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Posted to commits@wicket.apache.org by "Daniel Stoch (Jira)" <ji...@apache.org> on 2025/05/28 14:29:00 UTC
[jira] [Updated] (WICKET-7155) Cannot clear Application metadata - NullPointerException
[ https://issues.apache.org/jira/browse/WICKET-7155?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Daniel Stoch updated WICKET-7155:
---------------------------------
Description:
After change in WICKET-7002 now it is not possible to clear value stored in Application under MetaDataKey.
For now the call:
{code}
application.setMetaData(KEY, null)
{code}
raises an exception:
{noformat}
java.lang.NullPointerException
at java.base/java.util.concurrent.ConcurrentHashMap.putVal(ConcurrentHashMap.java:1011)
at java.base/java.util.concurrent.ConcurrentHashMap.put(ConcurrentHashMap.java:1006)
at org.apache.wicket.Application.setMetaData(Application.java:515)
...
{noformat}
Maybe this method should be implemented like:
{code}
public final <T> Application setMetaData(final MetaDataKey<T> key, final T object)
{
if (object != null)
metaData.put(key, object);
else
metaData.remove(key);
return this;
}
{code}
was:
After change in WICKET-7002 now it is not possible to clear value stored in Application under MetaDataKey.
For now the call:
{code}
application.setMetaData(KEY, null)
{code}
raises an exception:
{noformat}
java.lang.NullPointerException
at java.base/java.util.concurrent.ConcurrentHashMap.putVal(ConcurrentHashMap.java:1011)
at java.base/java.util.concurrent.ConcurrentHashMap.put(ConcurrentHashMap.java:1006)
at org.apache.wicket.Application.setMetaData(Application.java:515)
...
{noformat}
> Cannot clear Application metadata - NullPointerException
> --------------------------------------------------------
>
> Key: WICKET-7155
> URL: https://issues.apache.org/jira/browse/WICKET-7155
> Project: Wicket
> Issue Type: Bug
> Components: wicket-core
> Affects Versions: 9.21.0
> Reporter: Daniel Stoch
> Priority: Major
>
> After change in WICKET-7002 now it is not possible to clear value stored in Application under MetaDataKey.
> For now the call:
> {code}
> application.setMetaData(KEY, null)
> {code}
> raises an exception:
> {noformat}
> java.lang.NullPointerException
> at java.base/java.util.concurrent.ConcurrentHashMap.putVal(ConcurrentHashMap.java:1011)
> at java.base/java.util.concurrent.ConcurrentHashMap.put(ConcurrentHashMap.java:1006)
> at org.apache.wicket.Application.setMetaData(Application.java:515)
> ...
> {noformat}
> Maybe this method should be implemented like:
> {code}
> public final <T> Application setMetaData(final MetaDataKey<T> key, final T object)
> {
> if (object != null)
> metaData.put(key, object);
> else
> metaData.remove(key);
> return this;
> }
> {code}
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