M B E A N C O N F I G U R A T I O N A N D D E P E N D E N C Y M A N A G E M E N T P A G E 1 0 7
Depends attributes, which do not need to correspond to an mbean attribute. If it
corresponds to an mbean attribute, that attribute type must be ObjectName and the
name must be specified with optional attribute name. For convenience you may
specify an ObjectName or include the complete mbean configuration as a nested
element.
Depends list attributes, which contain a list of ObjectNames or mbeans:
optional attribute name="blah"
element>jboss.jca:service=something. Again,
you can supply either an ObjectName or a complete mbean configuration. The mbean
attribute type should be "List".
Service Lifecycle.
Generally mbeans should implement org.jboss.system.Service or extend
org.jboss.system.ServiceMBeanSupport to participate in the JBoss lifecycle management.
This consists of 6 steps:
20.
Object creation and configuration. Using the xml file format just discussed, the
mbean is instantiated on the mbean server and configured with the specified
attribute values. It is not yet ready for use.
21.
Create step: JBoss calls the create method (filtered to createService in
ServiceMBeanSupport). In this step, your mbean should set up its internal
configuration to expose some representation of everything it will make available.
However, it should not refer to or use anything outside itself (such as mbeans
specified in depends elements or jndiname references).
22.
Start step. Here your mbean can look into the outside world and use services of
mbeans it has references to. After this step, the mbean is ready for use.
23.
Stop step. This should be the reverse of the start step. It should not have state
information imported from other mbeans after this step. The mbean is no longer
usable.
24.
Destroy step. This should reverse the Create step.
25.
Unregister. The mbean is removed from the mbean server.
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