What's wrong with the following code? It runs, but without any effect.
/**
* @jmx.managed-operation
* impact="ACTION"
*/
public void setReadOnly()
throws Exception
{
ModelMBeanInfo info = (ModelMbeanInfo) server.getMBeanInfo(name);
// Direct invocation of getModelMbeanInfo() returns null!
MBeanAttributeInfo[] infos = info.getAttributes();
for (int i = 0; i < infos.length; ++i)
{
if (infos[i].isWritable())
{
log.debug("Setting field read-only: " + infos[i].getName());
infos[i] = new ModelMBeanAttributeInfo(
infos[i].getName(),
infos[i].getType(),
infos[i].getDescription(),
infos[i].isReadable(),
false,
infos[i].isIs());
}
}
// Can't do setModelMBeanInfo(info), NullPointerException!
}
--
Eric Jain
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