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/**
Copyright 2000 - 2003 LogicMatrix. All rights reserved.
This software is distributed under the LogicMatrix Free Software License. This software may be used for any purpose, personal or commercial. Redistributions in binary /source code form are permitted. Commercial redistribution of larger works derived from, or works which bundle this software requires a "Commercial Redistribution License" which can be purchased from LogicMatrix. Contact LogicMatrix for details
Redistributions qualify as Free and non-commercial under one of the following terms:
1) Redistributions are made at no charge beyond the reasonable cost of materials and delivery.
2) Redistributions in binary/source code form must reproduce this Copyright Notice,these license terms, and the disclaimer/limitation of liability set forth as below, in the documentation and/or other materials
provided with the distribution.
Disclaimer
==========
The Software is provided on an "AS IS" basis. No warranty is
provided that the Software is free of defects, or fit for a
particular purpose.
Limitation of Liability
=======================
LogicMatrix shall not be liable for any damages suffered by the Licensee or any third party resulting from use of the Software.
**/
/**
unique.h
Purpose: Checks if a new value will create duplicate entry in
an index file
Author: Vijay Mathew Pandyalakal
Date: 21/11/2003
Copyright: logicmatrix
**/
#ifndef UNIQUE_H_
#define UNIQUE_H_
namespace dsqlm {
class Unique {
private:
Table* table;
Database* m_db;
public:
Unique(Table* table,Database* db);
// check() will return true if "new_val" will create a duplicate
// entry in the index file.if pos is not -1, check will omit
// comparison of that pair with "pos" as data
bool check(Column col,const char* new_val,long pos);
};
}
#endif
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