Java Module java.management Package javax.management.relation Class RoleInfo（JDK11）

Field Detail

• ROLE_CARDINALITY_INFINITY

  public static final int ROLE_CARDINALITY_INFINITY

  To specify an unlimited cardinality.

  See Also:

  Constant Field Values

Constructor Detail

• RoleInfo

  public RoleInfo​(String roleName,
                  String mbeanClassName,
                  boolean read,
                  boolean write,
                  int min,
                  int max,
                  String descr)
           throws IllegalArgumentException,
                  InvalidRoleInfoException,
                  ClassNotFoundException,
                  NotCompliantMBeanException

  Constructor.

  Parameters:

  roleName - name of the role.

  mbeanClassName - name of the class of MBean(s) expected to be referenced in corresponding role. If an MBean M is in this role, then the MBean server must return true for isInstanceOf(M, mbeanClassName).

  read - flag to indicate if the corresponding role can be read

  write - flag to indicate if the corresponding role can be set

  min - minimum degree for role, i.e. minimum number of MBeans to provide in corresponding role Must be less than or equal to max. (ROLE_CARDINALITY_INFINITY for unlimited)

  max - maximum degree for role, i.e. maximum number of MBeans to provide in corresponding role Must be greater than or equal to min (ROLE_CARDINALITY_INFINITY for unlimited)

  descr - description of the role (can be null)

  Throws:

  IllegalArgumentException - if null parameter

  InvalidRoleInfoException - if the minimum degree is greater than the maximum degree.

  ClassNotFoundException - As of JMX 1.2, this exception can no longer be thrown. It is retained in the declaration of this class for compatibility with existing code.

  NotCompliantMBeanException - if the class mbeanClassName is not a MBean class.

• RoleInfo

  public RoleInfo​(String roleName,
                  String mbeanClassName,
                  boolean read,
                  boolean write)
           throws IllegalArgumentException,
                  ClassNotFoundException,
                  NotCompliantMBeanException

  Constructor.

  Parameters:

  roleName - name of the role

  mbeanClassName - name of the class of MBean(s) expected to be referenced in corresponding role. If an MBean M is in this role, then the MBean server must return true for isInstanceOf(M, mbeanClassName).

  read - flag to indicate if the corresponding role can be read

  write - flag to indicate if the corresponding role can be set

  Minimum and maximum degrees defaulted to 1.

  Description of role defaulted to null.

  Throws:

  IllegalArgumentException - if null parameter

  ClassNotFoundException - As of JMX 1.2, this exception can no longer be thrown. It is retained in the declaration of this class for compatibility with existing code.

  NotCompliantMBeanException - As of JMX 1.2, this exception can no longer be thrown. It is retained in the declaration of this class for compatibility with existing code.

• RoleInfo

  public RoleInfo​(String roleName,
                  String mbeanClassName)
           throws IllegalArgumentException,
                  ClassNotFoundException,
                  NotCompliantMBeanException

  Constructor.

  Parameters:

  roleName - name of the role

  mbeanClassName - name of the class of MBean(s) expected to be referenced in corresponding role. If an MBean M is in this role, then the MBean server must return true for isInstanceOf(M, mbeanClassName).

  IsReadable and IsWritable defaulted to true.

  Minimum and maximum degrees defaulted to 1.

  Description of role defaulted to null.

  Throws:

  IllegalArgumentException - if null parameter

  ClassNotFoundException - As of JMX 1.2, this exception can no longer be thrown. It is retained in the declaration of this class for compatibility with existing code.

  NotCompliantMBeanException - As of JMX 1.2, this exception can no longer be thrown. It is retained in the declaration of this class for compatibility with existing code.

• RoleInfo

  public RoleInfo​(RoleInfo roleInfo)
           throws IllegalArgumentException

  Copy constructor.

  Parameters:

  roleInfo - the RoleInfo instance to be copied.

  Throws:

  IllegalArgumentException - if null parameter

Method Detail

• getName

  public String getName()

  Returns the name of the role.

  Returns:

  the name of the role.

• isReadable

  public boolean isReadable()

  Returns read access mode for the role (true if it is readable).

  Returns:

  true if the role is readable.

• isWritable

  public boolean isWritable()

  Returns write access mode for the role (true if it is writable).

  Returns:

  true if the role is writable.

• getDescription

  public String getDescription()

  Returns description text for the role.

  Returns:

  the description of the role.

• getMinDegree

  public int getMinDegree()

  Returns minimum degree for corresponding role reference.

  Returns:

  the minimum degree.

• getMaxDegree

  public int getMaxDegree()

  Returns maximum degree for corresponding role reference.

  Returns:

  the maximum degree.

• getRefMBeanClassName

  public String getRefMBeanClassName()

  Returns name of type of MBean expected to be referenced in corresponding role.

  Returns:

  the name of the referenced type.

• checkMinDegree

  public boolean checkMinDegree​(int value)

  Returns true if the value parameter is greater than or equal to the expected minimum degree, false otherwise.

  Parameters:

  value - the value to be checked

  Returns:

  true if greater than or equal to minimum degree, false otherwise.

• checkMaxDegree

  public boolean checkMaxDegree​(int value)

  Returns true if the value parameter is lower than or equal to the expected maximum degree, false otherwise.

  Parameters:

  value - the value to be checked

  Returns:

  true if lower than or equal to maximum degree, false otherwise.

• toString

  public String toString()

  Returns a string describing the role info.

  Overrides:

  toString in class Object

  Returns:

  a description of the role info.