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/* -*- C++ -*- */
// $Id$
// ============================================================================
//
// = LIBRARY
// cos
//
// = FILENAME
// Naming_Context.h
//
// = AUTHOR
// Marina Spivak <marina@cs.wustl.edu>
//
// ============================================================================
#ifndef TAO_NAMING_CONTEXT_H
#define TAO_NAMING_CONTEXT_H
#include "orbsvcs/CosNamingS.h"
class TAO_Naming_Context_Impl;
// This is to remove "inherits via dominance" warnings from MSVC.
#if defined (_MSC_VER)
# pragma warning (disable : 4250)
#endif /* _MSC_VER */
class TAO_ORBSVCS_Export TAO_Naming_Context :
public virtual PortableServer::RefCountServantBase,
public virtual POA_CosNaming::NamingContext
{
// = TITLE
// This class plays a role of the 'Abstraction' (aka 'Interface')
// in the Bridge pattern architecture of the
// CosNaming::NamingContext implementation.
//
// = DESCRIPTION
// This class simply forwards all client requests to a concrete
// NamingContext implementation through its <impl_> pointer. See
// README file for more info. Comments for the idl methods
// describe methods semantics - actual actions are carried out by
// concrete implementors.
public:
// = Initialization and termination methods.
TAO_Naming_Context (TAO_Naming_Context_Impl *impl);
// Constructor. Initializes <impl_> with a concrete implementation.
~TAO_Naming_Context (void);
// Destructor.
// = CosNaming::NamingContext idl interface methods.
virtual void bind (const CosNaming::Name &n,
CORBA::Object_ptr obj,
CORBA::Environment &ACE_TRY_ENV =
TAO_default_environment ())
ACE_THROW_SPEC ((CORBA::SystemException,
CosNaming::NamingContext::NotFound,
CosNaming::NamingContext::CannotProceed,
CosNaming::NamingContext::InvalidName,
CosNaming::NamingContext::AlreadyBound));
// Create a binding for name <n> and object <obj> in the naming
// context. Compound names are treated as follows: ctx->bind (<c1;
// c2; c3; cn>, obj) = (ctx->resolve (<c1; c2; cn-1>))->bind (<cn>,
// obj) if the there already exists a binding for the specified
// name, <AlreadyBound> exception is thrown. Naming contexts should
// be bound using <bind_context> and <rebind_context> in order to
// participate in name resolution later.
virtual void rebind (const CosNaming::Name &n,
CORBA::Object_ptr obj,
CORBA::Environment &ACE_TRY_ENV =
TAO_default_environment ())
ACE_THROW_SPEC ((CORBA::SystemException,
CosNaming::NamingContext::NotFound,
CosNaming::NamingContext::CannotProceed,
CosNaming::NamingContext::InvalidName));
// This is similar to <bind> operation above, except for when the
// binding for the specified name already exists in the specified
// context. In that case, the existing binding is replaced with the
// new one.
virtual void bind_context (const CosNaming::Name &n,
CosNaming::NamingContext_ptr nc,
CORBA::Environment &ACE_TRY_ENV =
TAO_default_environment ())
ACE_THROW_SPEC ((CORBA::SystemException,
CosNaming::NamingContext::NotFound,
CosNaming::NamingContext::CannotProceed,
CosNaming::NamingContext::InvalidName,
CosNaming::NamingContext::AlreadyBound));
// This is the version of <bind> specifically for binding naming
// contexts, so that they will participate in name resolution when
// compound names are passed to be resolved.
virtual void rebind_context (const CosNaming::Name &n,
CosNaming::NamingContext_ptr nc,
CORBA::Environment &ACE_TRY_ENV =
TAO_default_environment ())
ACE_THROW_SPEC ((CORBA::SystemException,
CosNaming::NamingContext::NotFound,
CosNaming::NamingContext::CannotProceed,
CosNaming::NamingContext::InvalidName));
// This is a version of <rebind> specifically for naming contexts,
// so that they can participate in name resolution when compound
// names are passed.
virtual CORBA::Object_ptr resolve (const CosNaming::Name &n,
CORBA::Environment &ACE_TRY_ENV =
TAO_default_environment ())
ACE_THROW_SPEC ((CORBA::SystemException,
CosNaming::NamingContext::NotFound,
CosNaming::NamingContext::CannotProceed,
CosNaming::NamingContext::InvalidName));
// Return object reference that is bound to the name. Compound name
// resolve is defined as follows: ctx->resolve (<c1; c2; cn>) =
// ctx->resolve (<c1; c2 cn-1>)->resolve (<cn>) The naming service
// does not return the type of the object. Clients are responsible
// for "narrowing" the object to the appropriate type.
virtual void unbind (const CosNaming::Name &n,
CORBA::Environment &ACE_TRY_ENV =
TAO_default_environment ())
ACE_THROW_SPEC ((CORBA::SystemException,
CosNaming::NamingContext::NotFound,
CosNaming::NamingContext::CannotProceed,
CosNaming::NamingContext::InvalidName));
// Remove the name binding from the context. When compound names
// are used, unbind is defined as follows: ctx->unbind (<c1; c2;
// cn>) = (ctx->resolve (<c1; c2; cn-1>))->unbind (<cn>)
virtual CosNaming::NamingContext_ptr new_context (
CORBA::Environment &ACE_TRY_ENV =
TAO_default_environment ())
ACE_THROW_SPEC ((CORBA::SystemException));
// This operation returns a new naming context implemented by the
// same naming server in which the operation was invoked. The
// context is not bound.
virtual CosNaming::NamingContext_ptr bind_new_context (
const CosNaming::Name &n,
CORBA::Environment &ACE_TRY_ENV =
TAO_default_environment ())
ACE_THROW_SPEC ((CORBA::SystemException,
CosNaming::NamingContext::NotFound,
CosNaming::NamingContext::AlreadyBound,
CosNaming::NamingContext::CannotProceed,
CosNaming::NamingContext::InvalidName));
// This operation creates a new context and binds it to the name
// supplied as an argument. The newly-created context is
// implemented by the same server as the context in which it was
// bound (the name argument excluding the last component).
virtual void destroy (CORBA::Environment &ACE_TRY_ENV =
TAO_default_environment ())
ACE_THROW_SPEC ((CORBA::SystemException,
CosNaming::NamingContext::NotEmpty));
// Delete the naming context. The user should take care to <unbind> any
// bindings in which the given context is bound to some names, to
// avoid dangling references when invoking <destroy> operation.
// NOTE: <destory> is a no-op on the root context.
// NOTE: after <destroy> is invoked on a Naming Context, all
// BindingIterators associated with that Naming Context are also destroyed.
virtual void list (CORBA::ULong how_many,
CosNaming::BindingList_out bl,
CosNaming::BindingIterator_out bi,
CORBA::Environment &ACE_TRY_ENV =
TAO_default_environment ())
ACE_THROW_SPEC ((CORBA::SystemException));
// Returns at most the requested number of bindings <how_many> in
// <bl>. If the naming context contains additional bindings, they
// are returned with a BindingIterator. In the naming context does
// not contain any additional bindings <bi> returned as null.
virtual PortableServer::POA_ptr _default_POA (CORBA::Environment &env = TAO_default_environment ());
// Returns the Default POA of this Servant object
protected:
TAO_Naming_Context_Impl *impl_;
// A concrete implementor of the NamingContext functions.
};
class TAO_ORBSVCS_Export TAO_Naming_Context_Impl
{
// = TITLE
// This abstract base class plays a role of the 'Implementor' in the Bridge
// pattern architecture of the NamingContext implementation.
//
// = DESCRIPTION
// Subclasses of TAO_Naming_Context_Impl provide concrete
// implementations of the NamingContext functionality.
public:
virtual ~TAO_Naming_Context_Impl (void);
// Destructor.
// = CosNaming::NamingContext idl interface methods.
virtual void bind (const CosNaming::Name &n,
CORBA::Object_ptr obj,
CORBA::Environment &ACE_TRY_ENV) = 0;
// Create a binding for name <n> and object <obj> in the naming
// context. Compound names are treated as follows: ctx->bind (<c1;
// c2; c3; cn>, obj) = (ctx->resolve (<c1; c2; cn-1>))->bind (<cn>,
// obj) if the there already exists a binding for the specified
// name, <AlreadyBound> exception is thrown. Naming contexts should
// be bound using <bind_context> and <rebind_context> in order to
// participate in name resolution later.
virtual void rebind (const CosNaming::Name &n,
CORBA::Object_ptr obj,
CORBA::Environment &ACE_TRY_ENV) = 0;
// This is similar to <bind> operation above, except for when the
// binding for the specified name already exists in the specified
// context. In that case, the existing binding is replaced with the
// new one.
virtual void bind_context (const CosNaming::Name &n,
CosNaming::NamingContext_ptr nc,
CORBA::Environment &ACE_TRY_ENV) = 0;
// This is the version of <bind> specifically for binding naming
// contexts, so that they will participate in name resolution when
// compound names are passed to be resolved.
virtual void rebind_context (const CosNaming::Name &n,
CosNaming::NamingContext_ptr nc,
CORBA::Environment &ACE_TRY_ENV) = 0;
// This is a version of <rebind> specifically for naming contexts,
// so that they can participate in name resolution when compound
// names are passed.
virtual CORBA::Object_ptr resolve (const CosNaming::Name &n,
CORBA::Environment &ACE_TRY_ENV) = 0;
// Return object reference that is bound to the name. Compound name
// resolve is defined as follows: ctx->resolve (<c1; c2; cn>) =
// ctx->resolve (<c1; c2 cn-1>)->resolve (<cn>) The naming service
// does not return the type of the object. Clients are responsible
// for "narrowing" the object to the appropriate type.
virtual void unbind (const CosNaming::Name &n,
CORBA::Environment &ACE_TRY_ENV) = 0;
// Remove the name binding from the context. When compound names
// are used, unbind is defined as follows: ctx->unbind (<c1; c2;
// cn>) = (ctx->resolve (<c1; c2; cn-1>))->unbind (<cn>)
virtual CosNaming::NamingContext_ptr new_context (CORBA::Environment
&ACE_TRY_ENV) = 0;
// This operation returns a new naming context implemented by the
// same naming server in which the operation was invoked. The
// context is not bound.
virtual CosNaming::NamingContext_ptr bind_new_context (const CosNaming::Name &n,
CORBA::Environment &ACE_TRY_ENV) = 0;
// This operation creates a new context and binds it to the name
// supplied as an argument. The newly-created context is
// implemented by the same server as the context in which it was
// bound (the name argument excluding the last component).
virtual void destroy (CORBA::Environment &ACE_TRY_ENV) = 0;
// Delete the naming context. The user should take care to <unbind> any
// bindings in which the given context is bound to some names, to
// avoid dangling references when invoking <destroy> operation.
// NOTE: <destory> is a no-op on the root context.
// NOTE: after <destroy> is invoked on a Naming Context, all
// BindingIterators associated with that Naming Context are also destroyed.
virtual void list (CORBA::ULong how_many,
CosNaming::BindingList_out &bl,
CosNaming::BindingIterator_out &bi,
CORBA::Environment &ACE_TRY_ENV) = 0;
// Returns at most the requested number of bindings <how_many> in
// <bl>. If the naming context contains additional bindings, they
// are returned with a BindingIterator. In the naming context does
// not contain any additional bindings <bi> returned as null.
virtual PortableServer::POA_ptr _default_POA (void) = 0;
// Returns the Default POA of this Servant object
};
#endif /* TAO_NAMING_CONTEXT_H */
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