Add an MBean that an application can register to change the state of Derby's
JMX management
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Key: DERBY-3424
URL: https://issues.apache.org/jira/browse/DERBY-3424
Project: Derby
Issue Type: New Feature
Reporter: Daniel John Debrunner
Assignee: Daniel John Debrunner
Priority: Minor
JMX in Derby was originally proposed as a mechanism to configure Derby
replacing or enhancing the system properties which tend to be static in nature.
Thus it is somewhat ironic that jmx is enabled with a static system property
derby.system.jmx.
I propose to add a public mbean that allows the state Derby's JMX management to
be changed. This bean is not automatically registered by Derby if
derby.system.jmx is false, but instead can be registered by an application. I
believe this could occur at any time so that JMX could be enabled on a running
application, possibly by a remote client.
This standard Mbean (o.a.d.jmx.Management & ManagementMBean) would have these
operations & attribute:
public boolean isManagementActive();
public void startManagement();
public void stopManagement();
If Derby is not booted within the jvm then the operations would be no-ops.
If derby.system.jmx is true then Derby will itself register an mbean that
implements ManagementMBean to allow dynamic control of the visibility of
Derby's mbeans.
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