mirror of
https://github.com/FirebirdSQL/firebird.git
synced 2025-01-31 22:43:04 +01:00
83 lines
1.8 KiB
C++
83 lines
1.8 KiB
C++
/*
|
|
* The contents of this file are subject to the Initial
|
|
* Developer's Public License Version 1.0 (the "License");
|
|
* you may not use this file except in compliance with the
|
|
* License. You may obtain a copy of the License at
|
|
* http://www.ibphoenix.com/main.nfs?a=ibphoenix&page=ibp_idpl.
|
|
*
|
|
* Software distributed under the License is distributed AS IS,
|
|
* WITHOUT WARRANTY OF ANY KIND, either express or implied.
|
|
* See the License for the specific language governing rights
|
|
* and limitations under the License.
|
|
*
|
|
* The Original Code was created by Claudio Valderrama on 25-Sept-2007
|
|
* for the Firebird Open Source RDBMS project.
|
|
*
|
|
* Copyright (c) 2007 Claudio Valderrama
|
|
* and all contributors signed below.
|
|
*
|
|
* All Rights Reserved.
|
|
* Contributor(s): ______________________________________.
|
|
*
|
|
*/
|
|
|
|
|
|
#ifndef FB_COLLIST_H
|
|
#define FB_COLLIST_H
|
|
|
|
#include "../jrd/constants.h"
|
|
|
|
// This is a linked list implementing a seldom used feature: the ability to
|
|
// asssign a maximum width to each column, by name. The name should match the
|
|
// one that appears in a result set (from a SELECT statement).
|
|
// Each "item" represents a column name and its associated length.
|
|
|
|
class ColList
|
|
{
|
|
public:
|
|
struct item
|
|
{
|
|
TEXT col_name[MAX_SQL_IDENTIFIER_SIZE];
|
|
int col_len;
|
|
item* next;
|
|
item(const char* name, int len);
|
|
};
|
|
|
|
ColList();
|
|
~ColList();
|
|
void clear();
|
|
item* getHead();
|
|
bool put(const char* name, int len);
|
|
bool remove(const char* name);
|
|
const item* find(const char* name) const;
|
|
bool find(const char* name, int* out_len) const;
|
|
size_t count() const;
|
|
|
|
private:
|
|
size_t m_count;
|
|
item* m_head;
|
|
};
|
|
|
|
inline ColList::ColList()
|
|
: m_count(0), m_head(0)
|
|
{
|
|
}
|
|
|
|
inline ColList::~ColList()
|
|
{
|
|
clear();
|
|
}
|
|
|
|
inline ColList::item* ColList::getHead()
|
|
{
|
|
return m_head;
|
|
}
|
|
|
|
inline size_t ColList::count() const
|
|
{
|
|
return m_count;
|
|
}
|
|
|
|
#endif // FB_COLLIST_H
|
|
|