On 26/03/2012 16:42, Lars Huttar wrote: > I sent this email at the start of the weekend, so it may not have been > seen much. > However the NPE is blocking progress, so I'd like to see if anyone can > help me with it. > Anybody have ideas?
Lars, do you have any chance to share your project somewhere (github, gitorius...) so that it would be much easier to take a look at it? > After the difficulties of the last week or two, I'm starting to wonder > if we'd be better off going back to Cocoon 2.1.11. A colleague asked > me, why take the risk and time to move to Cocoon 3, when we have > Cocoon 2.1.11 working well? I gave the standard "2.1.11 is several > years old and will be increasingly unsupported" answer, but I had to > admit that the decision was not looking as good now as it seemed last > summer when C3 had a recent new alpha and even a beta candidate. > > Please don't take this as criticism of the Cocoon developers ... I > have been continually impressed at the readiness of the committers to > debug problems quickly and implement fixes. However I do wonder > whether there is just too much debugging left, to reach a stable state > in time for our work. Also I am concerned that since there doesn't > seem to be a roadmap for feature freeze, there may be no point at > which bugs will settle down so that a stable release can be completed. Cocoon 3 is alpha state, but you are working on a SNAPSHOT release of beta-1: this means that Cocoon 3.0 does not pretend - yet - to be officially stable. Despite of this, I can assure that my company and at least a couple of other companies have several production applications based on Cocoon 3.0, so my suggestion would be "keep pushing" ;-) Regards. > On 3/23/2012 3:08 PM, Lars Huttar wrote: >> Hello, >> >> I'm attempting to port our Cocoon 2.1.11 sitemap to C3, little by >> little. >> So far I have gotten a very simple pipeline to work: >> <map:match pattern="test.html"> >> <map:read src="test.html" /> >> </map:match> >> Hooray! >> >> However when I get a little more complicated, I get an exception: >> <!-- {map:1} = generator name, {map:2} = param, {map:3} = value --> >> <map:match pattern="generator/*/*/*/source"> >> <map:generate src="generators/{map:1}.xml" /> >> <map:serialize type="xml"/> >> </map:match> >> >> The "{map:1}" used to be just "{1}", but from the c3 samples it looks >> like we now should use "{map:1}". Fine. >> But when I try to call this pipeline, using "" in the browser, I get >> an empty response (status 200 OK, but zero bytes of content). And the >> cocoon.log has the following error (shown with preceding context): >> >> 2012-03-23 14:33:30,598 DEBUG 11202659@qtp-14536088-0 >> org.apache.cocoon.sitemap.node.MatchNode$MatcherContext - Matching: >> expression=generator/*/*/*/source, >> testValue=generator/languages-in-country/country_id/77/source, >> result={3=77, 2=country_id, 1=languages-in-country, >> 0=generator/languages-in-country/country_id/77/source} >> 2012-03-23 14:33:30,598 DEBUG 11202659@qtp-14536088-0 >> org.apache.cocoon.sitemap.node.AbstractSitemapNode - >> GenerateNode(src=generators/{map:1}.xml, >> type=url).invoke(/generator/languages-in-country/country_id/77/source) >> 2012-03-23 14:33:30,598 DEBUG 11202659@qtp-14536088-0 >> org.apache.cocoon.pipeline.AbstractPipeline - Adding component >> XMLGenerator(hashCode=29969233 >> internalGenerator=URLGenerator(hashCode=19145797 >> source=file:/C:/Users/HuttarL/Documents/work/c3/theParent/ethnologue-17-pub/src/main/resources/COB-INF/generators/languages-in-country.xml)) >> to pipeline [CachingPipeline(hashCode=7335482 components=[])]. >> 2012-03-23 14:33:30,598 DEBUG 11202659@qtp-14536088-0 >> org.apache.cocoon.sitemap.node.AbstractSitemapNode - >> SerializeNode(type=xml).invoke(/generator/languages-in-country/country_id/77/source) >> 2012-03-23 14:33:30,598 DEBUG 11202659@qtp-14536088-0 >> org.apache.cocoon.pipeline.AbstractPipeline - Adding component >> XMLSerializer(hashCode=8467590) to pipeline >> [CachingPipeline(hashCode=7335482 >> components=[XMLGenerator(hashCode=29969233 >> internalGenerator=URLGenerator(hashCode=19145797 >> source=file:/C:/Users/HuttarL/Documents/work/c3/theParent/ethnologue-17-pub/src/main/resources/COB-INF/generators/languages-in-country.xml))])]. >> 2012-03-23 14:33:30,599 INFO 11202659@qtp-14536088-0 >> org.apache.cocoon.servlet.RequestProcessor - Sitemap execution for >> /generator/languages-in-country/country_id/77/source took 2.818942 ms. >> 2012-03-23 14:33:30,600 ERROR 11202659@qtp-14536088-0 >> org.apache.cocoon.servlet.XMLSitemapServlet - Cocoon can't process >> the request. >> java.lang.NullPointerException: null >> at >> org.apache.cocoon.servlet.collector.ResponseHeaderCollector.isModifiedResponse(ResponseHeaderCollector.java:176) >> ~[cocoon-servlet-3.0.0-beta-1-SNAPSHOT.jar:3.0.0-beta-1-SNAPSHOT] >> at >> org.apache.cocoon.servlet.RequestProcessor.sendSitemapResponse(RequestProcessor.java:354) >> ~[cocoon-servlet-3.0.0-beta-1-SNAPSHOT.jar:3.0.0-beta-1-SNAPSHOT] >> at >> org.apache.cocoon.servlet.RequestProcessor.service(RequestProcessor.java:92) >> ~[cocoon-servlet-3.0.0-beta-1-SNAPSHOT.jar:3.0.0-beta-1-SNAPSHOT] >> at >> org.apache.cocoon.servlet.XMLSitemapServlet.service(XMLSitemapServlet.java:54) >> ~[cocoon-servlet-3.0.0-beta-1-SNAPSHOT.jar:3.0.0-beta-1-SNAPSHOT] >> at javax.servlet.http.HttpServlet.service(HttpServlet.java:820) >> [servlet-api-2.5-20081211.jar:na] >> >> Up to the error, everything seems to be going great: the source is >> expanded to "file:/C:/.../generators/languages-in-country.xml", which >> is a file that does exist, I double-checked. >> >> >> I also tried using named parameters, following the samples' example: >> <map:match pattern="generator/{genName}/{paramName}/{value}/source"> >> <map:generate src="generators/{map:genName}.xml" /> >> >> But the result was the same. >> >> So my questions are, (1) How to fix this NPE? but also (2) why do I >> see an empty HTTP response (status 200 OK) in the browser for certain >> errors (like this one), instead of an error message in the browser? >> Some errors do show up in the browser, but not this one. >> >> Thanks for any help. >> >> Lar -- Francesco Chicchiriccò Apache Cocoon PMC and Apache Syncope PPMC Member http://people.apache.org/~ilgrosso/ --------------------------------------------------------------------- To unsubscribe, e-mail: users-unsubscr...@cocoon.apache.org For additional commands, e-mail: users-h...@cocoon.apache.org