All Known Subinterfaces:

RelationSupportMBean

All Known Implementing Classes:

RelationSupport

public interface Relation

Since:

1.5

• Method Summary

  All Methods

  Modifier and Type	Method	Description
  RoleResult	getAllRoles ()	Returns all roles present in the relation.
  Map<ObjectName,List<String>>	getReferencedMBeans ()	Retrieves MBeans referenced in the various roles of the relation.
  String	getRelationId ()	Returns relation identifier (used to uniquely identify the relation inside the Relation Service).
  ObjectName	getRelationServiceName ()	Returns ObjectName of the Relation Service handling the relation.
  String	getRelationTypeName ()	Returns name of associated relation type.
  List<ObjectName>	getRole (String roleName)	Retrieves role value for given role name.
  Integer	getRoleCardinality (String roleName)	Returns the number of MBeans currently referenced in the given role.
  RoleResult	getRoles (String[] roleNameArray)	Retrieves values of roles with given names.
  void	handleMBeanUnregistration (ObjectName objectName, String roleName)	Callback used by the Relation Service when a MBean referenced in a role is unregistered.
  RoleList	retrieveAllRoles ()	Returns all roles in the relation without checking read mode.
  void	setRole (Role role)	Sets the given role.
  RoleResult	setRoles (RoleList roleList)	Sets the given roles.

• Method Detail

  • getRole

    List<ObjectName> getRole(String roleName)
     throws IllegalArgumentException,
     RoleNotFoundException,
     RelationServiceNotRegisteredException 

    Retrieves role value for given role name.

    Checks if the role exists and is readable according to the relation type.

    Parameters:

    roleName - name of role

    Returns:

    the ArrayList of ObjectName objects being the role value

    Throws:

    IllegalArgumentException - if null role name

    RoleNotFoundException - if:

    - there is no role with given name

    - the role is not readable.

    RelationServiceNotRegisteredException - if the Relation Service is not registered in the MBean Server

    See Also:

    setRole(javax.management.relation.Role)

  • getRoles

    RoleResult getRoles(String[] roleNameArray)
     throws IllegalArgumentException,
     RelationServiceNotRegisteredException 

    Retrieves values of roles with given names.

    Checks for each role if it exists and is readable according to the relation type.

    Parameters:

    roleNameArray - array of names of roles to be retrieved

    Returns:

    a RoleResult object, including a RoleList (for roles successfully retrieved) and a RoleUnresolvedList (for roles not retrieved).

    Throws:

    IllegalArgumentException - if null role name

    RelationServiceNotRegisteredException - if the Relation Service is not registered in the MBean Server

    See Also:

    setRoles(javax.management.relation.RoleList)

  • getRoleCardinality

    Integer getRoleCardinality(String roleName)
     throws IllegalArgumentException,
     RoleNotFoundException 

    Returns the number of MBeans currently referenced in the given role.

    Parameters:

    roleName - name of role

    Returns:

    the number of currently referenced MBeans in that role

    Throws:

    IllegalArgumentException - if null role name

    RoleNotFoundException - if there is no role with given name

  • getAllRoles

    RoleResult getAllRoles()
     throws RelationServiceNotRegisteredException 

    Returns all roles present in the relation.

    Returns:

    a RoleResult object, including a RoleList (for roles successfully retrieved) and a RoleUnresolvedList (for roles not readable).

    Throws:

    RelationServiceNotRegisteredException - if the Relation Service is not registered in the MBean Server

  • retrieveAllRoles

    RoleList retrieveAllRoles()

    Returns all roles in the relation without checking read mode.

    Returns:

    a RoleList.

  • setRole

    void setRole(Role role)
     throws IllegalArgumentException,
     RoleNotFoundException,
     RelationTypeNotFoundException,
     InvalidRoleValueException,
     RelationServiceNotRegisteredException,
     RelationNotFoundException 

    Sets the given role.

    Will check the role according to its corresponding role definition provided in relation's relation type

    Will send a notification (RelationNotification with type RELATION_BASIC_UPDATE or RELATION_MBEAN_UPDATE, depending if the relation is a MBean or not).

    Parameters:

    role - role to be set (name and new value)

    Throws:

    IllegalArgumentException - if null role

    RoleNotFoundException - if there is no role with the supplied role's name or if the role is not writable (no test on the write access mode performed when initializing the role)

    InvalidRoleValueException - if value provided for role is not valid, i.e.:

    - the number of referenced MBeans in given value is less than expected minimum degree

    - the number of referenced MBeans in provided value exceeds expected maximum degree

    - one referenced MBean in the value is not an Object of the MBean class expected for that role

    - a MBean provided for that role does not exist.

    RelationServiceNotRegisteredException - if the Relation Service is not registered in the MBean Server

    RelationTypeNotFoundException - if the relation type has not been declared in the Relation Service.

    RelationNotFoundException - if the relation has not been added in the Relation Service.

    See Also:

    getRole(java.lang.String)

  • setRoles

    RoleResult setRoles(RoleList roleList)
     throws IllegalArgumentException,
     RelationServiceNotRegisteredException,
     RelationTypeNotFoundException,
     RelationNotFoundException 

    Sets the given roles.

    Will check the role according to its corresponding role definition provided in relation's relation type

    Will send one notification (RelationNotification with type RELATION_BASIC_UPDATE or RELATION_MBEAN_UPDATE, depending if the relation is a MBean or not) per updated role.

    Parameters:

    roleList - list of roles to be set

    Returns:

    a RoleResult object, including a RoleList (for roles successfully set) and a RoleUnresolvedList (for roles not set).

    Throws:

    IllegalArgumentException - if null role list

    RelationServiceNotRegisteredException - if the Relation Service is not registered in the MBean Server

    RelationTypeNotFoundException - if the relation type has not been declared in the Relation Service.

    RelationNotFoundException - if the relation MBean has not been added in the Relation Service.

    See Also:

    getRoles(java.lang.String[])

  • handleMBeanUnregistration

    void handleMBeanUnregistration(ObjectName objectName,
     String roleName)
     throws IllegalArgumentException,
     RoleNotFoundException,
     InvalidRoleValueException,
     RelationServiceNotRegisteredException,
     RelationTypeNotFoundException,
     RelationNotFoundException 

    Callback used by the Relation Service when a MBean referenced in a role is unregistered.

    The Relation Service will call this method to let the relation take action to reflect the impact of such unregistration.

    BEWARE. the user is not expected to call this method.

    Current implementation is to set the role with its current value (list of ObjectNames of referenced MBeans) without the unregistered one.

    Parameters:

    objectName - ObjectName of unregistered MBean

    roleName - name of role where the MBean is referenced

    Throws:

    IllegalArgumentException - if null parameter

    RoleNotFoundException - if role does not exist in the relation or is not writable

    InvalidRoleValueException - if role value does not conform to the associated role info (this will never happen when called from the Relation Service)

    RelationServiceNotRegisteredException - if the Relation Service is not registered in the MBean Server

    RelationTypeNotFoundException - if the relation type has not been declared in the Relation Service.

    RelationNotFoundException - if this method is called for a relation MBean not added in the Relation Service.

  • getReferencedMBeans

    Map<ObjectName,List<String>> getReferencedMBeans()

    Retrieves MBeans referenced in the various roles of the relation.

    Returns:

    a HashMap mapping:

    ObjectName -> ArrayList of String (role names)

  • getRelationTypeName

    String getRelationTypeName()

    Returns name of associated relation type.

    Returns:

    the name of the relation type.

  • getRelationServiceName

    ObjectName getRelationServiceName()

    Returns ObjectName of the Relation Service handling the relation.

    Returns:

    the ObjectName of the Relation Service.

  • getRelationId

    String getRelationId()

    Returns relation identifier (used to uniquely identify the relation inside the Relation Service).

    Returns:

    the relation id.