MySQL嵌入式版本的小程序例子

# This assumes the MySQL software is installed in /usr/local/mysql #inc := /usr/local/mysql/include/mysql #lib := /usr/local/mysql/lib # If you have not installed the MySQL software yet, try this instead topdir := /home/mysql/mysql-5.5.35

# This assumes the MySQL software is installed in /usr/local/mysql

#inc      := /usr/local/mysql/include/mysql

#lib      := /usr/local/mysql/lib

 

# If you have not installed the MySQL software yet, try this instead

topdir   := /home/mysql/mysql-5.5.35

inc      := $(topdir)/include

lib      := $(topdir)/libmysqld

 

CXX      := g++

CPPFLAGS := -I$(inc) -D_THREAD_SAFE -D_REENTRANT

CXXFLAGS := -g -Wall

LDFLAGS  :=

# You can change -lmysqld to -lmysqlclient to use the

# client/server library

LDLIBS    = -L$(lib) -lmysqld -lm -lcrypt -ldl -lz -lrt

 

ifneq (,$(shell grep FreeBSD /COPYRIGHT 2>/dev/null))

# FreeBSD

LDFLAGS += -pthread

else

# Assume Linux

LDLIBS += -pthread

endif

 

# This works for simple one-file test programs

sources := $(wildcard *.cc)

objects := $(patsubst %cc,%o,$(sources))

targets := $(basename $(sources))

 

all: $(targets)

 

clean:

    rm -f $(targets) $(objects) *.core

 

---

#include

#include

#include

 

using namespace std;

 

const char *server_options[] =

       { "mysql_test", "--defaults-file=my.cnf", NULL };

int num_elements = (sizeof(server_options) / sizeof(char *)) - 1;

 

const char *server_groups[]= { "libmysqld_server",

                               "libmysqld_client",

                               NULL};

 

bool is_server_started= false;

 

MYSQL *MySQL= NULL;

 

const char *db= NULL;

 

void start_server()

{

  cout

  if (mysql_library_init(num_elements, (char **) server_options, (char **) server_groups)) {

    is_server_started= false;

    cout

  }

  else {

    is_server_started= true;

    cout

  }

}

 

void stop_server()

{

  cout

  mysql_server_end();

}

 

bool connect_server()

{

  cout

  bool rc = true;

 

  MySQL = mysql_init(NULL);

  if (!MySQL)

    return rc;

 

  if (mysql_real_connect(MySQL, NULL, NULL, NULL, db, 0, NULL, 0))

    rc = false;

  

  MySQL->reconnect= 1;

  return rc;

}

 

void output_rows(MYSQL_RES *res)

{

  MYSQL_ROW row;

  unsigned long n = 0;

 

  while ((row= mysql_fetch_row(res)) != 0)

  {

    mysql_field_seek(res, 0);

    for (unsigned int i= 0 ; i

      cout

  }

}

 

bool get_dbs()

{

  MYSQL_RES *res;

 

  if (!is_server_started)

    return true;

 

  if (!(res= mysql_list_dbs(MySQL, "%")))

    return true;

 

  output_rows(res);

  mysql_free_result(res);

  return false;

}

 

int main(int argc, char *argv[])

{

  start_server();

  if (is_server_started) {

    cout

    if (!connect_server()) {

      get_dbs();

    }

    stop_server();

  }

 

  return 0;

}

 

---

[libmysqld_client]

 

[libmysqld_server]

basedir=/home/mysql/

datadir=/home/mysql/data

tmpdir=/home/mysql/tmp

log-error=/home/mysql/alert.log

lc_messages_dir=/home/mysql/share

 

innodb_data_home_dir=/home/mysql/data

innodb_log_group_home_dir=/home/mysql/data

，