Rainer Pruy pisze:
OTH, I just read in the "Default Expression Language" thread, it might
be necessary for supporting sevaral languages in parallel.
With this, indicating the language used with a certain syntactic scope
is no longer responsibility of a (per block) configuration only.
We are only talking about _default_ here that should be application or block-wide setting. If you
want to use language other than default you just write:
{languagePrefix:expression}
While at xml element level, an EL can be indicated using a special
attribute, this does not help with mixed content or attributes of such
elements.
From my point of view, this does require a special syntax for
expressions/string templates. Leading to a setup where a given syntax
({}, ${},%{},etc.) can be bound to an EL by the configuration, providing
a means for compatibility with "old" syntax bindings.
For the future I'd prefer a syntax that allows for indicting an EL by
expression/string template. A simplified syntax could be used for a
"default EL" also set with the (block level) configuration.
Not having thought it to the end, I currently imagine a syntax of say
"%tag{...}" where tag is a (prebound) indicator of an EL and "{...}" can
be used for default EL. This would also provide for a trivial escaping
if there is a "verbatim" EL that uses the expession/template as verbatim
value. (Ok, granted, it only will work for cases where balanced "{}"
will occur, other cases will need a per character escape means or a way
of specifying that a complete string or expression is to be used verbatim).
Just a view stray thoughts...
I guess you missed my first mail[1] of this thread where I explained how one would choose language
other than default. Such syntax is already implemented.
[1] http://article.gmane.org/gmane.text.xml.cocoon.devel/74640
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Grzegorz Kossakowski
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