import javax.activation.CommandInfo; //导入依赖的package包/类
private static boolean cmdMapInitialized(MailcapCommandMap mailMap) {
    CommandInfo[] commands = mailMap.getAllCommands("text/xml");
    if (commands == null || commands.length == 0) {
        return false;
    }

    // SAAJ RI implements it's own DataHandlers which can be used for JAX-WS too;
    // see com.sun.xml.internal.messaging.saaj.soap.AttachmentPartImpl#initializeJavaActivationHandlers
    // so if found any of SAAJ or our own handler registered, we are ok; anyway using SAAJ directly here
    // is not good idea since we don't want standalone JAX-WS to depend on specific SAAJ impl.
    // This is also reason for duplication of Handler's code by JAX-WS
    String saajClassName = "com.sun.xml.internal.messaging.saaj.soap.XmlDataContentHandler";
    String jaxwsClassName = "com.sun.xml.internal.ws.encoding.XmlDataContentHandler";
    for (CommandInfo command : commands) {
        String commandClass = command.getCommandClass();
        if (saajClassName.equals(commandClass) ||
                jaxwsClassName.equals(commandClass)) {
            return true;
        }
    }
    return false;
}
 

import javax.activation.CommandInfo; //导入依赖的package包/类
/**
 * Loads the default set of Java activation MIME mappings required by
 * the GData library.  Extends the basic set configured by the JavaMail
 * library to add mappings for Atom, RSS, and JSON application types.
 */
public static void loadMimeMappings() {
  final String[] CONTENT_TYPES = new String[] {
      "application/atom+xml", "application/rss+xml", "application/json"
  };

  final String CONTENT_HANDLER = ";; x-java-content-handler"
      + "=com.google.gdata.data.media.GDataContentHandler";

  CommandMap commandMap = CommandMap.getDefaultCommandMap();
  if (commandMap instanceof MailcapCommandMap) {
    MailcapCommandMap mailcapMap = (MailcapCommandMap) commandMap;
    for (int i = 0; i < CONTENT_TYPES.length; i++) {
      CommandInfo[] comm = mailcapMap.getAllCommands(CONTENT_TYPES[i]);
      if (comm == null || comm.length == 0) {
        mailcapMap.addMailcap(CONTENT_TYPES[i] + CONTENT_HANDLER);
      }
    }
  } else {
    LOGGER.warning(
        "Unable to find MailcapCommandMap, skipping dynamic mailcap config.");
  }
}
 

import javax.activation.CommandInfo; //导入依赖的package包/类
/**
 * Sets the default mail caps.
 */
private void setDefaults() {
    MailcapCommandMap mailcap = (MailcapCommandMap) CommandMap.getDefaultCommandMap();
    
    for (int i = 0; i < mailcaps.length; i++)
    {
      CommandInfo command = mailcap.getCommand(mailcaps[i].getMimeType(), mailcaps[i].getCommandName());
      if (command == null || !command.getCommandClass().equals(mailcaps[i].getClassName()))
      {
        mailcap.addMailcap(mailcaps[i].toString());
      }
    }
    
    CommandMap.setDefaultCommandMap(mailcap);
}
 

import javax.activation.CommandInfo; //导入依赖的package包/类
@Override
public CommandInfo[] getAllCommands() {
    return delegate.getAllCommands();
}
 

import javax.activation.CommandInfo; //导入依赖的package包/类
@Override
public Object getBean(CommandInfo paramCommandInfo) {
    return delegate.getBean(paramCommandInfo);
}
 

import javax.activation.CommandInfo; //导入依赖的package包/类
@Override
public CommandInfo getCommand(String paramString) {
    return delegate.getCommand(paramString);
}
 

import javax.activation.CommandInfo; //导入依赖的package包/类
@Override
public CommandInfo[] getPreferredCommands() {
    return delegate.getPreferredCommands();
}