1*9b5730f6SAndrew Rist /************************************************************** 2cdf0e10cSrcweir * 3*9b5730f6SAndrew Rist * Licensed to the Apache Software Foundation (ASF) under one 4*9b5730f6SAndrew Rist * or more contributor license agreements. See the NOTICE file 5*9b5730f6SAndrew Rist * distributed with this work for additional information 6*9b5730f6SAndrew Rist * regarding copyright ownership. The ASF licenses this file 7*9b5730f6SAndrew Rist * to you under the Apache License, Version 2.0 (the 8*9b5730f6SAndrew Rist * "License"); you may not use this file except in compliance 9*9b5730f6SAndrew Rist * with the License. You may obtain a copy of the License at 10*9b5730f6SAndrew Rist * 11*9b5730f6SAndrew Rist * http://www.apache.org/licenses/LICENSE-2.0 12*9b5730f6SAndrew Rist * 13*9b5730f6SAndrew Rist * Unless required by applicable law or agreed to in writing, 14*9b5730f6SAndrew Rist * software distributed under the License is distributed on an 15*9b5730f6SAndrew Rist * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 16*9b5730f6SAndrew Rist * KIND, either express or implied. See the License for the 17*9b5730f6SAndrew Rist * specific language governing permissions and limitations 18*9b5730f6SAndrew Rist * under the License. 19*9b5730f6SAndrew Rist * 20*9b5730f6SAndrew Rist *************************************************************/ 21*9b5730f6SAndrew Rist 22*9b5730f6SAndrew Rist 23cdf0e10cSrcweir 24cdf0e10cSrcweir // MARKER(update_precomp.py): autogen include statement, do not remove 25cdf0e10cSrcweir #include "precompiled_connectivity.hxx" 26cdf0e10cSrcweir #include <connectivity/conncleanup.hxx> 27cdf0e10cSrcweir #include <com/sun/star/beans/XPropertySet.hpp> 28cdf0e10cSrcweir #include <com/sun/star/lang/XComponent.hpp> 29cdf0e10cSrcweir #include <osl/diagnose.h> 30cdf0e10cSrcweir 31cdf0e10cSrcweir //......................................................................... 32cdf0e10cSrcweir namespace dbtools 33cdf0e10cSrcweir { 34cdf0e10cSrcweir //......................................................................... 35cdf0e10cSrcweir 36cdf0e10cSrcweir using namespace ::com::sun::star::uno; 37cdf0e10cSrcweir using namespace ::com::sun::star::beans; 38cdf0e10cSrcweir using namespace ::com::sun::star::sdbc; 39cdf0e10cSrcweir using namespace ::com::sun::star::lang; 40cdf0e10cSrcweir 41cdf0e10cSrcweir //===================================================================== getActiveConnectionPropertyName()42cdf0e10cSrcweir static const ::rtl::OUString& getActiveConnectionPropertyName() 43cdf0e10cSrcweir { 44cdf0e10cSrcweir static const ::rtl::OUString s_sActiveConnectionPropertyName = ::rtl::OUString::createFromAscii("ActiveConnection"); 45cdf0e10cSrcweir return s_sActiveConnectionPropertyName; 46cdf0e10cSrcweir } 47cdf0e10cSrcweir 48cdf0e10cSrcweir //===================================================================== 49cdf0e10cSrcweir //= OAutoConnectionDisposer 50cdf0e10cSrcweir //===================================================================== 51cdf0e10cSrcweir //--------------------------------------------------------------------- OAutoConnectionDisposer(const Reference<XRowSet> & _rxRowSet,const Reference<XConnection> & _rxConnection)52cdf0e10cSrcweir OAutoConnectionDisposer::OAutoConnectionDisposer(const Reference< XRowSet >& _rxRowSet, const Reference< XConnection >& _rxConnection) 53cdf0e10cSrcweir :m_xRowSet( _rxRowSet ) 54cdf0e10cSrcweir ,m_bRSListening( sal_False ) 55cdf0e10cSrcweir ,m_bPropertyListening( sal_False ) 56cdf0e10cSrcweir { 57cdf0e10cSrcweir Reference< XPropertySet > xProps(_rxRowSet, UNO_QUERY); 58cdf0e10cSrcweir OSL_ENSURE(xProps.is(), "OAutoConnectionDisposer::OAutoConnectionDisposer: invalid rowset (no XPropertySet)!"); 59cdf0e10cSrcweir 60cdf0e10cSrcweir if (!xProps.is()) 61cdf0e10cSrcweir return; 62cdf0e10cSrcweir 63cdf0e10cSrcweir try 64cdf0e10cSrcweir { 65cdf0e10cSrcweir xProps->setPropertyValue( getActiveConnectionPropertyName(), makeAny( _rxConnection ) ); 66cdf0e10cSrcweir m_xOriginalConnection = _rxConnection; 67cdf0e10cSrcweir startPropertyListening( xProps ); 68cdf0e10cSrcweir } 69cdf0e10cSrcweir catch( const Exception& ) 70cdf0e10cSrcweir { 71cdf0e10cSrcweir OSL_ENSURE( sal_False, "OAutoConnectionDisposer::OAutoConnectionDisposer: caught an exception!" ); 72cdf0e10cSrcweir } 73cdf0e10cSrcweir } 74cdf0e10cSrcweir 75cdf0e10cSrcweir //--------------------------------------------------------------------- startPropertyListening(const Reference<XPropertySet> & _rxRowSet)76cdf0e10cSrcweir void OAutoConnectionDisposer::startPropertyListening( const Reference< XPropertySet >& _rxRowSet ) 77cdf0e10cSrcweir { 78cdf0e10cSrcweir try 79cdf0e10cSrcweir { 80cdf0e10cSrcweir _rxRowSet->addPropertyChangeListener( getActiveConnectionPropertyName(), this ); 81cdf0e10cSrcweir m_bPropertyListening = sal_True; 82cdf0e10cSrcweir } 83cdf0e10cSrcweir catch( const Exception& ) 84cdf0e10cSrcweir { 85cdf0e10cSrcweir OSL_ENSURE( sal_False, "OAutoConnectionDisposer::startPropertyListening: caught an exception!" ); 86cdf0e10cSrcweir } 87cdf0e10cSrcweir } 88cdf0e10cSrcweir 89cdf0e10cSrcweir //--------------------------------------------------------------------- stopPropertyListening(const Reference<XPropertySet> & _rxEventSource)90cdf0e10cSrcweir void OAutoConnectionDisposer::stopPropertyListening( const Reference< XPropertySet >& _rxEventSource ) 91cdf0e10cSrcweir { 92cdf0e10cSrcweir // prevent deletion of ourself while we're herein 93cdf0e10cSrcweir Reference< XInterface > xKeepAlive(static_cast< XWeak* >(this)); 94cdf0e10cSrcweir 95cdf0e10cSrcweir try 96cdf0e10cSrcweir { // remove ourself as property change listener 97cdf0e10cSrcweir OSL_ENSURE( _rxEventSource.is(), "OAutoConnectionDisposer::stopPropertyListening: invalid event source (no XPropertySet)!" ); 98cdf0e10cSrcweir if ( _rxEventSource.is() ) 99cdf0e10cSrcweir { 100cdf0e10cSrcweir _rxEventSource->removePropertyChangeListener( getActiveConnectionPropertyName(), this ); 101cdf0e10cSrcweir m_bPropertyListening = sal_False; 102cdf0e10cSrcweir } 103cdf0e10cSrcweir } 104cdf0e10cSrcweir catch( const Exception& ) 105cdf0e10cSrcweir { 106cdf0e10cSrcweir OSL_ENSURE( sal_False, "OAutoConnectionDisposer::stopPropertyListening: caught an exception!" ); 107cdf0e10cSrcweir } 108cdf0e10cSrcweir } 109cdf0e10cSrcweir 110cdf0e10cSrcweir //--------------------------------------------------------------------- startRowSetListening()111cdf0e10cSrcweir void OAutoConnectionDisposer::startRowSetListening() 112cdf0e10cSrcweir { 113cdf0e10cSrcweir OSL_ENSURE( !m_bRSListening, "OAutoConnectionDisposer::startRowSetListening: already listening!" ); 114cdf0e10cSrcweir try 115cdf0e10cSrcweir { 116cdf0e10cSrcweir if ( !m_bRSListening ) 117cdf0e10cSrcweir m_xRowSet->addRowSetListener( this ); 118cdf0e10cSrcweir } 119cdf0e10cSrcweir catch( const Exception& ) 120cdf0e10cSrcweir { 121cdf0e10cSrcweir OSL_ENSURE( sal_False, "OAutoConnectionDisposer::startRowSetListening: caught an exception!" ); 122cdf0e10cSrcweir } 123cdf0e10cSrcweir m_bRSListening = sal_True; 124cdf0e10cSrcweir } 125cdf0e10cSrcweir 126cdf0e10cSrcweir //--------------------------------------------------------------------- stopRowSetListening()127cdf0e10cSrcweir void OAutoConnectionDisposer::stopRowSetListening() 128cdf0e10cSrcweir { 129cdf0e10cSrcweir OSL_ENSURE( m_bRSListening, "OAutoConnectionDisposer::stopRowSetListening: not listening!" ); 130cdf0e10cSrcweir try 131cdf0e10cSrcweir { 132cdf0e10cSrcweir m_xRowSet->removeRowSetListener( this ); 133cdf0e10cSrcweir } 134cdf0e10cSrcweir catch( const Exception& ) 135cdf0e10cSrcweir { 136cdf0e10cSrcweir OSL_ENSURE( sal_False, "OAutoConnectionDisposer::stopRowSetListening: caught an exception!" ); 137cdf0e10cSrcweir } 138cdf0e10cSrcweir m_bRSListening = sal_False; 139cdf0e10cSrcweir } 140cdf0e10cSrcweir 141cdf0e10cSrcweir //--------------------------------------------------------------------- propertyChange(const PropertyChangeEvent & _rEvent)142cdf0e10cSrcweir void SAL_CALL OAutoConnectionDisposer::propertyChange( const PropertyChangeEvent& _rEvent ) throw (RuntimeException) 143cdf0e10cSrcweir { 144cdf0e10cSrcweir if ( _rEvent.PropertyName.equals( getActiveConnectionPropertyName() ) ) 145cdf0e10cSrcweir { // somebody set a new ActiveConnection 146cdf0e10cSrcweir 147cdf0e10cSrcweir Reference< XConnection > xNewConnection; 148cdf0e10cSrcweir _rEvent.NewValue >>= xNewConnection; 149cdf0e10cSrcweir 150cdf0e10cSrcweir if ( isRowSetListening() ) 151cdf0e10cSrcweir { 152cdf0e10cSrcweir // we're listening at the row set, this means that the row set does not have our 153cdf0e10cSrcweir // m_xOriginalConnection as active connection anymore 154cdf0e10cSrcweir // So there are two possibilities 155cdf0e10cSrcweir // a. somebody sets a new connection which is not our original one 156cdf0e10cSrcweir // b. somebody sets a new connection, which is exactly the original one 157cdf0e10cSrcweir // a. we're not interested in a, but in b: In this case, we simply need to move to the state 158cdf0e10cSrcweir // we had originally: listen for property changes, do not listen for row set changes, and 159cdf0e10cSrcweir // do not dispose the connection until the row set does not need it anymore 160cdf0e10cSrcweir if ( xNewConnection.get() == m_xOriginalConnection.get() ) 161cdf0e10cSrcweir { 162cdf0e10cSrcweir stopRowSetListening(); 163cdf0e10cSrcweir } 164cdf0e10cSrcweir } 165cdf0e10cSrcweir else 166cdf0e10cSrcweir { 167cdf0e10cSrcweir // start listening at the row set. We're allowed to dispose the old connection as soon 168cdf0e10cSrcweir // as the RowSet changed 169cdf0e10cSrcweir 170cdf0e10cSrcweir // Unfortunately, the our database form implementations sometimes fire the change of their 171cdf0e10cSrcweir // ActiveConnection twice. This is a error in forms/source/component/DatabaseForm.cxx, but 172cdf0e10cSrcweir // changing this would require incompatible changes we can't do for a while. 173cdf0e10cSrcweir // So for the moment, we have to live with it here. 174cdf0e10cSrcweir // 175cdf0e10cSrcweir // The only scenario where this doubled notification causes problems is when the connection 176cdf0e10cSrcweir // of the form is reset to the one we're responsible for (m_xOriginalConnection), so we 177cdf0e10cSrcweir // check this here. 178cdf0e10cSrcweir // 179cdf0e10cSrcweir // Yes, this is a HACK :( 180cdf0e10cSrcweir // 181cdf0e10cSrcweir // 94407 - 08.11.2001 - fs@openoffice.org 182cdf0e10cSrcweir if ( xNewConnection.get() != m_xOriginalConnection.get() ) 183cdf0e10cSrcweir { 184cdf0e10cSrcweir #if OSL_DEBUG_LEVEL > 0 185cdf0e10cSrcweir Reference< XConnection > xOldConnection; 186cdf0e10cSrcweir _rEvent.OldValue >>= xOldConnection; 187cdf0e10cSrcweir OSL_ENSURE( xOldConnection.get() == m_xOriginalConnection.get(), "OAutoConnectionDisposer::propertyChange: unexpected (original) property value!" ); 188cdf0e10cSrcweir #endif 189cdf0e10cSrcweir startRowSetListening(); 190cdf0e10cSrcweir } 191cdf0e10cSrcweir } 192cdf0e10cSrcweir } 193cdf0e10cSrcweir } 194cdf0e10cSrcweir 195cdf0e10cSrcweir //--------------------------------------------------------------------- disposing(const EventObject & _rSource)196cdf0e10cSrcweir void SAL_CALL OAutoConnectionDisposer::disposing( const EventObject& _rSource ) throw (RuntimeException) 197cdf0e10cSrcweir { 198cdf0e10cSrcweir // the rowset is beeing disposed, and nobody has set a new ActiveConnection in the meantime 199cdf0e10cSrcweir if ( isRowSetListening() ) 200cdf0e10cSrcweir stopRowSetListening(); 201cdf0e10cSrcweir 202cdf0e10cSrcweir clearConnection(); 203cdf0e10cSrcweir 204cdf0e10cSrcweir if ( isPropertyListening() ) 205cdf0e10cSrcweir stopPropertyListening( Reference< XPropertySet >( _rSource.Source, UNO_QUERY ) ); 206cdf0e10cSrcweir } 207cdf0e10cSrcweir //--------------------------------------------------------------------- clearConnection()208cdf0e10cSrcweir void OAutoConnectionDisposer::clearConnection() 209cdf0e10cSrcweir { 210cdf0e10cSrcweir try 211cdf0e10cSrcweir { 212cdf0e10cSrcweir // dispose the old connection 213cdf0e10cSrcweir Reference< XComponent > xComp(m_xOriginalConnection, UNO_QUERY); 214cdf0e10cSrcweir if (xComp.is()) 215cdf0e10cSrcweir xComp->dispose(); 216cdf0e10cSrcweir m_xOriginalConnection.clear(); 217cdf0e10cSrcweir } 218cdf0e10cSrcweir catch(Exception&) 219cdf0e10cSrcweir { 220cdf0e10cSrcweir OSL_ENSURE(sal_False, "OAutoConnectionDisposer::clearConnection: caught an exception!"); 221cdf0e10cSrcweir } 222cdf0e10cSrcweir } 223cdf0e10cSrcweir //--------------------------------------------------------------------- cursorMoved(const::com::sun::star::lang::EventObject &)224cdf0e10cSrcweir void SAL_CALL OAutoConnectionDisposer::cursorMoved( const ::com::sun::star::lang::EventObject& /*event*/ ) throw (::com::sun::star::uno::RuntimeException) 225cdf0e10cSrcweir { 226cdf0e10cSrcweir } 227cdf0e10cSrcweir //--------------------------------------------------------------------- rowChanged(const::com::sun::star::lang::EventObject &)228cdf0e10cSrcweir void SAL_CALL OAutoConnectionDisposer::rowChanged( const ::com::sun::star::lang::EventObject& /*event*/ ) throw (::com::sun::star::uno::RuntimeException) 229cdf0e10cSrcweir { 230cdf0e10cSrcweir } 231cdf0e10cSrcweir //--------------------------------------------------------------------- rowSetChanged(const::com::sun::star::lang::EventObject &)232cdf0e10cSrcweir void SAL_CALL OAutoConnectionDisposer::rowSetChanged( const ::com::sun::star::lang::EventObject& /*event*/ ) throw (::com::sun::star::uno::RuntimeException) 233cdf0e10cSrcweir { 234cdf0e10cSrcweir stopRowSetListening(); 235cdf0e10cSrcweir clearConnection(); 236cdf0e10cSrcweir 237cdf0e10cSrcweir } 238cdf0e10cSrcweir //--------------------------------------------------------------------- 239cdf0e10cSrcweir 240cdf0e10cSrcweir //......................................................................... 241cdf0e10cSrcweir } // namespace dbtools 242cdf0e10cSrcweir //......................................................................... 243cdf0e10cSrcweir 244