import org.apache.zookeeper.proto.GetDataResponse; //导入依赖的package包/类
/**
 * The asynchronous version of getData.
 *
 * @see #getData(String, Watcher, Stat)
 */
public void getData(final String path, Watcher watcher,
        DataCallback cb, Object ctx)
{
    final String clientPath = path;
    PathUtils.validatePath(clientPath);

    // the watch contains the un-chroot path
    WatchRegistration wcb = null;
    if (watcher != null) {
        wcb = new DataWatchRegistration(watcher, clientPath);
    }

    final String serverPath = prependChroot(clientPath);

    RequestHeader h = new RequestHeader();
    h.setType(ZooDefs.OpCode.getData);
    GetDataRequest request = new GetDataRequest();
    request.setPath(serverPath);
    request.setWatch(watcher != null);
    GetDataResponse response = new GetDataResponse();
    cnxn.queuePacket(h, new ReplyHeader(), request, response, cb,
            clientPath, serverPath, ctx, wcb);
}
 

import org.apache.zookeeper.proto.GetDataResponse; //导入依赖的package包/类
/**
 * The asynchronous version of getConfig.
 *
 * @see #getConfig(Watcher, Stat)
 */
public void getConfig(Watcher watcher,
        DataCallback cb, Object ctx)
{
    final String configZnode = ZooDefs.CONFIG_NODE;
    
    // the watch contains the un-chroot path
    WatchRegistration wcb = null;
    if (watcher != null) {
        wcb = new DataWatchRegistration(watcher, configZnode);
    }

    RequestHeader h = new RequestHeader();
    h.setType(ZooDefs.OpCode.getData);
    GetDataRequest request = new GetDataRequest();
    request.setPath(configZnode);
    request.setWatch(watcher != null);
    GetDataResponse response = new GetDataResponse();
    cnxn.queuePacket(h, new ReplyHeader(), request, response, cb,
           configZnode, configZnode, ctx, wcb);
}
 

import org.apache.zookeeper.proto.GetDataResponse; //导入依赖的package包/类
/**
 * The Asynchronous version of getData. The request doesn't actually until
 * the asynchronous callback is called.
 *
 * @see #getData(String, Watcher, Stat)
 */
public void getData(final String path, Watcher watcher,
        DataCallback cb, Object ctx)
{
    final String clientPath = path;
    PathUtils.validatePath(clientPath);

    // the watch contains the un-chroot path
    WatchRegistration wcb = null;
    if (watcher != null) {
        wcb = new DataWatchRegistration(watcher, clientPath);
    }

    final String serverPath = prependChroot(clientPath);

    RequestHeader h = new RequestHeader();
    h.setType(ZooDefs.OpCode.getData);
    GetDataRequest request = new GetDataRequest();
    request.setPath(serverPath);
    request.setWatch(watcher != null);
    GetDataResponse response = new GetDataResponse();
    cnxn.queuePacket(h, new ReplyHeader(), request, response, cb,
            clientPath, serverPath, ctx, wcb);
}
 

import org.apache.zookeeper.proto.GetDataResponse; //导入依赖的package包/类
/**
 * The Asynchronous version of reconfig.
 *
 * @see #reconfigure
 *
 **/
public void reconfigure(String joiningServers, String leavingServers,
                        String newMembers, long fromConfig, DataCallback cb, Object ctx) {
    RequestHeader h = new RequestHeader();
    h.setType(ZooDefs.OpCode.reconfig);
    ReconfigRequest request = new ReconfigRequest(joiningServers, leavingServers, newMembers, fromConfig);
    GetDataResponse response = new GetDataResponse();
    cnxn.queuePacket(h, new ReplyHeader(), request, response, cb,
           ZooDefs.CONFIG_NODE, ZooDefs.CONFIG_NODE, ctx, null);
}
 

import org.apache.zookeeper.proto.GetDataResponse; //导入依赖的package包/类
/**
 * The Asynchronous version of reconfig. 
 *
 * @see #reconfig
 *      
 **/
public void reconfig(String joiningServers, String leavingServers,
    String newMembers, long fromConfig, DataCallback cb, Object ctx)
{
    RequestHeader h = new RequestHeader();
    h.setType(ZooDefs.OpCode.reconfig);       
    ReconfigRequest request = new ReconfigRequest(joiningServers, leavingServers, newMembers, fromConfig);
    GetDataResponse response = new GetDataResponse();
    cnxn.queuePacket(h, new ReplyHeader(), request, response, cb,
           ZooDefs.CONFIG_NODE, ZooDefs.CONFIG_NODE, ctx, null);
}
 

import org.apache.zookeeper.proto.GetDataResponse; //导入依赖的package包/类
public IGetDataResponse() {
    this(new GetDataResponse());
}