[stringtemplate-interest] Spaces around template attributes

[Steve Ebersole]

I got close.  I wishfully thought maybe this might work:
sortSpecification(sortKey,collationSpecification,orderingSpecification) ::= <<
<sortKey>< collationSpecification>< orderingSpecification>
>>

It just smooshed everything together
-> sortSpecification(sortKey="xyz",collationSpecification="collate abc",orderingSpecification="asc")

lead to:
xyzcollate abcasc

while
-> sortSpecification(sortKey="xyz",collationSpecification=null,orderingSpecification="asc")

gave:
xyzasc

>From the second example you can see it is doing TheRightThing WRT to the
embedded space when the attribute is undefined/null.


On Wed, 2009-04-29 at 14:33 -0700, Terence Parr wrote:
> On Apr 29, 2009, at 7:59 AM, Michael wrote:
> 
> > Am Wednesday 29 April 2009 16:43:30 schrieb Steve Ebersole:
> >> I am trying to deal with extra spaces in my stringtemplate output  
> >> when
> >> attribute values used within the template are null/empty.  I figure  
> >> this
> >> has to be a pretty common requirement, so I thought I'd ask here  
> >> how to
> >> accomplish this.
> >>
> >> For example, I have a template like:
> >> sortSpecification 
> >> (sortKey,collationSpecification,orderingSpecification) ::=
> >> << <sortKey> <collationSpecification> <orderingSpecification>
> >>
> >
> > you can try it with list construction, *untested* :
> >
> > sortSpecification 
> > (sortKey,collationSpecification,orderingSpecification) ::=
> > <<
> > <[sortKey, collationSpecification, orderingSpecification];  
> > separator=' '>
> >>>
> 
> something like this seems best.  almost common enough thtat we need an  
> operator for that!
> 
> Ter
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-- 
Steve Ebersole <steve at hibernate.org>
Hibernate.org