[Building Sakai] ClassCastException implementing CourseGradesToSpreadsheetConverter

Gross,Christopher ufchrisg at ufl.edu
Wed Aug 17 07:12:12 PDT 2011


The jars are there (the converters appear in tomcat/components/).
Besides, a missing jar would likely give me some problems when tomcat is
starting up and/or result in a bean failing to initialize.

Thanks!

-Chris

On 8/17/11 4:26 AM, "DAVID ROLDAN MARTINEZ" <darolmar at upvnet.upv.es> wrote:

>I suggest checking if you have all the *.jar you need available.
>
>Hope this helps.
>
>David
>________________________________________
>De: sakai-dev-bounces at collab.sakaiproject.org
>[sakai-dev-bounces at collab.sakaiproject.org] En nombre de
>Gross,Christopher [ufchrisg at ufl.edu]
>Enviado el: martes, 16 de agosto de 2011 22:54
>Para: sakai-dev at collab.sakaiproject.org
>Asunto: [Building Sakai] ClassCastException implementing
>CourseGradesToSpreadsheetConverter
>
>Hello!
>
>We are attempting to create our own implementation of the
>CourseGradesToSpreadsheetConverter interface (gradebook service), however
>we are receiving a ClassCastException when attempting to export course
>grades from the gradebook tool. To ensure this was not a problem in our
>code we set gradebook.coursegrades.converter to
>"org.sakaiproject.gradebooksample.CourseGradesToSpreadsheetConverterSample
>"
> in sakai.properties, which is the sample that is included in the
>gradebook tool's source. The result is that both implementations are
>causing the same ClassCastException when a user attempts to export the
>course grades in the gradebook.
>
>This setup is using gradebook 2.8.x and edu-services 1.1.x
>
>A small snippet of the output is below.
>
>I am hoping that someone may see something that I am not or will confirm
>that this is something that needs to be submitted to the JIRA.
>
>Thanks!
>
>----
>
>2011-08-16 16:28:05.634 [ERROR]
>org.apache.catalina.core.ContainerBase.[Catalina].[localhost].[/sakai-grad
>e
>book-tool].[sakai.gradebook.tool]:691 - Servlet.service() for servlet
>sakai.gradebook.tool threw exception
>java.lang.ClassCastException:
>org.sakaiproject.gradebooksample.CourseGradesToSpreadsheetConverterSample
>cannot be cast to
>org.sakaiproject.tool.gradebook.CourseGradesToSpreadsheetConverter
>        at
>org.sakaiproject.tool.gradebook.ui.CourseGradeDetailsBean.getSpreadsheetDa
>t
>a(CourseGradeDetailsBean.java:322)
>        at
>org.sakaiproject.tool.gradebook.ui.CourseGradeDetailsBean.exportCsv(Course
>G
>radeDetailsBean.java:296)
>...
>
>
>--
>
>Christopher Gross
>University of Florida
>
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