[jbossseam-issues] [JBoss JIRA] Updated: (JBSEAM-3836) NPE in parameter conversion after rule redirect: valueExpression.getType returns null!

[ https://jira.jboss.org/jira/browse/JBSEAM-3836?page=com.atlassian.jira.pl... ] Francisco Jose Peredo Noguez updated JBSEAM-3836: ------------------------------------------------- Summary: NPE in parameter conversion after rule redirect: valueExpression.getType returns null! (was: NPE in parameter conversion after rule redirect: String to Long?) Description: I am getting this WARNING in my logs: WARN org.jboss.seam.navigation.Param - could not create converter for: categoriaBienCveCategoria java.lang.NullPointerException at org.jboss.seam.jsf.SeamApplication$ConverterLocator.locateConverter(SeamApplication.java:166) [jboss-seam.jar:2.1.0.SP1] (The full stacktrace is available in the referenced forum thread) This happens when I hit a navigation rule like this: <rule if-outcome="persisted" if="#{not empty categoriaBienCveCategoriaFor}"> <end-conversation/> <redirect view-id="#{categoriaBienFrom}"> <param name="categoriaBienCveCategoria" value="#{categoriaBienCveCategoriaFor}"/> <param name="categoriaBienFrom" value="/Crud/CategoriaBien/CategoriaBienList.xhtml"/> </redirect> </rule> As a side effect the categoriaBienCveCategoria is not set with the value in #{categoriaBienCveCategoriaFor}, and that makes my validation rule useless. But I found a weird workaround, if I change: <param name="categoriaBienCveCategoria" value="#{categoriaBienCveCategoriaFor}"/> to <param name="categoriaBienCveCategoria" value="#{categoriaBienCveCategoriaFor+0}"/> Everything works fine (and the WARN dissapears) I think this is a bug in the way Seam 2.1.0SP1 is dealing with conversions. In org.jboss.seam.navigation.Param.getConverter() the call valueExpression.getType() is returning null for #{categoriaBienCveCategoriaFor} was: I am getting this WARNING in my logs: WARN org.jboss.seam.navigation.Param - could not create converter for: categoriaBienCveCategoria java.lang.NullPointerException at org.jboss.seam.jsf.SeamApplication$ConverterLocator.locateConverter(SeamApplication.java:166) [jboss-seam.jar:2.1.0.SP1] (The full stacktrace is available in the referenced forum thread) This happens when I hit a navigation rule like this: <rule if-outcome="persisted" if="#{not empty categoriaBienCveCategoriaFor}"> <end-conversation/> <redirect view-id="#{categoriaBienFrom}"> <param name="categoriaBienCveCategoria" value="#{categoriaBienCveCategoriaFor}"/> <param name="categoriaBienFrom" value="/Crud/CategoriaBien/CategoriaBienList.xhtml"/> </redirect> </rule> As a side effect the categoriaBienCveCategoria is not set with the value in #{categoriaBienCveCategoriaFor}, and that makes my validation rule useless. But I found a weird workaround, if I change: <param name="categoriaBienCveCategoria" value="#{categoriaBienCveCategoriaFor}"/> to <param name="categoriaBienCveCategoria" value="#{categoriaBienCveCategoriaFor+0}"/> Everything works fine (and the WARN dissapears) I think this is a bug in the way Seam 2.1.0SP1 is dealing with conversions, I think that maybe seam is failing to convert categoriaBienCveCategoriaFor from String to Long, to match the setter of categoriaBienCveCategoria. -- This message is automatically generated by JIRA. - If you think it was sent incorrectly contact one of the administrators: https://jira.jboss.org/jira/secure/Administrators.jspa - For more information on JIRA, see: http://www.atlassian.com/software/jira