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/*-
* See the file LICENSE for redistribution information.
*
* Copyright (c) 1997-2002
* Sleepycat Software. All rights reserved.
*
* $Id: cxx_except.h,v 11.5 2002/08/01 23:32:34 mjc Exp $
*/
#ifndef _CXX_EXCEPT_H_
#define _CXX_EXCEPT_H_
#include "cxx_common.h"
////////////////////////////////////////////////////////////////
////////////////////////////////////////////////////////////////
//
// Forward declarations
//
class DbDeadlockException; // forward
class DbException; // forward
class DbLockNotGrantedException; // forward
class DbLock; // forward
class DbMemoryException; // forward
class DbRunRecoveryException; // forward
class Dbt; // forward
////////////////////////////////////////////////////////////////
////////////////////////////////////////////////////////////////
//
// Exception classes
//
// Almost any error in the DB library throws a DbException.
// Every exception should be considered an abnormality
// (e.g. bug, misuse of DB, file system error).
//
// NOTE: We would like to inherit from class exception and
// let it handle what(), but there are
// MSVC++ problems when <exception> is included.
//
class _exported DbException
{
public:
virtual ~DbException();
DbException(int err);
DbException(const char *description);
DbException(const char *prefix, int err);
DbException(const char *prefix1, const char *prefix2, int err);
int get_errno() const;
virtual const char *what() const;
DbException(const DbException &);
DbException &operator = (const DbException &);
private:
char *what_;
int err_; // errno
};
//
// A specific sort of exception that occurs when
// an operation is aborted to resolve a deadlock.
//
class _exported DbDeadlockException : public DbException
{
public:
virtual ~DbDeadlockException();
DbDeadlockException(const char *description);
DbDeadlockException(const DbDeadlockException &);
DbDeadlockException &operator = (const DbDeadlockException &);
};
//
// A specific sort of exception that occurs when
// a lock is not granted, e.g. by lock_get or lock_vec.
// Note that the Dbt is only live as long as the Dbt used
// in the offending call.
//
class _exported DbLockNotGrantedException : public DbException
{
public:
virtual ~DbLockNotGrantedException();
DbLockNotGrantedException(const char *prefix, db_lockop_t op,
db_lockmode_t mode, const Dbt *obj, const DbLock lock, int index);
DbLockNotGrantedException(const DbLockNotGrantedException &);
DbLockNotGrantedException &operator =
(const DbLockNotGrantedException &);
db_lockop_t get_op() const;
db_lockmode_t get_mode() const;
const Dbt* get_obj() const;
DbLock *get_lock() const;
int get_index() const;
private:
db_lockop_t op_;
db_lockmode_t mode_;
const Dbt *obj_;
DbLock *lock_;
int index_;
};
//
// A specific sort of exception that occurs when
// user declared memory is insufficient in a Dbt.
//
class _exported DbMemoryException : public DbException
{
public:
virtual ~DbMemoryException();
DbMemoryException(Dbt *dbt);
DbMemoryException(const char *description);
DbMemoryException(const char *prefix, Dbt *dbt);
DbMemoryException(const char *prefix1, const char *prefix2, Dbt *dbt);
Dbt *get_dbt() const;
DbMemoryException(const DbMemoryException &);
DbMemoryException &operator = (const DbMemoryException &);
private:
Dbt *dbt_;
};
//
// A specific sort of exception that occurs when
// recovery is required before continuing DB activity.
//
class _exported DbRunRecoveryException : public DbException
{
public:
virtual ~DbRunRecoveryException();
DbRunRecoveryException(const char *description);
DbRunRecoveryException(const DbRunRecoveryException &);
DbRunRecoveryException &operator = (const DbRunRecoveryException &);
};
#endif /* !_CXX_EXCEPT_H_ */
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