[jbossseam-issues] [JBoss JIRA] Closed: (JBSEAM-4032) Page scope throws exception when setting null value
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https://jira.jboss.org/jira/browse/JBSEAM-4032?page=com.atlassian.jira.pl...
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Norman Richards closed JBSEAM-4032.
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Fix Version/s: 2.1.2.CR1
Resolution: Done
The underlying page context can throw an exception when setting a null value. I've
added a null check. It's possible that throwing a better exception is in order, but
this fix makes the behavior the same as with other contexts that internally convert a set
null into a remove operation.
Page scope throws exception when setting null value
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Key: JBSEAM-4032
URL: https://jira.jboss.org/jira/browse/JBSEAM-4032
Project: Seam
Issue Type: Bug
Components: Core
Affects Versions: 2.1.1.GA
Reporter: Matthew Lieder
Assignee: Norman Richards
Fix For: 2.1.2.CR1
The following code will cause an unhelpful NPE to be thrown by JSF when the factory is
accessed:
@Name("someComponent")
@Scope(ScopeType.PAGE)
public class SomeComponent implements Serializable {
@Factory("someVar")
public String getSomeVar() {
return null;
}
}
While I believe I remember reading that using that particular type of factory method on a
page-scoped component isn't supported (supported by the fact that removing the @Scope
makes it work), the exception should at least be somewhat helpful in debugging the
problem. NPE's with no messages are about as unfriendly as one can get.
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