dbaccess/source/shared/registrationhelper.cxx

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
   2 /*
   3  * This file is part of the LibreOffice project.
   4  *
   5  * This Source Code Form is subject to the terms of the Mozilla Public
   6  * License, v. 2.0. If a copy of the MPL was not distributed with this
   7  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
   8  *
   9  * This file incorporates work covered by the following license notice:
  10  *
  11  *   Licensed to the Apache Software Foundation (ASF) under one or more
  12  *   contributor license agreements. See the NOTICE file distributed
  13  *   with this work for additional information regarding copyright
  14  *   ownership. The ASF licenses this file to you under the Apache
  15  *   License, Version 2.0 (the "License"); you may not use this file
  16  *   except in compliance with the License. You may obtain a copy of
  17  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
  18  */
  19
  20 // be included in other cxx files
  21
  22 #ifndef _REGISTRATIONHELPER_CXX_INCLUDED_INDIRECTLY_
  23 #error "don't build this file directly! use dbu_reghelper.cxx instead!"
  24 #endif
  25
  26 using namespace ::com::sun::star;
  27 using namespace ::comphelper;
  28 using namespace ::cppu;
  29
  30 uno::Sequence< OUString >*                   OModuleRegistration::s_pImplementationNames = NULL;
  31 uno::Sequence< uno::Sequence< OUString > >*  OModuleRegistration::s_pSupportedServices = NULL;
  32 uno::Sequence< sal_Int64 >*                 OModuleRegistration::s_pCreationFunctionPointers = NULL;
  33 uno::Sequence< sal_Int64 >*                 OModuleRegistration::s_pFactoryFunctionPointers = NULL;
  34
  35 void OModuleRegistration::registerComponent(
  36     const OUString& _rImplementationName,
  37     const uno::Sequence< OUString >& _rServiceNames,
  38     ComponentInstantiation _pCreateFunction,
  39     FactoryInstantiation _pFactoryFunction)
  40 {
  41     if (!s_pImplementationNames)
  42     {
  43         OSL_ENSURE(!s_pSupportedServices && !s_pCreationFunctionPointers && !s_pFactoryFunctionPointers,
  44             "OModuleRegistration::registerComponent : inconsistent state (the pointers (1)) !");
  45         s_pImplementationNames = new uno::Sequence< OUString >;
  46         s_pSupportedServices = new uno::Sequence< uno::Sequence< OUString > >;
  47         s_pCreationFunctionPointers = new uno::Sequence< sal_Int64 >;
  48         s_pFactoryFunctionPointers = new uno::Sequence< sal_Int64 >;
  49     }
  50     OSL_ENSURE(s_pImplementationNames && s_pSupportedServices && s_pCreationFunctionPointers && s_pFactoryFunctionPointers,
  51         "OModuleRegistration::registerComponent : inconsistent state (the pointers (2)) !");
  52
  53     OSL_ENSURE( (s_pImplementationNames->getLength() == s_pSupportedServices->getLength())
  54                 &&  (s_pImplementationNames->getLength() == s_pCreationFunctionPointers->getLength())
  55                 &&  (s_pImplementationNames->getLength() == s_pFactoryFunctionPointers->getLength()),
  56         "OModuleRegistration::registerComponent : inconsistent state !");
  57
  58     sal_Int32 nOldLen = s_pImplementationNames->getLength();
  59     s_pImplementationNames->realloc(nOldLen + 1);
  60     s_pSupportedServices->realloc(nOldLen + 1);
  61     s_pCreationFunctionPointers->realloc(nOldLen + 1);
  62     s_pFactoryFunctionPointers->realloc(nOldLen + 1);
  63
  64     s_pImplementationNames->getArray()[nOldLen] = _rImplementationName;
  65     s_pSupportedServices->getArray()[nOldLen] = _rServiceNames;
  66     s_pCreationFunctionPointers->getArray()[nOldLen] = reinterpret_cast<sal_Int64>(_pCreateFunction);
  67     s_pFactoryFunctionPointers->getArray()[nOldLen] = reinterpret_cast<sal_Int64>(_pFactoryFunction);
  68 }
  69
  70 void OModuleRegistration::revokeComponent(const OUString& _rImplementationName)
  71 {
  72     if (!s_pImplementationNames)
  73     {
  74         OSL_FAIL("OModuleRegistration::revokeComponent : have no class infos ! Are you sure called this method at the right time ?");
  75         return;
  76     }
  77     OSL_ENSURE(s_pImplementationNames && s_pSupportedServices && s_pCreationFunctionPointers && s_pFactoryFunctionPointers,
  78         "OModuleRegistration::revokeComponent : inconsistent state (the pointers) !");
  79     OSL_ENSURE( (s_pImplementationNames->getLength() == s_pSupportedServices->getLength())
  80                 &&  (s_pImplementationNames->getLength() == s_pCreationFunctionPointers->getLength())
  81                 &&  (s_pImplementationNames->getLength() == s_pFactoryFunctionPointers->getLength()),
  82         "OModuleRegistration::revokeComponent : inconsistent state !");
  83
  84     sal_Int32 nLen = s_pImplementationNames->getLength();
  85     const OUString* pImplNames = s_pImplementationNames->getConstArray();
  86     for (sal_Int32 i=0; i<nLen; ++i, ++pImplNames)
  87     {
  88         if (pImplNames->equals(_rImplementationName))
  89         {
  90             removeElementAt(*s_pImplementationNames, i);
  91             removeElementAt(*s_pSupportedServices, i);
  92             removeElementAt(*s_pCreationFunctionPointers, i);
  93             removeElementAt(*s_pFactoryFunctionPointers, i);
  94             break;
  95         }
  96     }
  97
  98     if (s_pImplementationNames->getLength() == 0)
  99     {
 100         delete s_pImplementationNames; s_pImplementationNames = NULL;
 101         delete s_pSupportedServices; s_pSupportedServices = NULL;
 102         delete s_pCreationFunctionPointers; s_pCreationFunctionPointers = NULL;
 103         delete s_pFactoryFunctionPointers; s_pFactoryFunctionPointers = NULL;
 104     }
 105 }
 106
 107 uno::Reference< uno::XInterface > OModuleRegistration::getComponentFactory(
 108     const OUString& _rImplementationName,
 109     const uno::Reference< lang::XMultiServiceFactory >& _rxServiceManager)
 110 {
 111     OSL_ENSURE(_rxServiceManager.is(), "OModuleRegistration::getComponentFactory : invalid argument (service manager) !");
 112     OSL_ENSURE(!_rImplementationName.isEmpty(), "OModuleRegistration::getComponentFactory : invalid argument (implementation name) !");
 113
 114     if (!s_pImplementationNames)
 115     {
 116         OSL_FAIL("OModuleRegistration::getComponentFactory : have no class infos ! Are you sure called this method at the right time ?");
 117         return NULL;
 118     }
 119     OSL_ENSURE(s_pImplementationNames && s_pSupportedServices && s_pCreationFunctionPointers && s_pFactoryFunctionPointers,
 120         "OModuleRegistration::getComponentFactory : inconsistent state (the pointers) !");
 121     OSL_ENSURE( (s_pImplementationNames->getLength() == s_pSupportedServices->getLength())
 122                 &&  (s_pImplementationNames->getLength() == s_pCreationFunctionPointers->getLength())
 123                 &&  (s_pImplementationNames->getLength() == s_pFactoryFunctionPointers->getLength()),
 124         "OModuleRegistration::getComponentFactory : inconsistent state !");
 125
 126     uno::Reference< uno::XInterface > xReturn;
 127
 128     sal_Int32 nLen = s_pImplementationNames->getLength();
 129     const OUString* pImplName = s_pImplementationNames->getConstArray();
 130     const uno::Sequence< OUString >* pServices = s_pSupportedServices->getConstArray();
 131     const sal_Int64* pComponentFunction = s_pCreationFunctionPointers->getConstArray();
 132     const sal_Int64* pFactoryFunction = s_pFactoryFunctionPointers->getConstArray();
 133
 134     for (sal_Int32 i=0; i<nLen; ++i, ++pImplName, ++pServices, ++pComponentFunction, ++pFactoryFunction)
 135     {
 136         if (pImplName->equals(_rImplementationName))
 137         {
 138             const FactoryInstantiation FactoryInstantiationFunction = reinterpret_cast<const FactoryInstantiation>(*pFactoryFunction);
 139             const ComponentInstantiation ComponentInstantiationFunction = reinterpret_cast<const ComponentInstantiation>(*pComponentFunction);
 140
 141             xReturn = FactoryInstantiationFunction( _rxServiceManager, *pImplName, ComponentInstantiationFunction, *pServices, NULL);
 142             if (xReturn.is())
 143             {
 144                 return xReturn.get();
 145             }
 146         }
 147     }
 148
 149     return NULL;
 150 }
 151
 152 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */