public NamingAlias() 
{
      this(null, null);
}

 public NamingAlias(String fromName,
    String toName) 
{
      this.fromName = fromName;
      this.toName = toName;
}

 public String getFromName() 
{
      return fromName;
}

Get the from name of the alias. This is the location where the LinkRef is bound under JNDI.

 public String getToName() 
{
      return toName;
}

Get the to name of the alias. This is the target name to which the LinkRef refers. The name is a URL, or a name to be resolved relative to the initial context, or if the first character of the name is ".", the name is relative to the context in which the link is bound.

 public  void setFromName(String name) throws NamingException 
{
      removeLinkRef(fromName);
      this.fromName = name;
      createLinkRef();
}

Set the from name of the alias. This is the location where the LinkRef is bound under JNDI.

 public  void setToName(String name) throws NamingException 
{
      this.toName = name;
      createLinkRef();
}

Set the to name of the alias. This is the target name to which the LinkRef refers. The name is a URL, or a name to be resolved relative to the initial context, or if the first character of the name is ".", the name is relative to the context in which the link is bound.

 protected  void startService() throws Exception 
{
      if( fromName == null )
         throw new IllegalStateException("fromName is null");
      if( toName == null )
         throw new IllegalStateException("toName is null");
      createLinkRef();
}

 protected  void stopService() throws Exception 
{
      removeLinkRef(fromName);
}