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From Thorsten Scherler <thors...@apache.org>
Subject Re: c3: null pointer exception in ResponseHeaderCollector.isModifiedResponse
Date Mon, 26 Mar 2012 22:39:54 GMT
On 03/26/2012 07:09 PM, Lars Huttar wrote:
> On 3/26/2012 11:47 AM, Thorsten Scherler wrote:
>> On 03/26/2012 04:49 PM, Francesco Chicchiriccò wrote:
>>> ...
>>> 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" ;-)
>>
>> This said, I should have said much earlier something but the 
>> discussion about c3 belongs on the dev list until we have an official 
>> release. If you want to keep up with your development I strongly 
>> recommend to sync c3 trunk regular.
>
> Ok, thanks for this tip. I will send future questions to the dev list.
>
>
>> ...
>> What does
>> <map:generate src="generators/languages-in-country.xml" /> gives you 
>> if you add it directly?
>
> For that we get a very similar result:
>
> 2012-03-26 12:02:32,052 DEBUG 4650852@qtp-775647-0 
> org.apache.cocoon.servletservice.DispatcherServlet - 
> DispatcherServlet: service 
> servlet=org.apache.cocoon.servlet.XMLSitemapServlet@1e247e2 mountPath= 
> servletPath= 
> pathInfo=/generator/languages-in-country/country_id/77/source
> 2012-03-26 12:02:32,065 DEBUG 4650852@qtp-775647-0 
> org.apache.cocoon.servlet.RequestProcessor - Setting the baseURL to 
> file:/C:/Users/HuttarL/Documents/work/c3/theParent/e-17-pub/./src/main/resources/COB-INF/
> 2012-03-26 12:02:32,149 INFO  4650852@qtp-775647-0 
> org.apache.cocoon.servlet.RequestProcessor - Performing GET request at 
> /generator/languages-in-country/country_id/77/source
> 2012-03-26 12:02:32,149 DEBUG 4650852@qtp-775647-0 
> org.apache.cocoon.servlet.RequestProcessor - The base URL for this 
> request is 
> file:/C:/Users/HuttarL/Documents/work/c3/theParent/e-17-pub/./src/main/resources/COB-INF/
> 2012-03-26 12:02:32,169 DEBUG 4650852@qtp-775647-0 
> org.apache.cocoon.sitemap.node.AbstractSitemapNode - 
> PipelinesNode.invoke(/generator/languages-in-country/country_id/77/source)
> 2012-03-26 12:02:32,170 DEBUG 4650852@qtp-775647-0 
> org.apache.cocoon.sitemap.node.AbstractSitemapNode - 
> PipelineNode(caching).invoke(/generator/languages-in-country/country_id/77/source)
> 2012-03-26 12:02:32,191 DEBUG 4650852@qtp-775647-0 
> org.apache.cocoon.sitemap.node.AbstractSitemapNode - 
> MatchNode.invoke(/generator/languages-in-country/country_id/77/source)
> 2012-03-26 12:02:32,197 DEBUG 4650852@qtp-775647-0 
> org.apache.cocoon.sitemap.node.MatchNode$MatcherContext - Matching: 
> expression=test.html, 
> testValue=generator/languages-in-country/country_id/77/source, 
> result=null
> 2012-03-26 12:02:32,197 DEBUG 4650852@qtp-775647-0 
> org.apache.cocoon.sitemap.node.AbstractSitemapNode - 
> MatchNode.invoke(/generator/languages-in-country/country_id/77/source)
> 2012-03-26 12:02:32,197 DEBUG 4650852@qtp-775647-0 
> org.apache.cocoon.sitemap.node.MatchNode$MatcherContext - Matching: 
> expression=generator/languages-in-country/country_id/77/source, 
> testValue=generator/languages-in-country/country_id/77/source, 
> result={0=generator/languages-in-country/country_id/77/source}
> 2012-03-26 12:02:32,198 DEBUG 4650852@qtp-775647-0 
> org.apache.cocoon.sitemap.node.AbstractSitemapNode - 
> GenerateNode(src=generators/languages-in-country.xml, 
> type=url).invoke(/generator/languages-in-country/country_id/77/source)
> 2012-03-26 12:02:32,210 DEBUG 4650852@qtp-775647-0 
> org.apache.cocoon.pipeline.AbstractPipeline - Adding component 
> XMLGenerator(hashCode=21679729 
> internalGenerator=URLGenerator(hashCode=7501974 
> source=file:/C:/Users/HuttarL/Documents/work/c3/theParent/e-17-pub/src/main/resources/COB-INF/generators/languages-in-country.xml))

> to pipeline [CachingPipeline(hashCode=3632323 components=[])].
> 2012-03-26 12:02:32,210 DEBUG 4650852@qtp-775647-0 
> org.apache.cocoon.sitemap.node.AbstractSitemapNode - 
> SerializeNode(type=xml).invoke(/generator/languages-in-country/country_id/77/source)
> 2012-03-26 12:02:32,320 DEBUG 4650852@qtp-775647-0 
> org.apache.cocoon.pipeline.AbstractPipeline - Adding component 
> XMLSerializer(hashCode=9852500) to pipeline 
> [CachingPipeline(hashCode=3632323 
> components=[XMLGenerator(hashCode=21679729 
> internalGenerator=URLGenerator(hashCode=7501974 
> source=file:/C:/Users/HuttarL/Documents/work/c3/theParent/e-17-pub/src/main/resources/COB-INF/generators/languages-in-country.xml))])].
> 2012-03-26 12:02:32,321 INFO  4650852@qtp-775647-0 
> org.apache.cocoon.servlet.RequestProcessor - Sitemap execution for 
> /generator/languages-in-country/country_id/77/source took 171.6865 ms.
> 2012-03-26 12:02:32,329 ERROR 4650852@qtp-775647-0 
> 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]
>     at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) 
> ~[na:1.6.0_14]
>     at 
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) 
> ~[na:1.6.0_14]
>     at 
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)

> ~[na:1.6.0_14]
>     at java.lang.reflect.Method.invoke(Method.java:597) ~[na:1.6.0_14]
>     at 
> org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:318)

> [spring-aop-3.1.1.RELEASE.jar:3.1.1.RELEASE]
> ...
>     at 
> org.mortbay.thread.QueuedThreadPool$PoolThread.run(QueuedThreadPool.java:582) 
> [jetty-util-6.1.26.jar:6.1.26]
>
>
>
>>
>> It is really weird since we are talking about
>>
>>  public static boolean isModifiedResponse() {
>>         return (Boolean) collectorDataStore.get(KEY_PIPELINE_EXECUTED);
>>     }
>>
>> So either collectorDataStore is null (what should not since it gets 
>> instanced on start) or the result of the get which points to that the 
>> pipeline-executed infos got lost.
>>
>> I never saw this behavior before let us see what the direct use test 
>> gives.

I need to see this xml to try it on my linux box. I have to admit in my 
team we are all on linux or mac, so I cannot exclude plain windows woos 
but trying that file on my box I could say something.

salu2

-- 
Thorsten Scherler<thorsten.at.apache.org>
codeBusters S.L. - web based systems
<consulting, training and solutions>
http://www.codebusters.es/


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