Working with the relation service - JMX in Action - page 267

{
roleInfoArray[0]= new RoleInfo("VoiceProcessor",
"jmxbook.ch11.PhoneCard",
true,
true,
1,
10,
"The Role for Phone Card");
roleInfoArray[1] = new RoleInfo("FaxProcessor",
"jmxbook.ch11.FaxCard",
true,
true,
1,
1,
"The Role for Fax Card");
roleInfoArray[2] = new RoleInfo("CallRouter",
"jmxbook.ch11.RoutingTable",
true,
true,
1,
1,
"The Role for Routing Table");
}
catch(Exception e)
{
System.out.println(
"Error Creating the Relation Service MBean");
e.printStackTrace();
}
return roleInfoArray;
}
The role information array describes the roles that will form the relation. Each
RoleInfo instance contains the role name and the MBean class name that can act
as this type of role. In addition, it describes whether the role is readable and
writeable (the two boolean values).
It also includes the minDegree and maxDegree values that describe the multi-
plicity of this role. The minDegree value ( 1 in the case of the VoiceProcessor role)
indicates the minimum number of MBeans that can exist for this role. The
maxDegree value ( 10 in the case of the VoiceProcessor role) indicates the maxi-
mum number of MBeans that can exist for this role. The last parameter to the
constructor is the description of the role. With the RoleInfo objects in hand, you
can create the RelationType object.