1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
|
/*-------------------------------------------------------------------------
*
* pgdatabase.h
*
*
* DESCRIPTION
* Postgres Database Class:
* Query Postgres backend to obtain query results
*
* NOTES
* Currently under construction.
*
* Portions Copyright (c) 1996-2001, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
*
* $Id: pgdatabase.h,v 1.9 2001/01/24 19:43:32 momjian Exp $
*
*-------------------------------------------------------------------------
*/
#ifndef PGDATABASE_H
#define PGDATABASE_H
#ifndef PGCONNECTION_H
#include "pgconnection.h"
#endif
// ****************************************************************
//
// PgDatabase - a class for accessing databases
//
// ****************************************************************
// This is the basic database access class. Its interface should
// be used only after a query has been sent to the backend and
// results are being received.
class PgDatabase : public PgConnection {
public:
// connect to the database with conninfo
PgDatabase(const char* conninfo) : PgConnection(conninfo) {}
~PgDatabase() {} // close connection and clean up
// query result access
int Tuples();
int CmdTuples();
int Fields();
const char* FieldName(int field_num);
int FieldNum(const char* field_name);
Oid FieldType(int field_num);
Oid FieldType(const char* field_name);
short FieldSize(int field_num);
short FieldSize(const char* field_name);
const char* GetValue(int tup_num, int field_num);
const char* GetValue(int tup_num, const char* field_name);
int GetIsNull(int tup_num, int field_num);
int GetIsNull(int tup_num, const char* field_name);
int GetLength(int tup_num, int field_num);
int GetLength(int tup_num, const char* field_name);
void DisplayTuples(FILE *out = 0, int fillAlign = 1,
const char* fieldSep = "|",int printHeader = 1, int quiet = 0) ;
void PrintTuples(FILE *out = 0, int printAttName = 1,
int terseOutput = 0, int width = 0) ;
// copy command related access
int GetLine(char* string, int length);
void PutLine(const char* string);
const char* OidStatus();
int EndCopy();
protected:
PgDatabase() : PgConnection() {} // Do not connect
private:
// We don't support copying of PgDatabase objects,
// so make copy constructor and assignment op private.
PgDatabase(const PgDatabase&);
PgDatabase& operator= (const PgDatabase&);
};
#endif // PGDATABASE_H
|
