00001 // BESDapHandlerException.cc 00002 00003 // This file is part of bes, A C++ back-end server implementation framework 00004 // for the OPeNDAP Data Access Protocol. 00005 00006 // Copyright (c) 2004,2005 University Corporation for Atmospheric Research 00007 // Author: Patrick West <pwest@ucar.edu> and Jose Garcia <jgarcia@ucar.edu> 00008 // 00009 // This library is free software; you can redistribute it and/or 00010 // modify it under the terms of the GNU Lesser General Public 00011 // License as published by the Free Software Foundation; either 00012 // version 2.1 of the License, or (at your option) any later version. 00013 // 00014 // This library is distributed in the hope that it will be useful, 00015 // but WITHOUT ANY WARRANTY; without even the implied warranty of 00016 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 00017 // Lesser General Public License for more details. 00018 // 00019 // You should have received a copy of the GNU Lesser General Public 00020 // License along with this library; if not, write to the Free Software 00021 // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 00022 // 00023 // You can contact University Corporation for Atmospheric Research at 00024 // 3080 Center Green Drive, Boulder, CO 80301 00025 00026 // (c) COPYRIGHT University Corporation for Atmospheric Research 2004-2005 00027 // Please read the full copyright statement in the file COPYRIGHT_UCAR. 00028 // 00029 // Authors: 00030 // pwest Patrick West <pwest@ucar.edu> 00031 // jgarcia Jose Garcia <jgarcia@ucar.edu> 00032 00033 #include <sstream> 00034 00035 using std::ostringstream; 00036 00037 #include "BESDapHandlerException.h" 00038 #include "BESContextManager.h" 00039 #include "BESSilentInfo.h" 00040 00050 int 00051 BESDapHandlerException::handleException( BESException &e, 00052 BESDataHandlerInterface &dhi ) 00053 { 00054 // If we are handling errors in a dap2 context, then convert all 00055 // exceptions into a libdap Error and print it to the output stream. 00056 // from the data handler interface. This will be 00057 // like a non-buffered response to a request. 00058 bool found = false ; 00059 string context = 00060 BESContextManager::TheManager()->get_context( "errors", found ) ; 00061 if( context == "dap2" ) 00062 { 00063 ErrorCode ec = unknown_error ; 00064 BESDapHandlerException *de = dynamic_cast<BESDapHandlerException*>( &e); 00065 if( de ) 00066 { 00067 ec = de->get_error_code() ; 00068 } 00069 Error new_e( ec, e.get_message() ) ; 00070 new_e.print( dhi.get_output_stream() ) ; 00071 00072 /* in order to not have anything transmitted during the transmit 00073 * phase, create a silent informational object for the error info. 00074 */ 00075 dhi.error_info = new BESSilentInfo() ; 00076 return e.get_return_code() ; 00077 } 00078 else 00079 { 00080 // If we are not in a dap2 context and the exception is a dap 00081 // handler exception, then convert the error message to include the 00082 // error code. If it is or is not a dap exception, we simply return 00083 // that the exception was not handled. 00084 BESDapHandlerException *de = dynamic_cast<BESDapHandlerException*>( &e); 00085 if( de ) 00086 { 00087 ostringstream s; 00088 s << "libdap exception building response" 00089 << ": error_code = " << de->get_error_code() 00090 << ": " << de->get_message() ; 00091 e.set_message( s.str() ) ; 00092 } 00093 } 00094 return BES_EXECUTED_OK ; 00095 } 00096