Java org.omg.CORBA Class ORB（JDK8）

Constructor Detail

• ORB

  public ORB()

Method Detail

• init

  public static ORB init()

  Returns the ORB singleton object. This method always returns the same ORB instance, which is an instance of the class described by the org.omg.CORBA.ORBSingletonClass system property.

  This no-argument version of the method init is used primarily as a factory for TypeCode objects, which are used by Helper classes to implement the method type. It is also used to create Any objects that are used to describe union labels (as part of creating a TypeCode object for a union).

  This method is not intended to be used by applets, and in the event that it is called in an applet environment, the ORB it returns is restricted so that it can be used only as a factory for TypeCode objects. Any TypeCode objects it produces can be safely shared among untrusted applets.

  If an ORB is created using this method from an applet, a system exception will be thrown if methods other than those for creating TypeCode objects are invoked.

  Returns:

  the singleton ORB

• init

  public static ORB init(String[] args,
                         Properties props)

  Creates a new ORB instance for a standalone application. This method may be called from applications only and returns a new fully functional ORB object each time it is called.

  Parameters:

  args - command-line arguments for the application's main method; may be null

  props - application-specific properties; may be null

  Returns:

  the newly-created ORB instance

• init

  public static ORB init(Applet app,
                         Properties props)

  Creates a new ORB instance for an applet. This method may be called from applets only and returns a new fully-functional ORB object each time it is called.

  Parameters:

  app - the applet; may be null

  props - applet-specific properties; may be null

  Returns:

  the newly-created ORB instance

• set_parameters

  protected abstract void set_parameters(String[] args,
                                         Properties props)

  Allows the ORB implementation to be initialized with the given parameters and properties. This method, used in applications only, is implemented by subclass ORB implementations and called by the appropriate init method to pass in its parameters.

  Parameters:

  args - command-line arguments for the application's main method; may be null

  props - application-specific properties; may be null

• set_parameters

  protected abstract void set_parameters(Applet app,
                                         Properties props)

  Allows the ORB implementation to be initialized with the given applet and parameters. This method, used in applets only, is implemented by subclass ORB implementations and called by the appropriate init method to pass in its parameters.

  Parameters:

  app - the applet; may be null

  props - applet-specific properties; may be null

• connect

  public void connect(Object obj)

  Connects the given servant object (a Java object that is an instance of the server implementation class) to the ORB. The servant class must extend the ImplBase class corresponding to the interface that is supported by the server. The servant must thus be a CORBA object reference, and inherit from org.omg.CORBA.Object. Servants created by the user can start receiving remote invocations after the method connect has been called. A servant may also be automatically and implicitly connected to the ORB if it is passed as an IDL parameter in an IDL method invocation on a non-local object, that is, if the servant object has to be marshalled and sent outside of the process address space.

  Calling the method connect has no effect when the servant object is already connected to the ORB.

  Deprecated by the OMG in favor of the Portable Object Adapter APIs.

  Parameters:

  obj - The servant object reference

• destroy

  public void destroy()

  Destroys the ORB so that its resources can be reclaimed. Any operation invoked on a destroyed ORB reference will throw the OBJECT_NOT_EXIST exception. Once an ORB has been destroyed, another call to init with the same ORBid will return a reference to a newly constructed ORB.

  If destroy is called on an ORB that has not been shut down, it will start the shut down process and block until the ORB has shut down before it destroys the ORB.
  If an application calls destroy in a thread that is currently servicing an invocation, the BAD_INV_ORDER system exception will be thrown with the OMG minor code 3, since blocking would result in a deadlock.

  For maximum portability and to avoid resource leaks, an application should always call shutdown and destroy on all ORB instances before exiting.

  Throws:

  BAD_INV_ORDER - if the current thread is servicing an invocation

• disconnect

  public void disconnect(Object obj)

  Disconnects the given servant object from the ORB. After this method returns, the ORB will reject incoming remote requests for the disconnected servant and will send the exception org.omg.CORBA.OBJECT_NOT_EXIST back to the remote client. Thus the object appears to be destroyed from the point of view of remote clients. Note, however, that local requests issued using the servant directly do not pass through the ORB; hence, they will continue to be processed by the servant.

  Calling the method disconnect has no effect if the servant is not connected to the ORB.

  Deprecated by the OMG in favor of the Portable Object Adapter APIs.

  Parameters:

  obj - The servant object to be disconnected from the ORB

• list_initial_services

  public abstract String[] list_initial_services()

  Returns a list of the initially available CORBA object references, such as "NameService" and "InterfaceRepository".

  Returns:

  an array of String objects that represent the object references for CORBA services that are initially available with this ORB

• resolve_initial_references

  public abstract Object resolve_initial_references(String object_name)
                                             throws InvalidName

  Resolves a specific object reference from the set of available initial service names.

  Parameters:

  object_name - the name of the initial service as a string

  Returns:

  the object reference associated with the given name

  Throws:

  InvalidName - if the given name is not associated with a known service

• object_to_string

  public abstract String object_to_string(Object obj)

  Converts the given CORBA object reference to a string. Note that the format of this string is predefined by IIOP, allowing strings generated by a different ORB to be converted back into an object reference.

  The resulting String object may be stored or communicated in any way that a String object can be manipulated.

  Parameters:

  obj - the object reference to stringify

  Returns:

  the string representing the object reference

• string_to_object

  public abstract Object string_to_object(String str)

  Converts a string produced by the method object_to_string back to a CORBA object reference.

  Parameters:

  str - the string to be converted back to an object reference. It must be the result of converting an object reference to a string using the method object_to_string.

  Returns:

  the object reference

• create_list

  public abstract NVList create_list(int count)

  Allocates an NVList with (probably) enough space for the specified number of NamedValue objects. Note that the specified size is only a hint to help with storage allocation and does not imply the maximum size of the list.

  Parameters:

  count - suggested number of NamedValue objects for which to allocate space

  Returns:

  the newly-created NVList

  See Also:

  NVList

• create_operation_list

  public NVList create_operation_list(Object oper)

  Creates an NVList initialized with argument descriptions for the operation described in the given OperationDef object. This OperationDef object is obtained from an Interface Repository. The arguments in the returned NVList object are in the same order as in the original IDL operation definition, which makes it possible for the list to be used in dynamic invocation requests.

  Parameters:

  oper - the OperationDef object to use to create the list

  Returns:

  a newly-created NVList object containing descriptions of the arguments to the method described in the given OperationDef object

  See Also:

  NVList

• create_named_value

  public abstract NamedValue create_named_value(String s,
                                                Any any,
                                                int flags)

  Creates a NamedValue object using the given name, value, and argument mode flags.

  A NamedValue object serves as (1) a parameter or return value or (2) a context property. It may be used by itself or as an element in an NVList object.

  Parameters:

  s - the name of the NamedValue object

  any - the Any value to be inserted into the NamedValue object

  flags - the argument mode flags for the NamedValue: one of ARG_IN.value, ARG_OUT.value, or ARG_INOUT.value.

  Returns:

  the newly-created NamedValue object

  See Also:

  NamedValue

• create_exception_list

  public abstract ExceptionList create_exception_list()

  Creates an empty ExceptionList object.

  Returns:

  the newly-created ExceptionList object

• create_context_list

  public abstract ContextList create_context_list()

  Creates an empty ContextList object.

  Returns:

  the newly-created ContextList object

  See Also:

  ContextList, Context

• get_default_context

  public abstract Context get_default_context()

  Gets the default Context object.

  Returns:

  the default Context object

  See Also:

  Context

• create_environment

  public abstract Environment create_environment()

  Creates an Environment object.

  Returns:

  the newly-created Environment object

  See Also:

  Environment

• create_output_stream

  public abstract OutputStream create_output_stream()

  Creates a new org.omg.CORBA.portable.OutputStream into which IDL method parameters can be marshalled during method invocation.

  Returns:

  the newly-created org.omg.CORBA.portable.OutputStream object

• send_multiple_requests_oneway

  public abstract void send_multiple_requests_oneway(Request[] req)

  Sends multiple dynamic (DII) requests asynchronously without expecting any responses. Note that oneway invocations are not guaranteed to reach the server.

  Parameters:

  req - an array of request objects

• send_multiple_requests_deferred

  public abstract void send_multiple_requests_deferred(Request[] req)

  Sends multiple dynamic (DII) requests asynchronously.

  Parameters:

  req - an array of Request objects

• poll_next_response

  public abstract boolean poll_next_response()

  Finds out if any of the deferred (asynchronous) invocations have a response yet.

  Returns:

  true if there is a response available; false otherwise

• get_next_response

  public abstract Request get_next_response()
                                     throws WrongTransaction

  Gets the next Request instance for which a response has been received.

  Returns:

  the next Request object ready with a response

  Throws:

  WrongTransaction - if the method get_next_response is called from a transaction scope different from the one from which the original request was sent. See the OMG Transaction Service specification for details.

• get_primitive_tc

  public abstract TypeCode get_primitive_tc(TCKind tcKind)

  Retrieves the TypeCode object that represents the given primitive IDL type.

  Parameters:

  tcKind - the TCKind instance corresponding to the desired primitive type

  Returns:

  the requested TypeCode object

• create_struct_tc

  public abstract TypeCode create_struct_tc(String id,
                                            String name,
                                            StructMember[] members)

  Creates a TypeCode object representing an IDL struct. The TypeCode object is initialized with the given id, name, and members.

  Parameters:

  id - the repository id for the struct

  name - the name of the struct

  members - an array describing the members of the struct

  Returns:

  a newly-created TypeCode object describing an IDL struct

• create_union_tc

  public abstract TypeCode create_union_tc(String id,
                                           String name,
                                           TypeCode discriminator_type,
                                           UnionMember[] members)

  Creates a TypeCode object representing an IDL union. The TypeCode object is initialized with the given id, name, discriminator type, and members.

  Parameters:

  id - the repository id of the union

  name - the name of the union

  discriminator_type - the type of the union discriminator

  members - an array describing the members of the union

  Returns:

  a newly-created TypeCode object describing an IDL union

• create_enum_tc

  public abstract TypeCode create_enum_tc(String id,
                                          String name,
                                          String[] members)

  Creates a TypeCode object representing an IDL enum. The TypeCode object is initialized with the given id, name, and members.

  Parameters:

  id - the repository id for the enum

  name - the name for the enum

  members - an array describing the members of the enum

  Returns:

  a newly-created TypeCode object describing an IDL enum

• create_alias_tc

  public abstract TypeCode create_alias_tc(String id,
                                           String name,
                                           TypeCode original_type)

  Creates a TypeCode object representing an IDL alias (typedef). The TypeCode object is initialized with the given id, name, and original type.

  Parameters:

  id - the repository id for the alias

  name - the name for the alias

  original_type - the TypeCode object describing the original type for which this is an alias

  Returns:

  a newly-created TypeCode object describing an IDL alias

• create_exception_tc

  public abstract TypeCode create_exception_tc(String id,
                                               String name,
                                               StructMember[] members)

  Creates a TypeCode object representing an IDL exception. The TypeCode object is initialized with the given id, name, and members.

  Parameters:

  id - the repository id for the exception

  name - the name for the exception

  members - an array describing the members of the exception

  Returns:

  a newly-created TypeCode object describing an IDL exception

• create_interface_tc

  public abstract TypeCode create_interface_tc(String id,
                                               String name)

  Creates a TypeCode object representing an IDL interface. The TypeCode object is initialized with the given id and name.

  Parameters:

  id - the repository id for the interface

  name - the name for the interface

  Returns:

  a newly-created TypeCode object describing an IDL interface

• create_string_tc

  public abstract TypeCode create_string_tc(int bound)

  Creates a TypeCode object representing a bounded IDL string. The TypeCode object is initialized with the given bound, which represents the maximum length of the string. Zero indicates that the string described by this type code is unbounded.

  Parameters:

  bound - the bound for the string; cannot be negative

  Returns:

  a newly-created TypeCode object describing a bounded IDL string

  Throws:

  BAD_PARAM - if bound is a negative value

• create_wstring_tc

  public abstract TypeCode create_wstring_tc(int bound)

  Creates a TypeCode object representing a bounded IDL wstring (wide string). The TypeCode object is initialized with the given bound, which represents the maximum length of the wide string. Zero indicates that the string described by this type code is unbounded.

  Parameters:

  bound - the bound for the wstring; cannot be negative

  Returns:

  a newly-created TypeCode object describing a bounded IDL wstring

  Throws:

  BAD_PARAM - if bound is a negative value

• create_sequence_tc

  public abstract TypeCode create_sequence_tc(int bound,
                                              TypeCode element_type)

  Creates a TypeCode object representing an IDL sequence. The TypeCode object is initialized with the given bound and element type.

  Parameters:

  bound - the bound for the sequence, 0 if unbounded

  element_type - the TypeCode object describing the elements contained in the sequence

  Returns:

  a newly-created TypeCode object describing an IDL sequence

• create_recursive_sequence_tc

  @Deprecated
  public abstract TypeCode create_recursive_sequence_tc(int bound,
                                                                    int offset)

  Deprecated. Use a combination of create_recursive_tc and create_sequence_tc instead
  Creates a TypeCode object representing a a recursive IDL sequence.

  For the IDL struct Node in following code fragment, the offset parameter for creating its sequence would be 1:

      Struct Node {
          long value;
          Sequence <Node> subnodes;
      };
   

  Parameters:

  bound - the bound for the sequence, 0 if unbounded

  offset - the index to the enclosing TypeCode object that describes the elements of this sequence

  Returns:

  a newly-created TypeCode object describing a recursive sequence

  See Also:

  create_recursive_tc, create_sequence_tc

• create_array_tc

  public abstract TypeCode create_array_tc(int length,
                                           TypeCode element_type)

  Creates a TypeCode object representing an IDL array. The TypeCode object is initialized with the given length and element type.

  Parameters:

  length - the length of the array

  element_type - a TypeCode object describing the type of element contained in the array

  Returns:

  a newly-created TypeCode object describing an IDL array

• create_native_tc

  public TypeCode create_native_tc(String id,
                                   String name)

  Create a TypeCode object for an IDL native type.

  Parameters:

  id - the logical id for the native type.

  name - the name of the native type.

  Returns:

  the requested TypeCode.

• create_abstract_interface_tc

  public TypeCode create_abstract_interface_tc(String id,
                                               String name)

  Create a TypeCode object for an IDL abstract interface.

  Parameters:

  id - the logical id for the abstract interface type.

  name - the name of the abstract interface type.

  Returns:

  the requested TypeCode.

• create_fixed_tc

  public TypeCode create_fixed_tc(short digits,
                                  short scale)

  Create a TypeCode object for an IDL fixed type.

  Parameters:

  digits - specifies the total number of decimal digits in the number and must be from 1 to 31 inclusive.

  scale - specifies the position of the decimal point.

  Returns:

  the requested TypeCode.

• create_value_tc

  public TypeCode create_value_tc(String id,
                                  String name,
                                  short type_modifier,
                                  TypeCode concrete_base,
                                  ValueMember[] members)

  Create a TypeCode object for an IDL value type. The concrete_base parameter is the TypeCode for the immediate concrete valuetype base of the valuetype for which the TypeCode is being created. It may be null if the valuetype does not have a concrete base.

  Parameters:

  id - the logical id for the value type.

  name - the name of the value type.

  type_modifier - one of the value type modifier constants: VM_NONE, VM_CUSTOM, VM_ABSTRACT or VM_TRUNCATABLE

  concrete_base - a TypeCode object describing the concrete valuetype base

  members - an array containing the members of the value type

  Returns:

  the requested TypeCode

• create_recursive_tc

  public TypeCode create_recursive_tc(String id)

  Create a recursive TypeCode object which serves as a placeholder for a concrete TypeCode during the process of creating TypeCodes which contain recursion. The id parameter specifies the repository id of the type for which the recursive TypeCode is serving as a placeholder. Once the recursive TypeCode has been properly embedded in the enclosing TypeCode which corresponds to the specified repository id, it will function as a normal TypeCode. Invoking operations on the recursive TypeCode before it has been embedded in the enclosing TypeCode will result in a BAD_TYPECODE exception.

  For example, the following IDL type declaration contains recursion:

      Struct Node {
          Sequence<Node> subnodes;
      };
   

  To create a TypeCode for struct Node, you would invoke the TypeCode creation operations as shown below:

   String nodeID = "IDL:Node:1.0";
   TypeCode recursiveSeqTC = orb.create_sequence_tc(0, orb.create_recursive_tc(nodeID));
   StructMember[] members = { new StructMember("subnodes", recursiveSeqTC, null) };
   TypeCode structNodeTC = orb.create_struct_tc(nodeID, "Node", members);
   

  Also note that the following is an illegal IDL type declaration:

      Struct Node {
          Node next;
      };
   

  Recursive types can only appear within sequences which can be empty. That way marshaling problems, when transmitting the struct in an Any, are avoided.

  Parameters:

  id - the logical id of the referenced type

  Returns:

  the requested TypeCode

• create_value_box_tc

  public TypeCode create_value_box_tc(String id,
                                      String name,
                                      TypeCode boxed_type)

  Creates a TypeCode object for an IDL value box.

  Parameters:

  id - the logical id for the value type

  name - the name of the value type

  boxed_type - the TypeCode for the type

  Returns:

  the requested TypeCode

• create_any

  public abstract Any create_any()

  Creates an IDL Any object initialized to contain a Typecode object whose kind field is set to TCKind.tc_null.

  Returns:

  a newly-created Any object

• get_current

  @Deprecated
  public Current get_current()

  Deprecated. use resolve_initial_references.
  Retrieves a Current object. The Current interface is used to manage thread-specific information for use by services such as transactions and security.

  Returns:

  a newly-created Current object

  See Also:

  CORBA package comments for unimplemented features

• run

  public void run()

  This operation blocks the current thread until the ORB has completed the shutdown process, initiated when some thread calls shutdown. It may be used by multiple threads which get all notified when the ORB shuts down.

• shutdown

  public void shutdown(boolean wait_for_completion)

  Instructs the ORB to shut down, which causes all object adapters to shut down, in preparation for destruction.
  If the wait_for_completion parameter is true, this operation blocks until all ORB processing (including processing of currently executing requests, object deactivation, and other object adapter operations) has completed. If an application does this in a thread that is currently servicing an invocation, the BAD_INV_ORDER system exception will be thrown with the OMG minor code 3, since blocking would result in a deadlock.
  If the wait_for_completion parameter is FALSE, then shutdown may not have completed upon return.

  While the ORB is in the process of shutting down, the ORB operates as normal, servicing incoming and outgoing requests until all requests have been completed. Once an ORB has shutdown, only object reference management operations may be invoked on the ORB or any object reference obtained from it. An application may also invoke the destroy operation on the ORB itself. Invoking any other operation will throw the BAD_INV_ORDER system exception with the OMG minor code 4.

  The ORB.run method will return after shutdown has been called.

  Parameters:

  wait_for_completion - true if the call should block until the shutdown is complete; false if it should return immediately

  Throws:

  BAD_INV_ORDER - if the current thread is servicing an invocation

• work_pending

  public boolean work_pending()

  Returns true if the ORB needs the main thread to perform some work, and false if the ORB does not need the main thread.

  Returns:

  true if there is work pending, meaning that the ORB needs the main thread to perform some work; false if there is no work pending and thus the ORB does not need the main thread

• perform_work

  public void perform_work()

  Performs an implementation-dependent unit of work if called by the main thread. Otherwise it does nothing. The methods work_pending and perform_work can be used in conjunction to implement a simple polling loop that multiplexes the main thread among the ORB and other activities.

• get_service_information

  public boolean get_service_information(short service_type,
                                         ServiceInformationHolder service_info)

  Used to obtain information about CORBA facilities and services that are supported by this ORB. The service type for which information is being requested is passed in as the in parameter service_type, the values defined by constants in the CORBA module. If service information is available for that type, that is returned in the out parameter service_info, and the operation returns the value true. If no information for the requested services type is available, the operation returns false (i.e., the service is not supported by this ORB).

  Parameters:

  service_type - a short indicating the service type for which information is being requested

  service_info - a ServiceInformationHolder object that will hold the ServiceInformation object produced by this method

  Returns:

  true if service information is available for the service_type; false if no information for the requested services type is available

  See Also:

  CORBA package comments for unimplemented features

• create_dyn_any

  @Deprecated
  public DynAny create_dyn_any(Any value)

  Deprecated. Use the new DynAnyFactory API instead
  Creates a new DynAny object from the given Any object.

  Parameters:

  value - the Any object from which to create a new DynAny object

  Returns:

  the new DynAny object created from the given Any object

  See Also:

  CORBA package comments for unimplemented features

• create_basic_dyn_any

  @Deprecated
  public DynAny create_basic_dyn_any(TypeCode type)
                                          throws InconsistentTypeCode

  Deprecated. Use the new DynAnyFactory API instead
  Creates a basic DynAny object from the given TypeCode object.

  Parameters:

  type - the TypeCode object from which to create a new DynAny object

  Returns:

  the new DynAny object created from the given TypeCode object

  Throws:

  InconsistentTypeCode - if the given TypeCode object is not consistent with the operation.

  See Also:

  CORBA package comments for unimplemented features

• create_dyn_struct

  @Deprecated
  public DynStruct create_dyn_struct(TypeCode type)
                                          throws InconsistentTypeCode

  Deprecated. Use the new DynAnyFactory API instead
  Creates a new DynStruct object from the given TypeCode object.

  Parameters:

  type - the TypeCode object from which to create a new DynStruct object

  Returns:

  the new DynStruct object created from the given TypeCode object

  Throws:

  InconsistentTypeCode - if the given TypeCode object is not consistent with the operation.

  See Also:

  CORBA package comments for unimplemented features

• create_dyn_sequence

  @Deprecated
  public DynSequence create_dyn_sequence(TypeCode type)
                                              throws InconsistentTypeCode

  Deprecated. Use the new DynAnyFactory API instead
  Creates a new DynSequence object from the given TypeCode object.

  Parameters:

  type - the TypeCode object from which to create a new DynSequence object

  Returns:

  the new DynSequence object created from the given TypeCode object

  Throws:

  InconsistentTypeCode - if the given TypeCode object is not consistent with the operation.

  See Also:

  CORBA package comments for unimplemented features

• create_dyn_array

  @Deprecated
  public DynArray create_dyn_array(TypeCode type)
                                        throws InconsistentTypeCode

  Deprecated. Use the new DynAnyFactory API instead
  Creates a new DynArray object from the given TypeCode object.

  Parameters:

  type - the TypeCode object from which to create a new DynArray object

  Returns:

  the new DynArray object created from the given TypeCode object

  Throws:

  InconsistentTypeCode - if the given TypeCode object is not consistent with the operation.

  See Also:

  CORBA package comments for unimplemented features

• create_dyn_union

  @Deprecated
  public DynUnion create_dyn_union(TypeCode type)
                                        throws InconsistentTypeCode

  Deprecated. Use the new DynAnyFactory API instead
  Creates a new DynUnion object from the given TypeCode object.

  Parameters:

  type - the TypeCode object from which to create a new DynUnion object

  Returns:

  the new DynUnion object created from the given TypeCode object

  Throws:

  InconsistentTypeCode - if the given TypeCode object is not consistent with the operation.

  See Also:

  CORBA package comments for unimplemented features

• create_dyn_enum

  @Deprecated
  public DynEnum create_dyn_enum(TypeCode type)
                                      throws InconsistentTypeCode

  Deprecated. Use the new DynAnyFactory API instead
  Creates a new DynEnum object from the given TypeCode object.

  Parameters:

  type - the TypeCode object from which to create a new DynEnum object

  Returns:

  the new DynEnum object created from the given TypeCode object

  Throws:

  InconsistentTypeCode - if the given TypeCode object is not consistent with the operation.

  See Also:

  CORBA package comments for unimplemented features

• create_policy

  public Policy create_policy(int type,
                              Any val)
                       throws PolicyError

  Can be invoked to create new instances of policy objects of a specific type with specified initial state. If create_policy fails to instantiate a new Policy object due to its inability to interpret the requested type and content of the policy, it raises the PolicyError exception with the appropriate reason.

  Parameters:

  type - the PolicyType of the policy object to be created

  val - the value that will be used to set the initial state of the Policy object that is created

  Returns:

  Reference to a newly created Policy object of type specified by the type parameter and initialized to a state specified by the val parameter

  Throws:

  org.omg.CORBA.PolicyError - when the requested policy is not supported or a requested initial state for the policy is not supported.

  PolicyError