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1-112 SOMobjects Base Toolkit: Programmer’s Reference Manual
somGetInitFunction Method
Purpose
Obtains the name of the function that initializes the SOM classes in a class library.
IDL Syntax
string somGetInitFunction ( );
Note: For backward compatibility, this method does not take an Environment parameter.
Description
The somGetInitFunction method supplies the name of the initialization function for OS/2
class libraries (DLLs) that contain more than one SOM class. The default implementation
returns the value of the global variable SOMClassInitFuncName, which by default is set to
the value “SOMInitModule”.
For AIX, the name of the class initialization function is not important, since AIX class
libraries should always be constructed as shared libraries with a designated entry point
which can be executed automatically by the loader when the class is loaded. Consequently,
the result of this method is not significant on AIX.
Similarly, if an OS/2 class library (DLL) has been constructed with a DLL initialization
function assigned by the linker, you can choose to invoke the <className>NewClass
functions for all of the classes in the DLL during DLL initialization. In this case (as on AIX),
there is no need to export a “SOMInitModule” function. On the other hand, if your compiler
does not provide a convenient mechanism for creating a DLL initialization function, you can
elect to export a function named “SOMInitModule” (or whatever name is ultimately returned
by the somGetInitFunction method).
The OS/2 SOMClassMgrObject, after loading a class library, will invoke the method
somGetInitFunction to obtain the name of a possible initialization function. If this name has
been exported by the class library just loaded, the SOMClassMgrObject calls this function
to initialize the classes in the library. If the name has not been exported by the DLL, the
SOMClassMgrObject then looks for an exported name of the form
<className>NewClass, where <className> is the name of the class supplied with the
method that caused the DLL to be loaded. If the DLL exports this name, it is invoked to
create the named class.
On Windows, the SOM class manager does not call SOMInitModule. It must be called
from the default Windows DLL initialization function, LibMain. This call is made indirectly
through the SOM_ClassLibrary macro.
Regardless of the technique employed, the SOMClassMgrObject expects that all classes
packaged in a single class library will be created during this sequence.
This method is generally not invoked directly by users. User-defined subclasses of
SOMClassMgr, however, can override this method.
Parameters
receiver Usually SOMClassMgrObject (or a pointer to an instance of a
user-supplied subclass of SOMClassMgr).
Return Value
The somGetInitFunction method returns a string that names the initialization function of
class libraries. By default, this name is the value of the global variable
SOMClassInitFuncName, the default value of which is SOMInitModule.
- Bull DPX/20 1
- About This Book 5
- Contents 7
- SOM Kernel Reference 1-1 13
- C++ Example 15
- SOM Kernel Reference 1-5 17
- SOM Kernel Reference 1-9 21
- ++ language bindings 22
- SOM Kernel Reference 1-13 25
- SOM Kernel Reference 1-15 27
- SOM Kernel Reference 1-17 29
- SOM Kernel Reference 1-19 31
- SOM Kernel Reference 1-25 37
- SOM Kernel Reference 1-27 39
- ++ usage bindings use this 42
- ++ usage 42
- SOM Kernel Reference 1-33 45
- SOM Kernel Reference 1-35 47
- SOM Kernel Reference 1-37 49
- SOMCalloc Function 51
- SOMClassInitFuncName Function 52
- SOMDeleteModule Function 53
- SOMError Function 54
- SOMFree Function 55
- SOMInitModule Function 56
- SOMLoadModule Function 58
- SOMMalloc Function 59
- SOMOutCharRoutine Function 60
- SOMRealloc Function 61
- SOM_Assert Macro 62
- SOM_ClassLibrary Macro 63
- SOM Kernel Reference 1-53 65
- SOM_Error Macro 66
- SOM_Expect Macro 67
- SOM_GetClass Macro 68
- SOM_InitEnvironment Macro 69
- SOM_MainProgram Macro 70
- SOM_NoTrace Macro 71
- SOM_ParentNumResolve Macro 72
- SOM_Resolve Macro 73
- SOM_ResolveNoCheck Macro 74
- SOM_SubstituteClass Macro 75
- SOM_Test Macro 76
- SOM_TestC Macro 77
- SOM_UninitEnvironment Macro 78
- SOM_WarnMsg Macro 79
- SOMClass Class 80
- Introduced Methods 81
- Deprecated Methods 82
- SOM Kernel Reference 1-71 83
- SOM Kernel Reference 1-75 87
- SOM Kernel Reference 1-79 91
- SOM Kernel Reference 1-83 95
- SOM Kernel Reference 1-85 97
- SOM Kernel Reference 1-87 99
- SOM Kernel Reference 1-89 101
- NULL is returned 101
- SOM Kernel Reference 1-91 103
- SOM Kernel Reference 1-93 105
- SOM Kernel Reference 1-95 107
- SOM Kernel Reference 1-97 109
- SOM Kernel Reference 1-99 111
- Related Information 112
- Original Class 112
- SOM Kernel Reference 1-101 113
- IDL Syntax 114
- Description 114
- Parameters 114
- Return Value 114
- SOMClassMgr Class 117
- New Methods 118
- Overridden Methods 118
- SOM Kernel Reference 1-107 119
- Return Values 120
- C Example 121
- SOM Kernel Reference 1-117 129
- SOM Kernel Reference 1-123 135
- SOMObject Class 138
- SOM Kernel Reference 1-139 151
- SOM Kernel Reference 1-143 155
- SOM Kernel Reference 1-145 157
- SOM Kernel Reference 1-153 165
- DSOM Framework Reference 169
- DSOM and CORBA 170
- ORBfree Function 172
- C Syntax 173
- SOMD_Init Function 176
- SOMD_NoORBfree Function 177
- SOMD_Uninit Function 180
- Context_delete Macro 181
- Request_delete Macro 182
- BOA Class 184
- Context Class 196
- ImplementationDef Class 204
- ImplRepository Class 206
- NVList Class 218
- ObjectMgr Class 229
- ORB Class 235
- Principal Class 241
- Request Class 242
- SOMDClientProxy Class 253
- Overridden methods 254
- SOMDObject Class 263
- SOMDObjectMgr Class 276
- SOMDServer Class 281
- SOMDServerMgr Class 289
- _ServerDisabled or 293
- SOMOA Class 297
- _NoMessages is returned as 304
- AttributeDef Class 308
- Overriding Methods 309
- ConstantDef Class 310
- Contained Class 312
- Container Class 318
- ExceptionDef Class 325
- InterfaceDef Class 327
- Attributes 328
- ModuleDef Class 331
- OperationDef Class 332
- ParameterDef Class 334
- Repository Class 336
- TypeDef Class 342
- TypeCode_alignment Function 343
- TypeCode_copy Function 344
- TypeCode_equal Function 345
- TypeCode_free Function 346
- TypeCode_kind Function 347
- TypeCodeNew Function 350
- TypeCode_param_count Function 352
- TypeCode_parameter Function 353
- TypeCode_print Function 355
- TypeCode_size Function 357
- SOMMBeforeAfter Metaclass 360
- SOMMSingleInstance Metaclass 365
- ++, or the somNew method 366
- SOMMTraced Metaclass 367
- SOMEClientEvent Class 370
- SOMEEMan Class 375
- SOMEEMRegisterData Class 391
- SOMEEvent Class 399
- SOMESinkEvent Class 404
- SOMETimerEvent Class 407
- SOMEWorkProcEvent Class 410
- NOM / NAME : Date : 419
- SOCIETE / COMPANY : 419
- ADRESSE / ADDRESS : 419
- 86 A2 28AQ 01 422
- ORDER REFERENCE 422
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