connectivity: firebird: fix Connection leak in OStatementCommonBase

bin/refcount_leak.py was very helpful here.

Change-Id: I61dc57408cf1533f733c08b701884851ec6afb8d

connectivity/source/drivers/firebird/PreparedStatement.cxx

@@ -152,7 +152,7 @@ Reference< XResultSetMetaData > SAL_CALL OPreparedStatement::getMetaData()
     ensurePrepared();
 
     if(!m_xMetaData.is())
-        m_xMetaData = new OResultSetMetaData(m_pConnection, m_pOutSqlda);
+        m_xMetaData = new OResultSetMetaData(m_pConnection.get(), m_pOutSqlda);
 
     return m_xMetaData;
 }
@@ -239,7 +239,7 @@ Reference< XConnection > SAL_CALL OPreparedStatement::getConnection()
     MutexGuard aGuard( m_aMutex );
     checkDisposed(OStatementCommonBase_Base::rBHelper.bDisposed);
 
-    return Reference< XConnection >(m_pConnection);
+    return Reference<XConnection>(m_pConnection.get());
 }
 
 sal_Bool SAL_CALL OPreparedStatement::execute()
@@ -282,7 +282,7 @@ sal_Bool SAL_CALL OPreparedStatement::execute()
         evaluateStatusVector(m_statusVector, "isc_dsql_execute", *this);
     }
 
-    m_xResultSet = new OResultSet(m_pConnection,
+    m_xResultSet = new OResultSet(m_pConnection.get(),
                                   m_aMutex,
                                   uno::Reference< XInterface >(*this),
                                   m_aStatementHandle,

connectivity/source/drivers/firebird/ResultSet.hxx

@@ -79,6 +79,7 @@ namespace connectivity
             sal_Int32 m_nResultSetConcurrency;
 
         protected:
+            // Connection kept alive by m_xStatement
             Connection* m_pConnection;
             ::osl::Mutex& m_rMutex;
             const ::com::sun::star::uno::Reference< ::com::sun::star::uno::XInterface >& m_xStatement;

connectivity/source/drivers/firebird/Statement.cxx

@@ -125,7 +125,7 @@ uno::Reference< XResultSet > SAL_CALL OStatement::executeQuery(const OUString& s
     if (aErr)
         SAL_WARN("connectivity.firebird", "isc_dsql_execute failed");
 
-    m_xResultSet = new OResultSet(m_pConnection,
+    m_xResultSet = new OResultSet(m_pConnection.get(),
                                   m_aMutex,
                                   uno::Reference< XInterface >(*this),
                                   m_aStatementHandle,
@@ -162,7 +162,7 @@ uno::Reference< XConnection > SAL_CALL OStatement::getConnection()
     MutexGuard aGuard(m_aMutex);
     checkDisposed(OStatementCommonBase_Base::rBHelper.bDisposed);
 
-    return uno::Reference< XConnection >(m_pConnection);
+    return uno::Reference<XConnection>(m_pConnection.get());
 }
 
 Any SAL_CALL OStatement::queryInterface( const Type & rType ) throw(RuntimeException, std::exception)

connectivity/source/drivers/firebird/StatementCommonBase.cxx

@@ -51,7 +51,6 @@ OStatementCommonBase::OStatementCommonBase(Connection* _pConnection)
       m_aStatementHandle( 0 ),
       rBHelper(OStatementCommonBase_Base::rBHelper)
 {
-    m_pConnection->acquire();
 }
 
 OStatementCommonBase::~OStatementCommonBase()

connectivity/source/drivers/firebird/StatementCommonBase.hxx

@@ -60,7 +60,7 @@ namespace connectivity
 
             ::std::list< ::rtl::OUString>               m_aBatchList;
 
-            Connection*                                 m_pConnection;
+            ::rtl::Reference<Connection>                m_pConnection;
 
             ISC_STATUS_ARRAY                            m_statusVector;
             isc_stmt_handle                             m_aStatementHandle;
@@ -136,9 +136,6 @@ namespace connectivity
             // XCloseable
             virtual void SAL_CALL close(  ) throw(::com::sun::star::sdbc::SQLException, ::com::sun::star::uno::RuntimeException, std::exception) SAL_OVERRIDE;
 
-            // other methods
-            Connection* getOwnConnection() const { return m_pConnection;}
-
         };
     }
 }