Hi, Todd,
Check out: http://www.michaelmcgrady.com/button/. The DispatchAction
there is unlike the one here. I use something close but a little
different. Still, all you have to do is to give the property (name in
HTML) the suffix you specifiy as the DISPATCH_METHOD_SUFFIX (see
below). I use ".method". NOTE THAT THIS LEAVES YOU FREE TO SPECIFY
WHATEVER YOU WANT AS THE parameter in the action mapping and as the
value of the property in the submit, button, etc. This gives you all
sorts of cool things you can do.
I use:
public abstract class StateBaseAction
extends Action {
private static final String DISPATCH_METHOD_SUFFIX = ".method";
private static final String EXECUTE = "execute";
private static final String PERFORM = "perform";
private static final String DISPATCH_RECURSIVE = "dispatch.recursive";
private static final String DISPATCH_METHOD = "dispatch.method";
protected HashMap methods = new HashMap();
protected Class [] types = { ActionMapping.class,
ActionForm.class,
HttpServletRequest.class,
HttpServletResponse.class };
public abstract ActionForward execute(ActionMapping mapping,
ActionForm form,
HttpServletRequest request,
HttpServletResponse response)
throws IOException,
ServletException,
NoSuchMethodException;
protected void saveMessages(HttpServletRequest request,
ActionMessages errors) {
if ((errors == null) || errors.isEmpty()) {
request.removeAttribute(Globals.ERROR_KEY);
return;
}
request.setAttribute(Globals.ERROR_KEY, errors);
}
public String getMessage(HttpServletRequest request,
String key)
throws IOException,
ServletException {
HttpSession session = request.getSession();
Locale locale =
(Locale)session.getAttribute(Globals.LOCALE_KEY);
MessageResources messages = this.getResources(request);
return messages.getMessage(locale,key);
}
protected ActionForward method(Action action,
ActionMapping mapping,
ActionForm form,
HttpServletRequest request,
HttpServletResponse response)
throws Exception {
Class clazz = action.getClass();
String methodName = getMethodName(request,mapping);
if(methodName == null) {
unspecified(mapping,form,request,response);
} else if (EXECUTE.equals(methodName) || PERFORM.equals(methodName)){
MessageResources messages = MessageResources.getMessageResources
("org.apache.struts.actions.LocalStrings");
String message = messages.getMessage(DISPATCH_RECURSIVE,
mapping.getPath());
throw new ServletException(message);
}
Method method = null;
try {
method = getMethod(clazz,methodName);
} catch(NoSuchMethodException nsme) {
MessageResources messages = MessageResources.getMessageResources
("org.apache.struts.actions.LocalStrings");
String message = messages.getMessage(DISPATCH_METHOD,
mapping.getPath(), methodName);
throw nsme;
}
ActionForward forward = null;
try {
Object args[] = { mapping, form, request, response };
forward = (ActionForward)method.invoke(action, args);
} catch(ClassCastException cce) {
StdOut.log(SiteConstant.ERROR_LOG,"StateBaseAction error 108 = "
+ cce.getMessage());
} catch(IllegalAccessException iae) {
StdOut.log(SiteConstant.ERROR_LOG,"StateBaseAction errorn 110 =
" + iae.getMessage());
} catch(InvocationTargetException ite) {
Throwable t = ite.getTargetException();
if (t instanceof Exception) {
StdOut.log(SiteConstant.ERROR_LOG,"StateBaseAction error 115 =
" + ((Exception)t).getMessage());
} else {
StdOut.log(SiteConstant.ERROR_LOG,"StateBaseAction error 117 =
" + ite.getMessage());
}
}
return forward;
}
private static String getMethodName(HttpServletRequest request,
ActionMapping mapping) {
String methodName = null;
String buttonValue = null;
String paramProperty = mapping.getParameter();
if((paramProperty != null)) {
int index = paramProperty.indexOf('.');
if(index > -1) {
methodName = paramProperty.substring(0,index);
} else {
return methodName = paramProperty;
}
}
Enumeration enum = request.getParameterNames();
while(enum.hasMoreElements()) {
buttonValue = (String)enum.nextElement();
if(buttonValue.indexOf(METHOD_SUFFIX) >= 0) {
methodName = buttonValue;
break;
}
}
if(methodName == null) {
return null;
}
return methodName.substring(0,methodName.indexOf('.'));
}
private Method getMethod(Class clazz,
String name)
throws NoSuchMethodException {
synchronized(methods) {
Method method = (Method) methods.get(name);
if (method == null) {
method = clazz.getMethod(name, types);
methods.put(name, method);
}
return (method);
}
}
protected ActionForward cancelled(ActionMapping mapping,
ActionForm form,
HttpServletRequest request,
HttpServletResponse response)
throws Exception {
return null;
}
}
Jack
<snip>
On Fri, 14 Jan 2005 07:35:46 -0500, [EMAIL PROTECTED]
<[EMAIL PROTECTED]> wrote:
>
> Jack,
> You have said that LookupDispatchAction is outdated and inefficient. I
> have at a minimum 6 different actions that need to be performed per page, not
> including load. What else would you recommend as a solution?
>
> Todd
</snip>
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