greenplumn CMessageRepository 源码
greenplumn CMessageRepository 代码
文件路径：/src/backend/gporca/libgpos/include/gpos/error/CMessageRepository.h
//---------------------------------------------------------------------------
// Greenplum Database
// Copyright (C) 2008 - 2010, Greenplum, Inc.
//
// @filename:
// CMessageRepository.h
//
// @doc:
// Error message repository;
//---------------------------------------------------------------------------
#ifndef GPOS_CMessageRepository_H
#define GPOS_CMessageRepository_H
#include "gpos/error/CMessageTable.h"
namespace gpos
{
//---------------------------------------------------------------------------
// @class:
// CMessageRepository
//
// @doc:
// Stores and loads all error messages by locale
//
//---------------------------------------------------------------------------
class CMessageRepository
{
private:
// global singleton
static CMessageRepository *m_repository;
// memory pool
CMemoryPool *m_mp;
// short hand for Table of Message Tables (TMT)
using TMT = CSyncHashtable<CMessageTable, ELocale>;
// short hand for TMT accessor
using TMTAccessor = CSyncHashtableAccessByKey<CMessageTable, ELocale>;
// basic hash table
TMT m_hash_table;
// init basic directory
void InitDirectory(CMemoryPool *mp);
// install message table for a given locale
void AddMessageTable(ELocale locale);
// pre-load standard messages
void LoadStandardMessages();
public:
// ctor
CMessageRepository(CMemoryPool *mp);
// dtor
~CMessageRepository() = default;
// lookup message by error/local
CMessage *LookupMessage(CException exc, ELocale locale);
// add individual message
void AddMessage(ELocale locale, CMessage *msg);
// initializer for global singleton
static GPOS_RESULT Init();
// accessor for global singleton
static CMessageRepository *GetMessageRepository();
void Shutdown();
}; // class CMessageRepository
} // namespace gpos
#endif // !GPOS_CMessageRepository_H
// EOF
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