StackOverflowError with <a4j:actionParam> RF 3.3.1

[julienc]

Hello guys,

If i put an <A4j:actionParam actionListener="#{bean.mylistener}"> or
<A4j:actionParam value="#{bean.myvalue}" assignTo="#{bean.ToValue}"> or something like that.

I've an StackOverflowError

Caused by: java.lang.StackOverflowError
 at java.lang.String.indexOf(String.java:1522)
 at org.apache.commons.beanutils.PropertyUtilsBean.getPropertyDescriptor(PropertyUtilsBean.java:786)
 at org.apache.commons.beanutils.PropertyUtilsBean.getSimpleProperty(PropertyUtilsBean.java:1119)
 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:165)
 at org.ajax4jsf.javascript.ScriptUtils.toScript(ScriptUtils.java:84)
 at org.ajax4jsf.javascript.ScriptUtils.toScript(ScriptUtils.java:165)
 at org.ajax4jsf.javascript.ScriptUtils.toScript(ScriptUtils.java:165)
 at org.ajax4jsf.javascript.ScriptUtils.toScript(ScriptUtils.java:84)
 at org.ajax4jsf.javascript.ScriptUtils.toScript(ScriptUtils.java:165)
 at org.ajax4jsf.javascript.ScriptUtils.toScript(ScriptUtils.java:165)
 at org.ajax4jsf.javascript.ScriptUtils.toScript(ScriptUtils.java:84)
 at org.ajax4jsf.javascript.ScriptUtils.toScript(ScriptUtils.java:165)
 at org.ajax4jsf.javascript.ScriptUtils.toScript(ScriptUtils.java:165)
 at org.ajax4jsf.javascript.ScriptUtils.toScript(ScriptUtils.java:84)
 at org.ajax4jsf.javascript.ScriptUtils.toScript(ScriptUtils.java:165)

Any ideas ?

Thanks

[jdsuboy]

do you have any circular references in your objects?

Objects can get serialized as well as their properties, so if you have an object with a property that has a reference to an object that refers back to your property (phew), then you will get a stack overflow because it will try and serialize your property, which will then serialize the object that refers back to your object, which will then serialize your property, and round and round we go.

I had this same problem with data in my treeNode. It had a property that referred to its containing treeNode and I would get stack overflows.

[julienc]

Yes, with @oneTomany and @manyToone ...

[julienc]

How do you solve it ? without delete circular references ?

[nbelaevski]

You can define converter for a4j:actionparam.

[julienc]

can you more explain plz ? A converter to do what ?

[nbelaevski]

To convert #{bean.myvalue} to String back and forth. a4j:actionparam encodes value to the client and then receives it as request parameter value.

[julienc]

Ok thank you.

Finally. i use <A4j:actionParam actionListener="#{bean.mylistener}"> for the actionListener with value="" and assignTO="#{bean.tmp}"

and <f:setPropertyActionListener value="#{value}"
target="#{bean.valueSelected}" />