Maybe there is some OGNL trick, but I wouldn't know how. Are you sure you want to change manipulate arrays in your pages (view)? Maybe there is a valid use case for it, but it sounds weird to me.
musachy On 6/6/07, Ezequiel Puig <[EMAIL PROTECTED]> wrote:
Musachy, Thanks a lot for the comments about the <s:url> tag. About the other questions i proposed, do you know if it's possible to manipulate arrays with the s2 tags ?? -----Message d'origine----- De: Musachy Barroso [mailto:[EMAIL PROTECTED] Envoyé: mercredi 6 juin 2007 16:41 À: Struts Users Mailing List Objet: Re: [s2] Collection, array and <s:url> tag. I logged this ticket for it: https://issues.apache.org/struts/browse/WW-1971 musachy On 6/6/07, Musachy Barroso <[EMAIL PROTECTED]> wrote: > > Looking at the code, only String[] is transformed into parameters. For > anything else, its toString() will be called and used as the value of the > parameter. > > I think Lists and Sets should be processed as String[] are (calling the > toString() on each element). Maps should be converted to parameters using > the key (toString() of the key element) as the name of the parameter and the > value (toString() of the value) as the value of course. > > > //I used to think that you could use an iterator tag inside a url tag, but > that doesn't work > > musachy > > On 6/6/07, Ezequiel Puig < [EMAIL PROTECTED]> wrote: > > > > Hi, > > > > > > > > I have been using struts 2 since a while and there is some things about > > the <s:url> tag i don't understant. > > > > > > > > Let's say we have an array in our action (with the getters and setters): > > > > > > > > private String[] myArray; > > > > > > > > public String[] getMyArray() { > > > > return myArray; > > > > } > > > > public void setMyArray(String[] myArray) { > > > > this.myArray = myArray; > > > > } > > > > > > > > and that in our action, we do something to initializate the array: > > > > > > > > String[] arr = new String[3]; > > > > arr[0] = "Aa"; > > > > arr[1] = "Bb"; > > > > arr[2] = "Cc"; > > > > > > > > Now, if in our JSP we use the <s:url> tag: > > > > > > > > <a href="<s:url includeParams="none" action="TestUrlArray.action "> > > > > <s:param name="myArray" value="myArray" /> > > > > </s:url>" >Use Link > > > > </a> > > > > > > > > we can see that the created url is: > > > > > > > > TestUrlArray.action?myArray=Aa&myArray=Bb&myArray=Cc > > > > > > > > Also, in the destination action, we are able to recover the information > > from the variable "myArray" if we have defined something like "private > > String[] myArray". > > > > > > > > So for, so good. > > > > > > > > Now, let's see the Collections: > > > > > > > > In the action we will have: > > > > > > > > private Collection<String> myCollection = new ArrayList<String>(); > > > > > > > > public Collection <String> getMyCollection () { > > > > return myCollection; > > > > } > > > > public void setMyList(Collection <String> myCollection) { > > > > this.myCollection = myCollection; > > > > } > > > > > > > > we initialize the collection: > > > > > > > > Collection<String> col = new ArrayList<String>(); > > > > col.add("Aa"); > > > > col.add("Bb"); > > > > col.add("Cc"); > > > > setMyCollection(col); > > > > > > > > Finally, we use the <s:url> tag: > > > > > > > > <a href="<s:url includeParams="none" action=" TestUrlArray.action "> > > > > <s:param name="myCollection" value="myCollection" /> > > > > </s:url>" >Use Link > > > > </a> > > > > > > > > Here, the created link looks like: > > TestUrlArray.action?myCollection=[Aa,+Bb,+Cc] > > > > > > > > But, if we try to recover the collection in the destination action > > (where offcourse we have defined "Collection<String> col = new > > ArrayList<String>();" ), we will see that we recover a collection of > > only one element, and that this element is our old collection (the one > > with 3 elements). > > > > > > > > Now, it's time for questions: > > > > > > > > 1) Is it possible to manipulate arrays with the s2 tags ? (by > > manipulate, i mean create a new array, add an element to an existing > > array, remove an element, etc.) > > > > 2) Is it possible to manipulate collections with the s2 tags ? > > (same meaning to manipulate) > > > > 3) Is there a work-arround to recover a Collection not as a new > > collection of one element that contains a collection but as a new > > collection that is like the collection we passed ? > > > > > > > > > > > > Well, any ideas will be reallly wellcome :-) > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > -- > "Hey you! Would you help me to carry the stone?" Pink Floyd -- "Hey you! Would you help me to carry the stone?" Pink Floyd --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
-- "Hey you! Would you help me to carry the stone?" Pink Floyd
