Yes, Reinhard, I agree very much with the observation that everything
that influences the output must go in the cache key.
OK, I use the user group again, because I am convinced that this will be
of use to the whole cocoon community: here I go.
I write a cocoon Generator. It extends AbstractSAXGenerator and
implements CachingPipelineComponent. In order to make good use of the
caching mechanism, we use a "ParameterCacheKey", whereby we will use the
request parameters to construct the cache key. This makes sense.
Consider the methods setup() and constructCacheKey:
public void setup(Map<String, Object> parameters) {
request = HttpContextHelper.getRequest(parameters);
session = request.getSession(true);
}
and
public CacheKey constructCacheKey() {
if (request == null) {
System.out.println("Sapperment: request is null when
constructCacheKey is called...");
}
Map<String,String> parameters = request.getParameterMap();
ParameterCacheKey cacheKey = new ParameterCacheKey(parameters);
return cacheKey;
}
It is observed now that constructCachekey is called before setup is. :-(
What to do?
Let's find a way and put it as recommended practice, for this will
affect virtually any future cocoon app.
Ideas?
Jos
> Reinhard Poetz commented on COCOON3-53:
> ---------------------------------------
>
> The cache key has to contain everything that influences the output produced
> by the generator.
>
> I have no idea why HTML serialization makes a difference, but again, the logs
> should give you some hints.
>
> > Cocoon 3: XMLSerializer caches all
> > ----------------------------------
> >
> > Key: COCOON3-53
> > URL: https://issues.apache.org/jira/browse/COCOON3-53
> > Project: Cocoon 3
> > Issue Type: Bug
> > Components: cocoon-pipeline
> > Reporter: Jos Snellings
> >
> > After startup, any pipeline/matcher ending in an xml-serializer will
> > produce the output of the first request after server startup, regardless of
> > the url, let alone parameters.
> > So the first xml pipe that is activated produces the expected output.
> > All subsequent calls will echo that output, whatever the url or parameters.
> > It takes a server restart to make a pipeline ending in an xml serializer
> > work again.
>
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