mirror of https://github.com/BOINC/boinc.git
119 lines
2.9 KiB
C++
119 lines
2.9 KiB
C++
// The contents of this file are subject to the BOINC Public License
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// Version 1.0 (the "License"); you may not use this file except in
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// compliance with the License. You may obtain a copy of the License at
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// http://boinc.berkeley.edu/license_1.0.txt
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//
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// Software distributed under the License is distributed on an "AS IS"
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// basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the
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// License for the specific language governing rights and limitations
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// under the License.
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//
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// The Original Code is the Berkeley Open Infrastructure for Network Computing.
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//
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// The Initial Developer of the Original Code is the SETI@home project.
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// Portions created by the SETI@home project are Copyright (C) 2002
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// University of California at Berkeley. All Rights Reserved.
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//
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// Contributor(s):
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//
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#ifndef _DB_BASE_
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#define _DB_BASE_
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#include "mysql.h"
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// if SQL columns are not 'not null', you must use these safe_atoi, safe_atof
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// instead of atoi, atof, since the strings returned by MySQL may be NULL.
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//
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inline int safe_atoi(const char* s) {
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if (!s) return 0;
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return atoi(s);
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}
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inline float safe_atof(const char* s) {
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if (!s) return 0;
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return atof(s);
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}
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#define strcpy2(x, y) \
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{ \
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char* z = y; \
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if (!z) { \
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x[0]=0; \
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} else { \
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strlcpy(x, z, sizeof(x)); \
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} \
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}
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#define MAX_QUERY_LEN 256000
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// TODO: use string for queries, get rid of this
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struct CURSOR {
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bool active;
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MYSQL_RES *rp;
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CURSOR() { active = false; rp = NULL; }
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};
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// represents a connection to a database
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//
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class DB_CONN {
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public:
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DB_CONN();
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int open(char* name, char* host, char* user, char* passwd);
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int do_query(char*);
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void close();
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int insert_id();
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void print_error(char*);
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const char* error_string();
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MYSQL* mysql;
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int start_transaction();
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int commit_transaction();
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};
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// Base for derived classes that can access the DB
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// Defines various generic operations on DB tables
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//
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class DB_BASE {
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public:
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DB_BASE(DB_CONN&, char *table_name);
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int insert();
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int insert_batch(const char*);
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int update();
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int update_field(char*);
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int get_field_int(char*, int&);
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int lookup_id(int id);
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int lookup(char*);
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int enumerate(char* clause="");
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int end_enumerate();
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int count(int&, char* clause="");
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int sum(double&, char* field, char* clause="");
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int get_double(char* query, double&);
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int get_integer(char* query, int&);
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bool is_high_priority;
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DB_CONN* db;
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const char *table_name;
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CURSOR cursor;
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virtual int get_id();
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virtual void db_print(char*);
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virtual void db_parse(MYSQL_ROW&);
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};
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// Base for derived classes that can get special-purpose data,
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// perhaps spanning multiple tables
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//
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class DB_BASE_SPECIAL {
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public:
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DB_BASE_SPECIAL(DB_CONN&);
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DB_CONN* db;
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CURSOR cursor;
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};
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void escape_string(char* field, int len);
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void unescape_string(char* p, int len);
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#endif
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