[ http://issues.apache.org/struts/browse/WW-1495?page=comments#action_38639 ] Vitor Souza commented on WW-1495: ---------------------------------
I tried adding these comments to the attachment, but for some reason it didn't work. So the purpose of this comment is to present the attachments: * OgnlIssue.war: packaged Web Application that demonstrates the issue. After deploying, assuming the server is at localhost:8080, open the URL http://localhost:8080/OgnlIssue/manageEmployee/home.action. Select some checkboxes and click Delete to get the ClassCastException. * OgnlIssue.zip: the source code of the application. * OgnlRuntime.java: source code of class ognl.OgnlRuntime taken from OGNL 2.6.9. It is hacked to circumvent the ClassCastException. The changes are described here: http://forums.opensymphony.com/thread.jspa?threadID=34624&tstart=0 > Some actions that use Generics make OGNL throw ClassCastException > ----------------------------------------------------------------- > > Key: WW-1495 > URL: http://issues.apache.org/struts/browse/WW-1495 > Project: Struts 2 > Issue Type: Bug > Components: Actions, Expression Language > Affects Versions: 2.0.1 > Environment: Kubuntu Linux 6.06 and 6.10 running Eclipse 3.2 with Web > Tools with an Apache Tomcat 5.5 integrated into the IDE. > Reporter: Vitor Souza > Attachments: OgnlIssue.war, OgnlIssue.zip, OgnlRuntime.java > > > When the action class extends a class that uses generics (e.g. public class > ManageEmployeeAction extends CrudAction<Employee, Long> { }) and data is sent > from the web page (using Struts Forms built by the tag library) to be set in > a property from the class that is inherited from the superclass and defined > as generic (e.g., protected I[] ids;), OGNL cannot determine the type of the > property, falls back to String[] and throws a ClassCastException. > This issue has been further discussed in the forum: > http://forums.opensymphony.com/thread.jspa?threadID=48752. Attachments are > provided to illustrate the issue and propose a starting point for the fix. > However, it should NOT be considered a patch, since the creator of this > "hack" doesn't have enough knowledge of OGNL and Generics to assure its > general correctness. -- This message is automatically generated by JIRA. - If you think it was sent incorrectly contact one of the administrators: http://issues.apache.org/struts/secure/Administrators.jspa - For more information on JIRA, see: http://www.atlassian.com/software/jira
