == AstNode.NT_TEXT && !prev.hasAttributes()) {
try {
i.set((T) mergeTextNodes((AstStringNode<T>) prev, text));
// set() protocol requires that the iterator doesn't
// move. When deleting something that's not
// possible. So we move to the merged text element.
i.next();
i.next();
i.remove();
i.previous();
// use own method to set current!
next();
return;
} catch (CloneNotSupportedException e) {
// Just set, don't merge
}
}
i.next();
}
i.next();
}
i.set((T) text);
}
}
