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• java
• j2se
• 1.6
• javax.management.remote.rmi
• RMIConnector

Methods

• RMIConnectortop

  public RMIConnector(JMXServiceURL url, Map<?> environment)

  Constructs an RMIConnector that will connect the RMI connector server with the given address.

  The address can refer directly to the connector server, using one of the following syntaxes:

   service:jmx:rmi://[host[:port]]/stub/encoded-stub
   service:jmx:iiop://[host[:port]]/ior/encoded-IOR
   

  (Here, the square brackets [] are not part of the address but indicate that the host and port are optional.)

  The address can instead indicate where to find an RMI stub through JNDI, using one of the following syntaxes:

   service:jmx:rmi://[host[:port]]/jndi/jndi-name
   service:jmx:iiop://[host[:port]]/jndi/jndi-name
   

  An implementation may also recognize additional address syntaxes, for example:

   service:jmx:iiop://[host[:port]]/stub/encoded-stub
   

  Parameters:

  @param url the address of the RMI connector server.

  @param environment additional attributes specifying how to make the connection. For JNDI-based addresses, these attributes can usefully include JNDI attributes recognized by InitialContext . This parameter can be null, which is equivalent to an empty Map.

  Exceptions:

  @exception IllegalArgumentException if url is null.

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• RMIConnectortop

  public RMIConnector(RMIServer rmiServer, Map<?> environment)

  Constructs an RMIConnector using the given RMI stub.

  Parameters:

  @param rmiServer an RMI stub representing the RMI connector server.

  @param environment additional attributes specifying how to make the connection. This parameter can be null, which is equivalent to an empty Map.

  Exceptions:

  @exception IllegalArgumentException if rmiServer is null.

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• RMIConnectortop

  private RMIConnector(RMIServer rmiServer, JMXServiceURL address, Map<?> environment)

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• addConnectionNotificationListenertop

  public void addConnectionNotificationListener(NotificationListener listener, NotificationFilter filter, Object handback)

  Adds a listener to be informed of changes in connection status. The listener will receive notifications of type javax.management.remote.JMXConnectionNotification. An implementation can send other types of notifications too.

  Any number of listeners can be added with this method. The same listener can be added more than once with the same or different values for the filter and handback. There is no special treatment of a duplicate entry. For example, if a listener is registered twice with no filter, then its handleNotification method will be called twice for each notification.

  Parameters:

  @param listener a listener to receive connection status notifications.

  @param filter a filter to select which notifications are to be delivered to the listener, or null if all notifications are to be delivered.

  @param handback an object to be given to the listener along with each notification. Can be null.

  Specified by:

  addConnectionNotificationListener from JMXConnector

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• addListenerWithSubjecttop

  private Integer addListenerWithSubject(ObjectName name, MarshalledObject filter, Subject delegationSubject, boolean reconnect) throws InstanceNotFoundException, IOException

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• addListenersWithSubjectstop

  private Integer[] addListenersWithSubjects(ObjectName[] names, MarshalledObject[] filters, Subject[] delegationSubjects, boolean reconnect) throws InstanceNotFoundException, IOException

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• base64ToByteArraytop

  static private byte[] base64ToByteArray(String s)

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• base64toInttop

  static private int base64toInt(char c)
  Translates the specified character, which is assumed to be in the "Base 64 Alphabet" into its equivalent 6-bit positive integer.

  Exceptions:

  @throws IllegalArgumentException if c is not in the Base64 Alphabet.

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• checkStubtop

  static private void checkStub(Remote stub, Class<?> stubClass)

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• closetop

  public synchronized void close() throws IOException

  Closes the client connection to its server. Any ongoing or new request using the MBeanServerConnection returned by javax.management.remote.JMXConnector.getMBeanServerConnection() will get an IOException.

  If close has already been called successfully on this object, calling it again has no effect. If close has never been called, or if it was called but produced an exception, an attempt will be made to close the connection. This attempt can succeed, in which case close will return normally, or it can generate an exception.

  Closing a connection is a potentially slow operation. For example, if the server has crashed, the close operation might have to wait for a network protocol timeout. Callers that do not want to block in a close operation should do it in a separate thread.

  Exceptions:

  @exception IOException if the connection cannot be closed cleanly. If this exception is thrown, it is not known whether the server end of the connection has been cleanly closed.

  Specified by:

  close from JMXConnector

  close from Closeable

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• closetop

  synchronized private void close(boolean intern) throws IOException

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• connecttop

  public void connect() throws IOException

  Establishes the connection to the connector server. This method is equivalent to connect(null).

  Exceptions:

  @exception IOException if the connection could not be made because of a communication problem.

  Specified by:

  connect from JMXConnector

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• connecttop

  public synchronized void connect(Map<?> environment) throws IOException

  Establishes the connection to the connector server.

  If connect has already been called successfully on this object, calling it again has no effect. If, however, javax.management.remote.JMXConnector.close() was called after connect, the new connect will throw an IOException.

  Otherwise, either connect has never been called on this object, or it has been called but produced an exception. Then calling connect will attempt to establish a connection to the connector server.

  Exceptions:

  @exception IOException if the connection could not be made because of a communication problem.

  Specified by:

  connect from JMXConnector

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• connectStubtop

  static RMIServer connectStub(RMIServer rmiServer, Map environment) throws IOException

  In order to be usable, an IIOP stub must be connected to an ORB. The stub is automatically connected to the ORB if:

  • It was returned by the COS naming
  • Its server counterpart has been registered in COS naming through JNDI.

  Otherwise, it is not connected. A stub which is deserialized from Jini is not connected. A stub which is obtained from a non registered RMIIIOPServerImpl is not a connected.
  A stub which is not connected can't be serialized, and thus can't be registered in Jini. A stub which is not connected can't be used to invoke methods on the server.

  In order to palliate this, this method will connect the given stub if it is not yet connected. If the given RMIServer is not an instance of javax.rmi.CORBA.Stub, then the method do nothing and simply returns that stub. Otherwise, this method will attempt to connect the stub to an ORB as follows:

  This method looks in the provided environment for the "java.naming.corba.orb" property. If it is found, the referenced object (an ORB) is used to connect the stub. Otherwise, a new org.omg.CORBA.ORB is created by calling org.omg.CORBA.ORB.init((String[])null,(Properties)null)

  The new created ORB is kept in a static java.lang.ref.WeakReference and can be reused for connecting other stubs. However, no reference is ever kept on the ORB provided in the environment map, if any.

  Parameters:

  @param rmiServer A RMI Server Stub.

  @param environment An environment map, possibly containing an ORB.

  Return:

  @return the given stub.

  Exceptions:

  @exception IllegalArgumentException if the java.naming.corba.orb property is specified and does not point to an ORB .

  @exception IOException if the connection to the ORB failed.

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• findRMIServertop

  private RMIServer findRMIServer(JMXServiceURL directoryURL, Map<String, Object> environment) throws NamingException, IOException

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• findRMIServerIIOPtop

  private RMIServer findRMIServerIIOP(String ior, Map env, boolean isIiop)

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• findRMIServerJNDItop

  private RMIServer findRMIServerJNDI(String jndiURL, Map<?> env, boolean isIiop) throws NamingException
  Lookup the RMIServer stub in a directory.

  Parameters:

  @param jndiURL A JNDI URL indicating the location of the Stub (see javax.management.remote.rmi ), e.g.:

  • rmi://registry-host:port/rmi-stub-name
  • or iiop://cosnaming-host:port/iiop-stub-name
  • or ldap://ldap-host:port/java-container-dn

  @param env the environment Map passed to the connector.

  @param isIiop true if the stub is expected to be an IIOP stub.

  Return:

  @return The retrieved RMIServer stub.

  Exceptions:

  @exception NamingException if the stub couldn't be found.

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• findRMIServerJRMPtop

  private RMIServer findRMIServerJRMP(String base64, Map env, boolean isIiop) throws IOException

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• getAddresstop

  public JMXServiceURL getAddress()

  The address of this connector.

  Return:

  @return the address of this connector, or null if it does not have one.

  Since:

  @since 1.6

  Specified by:

  getAddress from JMXAddressable

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• getConnectiontop

  static private RMIConnection getConnection(RMIServer server, Object credentials, boolean checkStub) throws IOException

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• getConnectionIdtop

  public synchronized String getConnectionId() throws IOException

  Gets this connection's ID from the connector server. For a given connector server, every connection will have a unique id which does not change during the lifetime of the connection.

  Return:

  @return the unique ID of this connection. This is the same as the ID that the connector server includes in its javax.management.remote.JMXConnectionNotification s. The package description describes the conventions for connection IDs.

  Exceptions:

  @exception IOException if the connection ID cannot be obtained, for instance because the connection is closed or broken.

  Specified by:

  getConnectionId from JMXConnector

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• getMBeanServerConnectiontop

  public synchronized MBeanServerConnection getMBeanServerConnection() throws IOException

  Returns an MBeanServerConnection object representing a remote MBean server. For a given JMXConnector, two successful calls to this method will usually return the same MBeanServerConnection object, though this is not required.

  For each method in the returned MBeanServerConnection, calling the method causes the corresponding method to be called in the remote MBean server. The value returned by the MBean server method is the value returned to the client. If the MBean server method produces an Exception, the same Exception is seen by the client. If the MBean server method, or the attempt to call it, produces an Error, the Error is wrapped in a javax.management.remote.JMXServerErrorException, which is seen by the client.

  Calling this method is equivalent to calling getMBeanServerConnection(null) meaning that no delegation subject is specified and that all the operations called on the MBeanServerConnection must use the authenticated subject, if any.

  Return:

  @return an object that implements the MBeanServerConnection interface by forwarding its methods to the remote MBean server.

  Exceptions:

  @exception IOException if a valid MBeanServerConnection cannot be created, for instance because the connection to the remote MBean server has not yet been established (with the connect method), or it has been closed, or it has broken.

  Specified by:

  getMBeanServerConnection from JMXConnector

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• getMBeanServerConnectiontop

  public synchronized MBeanServerConnection getMBeanServerConnection(Subject delegationSubject) throws IOException

  Returns an MBeanServerConnection object representing a remote MBean server on which operations are performed on behalf of the supplied delegation subject. For a given JMXConnector and Subject, two successful calls to this method will usually return the same MBeanServerConnection object, though this is not required.

  For each method in the returned MBeanServerConnection, calling the method causes the corresponding method to be called in the remote MBean server on behalf of the given delegation subject instead of the authenticated subject. The value returned by the MBean server method is the value returned to the client. If the MBean server method produces an Exception, the same Exception is seen by the client. If the MBean server method, or the attempt to call it, produces an Error, the Error is wrapped in a javax.management.remote.JMXServerErrorException, which is seen by the client.

  Parameters:

  @param delegationSubject the Subject on behalf of which requests will be performed. Can be null, in which case requests will be performed on behalf of the authenticated Subject, if any.

  Return:

  @return an object that implements the MBeanServerConnection interface by forwarding its methods to the remote MBean server on behalf of a given delegation subject.

  Exceptions:

  @exception IOException if a valid MBeanServerConnection cannot be created, for instance because the connection to the remote MBean server has not yet been established (with the connect method), or it has been closed, or it has broken.

  Specified by:

  getMBeanServerConnection from JMXConnector

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• initTransientstop

  private void initTransients()

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• narrowIIOPServertop

  static private RMIServer narrowIIOPServer(Object objref)

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• narrowJRMPServertop

  static private RMIServer narrowJRMPServer(Object objref)

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• objectstop

  static private String objects(Object[] objs)

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• popDefaultClassLoadertop

  private void popDefaultClassLoader(ClassLoader old)

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• pushDefaultClassLoadertop

  private ClassLoader pushDefaultClassLoader()

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• readObjecttop

  private void readObject(ObjectInputStream s) throws IOException, ClassNotFoundException
  Read RMIConnector fields from an ObjectInputStream. Calls s.defaultReadObject() and then initializes all transient variables that need initializing.

  Parameters:

  @param s The ObjectInputStream to read from.

  Exceptions:

  @exception InvalidObjectException if none of rmiServer stub or jmxServiceURL are set.

  See:

  @see javax.management.remote.rmi.RMIConnector.RMIConnector(javax.management.remote.JMXServiceURL, java.util.Map)

  @see javax.management.remote.rmi.RMIConnector.RMIConnector(javax.management.remote.rmi.RMIServer, java.util.Map)

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• removeConnectionNotificationListenertop

  public void removeConnectionNotificationListener(NotificationListener listener) throws ListenerNotFoundException

  Removes a listener from the list to be informed of changes in status. The listener must previously have been added. If there is more than one matching listener, all are removed.

  Parameters:

  @param listener a listener to receive connection status notifications.

  Exceptions:

  @exception ListenerNotFoundException if the listener is not registered with this JMXConnector.

  Specified by:

  removeConnectionNotificationListener from JMXConnector

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• removeConnectionNotificationListenertop

  public void removeConnectionNotificationListener(NotificationListener listener, NotificationFilter filter, Object handback) throws ListenerNotFoundException

  Removes a listener from the list to be informed of changes in status. The listener must previously have been added with the same three parameters. If there is more than one matching listener, only one is removed.

  Parameters:

  @param handback an object to be given to the listener along with each notification. Can be null.

  Exceptions:

  @exception ListenerNotFoundException if the listener is not registered with this JMXConnector, or is not registered with the given filter and handback.

  Specified by:

  removeConnectionNotificationListener from JMXConnector

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• resolveOrbtop

  static ORB resolveOrb(Map environment) throws IOException
  Get the ORB specified by environment, or create a new one.

  This method looks in the provided environment for the "java.naming.corba.orb" property. If it is found, the referenced object (an ORB) is returned. Otherwise, a new org.omg.CORBA.ORB is created by calling org.omg.CORBA.ORB.init((String[])null,(Properties)null)

  The new created ORB is kept in a static java.lang.ref.WeakReference and can be reused for connecting other stubs. However, no reference is ever kept on the ORB provided in the environment map, if any.

  Parameters:

  @param environment An environment map, possibly containing an ORB.

  Return:

  @return An ORB.

  Exceptions:

  @exception IllegalArgumentException if the java.naming.corba.orb property is specified and does not point to an ORB .

  @exception IOException if the ORB initialization failed.

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• sendNotificationtop

  private void sendNotification(Notification n)

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• shadowIiopStubtop

  static private RMIConnection shadowIiopStub(Stub stub) throws InstantiationException, IllegalAccessException

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• shadowJrmpStubtop

  static private RMIConnection shadowJrmpStub(RemoteObject stub) throws InstantiationException, IllegalAccessException, InvocationTargetException, ClassNotFoundException, NoSuchMethodException

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• stringstop

  static private String strings(String[] strs)

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• toStringtop

  public String toString()

  Returns a string representation of this object. In general, the toString method returns a string that "textually represents" this object. The result should be a concise but informative representation that is easy for a person to read.

  Return:

  @return a String representation of this object.

  Override hierarchy:

  toString from Object

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• writeObjecttop

  private void writeObject(ObjectOutputStream s) throws IOException
  Writes the RMIConnector fields to an ObjectOutputStream.

  Connects the underlying RMIServer stub to an ORB, if needed, before serializing it. This is done using the environment map that was provided to the constructor, if any, and as documented in javax.management.remote.rmi.

  This method then calls s.defaultWriteObject(). Usually, rmiServer is null if this object was constructed with a JMXServiceURL, and jmxServiceURL is null if this object is constructed with a RMIServer stub.

  Note that the environment Map is not serialized, since the objects it contains are assumed to be contextual and relevant only with respect to the local environment (class loader, ORB, etc...).

  After an RMIConnector is deserialized, it is assumed that the user will call javax.management.remote.rmi.RMIConnector.connect(java.util.Map), providing a new Map that can contain values which are contextually relevant to the new local environment.

  Since connection to the ORB is needed prior to serializing, and since the ORB to connect to is one of those contextual parameters, it is not recommended to re-serialize a just de-serialized object - as the de-serialized object has no map. Thus, when an RMIConnector object is needed for serialization or transmission to a remote application, it is recommended to obtain a new RMIConnector stub by calling javax.management.remote.rmi.RMIConnectorServer.toJMXConnector(java.util.Map).

  Parameters:

  @param s The ObjectOutputStream to write to.

  Exceptions:

  @exception InvalidObjectException if none of rmiServer stub or jmxServiceURL are set.

  See:

  @see javax.management.remote.rmi.RMIConnector.RMIConnector(javax.management.remote.JMXServiceURL, java.util.Map)

  @see javax.management.remote.rmi.RMIConnector.RMIConnector(javax.management.remote.rmi.RMIServer, java.util.Map)

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