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https://issues.apache.org/jira/browse/CXF-2908?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Sergey Beryozkin resolved CXF-2908.
-----------------------------------
Assignee: Sergey Beryozkin
Fix Version/s: 2.3
2.2.10
Resolution: Fixed
> Using a Java enum type in a JAX-RS matrix parameter results in a
> StackOverflowError when generating the WADL
> ------------------------------------------------------------------------------------------------------------
>
> Key: CXF-2908
> URL: https://issues.apache.org/jira/browse/CXF-2908
> Project: CXF
> Issue Type: Bug
> Components: JAX-RS
> Affects Versions: 2.2.9
> Environment: Windows XP, Tomcat 6.0.20, JDK 1.6.0_19
> Reporter: Greg Katz
> Assignee: Sergey Beryozkin
> Fix For: 2.3, 2.2.10
>
>
> *Repro steps:*
> 1. Create a JAX-RS endpoint method that uses an object with an enum-typed
> property as a matrix parameter.
> 2. Hit the WADL URI for the endpoint's path (or "above" the endpoint's path).
> Something like {{http://host:port/rest?_wadl}}, in other words.
> *Result:*
> The {{org.apache.cxf.jaxrs.model.wadl.WadlGenerator}} throws a
> {{StackOverflowError}}.
> {noformat}
> ERROR 2010-07-23 09:45:09.417 http-8080-1> Servlet.service() for servlet
> CXFServlet threw exception
> java.lang.StackOverflowError
> at java.lang.Class.privateGetPublicMethods(Class.java:2536)
> at java.lang.Class.getMethods(Class.java:1410)
> at
> org.apache.cxf.jaxrs.utils.InjectionUtils.getParametersFromBeanClass(InjectionUtils.java:853)
> at
> org.apache.cxf.jaxrs.model.wadl.WadlGenerator.doWriteBeanParam(WadlGenerator.java:447)
> at
> org.apache.cxf.jaxrs.model.wadl.WadlGenerator.doWriteBeanParam(WadlGenerator.java:456)
> at
> org.apache.cxf.jaxrs.model.wadl.WadlGenerator.doWriteBeanParam(WadlGenerator.java:456)
> at
> org.apache.cxf.jaxrs.model.wadl.WadlGenerator.doWriteBeanParam(WadlGenerator.java:456)
> at
> org.apache.cxf.jaxrs.model.wadl.WadlGenerator.doWriteBeanParam(WadlGenerator.java:456)
> ...
> {noformat}
> *Example code:*
> {code:java}
> @Path("/whatever")
> @Produces("application/json")
> public interface WhateverEndpoint {
>
> @GET
> @Path("/")
> public Whatever[] getWhatevers(@MatrixParam("")WhateverSearchCriteria
> criteria);
> }
> @XmlRootElement
> public class WhateverSearchCriteria {
> private EnumType enumValue;
> public EnumType getEnumValue() {
> return enumValue;
> }
> }
> @XmlRootElement
> public enum EnumType {
> Value1,
> Value2;
> }
> {code}
> *Observations:*
> When I commented out the enum-typed property, the {{StackOverflowError}} went
> away.
> I stepped through the {{WadlGenerator}} in the debugger and noticed something
> about {{getParametersFromBeanClass}} that might be the source of the problem.
> {{getParametersFromBeanClass}} gets all of the no-arg methods that begin with
> {{get}} and then discards "getClass". However, it doesn't discard the
> {{Enum}} class's {{getDeclaringClass}} method. This method returns an object
> of type {{java.lang.Class}}. In the debugger, I saw that all of the remaining
> {{doWriteBeanParam}} stack frames after the one whose {{type}} argument was
> the enum type had a {{type}} argument of {{java.lang.Class}}.
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