CORBA::NVList Class Reference

CORBA::NVList implementation. More...

#include <NVList.h>

Collaboration diagram for CORBA::NVList:

Collaboration graph
List of all members.

Public Types

typedef NVList_ptr _ptr_type
typedef NVList_var _var_type

Public Member Functions

 return the current number of elements in the list
NamedValue_ptr add (Flags ACE_ENV_ARG_DECL_WITH_DEFAULTS)
 add an element and just initialize the flags
NamedValue_ptr add_item (const char *, Flags ACE_ENV_ARG_DECL_WITH_DEFAULTS)
 add an element and initialize its name and flags
NamedValue_ptr add_value (const char *, const Any &, Flags ACE_ENV_ARG_DECL_WITH_DEFAULTS)
 initializes a value, name, and flags
NamedValue_ptr add_item_consume (char *, Flags ACE_ENV_ARG_DECL_WITH_DEFAULTS)
NamedValue_ptr add_value_consume (char *, Any_ptr, Flags ACE_ENV_ARG_DECL_WITH_DEFAULTS)
NamedValue_ptr item (ULong n ACE_ENV_ARG_DECL_WITH_DEFAULTS)
 retrieve the item at the nth location. Raises Bounds
 remove element at index n. Raises Bounds
ULong _incr_refcnt (void)
ULong _decr_refcnt (void)
void _tao_incoming_cdr (TAO_InputCDR &cdr, int flag, bool &lazy_evaluation ACE_ENV_ARG_DECL)
void _tao_encode (TAO_OutputCDR &cdr, int flag ACE_ENV_ARG_DECL_WITH_DEFAULTS)
void _tao_decode (TAO_InputCDR &cdr, int flag ACE_ENV_ARG_DECL)
 Decode the NVList arguments from the <cdr> stream.
ptrdiff_t _tao_target_alignment (void) const
Boolean _lazy_has_arguments (void) const

Static Public Member Functions

static NVList_duplicate (NVList *)
static NVList_nil (void)

Protected Member Functions

 ~NVList (void)

Private Member Functions

 NVList (void)
NamedValue_ptr add_element (Flags ACE_ENV_ARG_DECL_WITH_DEFAULTS)
void evaluate (ACE_ENV_SINGLE_ARG_DECL)

Private Attributes

ACE_Unbounded_Queue< NamedValue_ptrvalues_
 internal list of parameters stored as NamedValues
ULong max_
 maximum length of list
ULong refcount_
 maintains how many references exist to this object
TAO_SYNCH_MUTEX refcount_lock_
 Protects the reference count.
int incoming_flag_


class ORB
class Request

Detailed Description

CORBA::NVList implementation.

This is used in the (client side) DII (Dynamic Invocation Interface) to hold parameters, except for the return parameter. It's used in the same role in the (server side) DSI (Dynamic Skeleton Interface).

Each user (client, server) provides the typecode and memory for each parameter using an NVList, then talks to the ORB using a Request or ServerRequest pseudo-object. The ORB copies data to/from the IPC messages (e.g. IIOP::Request, IIOP::Response) as appropriate.

Member Typedef Documentation

typedef NVList_ptr CORBA::NVList::_ptr_type

typedef NVList_var CORBA::NVList::_var_type

Constructor & Destructor Documentation

CORBA::NVList::~NVList void   )  [protected]


Protected destructor to enforce proper memory management through the reference counting mechanism.

ACE_INLINE CORBA::NVList::NVList void   )  [private]

constructor - cannot be instantiated directly other than through the CORBA::ORB::create_list method

Member Function Documentation

CORBA::ULong CORBA::NVList::_decr_refcnt void   ) 

ACE_INLINE CORBA::NVList * CORBA::NVList::_duplicate NVList  )  [static]

CORBA::ULong CORBA::NVList::_incr_refcnt void   ) 

CORBA::Boolean CORBA::NVList::_lazy_has_arguments void   )  const

If this list is used by a DII request, this will tell us if our CDR stream contains any marshaled arguments (needed for GIOP 1.2).

ACE_INLINE CORBA::NVList * CORBA::NVList::_nil void   )  [static]

void CORBA::NVList::_tao_decode TAO_InputCDR cdr,
int flag  ACE_ENV_ARG_DECL

Decode the NVList arguments from the <cdr> stream.

void CORBA::NVList::_tao_encode TAO_OutputCDR cdr,

Encode the NVList into the CDR stream. <flag> masks the type of arguments (IN, OUT or INOUT) that are to be marshaled.

void CORBA::NVList::_tao_incoming_cdr TAO_InputCDR cdr,
int  flag,
bool &lazy_evaluation  ACE_ENV_ARG_DECL

Set the incoming CDR stream, this is used by TAO to perform lazy evaluation of the NVList in an incoming ServerRequest. The <flag> is used to check which parameters (IN, OUT and/or INOUT) are to be extracted

ptrdiff_t CORBA::NVList::_tao_target_alignment void   )  const

Return the required alignment to marshal the NVList without any re-alignment. It returns ACE_CDR::MAX_ALIGNMENT to indicate errors.

NamedValue_ptr CORBA::NVList::add Flags  ACE_ENV_ARG_DECL_WITH_DEFAULTS  ) 

add an element and just initialize the flags

NamedValue_ptr CORBA::NVList::add_element Flags  ACE_ENV_ARG_DECL_WITH_DEFAULTS  )  [private]

helper to increase the list size. This is used by all the add_ methods of the NVList class

NamedValue_ptr CORBA::NVList::add_item const char *  ,

add an element and initialize its name and flags

NamedValue_ptr CORBA::NVList::add_item_consume char *  ,

just like add_item. In addition, memory management of char * name is taken over by the NVList

NamedValue_ptr CORBA::NVList::add_value const char *  ,
const Any ,

initializes a value, name, and flags

NamedValue_ptr CORBA::NVList::add_value_consume char *  ,
Any_ptr  ,

just like add_value. In addition, the NVList controls the memory management of the char *name and Any *value parameter


return the current number of elements in the list

void CORBA::NVList::evaluate ACE_ENV_SINGLE_ARG_DECL   )  [private]

Lazy evaluation routine to fill up the Anys in the NVList from the CDR stream.


retrieve the item at the nth location. Raises Bounds


remove element at index n. Raises Bounds

Friends And Related Function Documentation

friend class ORB [friend]

friend class Request [friend]

Member Data Documentation

TAO_InputCDR* CORBA::NVList::incoming_ [private]

When the NVList is used as part of a Server Request we can simply store the CDR buffer and perform lazy evaluation to compute the Anys.

int CORBA::NVList::incoming_flag_ [private]

The flags used to check which parameters are actually extracted from the <incoming_> buffer

ULong CORBA::NVList::max_ [private]

maximum length of list

ULong CORBA::NVList::refcount_ [private]

maintains how many references exist to this object

TAO_SYNCH_MUTEX CORBA::NVList::refcount_lock_ [mutable, private]

Protects the reference count.

ACE_Unbounded_Queue<NamedValue_ptr> CORBA::NVList::values_ [private]

internal list of parameters stored as NamedValues

The documentation for this class was generated from the following files:
Generated on Wed Nov 23 16:04:40 2005 for TAO by  doxygen 1.4.5