Invalid recursion selector value 'autoComplete'

[ronald_ploeger]

Hi,

I registered a Sling-Servlet to generate JSON when a resource of the resource type "my/resource/type" is called with the selector "autoComplete" and the extension "json":

@Service @Component() @Properties(value = { @Property(name = "sling.servlet.resourceTypes", value = "my/resource/type"), @Property(name = "sling.servlet.selectors", value = { "autoComplete" }), @Property(name = "sling.servlet.extensions", value = { "json" }), @Property(name = "sling.servlet.methods", value = "GET") })

When I call: http://localhost:4502/content/xyz/global/corporate/en/search.autoComplete.json?searchText=ro        

(which resource is of the correct resource type) I get the following exception:

Invalid recursion selector value 'autoComplete' Cannot serve request to /content/xyz/global/corporate/en/search.autoComplete.json in org.apache.sling.servlets.get.DefaultGetServlet 0 (2015-01-07 17:14:13) TIMER_START{Request Processing} 0 (2015-01-07 17:14:13) COMMENT timer_end format is {<elapsed msec>,<timer name>} <optional message> 0 (2015-01-07 17:14:13) LOG Method=GET, PathInfo=/content/xyz/global/corporate/en/search.autoComplete.json 0 (2015-01-07 17:14:13) TIMER_START{ResourceResolution} 0 (2015-01-07 17:14:13) TIMER_END{0,ResourceResolution} URI=/content/xyz/global/corporate/en/search.autoComplete.json resolves to Resource=JcrNodeResource, type=cq:Page, superType=null, path=/content/xyz/global/corporate/en/search 0 (2015-01-07 17:14:13) LOG Resource Path Info: SlingRequestPathInfo: path='/content/xyz/global/corporate/en/search', selectorString='autoComplete', extension='json', suffix='null' 0 (2015-01-07 17:14:13) TIMER_START{ServletResolution} 0 (2015-01-07 17:14:13) TIMER_START{resolveServlet(JcrNodeResource, type=cq:Page, superType=null, path=/content/xyz/global/corporate/en/search)} 0 (2015-01-07 17:14:13) TIMER_END{0,resolveServlet(JcrNodeResource, type=cq:Page, superType=null, path=/content/xyz/global/corporate/en/search)} Using servlet org.apache.sling.servlets.get.DefaultGetServlet 0 (2015-01-07 17:14:13) TIMER_END{0,ServletResolution} URI=/content/xyz/global/corporate/en/search.autoComplete.json handled by Servlet=org.apache.sling.servlets.get.DefaultGetServlet 0 (2015-01-07 17:14:13) LOG Applying Requestfilters 0 (2015-01-07 17:14:13) LOG Calling filter: com.adobe.granite.resourceresolverhelper.impl.ResourceResolverHelperImpl 0 (2015-01-07 17:14:13) LOG Calling filter: org.apache.sling.bgservlets.impl.BackgroundServletStarterFilter 0 (2015-01-07 17:14:13) LOG Calling filter: com.adobe.cq.dam.s7imaging.impl.auth.MemoryTokenAuthHandler 0 (2015-01-07 17:14:13) LOG Calling filter: org.apache.sling.i18n.impl.I18NFilter 0 (2015-01-07 17:14:13) LOG Calling filter: com.adobe.granite.httpcache.impl.InnerCacheFilter 0 (2015-01-07 17:14:13) LOG Calling filter: org.apache.sling.rewriter.impl.RewriterFilter 0 (2015-01-07 17:14:13) LOG Calling filter: com.day.cq.wcm.designimporter.CanvasPageDeleteRequestFilter 0 (2015-01-07 17:14:13) LOG Calling filter: com.adobe.cq.history.impl.HistoryRequestFilter 0 (2015-01-07 17:14:13) LOG Calling filter: com.day.cq.wcm.core.impl.WCMRequestFilter 0 (2015-01-07 17:14:13) LOG Calling filter: com.adobe.granite.optout.impl.OptOutFilter 0 (2015-01-07 17:14:13) LOG Calling filter: com.day.cq.theme.impl.ThemeResolverFilter 0 (2015-01-07 17:14:13) LOG Calling filter: com.day.cq.wcm.foundation.forms.impl.FormsHandlingServlet 0 (2015-01-07 17:14:13) LOG Calling filter: com.adobe.cq.social.commons.cors.CORSAuthenticationFilter 0 (2015-01-07 17:14:13) LOG Calling filter: org.apache.sling.engine.impl.debug.RequestProgressTrackerLogFilter 0 (2015-01-07 17:14:13) LOG Calling filter: com.day.cq.wcm.mobile.core.impl.redirect.RedirectFilter 1 (2015-01-07 17:14:13) LOG RedirectFilter did not redirect (request extension does not match) 1 (2015-01-07 17:14:13) LOG Calling filter: com.day.cq.wcm.core.impl.warp.TimeWarpFilter 1 (2015-01-07 17:14:13) LOG Calling filter: com.day.cq.wcm.core.impl.AuthoringUIModeServiceImpl 1 (2015-01-07 17:14:13) LOG Calling filter: com.adobe.cq.social.commons.security.SaferSlingPostServlet 1 (2015-01-07 17:14:13) LOG Calling filter: com.adobe.granite.requests.logging.impl.RequestLoggerImpl 1 (2015-01-07 17:14:13) LOG Applying Componentfilters 1 (2015-01-07 17:14:13) LOG Calling filter: com.day.cq.personalization.impl.TargetComponentFilter 1 (2015-01-07 17:14:13) LOG Calling filter: com.day.cq.wcm.core.impl.WCMComponentFilter 1 (2015-01-07 17:14:13) LOG Calling filter: com.day.cq.wcm.core.impl.WCMDebugFilter 1 (2015-01-07 17:14:13) TIMER_START{org.apache.sling.servlets.get.DefaultGetServlet#0} 1 (2015-01-07 17:14:13) LOG Using org.apache.sling.servlets.get.impl.helpers.JsonRendererServlet to render for extension=json 1 (2015-01-07 17:14:13) LOG Applying Error filters 1 (2015-01-07 17:14:13) LOG Calling filter: org.apache.sling.rewriter.impl.RewriterFilter 1 (2015-01-07 17:14:13) TIMER_START{handleError:status=400} 3 (2015-01-07 17:14:13) TIMER_END{2,handleError:status=400} Using handler /libs/sling/servlet/errorhandler/default.jsp 8 (2015-01-07 17:14:13) LOG Found processor for post processing ProcessorConfiguration: {contentTypes=[text/html],order=-1, active=true, valid=true, processErrorResponse=true, pipeline=(generator=Config(type=htmlparser, config={}), transformers=(Config(type=linkchecker, config={}), Config(type=mobile, config=JcrPropertyMap [node=Node[NodeDelegate{tree=/libs/cq/config/rewriter/default/transformer-mobile: { jcr:primaryType = nt:unstructured, component-optional = true}}], values={jcr:primaryType=nt:unstructured, component-optional=true}]), Config(type=mobiledebug, config=JcrPropertyMap [node=Node[NodeDelegate{tree=/libs/cq/config/rewriter/default/transformer-mobiledebug: { jcr:primaryType = nt:unstructured, component-optional = true}}], values={jcr:primaryType=nt:unstructured, component-optional=true}]), Config(type=contentsync, config=JcrPropertyMap [node=Node[NodeDelegate{tree=/libs/cq/config/rewriter/default/transformer-contentsync: { jcr:primaryType = nt:unstructured, component-optional = true}}], values={jcr:primaryType=nt:unstructured, component-optional=true}]), serializer=Config(type=htmlwriter, config={}))} 8 (2015-01-07 17:14:13) TIMER_END{8,Request Processing} Dumping SlingRequestProgressTracker Entries 11 (2015-01-07 17:14:13) TIMER_END{10,handleError:status=400} Error handler finished 11 (2015-01-07 17:14:13) TIMER_END{10,org.apache.sling.servlets.get.DefaultGetServlet#0} 11 (2015-01-07 17:14:13) TIMER_END{11,Request Processing} Request Processing

For some reason it seems that my "AutoCompleteControllerServlet" is never called. The Problem seems to be the "json" extension. As soon as I specify this the DefaultGetServlet seems to handle the request.

When I specify "html" as the extension my Servlet is called but the following HTML comment is appended to the JSON response generated in my Servlet, which renders the JSON invalid.

<!--cq{"decorated":false,"type":"xyz/pages/search","path":"/content/xyz/global/corporate/en/search/jcr:content","selectors":"autoComplete","servlet":"AutoCompleteControllerServlet","totalTime":13,"selfTime":13}-->

1. Why isn't my servlet called when I specify "json" as extension?

2. Is there a way to tell CQ not to add the HTML comment when I specify "html" as extension?

To use the json extension would be my prefered solution.

Any hint to get regarding this problem is appreciated,

Ronald

[Sham_HC · Accepted solution]

HI Ronald,

Have [1] handy always.

  /content/xyz/global/corporate/en/search is of type page your servlet never pickup.  If needs to pickedup you need to write proxy.jsp   Instead using /content/xyz/global/corporate/en/search/jcr:content/<component node name which of type  my/resource/type>.autoComplete.json?searchText=ro will work.

[1]  http://dev.day.com/content/ddc/blog/2008/07/cheatsheet.html

Thanks,

Sham

tweet: adobe_sham

[ronald_ploeger]

Hi Sham,

thanks a million for your answer and also for reminding me of the Sling Script Resolution Cheetsheet.

You are right: The resource "/content/xyz/global/corporate/en/search" does not have a resource type but only has the "jcr:primaryType" of "cq:page" whereas "/content/xyz/global/corporate/en/search/jcr:content" is of the resource type "my/resource/type".

Therefore when I call "http://localhost:4502/content/xyz/global/corporate/en/search/jcr:content.autoComplete.json?searchTex..." everything works like a charm.

Thanks again,

Ronald