error.h

用CJ60Lib界面库制作的SQL数据库客户与服务器程序。

#ifndef _ERROR_H_
#define _ERROR_H_

#define ERROR_STRING			1000
#define ILLEGAL_INPUT			1001
#define FIELD_NUM_EXCEED		1002
#define IN_TYPE_ERROR			1003
#define OUT_TYPE_ERROR			1004
#define IN_VALUE_ERROR			1005
#define OUT_VALUE_ERROR			1006
#define TYPE_MATCH_ERROR		1007
#define ENTRY_RANGE_ERROR		1008
#define UNKNOWN_ID				1009
#define SYNTAX_ERROR			1010
#define FILE_OPEN_ERROR			1011
#define FILE_CREATE_ERROR		1012
#define ERROR_RELATION			1013
#define ERROR_BUCKET_REMOVE		1014
#define ERROR_BPLUS_CREATE		1015
#define ERROR_BPLUS_INSERT		1016
#define ERROR_BPLUS_REMOVE		1017
#define ERROR_STACK				1018
#define ERROR_INDEX_LIMIT		1019
#define ERROR_INDEX_EXIST		1020
#define ERROR_INDEX_NOT_EXIST	1021
#define	ERROR_AUTHOR			1022
#define	ERROR_FILE_CORRUPTED	1023
#define ERROR_PROFILE			1024
#define ERROR_CHANGE_CODE		1025
#define ERROR_ATTR_NUM			1026

#define FATAL_ERROR				2000

class Error
{
public:
	Error( int id = FATAL_ERROR, int line = 0, const CString& descrip = _T("") ) : 
	  m_ErrType( id ), m_iLine( line ), m_Descrip( descrip ){}

	int m_ErrType;
	int m_iLine;
	CString m_Descrip;

	inline int GetErrLine()
	{
		return m_iLine;
	}

	CString GetErrStr()
	{
		CString str;
		switch( m_ErrType )
		{
		case ERROR_STRING:
			str.Format( "Error %d : Can't meet string \"%s\" \'s corresponding \" \' \". \n\tSee line %d.",
				m_ErrType, m_Descrip, m_iLine );
			break;
		case ILLEGAL_INPUT:
			str.Format( "Error %d : Illegal input : %s. \n\tSee line %d.", 
				m_ErrType, m_Descrip, m_iLine );
			break;
		case FIELD_NUM_EXCEED:
			str.Format( "Error %d : Max items ( %d ) in the table defined.",
				m_ErrType, m_iLine );
			break;
		case IN_TYPE_ERROR:
			str.Format( "Fatal Error %d : Input type ID %d is not defined.",
				m_ErrType, (UINT)m_iLine );
			break;
		case OUT_TYPE_ERROR:
			str.Format( "Fatal Error %d : Output type ID %d is not defined.",
				m_ErrType, (UINT)m_iLine );
			break;
		case IN_VALUE_ERROR:
			str.Format( "Fatal Error %d : String \"%s\" can't be accessed.",
				m_ErrType, m_Descrip );
			break;
		case OUT_VALUE_ERROR:
			str.Format( "Fatal Error %d : String \"%s\" is too long to be accessed.",
				m_ErrType, m_Descrip );
			break;
		case TYPE_MATCH_ERROR:
			str.Format( "Error %d : Types of the two components are not matched.",
				m_ErrType );
			break;
		case ENTRY_RANGE_ERROR:
			str.Format( "Error %d : The entry attributes range from 0 to %d.",
				m_ErrType, m_iLine );
			break;
		case UNKNOWN_ID:
			str.Format( "Error %d : Unknown command indentifier : %s.",
				m_ErrType, m_Descrip );
			break;
		case SYNTAX_ERROR:
			str.Format( "Error %d : Syntax error. See around string \"%s\".",
				m_ErrType, m_Descrip );
			break;
		case FILE_OPEN_ERROR:
			str.Format( "Fatal Error %d : File \"%s\" can't be opened.",
				m_ErrType, m_Descrip );
			break;
		case FILE_CREATE_ERROR:
			str.Format( "Fatal Error %d : File \"%s\" can't be created.",
				m_ErrType, m_Descrip );
			break;
		case ERROR_RELATION:
			str.Format( "Error %d : %s is not an attribute name of the relation.",
				m_ErrType, m_Descrip );
			break;
		case ERROR_BUCKET_REMOVE:
			str.Format( "Error %d : An key pointer %d is not found in the bucket, cannot be removed.",
				m_ErrType, m_iLine );
			break;
		case ERROR_BPLUS_CREATE:
			str.Format( "Error %d : An error occurs when creating the B+ Tree.\n\tMaybe the entry length is too huge.",
				m_ErrType, m_iLine );
			break;
		case ERROR_BPLUS_INSERT:
			str.Format( "Error %d : An error occurs when insert a node into the B+ Tree.\n\tMaybe it is a unique index.",
				m_ErrType );
			break;
		case ERROR_BPLUS_REMOVE:
			str.Format( "Error %d : An error occurs when delete a node in the B+ Tree.",
				m_ErrType );
			break;
		case ERROR_STACK:
			str.Format( "Error %d : The stack is empty, cannot pop again.",
				m_ErrType );
			break;
		case ERROR_INDEX_LIMIT:
			str.Format( "Error %d : There have existed %d indices of the table which have reached the index num limit.",
				m_ErrType, m_iLine );
			break;
		case ERROR_INDEX_EXIST:
			str.Format( "Error %d : The index \"%s.bpt\" has already existed which cannot be created again.",
				m_ErrType, m_Descrip );
			break;
		case ERROR_INDEX_NOT_EXIST:
			str.Format( "Error %d : The index \"%s.bpt\" is not existed so that it cannot be removed.",
				m_ErrType, m_Descrip );
			break;
		case ERROR_AUTHOR:
			str.Format( "Error %d : You are not authorized to create, update or drop table or index!",
				m_ErrType );
			break;
		case ERROR_FILE_CORRUPTED:
			str.Format( "Error %d : File corrupted.",
				m_ErrType );
			break;
		case ERROR_PROFILE:
			str.Format( "Error %d : User File corrupted.",
				m_ErrType );
			break;
		case ERROR_CHANGE_CODE:
			str.Format( "Error %d : An file error occurs when saving the user profile.",
				m_ErrType );
			break;
		case ERROR_ATTR_NUM:
			str.Format( "Error %d : Make sure the table takes %d attribute(s).",
				m_ErrType, m_iLine );
			break;
		default:
			str.Format( "Fatal Error %d : Unexpected error.", m_ErrType );
		}
		return str;
	}
};

#endif