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https://issues.apache.org/jira/browse/BEANUTILS-294?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12525106
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Niall Pemberton commented on BEANUTILS-294:
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There is a test case for setting a nested mapped property:
http://commons.apache.org/beanutils/xref-test/org/apache/commons/beanutils/PropertyUtilsTestCase.html#2954
So it looks to me like its working OK.
If your initial mapped property [i.e. someMap(x)] returns a null rather than a
Map though this is the behaviour I would expect - and you resolve it by
populating the Map before calling setProperty. If you want your Map's to be
automatically created then you might want to look at using LazyActionForm /
LazyDynaBean.
> BeanUtilsBean.setProperty() does not support nested map
> -------------------------------------------------------
>
> Key: BEANUTILS-294
> URL: https://issues.apache.org/jira/browse/BEANUTILS-294
> Project: Commons BeanUtils
> Issue Type: Bug
> Components: Bean / Property Utils
> Affects Versions: 1.8.0-BETA
> Reporter: Stephen Leung
> Priority: Critical
>
> I tried to call BeanUtilsBean.setProperty() with a DynaActionForm as the
> "bean" and "someMap(x)(y)" as the "name". In BeanUtilsBean.setProperty(),
> after the while loop at line 900, target became "null" and name became =
> "(y)". And consequently IllegalArgumentException is thrown at line 930 when
> setProperty() tried to getPropertyDescriptor() of a null bean. Specifically,
> the following is the stack trace. Could somebody look into it?
> Thanks.
> java.lang.IllegalArgumentException: No bean specified
> at
> org.apache.common.beanutils.PropertyUtilsBean.getPropertyDescriptor(PropertyUtilsBean.java:871)
> at
> org.apache.commons.beanutils.BeanUtilsBean.setProperty(BeanUtilsBean.java:930)
> at
> org.apache.commons.beanutils.BeanUtilsBean.populate(BeanUtilsBean.java:829)
> at
> org.apache.commons.beanutils.BeanUtils.populate(BeanUtilsBean.java:433)
> at org.apache.struts.util.RequestUtils.pouplate(RequestUtils.java:467)
> ......
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