dbaccess/source/core/misc/apitools.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
  21 #include "apitools.hxx"
  22 #include "dbastrings.hrc"
  23 #include <cppuhelper/typeprovider.hxx>
  24 #include <com/sun/star/lang/XServiceInfo.hpp>
  25 #include <osl/diagnose.h>
  26 #include <tools/debug.hxx>
  27
  28 using namespace ::com::sun::star::uno;
  29 using namespace ::com::sun::star::lang;
  30 using namespace cppu;
  31 using namespace osl;
  32 using namespace dbaccess;
  33
  34 //==================================================================================
  35 //= various helper functions
  36 //==================================================================================
  37 //============================================================
  38 //= OSubComponent
  39 //============================================================
  40 DBG_NAME(OSubComponent)
  41 //--------------------------------------------------------------------------
  42 OSubComponent::OSubComponent(Mutex& _rMutex, const Reference< XInterface > & xParent)
  43               :OComponentHelper(_rMutex)
  44               ,m_xParent(xParent)
  45 {
  46     DBG_CTOR(OSubComponent,NULL);
  47
  48 }
  49 // -----------------------------------------------------------------------------
  50 OSubComponent::~OSubComponent()
  51 {
  52     m_xParent = NULL;
  53
  54     DBG_DTOR(OSubComponent,NULL);
  55 }
  56
  57 // com::sun::star::lang::XTypeProvider
  58 //--------------------------------------------------------------------------
  59 Sequence< Type > OSubComponent::getTypes() throw (RuntimeException)
  60 {
  61     OTypeCollection aTypes(::getCppuType( (const Reference< XComponent > *)0 ),
  62                            ::getCppuType( (const Reference< XTypeProvider > *)0 ),
  63                            ::getCppuType( (const Reference< XWeak > *)0 ));
  64
  65     return aTypes.getTypes();
  66 }
  67
  68 // XInterface
  69 //--------------------------------------------------------------------------
  70 void OSubComponent::acquire() throw ( )
  71 {
  72     OComponentHelper::acquire();
  73 }
  74
  75 //--------------------------------------------------------------------------
  76 void OSubComponent::release() throw ( )
  77 {
  78     Reference< XInterface > x( xDelegator );
  79     if (! x.is())
  80     {
  81         if (osl_atomic_decrement( &m_refCount ) == 0 )
  82         {
  83             if (! rBHelper.bDisposed)
  84             {
  85                 // *before* again incrementing our ref count, ensure that our weak connection point
  86                 // will not create references to us anymore (via XAdapter::queryAdapted)
  87                 disposeWeakConnectionPoint();
  88
  89                 Reference< XInterface > xHoldAlive( *this );
  90                 // remember the parent
  91                 Reference< XInterface > xParent;
  92                 {
  93                     MutexGuard aGuard( rBHelper.rMutex );
  94                     xParent = m_xParent;
  95                     m_xParent = NULL;
  96                 }
  97
  98                 OSL_ENSURE( m_refCount == 1, "OSubComponent::release: invalid ref count (before dispose)!" );
  99
 100                 // First dispose
 101                 dispose();
 102
 103                 // only the alive ref holds the object
 104                 OSL_ENSURE( m_refCount == 1, "OSubComponent::release: invalid ref count (after dispose)!" );
 105
 106                 // release the parent in the ~
 107                 if (xParent.is())
 108                 {
 109                     MutexGuard aGuard( rBHelper.rMutex );
 110                     m_xParent = xParent;
 111                 }
 112
 113                 // destroy the object if xHoldAlive decrement the refcount to 0
 114                 return;
 115             }
 116         }
 117         // restore the reference count
 118         osl_atomic_increment( &m_refCount );
 119     }
 120
 121     // as we cover the job of the componenthelper we use the ...
 122     OWeakAggObject::release();
 123 }
 124
 125 //--------------------------------------------------------------------------
 126 Any OSubComponent::queryInterface( const Type & rType ) throw(RuntimeException)
 127 {
 128     Any aReturn;
 129     if (!rType.equals(::getCppuType(static_cast< Reference< XAggregation >* >(NULL))))
 130         aReturn = OComponentHelper::queryInterface(rType);
 131
 132     return aReturn;
 133 }
 134
 135
 136 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */