Yes, it is a JPA entity bean proxied by OpenJPA.
It has a list property - the bean is a parent in a parent-child relationship and
this property is the list of children.
This is the incoming HTTP parameter:
portfolio.weightings[0]=123
Despite debugging it I am still not sure what has happened but I do see that
OgnlRuntime looks up the appropriate PropertyAccessor in a map, and gets the
wrong one back (SetPropertyAccessor instead of ListPropertyAccessor).
Is there anything I can do to influence that?
Regards
Adam
Musachy Barroso on 13/02/09 17:10, wrote:
It seems like it is not a list but a proxy to it
"org.apache.openjpa.util.java$util$ArrayList$proxy" which could be the
root of the problem.
musachy
On Fri, Feb 13, 2009 at 12:00 PM, Adam Hardy
<ahardy.str...@cyberspaceroad.com> wrote:
I have a situation where OGNL seems to be misinterpreting the class of the
HTTP parameter property it is setting during the ParameterInterceptor call.
As you can see from the exception message, the object is an ArrayList and
certainly not a Set which OGNL thinks it is. I have double, triple and
quadruple checked that I am not using a Set at this point.
How and where is OGNL deciding that this is a Set? And can I configure it?
The HTTP parameter is 'myParameter[0]' and the List is a generic, assuming
that makes a difference.
java.lang.ClassCastException:
org.apache.openjpa.util.java$util$ArrayList$proxy cannot be cast to
java.util.Set
at ognl.SetPropertyAccessor.getProperty(SetPropertyAccessor.java:46)
at
com.opensymphony.xwork2.ognl.accessor.XWorkCollectionPropertyAccessor.getProperty(XWorkCollectionPropertyAccessor.java:80)
at ognl.OgnlRuntime.getProperty(OgnlRuntime.java:1643)
at ognl.ASTProperty.getValueBody(ASTProperty.java:92)
at ognl.SimpleNode.evaluateGetValueBody(SimpleNode.java:170)
at ognl.SimpleNode.getValue(SimpleNode.java:210)
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