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/* Copyright (C) 2003 MySQL AB
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */
#ifndef NDB_ERROR_HPP
#define NDB_ERROR_HPP
#include <ndberror.h>
/**
* @struct NdbError
* @brief Contains error information
*
* A NdbError consists of five parts:
* -# Error status : Application impact
* -# Error classification : Logical error group
* -# Error code : Internal error code
* -# Error message : Context independent description of error
* -# Error details : Context dependent information
* (not always available)
*
* <em>Error status</em> is usually used for programming against errors.
* If more detailed error control is needed, it is possible to
* use the <em>error classification</em>.
*
* It is not recommended to write application programs dependent on
* specific <em>error codes</em>.
*
* The <em>error messages</em> and <em>error details</em> may
* change without notice.
*
* For example of use, see @ref ndbapi_retries.cpp.
*/
struct NdbError {
/**
* Status categorizes error codes into status values reflecting
* what the application should do when encountering errors
*/
enum Status {
/**
* The error code indicate success<br>
* (Includes classification: NdbError::NoError)
*/
Success = ndberror_st_success,
/**
* The error code indicates a temporary error.
* The application should typically retry.<br>
* (Includes classifications: NdbError::InsufficientSpace,
* NdbError::TemporaryResourceError, NdbError::NodeRecoveryError,
* NdbError::OverloadError, NdbError::NodeShutdown
* and NdbError::TimeoutExpired.)
*/
TemporaryError = ndberror_st_temporary,
/**
* The error code indicates a permanent error.<br>
* (Includes classificatons: NdbError::PermanentError,
* NdbError::ApplicationError, NdbError::NoDataFound,
* NdbError::ConstraintViolation, NdbError::SchemaError,
* NdbError::UserDefinedError, NdbError::InternalError, and,
* NdbError::FunctionNotImplemented.)
*/
PermanentError = ndberror_st_permanent,
/**
* The result/status is unknown.<br>
* (Includes classifications: NdbError::UnknownResultError, and
* NdbError::UnknownErrorCode.)
*/
UnknownResult = ndberror_st_unknown
};
/**
* Type of error
*/
enum Classification {
/**
* Success. No error occurred.
*/
NoError = ndberror_cl_none,
/**
* Error in application program.
*/
ApplicationError = ndberror_cl_application,
/**
* Read operation failed due to missing record.
*/
NoDataFound = ndberror_cl_no_data_found,
/**
* E.g. inserting a tuple with a primary key already existing
* in the table.
*/
ConstraintViolation = ndberror_cl_constraint_violation,
/**
* Error in creating table or usage of table.
*/
SchemaError = ndberror_cl_schema_error,
/**
* Error occurred in interpreted program.
*/
UserDefinedError = ndberror_cl_user_defined,
/**
* E.g. insufficient memory for data or indexes.
*/
InsufficientSpace = ndberror_cl_insufficient_space,
/**
* E.g. too many active transactions.
*/
TemporaryResourceError = ndberror_cl_temporary_resource,
/**
* Temporary failures which are probably inflicted by a node
* recovery in progress. Examples: information sent between
* application and NDB lost, distribution change.
*/
NodeRecoveryError = ndberror_cl_node_recovery,
/**
* E.g. out of log file space.
*/
OverloadError = ndberror_cl_overload,
/**
* Timeouts, often inflicted by deadlocks in NDB.
*/
TimeoutExpired = ndberror_cl_timeout_expired,
/**
* Is is unknown whether the transaction was committed or not.
*/
UnknownResultError = ndberror_cl_unknown_result,
/**
* A serious error in NDB has occurred.
*/
InternalError = ndberror_cl_internal_error,
/**
* A function used is not yet implemented.
*/
FunctionNotImplemented = ndberror_cl_function_not_implemented,
/**
* Error handler could not determine correct error code.
*/
UnknownErrorCode = ndberror_cl_unknown_error_code,
/**
* Node shutdown
*/
NodeShutdown = ndberror_cl_node_shutdown,
/**
* Schema object already exists
*/
SchemaObjectExists = ndberror_cl_schema_object_already_exists,
/**
* Request sent to non master
*/
InternalTemporary = ndberror_cl_internal_temporary
};
/**
* Error status.
*/
Status status;
/**
* Error type
*/
Classification classification;
/**
* Error code
*/
int code;
/**
* Mysql error code
*/
int mysql_code;
/**
* Error message
*/
const char * message;
/**
* The detailed description. This is extra information regarding the
* error which is not included in the error message.
*
* @note Is NULL when no details specified
*/
char * details;
#ifndef DOXYGEN_SHOULD_SKIP_INTERNAL
NdbError(){
status = UnknownResult;
classification = NoError;
code = 0;
mysql_code = 0;
message = 0;
details = 0;
}
NdbError(const ndberror_struct & ndberror){
status = (NdbError::Status) ndberror.status;
classification = (NdbError::Classification) ndberror.classification;
code = ndberror.code;
mysql_code = ndberror.mysql_code;
message = ndberror.message;
details = ndberror.details;
}
operator ndberror_struct() const {
ndberror_struct ndberror;
ndberror.status = (ndberror_status_enum) status;
ndberror.classification = (ndberror_classification_enum) classification;
ndberror.code = code;
ndberror.mysql_code = mysql_code;
ndberror.message = message;
ndberror.details = details;
return ndberror;
}
#endif
};
class NdbOut& operator <<(class NdbOut&, const NdbError &);
class NdbOut& operator <<(class NdbOut&, const NdbError::Status&);
class NdbOut& operator <<(class NdbOut&, const NdbError::Classification&);
#endif
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