pgdatabase.h
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上传日期:2007-01-07
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- /*-------------------------------------------------------------------------
- *
- * pgdatabase.h
- *
- *
- * DESCRIPTION
- * Postgres Database Class:
- * Query Postgres backend to obtain query results
- *
- * NOTES
- * Currently under construction.
- *
- * Copyright (c) 1994, Regents of the University of California
- *
- *
- * $Id: pgdatabase.h,v 1.2 1999/05/23 01:04:01 momjian Exp $
- *
- *-------------------------------------------------------------------------
- */
-
- #ifndef PGDATABASE_H
- #define PGDATABASE_H
-
- #include "pgconnection.h"
- // ****************************************************************
- //
- // 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:
- PgDatabase(const char* conninfo) : PgConnection(conninfo) {} // use reasonable defaults
- ~PgDatabase() {} ; // close connection and clean up
-
- // query result access
- int Tuples();
- 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 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
- };
- #endif // PGDATABASE_H