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