StackOverflow error

[demetrio812]

Hi,
I have a seam-gen (Seam 2.1.1) generated project, when I use the a:actionparam tag instead of f:setPropertyListener it gives me the java.lang.NoClassDefFoundError: org/apache/commons/beanutils/PropertyUtils exception, so I moved the commons-beanutil.jar into the EAR lib and it gives me another error:

java.lang.StackOverflowError
 at java.lang.reflect.InvocationTargetException.<init>(InvocationTargetException.java:54)
 at sun.reflect.GeneratedMethodAccessor142.invoke(Unknown Source)
 at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
 at java.lang.reflect.Method.invoke(Method.java:585)
 at org.apache.commons.beanutils.PropertyUtilsBean.invokeMethod(PropertyUtilsBean.java:1773)
 at org.apache.commons.beanutils.PropertyUtilsBean.getSimpleProperty(PropertyUtilsBean.java:1132)
 at org.apache.commons.beanutils.PropertyUtilsBean.getNestedProperty(PropertyUtilsBean.java:686)
 at org.apache.commons.beanutils.PropertyUtilsBean.getProperty(PropertyUtilsBean.java:715)
 at org.apache.commons.beanutils.PropertyUtils.getProperty(PropertyUtils.java:290)
 at org.ajax4jsf.javascript.ScriptUtils.toScript(ScriptUtils.java:141)
 at org.ajax4jsf.javascript.ScriptUtils.toScript(ScriptUtils.java:86)
 ...

In particular I changed this code:

 <a:commandButton value="view">
 <f:setPropertyActionListener value="#{contact}"
 target="#{contactBean.selectedContact}"/>
 <f:setPropertyActionListener value="#{null}"
 target="#{contactBean.contactFieldsList}"/>
 <f:setPropertyActionListener value="#{null}"
 target="#{contactBean.contactAddressesList}"/>
 <f:setPropertyActionListener value="#{false}"
 target="#{contactBean.selectedContactEditing}"/>
 </a:commandButton>

into this:

 <a:commandButton value="view">
 <a:actionparam value="#{contact}"
 assignTo="#{contactBean.selectedContact}"/>
 <a:actionparam value="#{null}"
 assignTo="#{contactBean.contactFieldsList}"/>
 <a:actionparam value="#{null}"
 assignTo="#{contactBean.contactAddressesList}"/>
 <a:actionparam value="#{false}"
 assignTo="#{contactBean.selectedContactEditing}"/>
 </a:commandButton>

and I ran into the problem.

I think it's related to the issue: https://jira.jboss.org/jira/browse/RF-5004

Demetrio

[nbelaevski]

Demetrio,

As ScriptUtils.toScript() converts Java objects to JSON, it needs them to be tree (no cycles) and not graph. Usually, such exception is raised when object being transformed is referencing itself. Is it your case?