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