ds_impl.cpp
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上传日期：2007-06-13
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- /*
- * ===========================================================================
- * PRODUCTION $Log: ds_impl.cpp,v $
- * PRODUCTION Revision 1000.2 2004/06/01 19:18:36 gouriano
- * PRODUCTION PRODUCTION: UPGRADED [GCC34_MSVC7] Dev-tree R1.13
- * PRODUCTION
- * ===========================================================================
- */
- /* $Id: ds_impl.cpp,v 1000.2 2004/06/01 19:18:36 gouriano Exp $
- * ===========================================================================
- *
- * PUBLIC DOMAIN NOTICE
- * National Center for Biotechnology Information
- *
- * This software/database is a "United States Government Work" under the
- * terms of the United States Copyright Act. It was written as part of
- * the author's official duties as a United States Government employee and
- * thus cannot be copyrighted. This software/database is freely available
- * to the public for use. The National Library of Medicine and the U.S.
- * Government have not placed any restriction on its use or reproduction.
- *
- * Although all reasonable efforts have been taken to ensure the accuracy
- * and reliability of the software and data, the NLM and the U.S.
- * Government do not and cannot warrant the performance or results that
- * may be obtained by using this software or data. The NLM and the U.S.
- * Government disclaim all warranties, express or implied, including
- * warranties of performance, merchantability or fitness for any particular
- * purpose.
- *
- * Please cite the author in any work or product based on this material.
- *
- * ===========================================================================
- *
- * Author: Michael Kholodov
- *
- * File Description:
- * DataSource implementation
- *
- */
- #include <ncbi_pch.hpp>
- #include "ds_impl.hpp"
- #include "conn_impl.hpp"
- #include "err_handler.hpp"
- BEGIN_NCBI_SCOPE
- CDataSource::CDataSource(I_DriverContext *ctx)
- : m_loginTimeout(30), m_context(ctx), m_poolUsed(false),
- m_multiExH(0)
- {
- SetIdent("CDataSource");
- }
- CDataSource::~CDataSource()
- {
- _TRACE("Deleting " << GetIdent() << " " << (void*)this);
- Notify(CDbapiDeletedEvent(this));
- delete m_context;
- delete m_multiExH;
- _TRACE(GetIdent() << " " << (void*)this << " deleted.");
- }
- void CDataSource::SetLoginTimeout(unsigned int i)
- {
- m_loginTimeout = i;
- if( m_context != 0 ) {
- m_context->SetLoginTimeout(i);
- }
- }
- void CDataSource::SetLogStream(CNcbiOstream* out)
- {
- if( out != 0 ) {
- // Clear the previous handlers if present
- if( m_multiExH != 0 ) {
- m_context->PopCntxMsgHandler(m_multiExH);
- m_context->PopDefConnMsgHandler(m_multiExH);
- delete m_multiExH;
- m_multiExH = 0;
- }
-
- CDB_UserHandler *newH = new CDB_UserHandler_Stream(out);
- CDB_UserHandler *h = CDB_UserHandler::SetDefault(newH);
- delete h;
- }
- else {
- if( m_multiExH == 0 ) {
- m_multiExH = new CToMultiExHandler;
- m_context->PushCntxMsgHandler(m_multiExH);
- m_context->PushDefConnMsgHandler(m_multiExH);
- }
- }
- }
- CToMultiExHandler* CDataSource::GetHandler()
- {
- return m_multiExH;
- }
-
- CDB_MultiEx* CDataSource::GetErrorAsEx()
- {
- return GetHandler() == 0 ? 0 : GetHandler()->GetMultiEx();
- }
- string CDataSource::GetErrorInfo()
- {
- if( GetHandler() != 0 ) {
- CNcbiOstrstream out;
- CDB_UserHandler_Stream h(&out);
- h.HandleIt(GetHandler()->GetMultiEx());
- return CNcbiOstrstreamToString(out);
- }
- else
- return kEmptyStr;
- }
- I_DriverContext* CDataSource::GetDriverContext() {
- if( m_context == 0 )
- throw CDbapiException("CDataSource::GetDriverContext(): no valid context");
- return m_context;
- }
- IConnection* CDataSource::CreateConnection()
- {
- CConnection *conn = new CConnection(this);
- AddListener(conn);
- conn->AddListener(this);
- return conn;
- }
- void CDataSource::Action(const CDbapiEvent& e)
- {
- _TRACE(GetIdent() << " " << (void*)this << ": '" << e.GetName()
- << "' from " << e.GetSource()->GetIdent());
- if( dynamic_cast<const CDbapiDeletedEvent*>(&e) != 0 ) {
- RemoveListener(e.GetSource());
- }
- }
- END_NCBI_SCOPE
- /*
- * ===========================================================================
- * $Log: ds_impl.cpp,v $
- * Revision 1000.2 2004/06/01 19:18:36 gouriano
- * PRODUCTION: UPGRADED [GCC34_MSVC7] Dev-tree R1.13
- *
- * Revision 1.13 2004/05/17 21:10:28 gorelenk
- * Added include of PCH ncbi_pch.hpp
- *
- * Revision 1.12 2003/11/04 21:36:02 vakatov
- * Minor style fixes
- *
- * Revision 1.11 2002/11/27 17:09:52 kholodov
- * Fixed: Resolved version conflict.
- *
- * Revision 1.10 2002/11/27 16:59:38 ucko
- * Drop definitions of CToMultiExHandler methods now found in err_handler.cpp.
- *
- * Revision 1.9 2002/10/03 18:50:00 kholodov
- * Added: additional TRACE diagnostics about object deletion
- * Fixed: setting parameters in IStatement object is fully supported
- * Added: IStatement::ExecuteLast() to execute the last statement with
- * different parameters if any
- *
- * Revision 1.8 2002/09/30 19:16:27 kholodov
- * Added: public GetHandler() method
- *
- * Revision 1.7 2002/09/23 18:35:24 kholodov
- * Added: GetErrorInfo() and GetErrorAsEx() methods.
- *
- * Revision 1.6 2002/09/18 18:49:27 kholodov
- * Modified: class declaration and Action method to reflect
- * direct inheritance of CActiveObject from IEventListener
- *
- * Revision 1.5 2002/09/09 20:48:57 kholodov
- * Added: Additional trace output about object life cycle
- * Added: CStatement::Failed() method to check command status
- *
- * Revision 1.4 2002/04/15 19:11:42 kholodov
- * Changed GetContext() -> GetDriverContext
- *
- * Revision 1.3 2002/02/08 17:38:26 kholodov
- * Moved listener registration to parent objects
- *
- * Revision 1.2 2002/02/06 22:21:57 kholodov
- * Reformatted the source code
- *
- * Revision 1.1 2002/01/30 14:51:21 kholodov
- * User DBAPI implementation, first commit
- * ===========================================================================
- */
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