On 21.06.2013 10:20, Simone Tripodi wrote:
Hi Ceki!
On Thu, Jun 20, 2013 at 11:13 PM, ceki <[email protected]> wrote:
On 20.06.2013 09:44, Simone Tripodi wrote:
Hi Ceki/all!
due to my recent involvement in Modello[1], I started experimenting
how the Modello approach could benefit existing projects that require
to parse XML (but also JSON and YAML) configurations, and took Logback
as a good example where doing some experiments...
What made me curious to made that experiment, is the fact that current
Joran approach is based to SAX APIs + reflection - elements are
introspected at runtime and components will be injected - while the
Modello approach is based on streaming APIs and introspection analysis
is performed at compile-time, generating the "parse-tree" and the
(un)marshallers.
Is there introspection support in Modello?
Nope, unfortunately :( it generates readers/writers that just invoke
plain old setters/getters/adders for generated models, but that is why
maybe is efficient.
How does Modello know what setters and getters to generate? Do you
have to manually specify each setter and getter to generate? There
must be some automation because AFAIK Maven uses Modello for reading
pom.xml, and Maven can inject parameters specificied in the pom into
Mojos...
[snip]
may I can kindly ask you to point me to the current XML schema for
Joran configuration? Once complete, I think you could evaluate an
experimental Joran2 module - which can co-live nicely with existing
Joran...
Currently there is no XSD for Joran. Creating one is on my to do
list. Moreover, the fact that Modello can create the XSD from the
Model is one of the reasons I am interested in Modello.
For logback-classic, the "spec" is "defined" by the rules defined in
[1] and [2]. Whenever Joran sees an XML element for which there is no
defined rule, it attempts to apply the implicit injection rule. The
implicit injection rule tries to inject value of the the current XML
element into the latest instantiated logback component.
I've got a train to catch. More later.
[1] http://tinyurl.com/JoranConfiguratorBase
[2] http://tinyurl.com/JoranConfigurator
All the best,
-Simo
http://people.apache.org/~simonetripodi/
http://twitter.com/simonetripodi
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Ceki
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