Re: Sending dynamic parameters to a forward
> Here's something I'm using to accomplish this:
> http://www.systemmobile.com/wp/?p=114
> It's pretty simple, but can be refit to be fairly complex.
>
I've done something similar too, just another approach using other extension
points in Struts.
I extend the ActionForward adding some properties to hold the arguments.
I extended the ActionMapping adding a transient HttpServletRequest and
ActionForm. These values where staged by a base Action class.
ActionForward forward = null;
if (mapping instanceof IRusttsActionMapping) {
((IRusttsActionMapping) mapping).setState(form, request);
}
The extended ActionMapping had an overridden findForward that passed the
request and form bean to the ActionForward.
public ActionForward findForward(String name) {
ActionForward forward = super.findForward(name);
if ((forward != null)
&& (forward instanceof IRusttsForwardAction)
&& (request != null)
&& (form != null)) {
forward =
((IRusttsForwardAction) forward).stageForward(form, request);
}
return forward;
}
The stageForward method of the action forward would add the parameters to the
path.
/**
* This is a factory method to handle the prorogation
* of key arguments to the target of the action forward.
* if the action is a redirect, a query string of encoded
* arguments will be added to the path. Otherwise the data
* (Map) will be staged on the request.
*/
public ActionForward stageForward(
ActionForm form,
HttpServletRequest request) {
ActionForward targetForward = null;
try {
Map sourceArgs = BeanUtils.describe(form);
String[] targetNames = getArgs();
Map targetArgs = (Map) new TreeMap();
for (int i = 0; i < targetNames.length; ++i) {
if (sourceArgs.containsKey(targetNames[i])) {
Object arg = sourceArgs.get(targetNames[i]);
if (arg != null)
targetArgs.put(targetNames[i], arg);
arg = null;
}
}
if (redirect) {
if (!targetArgs.isEmpty()) {
StringBuffer buff = new StringBuffer(path);
//look for an existing query string delimiter
boolean firstArg = true;
if (buff.toString().indexOf('?') > -1) {
firstArg = false;
} else
buff.append("?");
Iterator vi = targetArgs.keySet().iterator();
while (vi.hasNext()) {
String name = (String) vi.next();
Object arg = targetArgs.get(name);
if (arg != null) {
String value = URLEncoder.encode(arg.toString());
buff.append((firstArg) ? "" : "&").append(
name).append(
"=").append(
value);
firstArg = false;
value = null;
}
arg = null;
name = null;
}
//build an new ActionForward with the new query
targetForward = new ActionForward(buff.toString(), true);
buff = null;
vi = null;
} else
targetForward = this;
} else {
//stage the data pickle in request scope for the next page
request.setAttribute(
com.rustts.Globals.RUSTTS_FORWARD_KEY,
targetArgs);
targetForward = this;
}
targetNames = null;
sourceArgs = null;
targetArgs = null;
} catch (Exception e) {
targetForward = this;
}
return targetForward;
}
It looks like a lot of code but after implemented provided a declarative way to
handle passing parameters transparent of forward verses redirect.
Gary
>
> On 6/14/05, Frank W. Zammetti <[EMAIL PROTECTED]> wrote:
> > Sorry, my bad... it's not setURL, it's setPath. It's actually a method
> > of ForwardConfig, which ActionForward extends. Look in the third table
> > down in the link you sent, the section labeled "Methods inherited from
> > class org.apache.struts.config.ForwardConfig".
> >
> > That's what I get for going from memory ;)
> >
> > Frank
> >
> > Zarar Siddiqi wrote:
> > > Where do you see the af.setURL(String) method in the ActionForward class?
> > > http://struts.apache.org/api/org/apache/struts/action/ActionForward.html
> > >
> > > I had a similar problem where dynamic values needed to be passed in via
> > > an ActionForward but I wasn't able to find something as simple as you
> > > suggest. I had to store the values in session scope (because the
> > > ActionForward had redirect=true) and then clean up the session in my
> > > receiving code.
> > >
> > > So you store the values that you are passing in session scope for a
> > > quick millisecond while you forward and then clean up once you're in the
> > > called method.
> > >
> > > Zarar
> > >
> > >
> > > - Original Message - From: "Frank W. Zammetti"
>
Re: Sending dynamic parameters to a forward
Here's something I'm using to accomplish this:
http://www.systemmobile.com/wp/?p=114
It's pretty simple, but can be refit to be fairly complex.
On 6/14/05, Frank W. Zammetti <[EMAIL PROTECTED]> wrote:
> Sorry, my bad... it's not setURL, it's setPath. It's actually a method
> of ForwardConfig, which ActionForward extends. Look in the third table
> down in the link you sent, the section labeled "Methods inherited from
> class org.apache.struts.config.ForwardConfig".
>
> That's what I get for going from memory ;)
>
> Frank
>
> Zarar Siddiqi wrote:
> > Where do you see the af.setURL(String) method in the ActionForward class?
> > http://struts.apache.org/api/org/apache/struts/action/ActionForward.html
> >
> > I had a similar problem where dynamic values needed to be passed in via
> > an ActionForward but I wasn't able to find something as simple as you
> > suggest. I had to store the values in session scope (because the
> > ActionForward had redirect=true) and then clean up the session in my
> > receiving code.
> >
> > So you store the values that you are passing in session scope for a
> > quick millisecond while you forward and then clean up once you're in the
> > called method.
> >
> > Zarar
> >
> >
> > - Original Message ----- From: "Frank W. Zammetti"
> > <[EMAIL PROTECTED]>
> > To: "Struts Users Mailing List"
> > Cc: "Struts Users Mailing List"
> > Sent: Tuesday, June 14, 2005 9:27 AM
> > Subject: Re: Sending dynamic parameters to a forward
> >
> >
> >> You can, IIRC, append a query string to the URL returned by your
> >> forward... off the top of my head, it would look something like
> >> this... in
> >> Action 1:
> >>
> >> String param1Val = "someValue1";
> >> String param2Val = "someValue2";
> >> String queryString = "?param1=" + param1Val + "¶m2 = " + param2Val;
> >> ActionForward af = new
> >> ActionForward(mapping.findForward("ForwardToAction2"));
> >> af.setURL(af.getURL() + queryString);
> >> return af;
> >>
> >> You'll probably want to encode the parameter values, I'd suggest Commons
> >> Codec for that.
> >>
> >> --
> >> Frank W. Zammetti
> >> Founder and Chief Software Architect
> >> Omnytex Technologies
> >> http://www.omnytex.com
> >>
> >> On Tue, June 14, 2005 7:52 am, tarek.nabil said:
> >>
> >>> Hi Everyone,
> >>>
> >>> I have an action (Action1) which when completed successfully, forwards
> >>> to another action (Action2). I need to be able to send dyanamic
> >>> parameters to Action2. I thought about putting the parameters as request
> >>> attributes, but the problem here is that Action2 can be called directly
> >>> using a link from some pages and this case, the parameters will be send
> >>> as request parameters rather than attributes.
> >>>
> >>> I can write code to look in the request attributes and if not found, it
> >>> can check the request parameters, but I was hoping there's another way
> >>> to do it. I thought about setting the redirect attribute to true on this
> >>> forward but I still wouldn't know how to append parameters with dynamic
> >>> values to the forward while forwarding to it from Action1.
> >>>
> >>> Any ideas?
> >>>
> >>> -
> >>> To unsubscribe, e-mail: [EMAIL PROTECTED]
> >>> For additional commands, e-mail: [EMAIL PROTECTED]
> >>>
> >>>
> >>
> >>
> >> -
> >> To unsubscribe, e-mail: [EMAIL PROTECTED]
> >> For additional commands, e-mail: [EMAIL PROTECTED]
> >>
> >
> >
> >
> > -
> > To unsubscribe, e-mail: [EMAIL PROTECTED]
> > For additional commands, e-mail: [EMAIL PROTECTED]
> >
> >
> >
> >
> >
>
> --
> Frank W. Zammetti
> Founder and Chief Software Architect
> Omnytex Technologies
> http://www.omnytex.com
>
>
> -
> To unsubscribe, e-mail: [EMAIL PROTECTED]
> For additional commands, e-mail: [EMAIL PROTECTED]
>
>
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Re: Sending dynamic parameters to a forward
Sorry, my bad... it's not setURL, it's setPath. It's actually a method
of ForwardConfig, which ActionForward extends. Look in the third table
down in the link you sent, the section labeled "Methods inherited from
class org.apache.struts.config.ForwardConfig".
That's what I get for going from memory ;)
Frank
Zarar Siddiqi wrote:
Where do you see the af.setURL(String) method in the ActionForward class?
http://struts.apache.org/api/org/apache/struts/action/ActionForward.html
I had a similar problem where dynamic values needed to be passed in via
an ActionForward but I wasn't able to find something as simple as you
suggest. I had to store the values in session scope (because the
ActionForward had redirect=true) and then clean up the session in my
receiving code.
So you store the values that you are passing in session scope for a
quick millisecond while you forward and then clean up once you're in the
called method.
Zarar
- Original Message - From: "Frank W. Zammetti"
<[EMAIL PROTECTED]>
To: "Struts Users Mailing List"
Cc: "Struts Users Mailing List"
Sent: Tuesday, June 14, 2005 9:27 AM
Subject: Re: Sending dynamic parameters to a forward
You can, IIRC, append a query string to the URL returned by your
forward... off the top of my head, it would look something like
this... in
Action 1:
String param1Val = "someValue1";
String param2Val = "someValue2";
String queryString = "?param1=" + param1Val + "¶m2 = " + param2Val;
ActionForward af = new
ActionForward(mapping.findForward("ForwardToAction2"));
af.setURL(af.getURL() + queryString);
return af;
You'll probably want to encode the parameter values, I'd suggest Commons
Codec for that.
--
Frank W. Zammetti
Founder and Chief Software Architect
Omnytex Technologies
http://www.omnytex.com
On Tue, June 14, 2005 7:52 am, tarek.nabil said:
Hi Everyone,
I have an action (Action1) which when completed successfully, forwards
to another action (Action2). I need to be able to send dyanamic
parameters to Action2. I thought about putting the parameters as request
attributes, but the problem here is that Action2 can be called directly
using a link from some pages and this case, the parameters will be send
as request parameters rather than attributes.
I can write code to look in the request attributes and if not found, it
can check the request parameters, but I was hoping there's another way
to do it. I thought about setting the redirect attribute to true on this
forward but I still wouldn't know how to append parameters with dynamic
values to the forward while forwarding to it from Action1.
Any ideas?
-
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
-
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
-
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
--
Frank W. Zammetti
Founder and Chief Software Architect
Omnytex Technologies
http://www.omnytex.com
-
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Re: Sending dynamic parameters to a forward
On 6/14/05, Zarar Siddiqi <[EMAIL PROTECTED]> wrote:
> Where do you see the af.setURL(String) method in the ActionForward class?
> http://struts.apache.org/api/org/apache/struts/action/ActionForward.html
>
> I had a similar problem where dynamic values needed to be passed in via an
> ActionForward but I wasn't able to find something as simple as you suggest.
> I had to store the values in session scope (because the ActionForward had
> redirect=true) and then clean up the session in my receiving code.
>
> So you store the values that you are passing in session scope for a quick
> millisecond while you forward and then clean up once you're in the called
> method.
>
> Zarar
This is the one that I use. To make it proper, it should be urlencoded too.
/**
* Creates ActionForward object with URL parameters.
*
* @param actionMapping action mapping object
* @param forwardNamemapping name
* @param urlParams array of "key=value" strings which
* should be added to actionForward path
* as HTTP GET parameters
*
* @return ActionForward object with GET parameters
*/
public static ActionForward goForward(ActionMapping actionMapping,
String forwardName,
String[] urlParams)
{
/*
* Find ActionForward object, defined in struts-config.xml
*/
ActionForward actionForward = actionMapping.findForward(forwardName);
if (actionForward == null) return null;
/*
* Build URL parameters
*/
String actionPath = actionForward.getPath();
if (actionPath != null) {
for (int i = 0; i < urlParams.length; i++) {
actionPath += i==0 ? "?" : "&";
actionPath += urlParams[i];
}
}
/*
* Create new ActionForward object. Stuts does not
* allow to modify ActionForward objects, statically
* defined in struts-config.xml
*/
ActionForward patchedForward =
new ActionForward(actionForward.getName(),
actionPath,
actionForward.getRedirect()
);
return patchedForward;
}
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Re: Sending dynamic parameters to a forward
Where do you see the af.setURL(String) method in the ActionForward class?
http://struts.apache.org/api/org/apache/struts/action/ActionForward.html
I had a similar problem where dynamic values needed to be passed in via an
ActionForward but I wasn't able to find something as simple as you suggest.
I had to store the values in session scope (because the ActionForward had
redirect=true) and then clean up the session in my receiving code.
So you store the values that you are passing in session scope for a quick
millisecond while you forward and then clean up once you're in the called
method.
Zarar
- Original Message -
From: "Frank W. Zammetti" <[EMAIL PROTECTED]>
To: "Struts Users Mailing List"
Cc: "Struts Users Mailing List"
Sent: Tuesday, June 14, 2005 9:27 AM
Subject: Re: Sending dynamic parameters to a forward
You can, IIRC, append a query string to the URL returned by your
forward... off the top of my head, it would look something like this... in
Action 1:
String param1Val = "someValue1";
String param2Val = "someValue2";
String queryString = "?param1=" + param1Val + "¶m2 = " + param2Val;
ActionForward af = new
ActionForward(mapping.findForward("ForwardToAction2"));
af.setURL(af.getURL() + queryString);
return af;
You'll probably want to encode the parameter values, I'd suggest Commons
Codec for that.
--
Frank W. Zammetti
Founder and Chief Software Architect
Omnytex Technologies
http://www.omnytex.com
On Tue, June 14, 2005 7:52 am, tarek.nabil said:
Hi Everyone,
I have an action (Action1) which when completed successfully, forwards
to another action (Action2). I need to be able to send dyanamic
parameters to Action2. I thought about putting the parameters as request
attributes, but the problem here is that Action2 can be called directly
using a link from some pages and this case, the parameters will be send
as request parameters rather than attributes.
I can write code to look in the request attributes and if not found, it
can check the request parameters, but I was hoping there's another way
to do it. I thought about setting the redirect attribute to true on this
forward but I still wouldn't know how to append parameters with dynamic
values to the forward while forwarding to it from Action1.
Any ideas?
-
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
-
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
-
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
Re: Sending dynamic parameters to a forward
You can, IIRC, append a query string to the URL returned by your
forward... off the top of my head, it would look something like this... in
Action 1:
String param1Val = "someValue1";
String param2Val = "someValue2";
String queryString = "?param1=" + param1Val + "¶m2 = " + param2Val;
ActionForward af = new
ActionForward(mapping.findForward("ForwardToAction2"));
af.setURL(af.getURL() + queryString);
return af;
You'll probably want to encode the parameter values, I'd suggest Commons
Codec for that.
--
Frank W. Zammetti
Founder and Chief Software Architect
Omnytex Technologies
http://www.omnytex.com
On Tue, June 14, 2005 7:52 am, tarek.nabil said:
> Hi Everyone,
>
> I have an action (Action1) which when completed successfully, forwards
> to another action (Action2). I need to be able to send dyanamic
> parameters to Action2. I thought about putting the parameters as request
> attributes, but the problem here is that Action2 can be called directly
> using a link from some pages and this case, the parameters will be send
> as request parameters rather than attributes.
>
> I can write code to look in the request attributes and if not found, it
> can check the request parameters, but I was hoping there's another way
> to do it. I thought about setting the redirect attribute to true on this
> forward but I still wouldn't know how to append parameters with dynamic
> values to the forward while forwarding to it from Action1.
>
> Any ideas?
>
> -
> To unsubscribe, e-mail: [EMAIL PROTECTED]
> For additional commands, e-mail: [EMAIL PROTECTED]
>
>
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Re: Sending dynamic parameters to a forward
http://marc.theaimsgroup.com/?l=struts-user&m=111841184227894&w=2 > I have an action (Action1) which when completed successfully, forwards > to another action (Action2). I need to be able to send dyanamic > parameters to Action2 - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Sending dynamic parameters to a forward
Hi Everyone, I have an action (Action1) which when completed successfully, forwards to another action (Action2). I need to be able to send dyanamic parameters to Action2. I thought about putting the parameters as request attributes, but the problem here is that Action2 can be called directly using a link from some pages and this case, the parameters will be send as request parameters rather than attributes. I can write code to look in the request attributes and if not found, it can check the request parameters, but I was hoping there's another way to do it. I thought about setting the redirect attribute to true on this forward but I still wouldn't know how to append parameters with dynamic values to the forward while forwarding to it from Action1. Any ideas? - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
