BTW, I am using template recursion in many of my templates and it worked
just fine. So, might be your specific logic somewhere.
On Thu, Oct 15, 2009 at 5:37 AM, Daniel Dekany <ddekany@freemail.hu> wrote:
> Thursday, October 15, 2009, 1:18:13 PM, rizzz86 wrote:
>
> > What more I have found is that the parameter of the macro (i.e. menuList)
> > might be creating a problem.
> >
> > Example:
> >
> > I have created two macros "menugenerator1" and "menugenerator2" as
> follows:
> >
> >>> <#macro menugenerator1 menuList>
> >>> <#if menuList??>
> >>> <#foreach element in menuList>
> >>> ${element.url} ${element.title} ..... //
> >>> Generates
> >>> Menu
> >>> <#if element.children??>
> >>> <@menugenerator2
> menuList=element.children/>
> >>> </#if>
> >>> </#foreach>
> >>> </#if>
> >>> </#macro>
> >
> >
> >>> <#macro menugenerator2 menuList>
> >>> <#if menuList??>
> >>> <#foreach element in menuList>
> >>> ${element.url} ${element.title} ..... //
> >>> Generates
> >>> Menu
> >>> <#if element.children??>
> >>> <@menugenerator2
> menuList=element.children/>
> >>> </#if>
> >>> </#foreach>
> >>> </#if>
> >>> </#macro>
> >
> > If I call 2nd macro inside first macro (as shown) ... the 2nd macro will
> > actually does NOT iterate over the child of element (i.e. element.child
> > passed as parameter in 1st macro). But it iterates over the same element
> > (that is in macro 1) and that seems to be the never ending loop.
>
> Then, as I said, maybe you indeed messed up the object graph in the
> data-model. Check your *Java* code. It's hardly a FreeMarker problem.
>
> > Another thing is that when I changed the "parameter names" of both the
> > macros (i.e. menuList and menuList1 respectvly) ... it calls the right
> list
> > in macro 2 (i.e. element.children).
> >
> > Now what i am thinking is that how can I call the recursive macro with
> > different parameter names ?? Got something :confused:
>
> Look, if you think there is a bug regarding recursion or parameter
> names (improbable), construct a self-containing minimal example, and
> post that. Now I just can't know what did you mess up where, that may
> lead you to false conclusions regarding what matters and what doesn't.
> Like, there is nothing special in recursion; when a method calls
> itself, the same rules apply as if you call another method. It's not a
> special case.
>
> > rizzz86
> >
> >
> >
> > Daniel Dekany wrote:
> >>
> >> Thursday, October 15, 2009, 12:52:31 PM, Daniel Dekany wrote:
> >>
> >>> Thursday, October 15, 2009, 6:00:35 AM, rizzz86 wrote:
> >>>
> >>>> Hi,
> >>>>
> >>>> I am trying to call <#macro> recursively.
> >>>> I am getting the StackOVerFlowError, which means that their are
> >>>> unlimited
> >>>> number of calls made wiithin a macro.
> >>>>
> >>>> What I was actually doing is "Rendering a Menu". I have a List that
> >>>> contains
> >>>> a menu bean. That menu bean can also have its children and these
> >>>> children
> >>>> are also a list containing a menu bean.
> >>>>
> >>>> example:
> >>>>
> >>>> class MenuBean {
> >>>>
> >>>> String title;
> >>>> String url;
> >>>> List<MenuBean> children;
> >>>> etc..
> >>>> }
> >>>>
> >>>> I can have N numbers of children for each menu (no limit).
> >>>>
> >>>> My macro is as follows:
> >>>>
> >>>> <#macro menugenerator menuList>
> >>>> <#if menuList??>
> >>>> <#foreach element in menuList>
> >>>> ${element.url} ${element.title} ..... //
> >>>> Generates
> >>>> Menu
> >>>> <#if element.children??>
> >>>> <@menugenerator
> menuList=element.children/>
> >>>> </#if>
> >>>> </#foreach>
> >>>> </#if>
> >>>> </#macro>
> >>>>
> >>>> Any reasons for the Error :-?
> >>>
> >>> Maybe the children field, when there are no children, is an empty list
> >>> instead of null?
> >>
> >> Actually that would cause only one extra call... so it's not that.
> >>
> >>> Or... you managed to create a loop in the object
> >>> graph?
> >>>
> >>>
> >>
> >> --
> >> Best regards,
> >> Daniel Dekany
> >>
> >>
> >>
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> --
> Best regards,
> Daniel Dekany
>
>
>
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