主题
初始化OLA数据库 - InitOlaDatabase
函数简介
初始化OLA数据库,执行创建表、初始化默认数据等必要操作。
接口名称
InitOlaDatabaseDLL调用
cpp
int InitOlaDatabase(long ola, const long db);参数说明
| 参数名 | 类型 | 说明 |
|---|---|---|
| ola | 长整型数 | OLAPlug对象的指针,由 CreateCOLAPlugInterFace 接口生成 |
| db | 长整型数 | 数据库连接句柄,由 OpenDatabase 接口生成 |
示例
SDK 调用
cpp
#include "OLAPlugServer.h"
OLAPlugServer ola;
int ret = ola.InitOlaDatabase(0);csharp
using OLAPlug;
var ola = new OLAPlugServer();
int ret = ola.InitOlaDatabase(0);python
from OLAPlugServer import OLAPlugServer
ola = OLAPlugServer()
ret = ola.InitOlaDatabase(0)java
import com.olaplug.OLAPlugServer;
OLAPlugServer ola = new OLAPlugServer();
int ret = ola.InitOlaDatabase(0);cpp
var ola = com("OlaPlug.OlaSoft")
var ret = ola.InitOlaDatabase(0)vbscript
Set ola = CreateObject("OlaPlug.OlaSoft")
ret = ola.InitOlaDatabase(0)text
.局部变量 ola, OLAPlug
ola.创建 ()
ret = ola.InitOlaDatabase(0)aardio
import OLAPlugServer;
var ola = OLAPlugServer();
var ret = ola.InitOlaDatabase(0);text
变量 ola <类型 = OLAPlugServer>
ola = 新建 OLAPlugServer
整数 ret = ola.InitOlaDatabase(0)cpp
#include "OLAPlugServer.h"
OLAPlugServer ola;
int32_t ret = ola.InitOlaDatabase(0);原生 DLL 调用
cpp
long instance = CreateCOLAPlugInterFace();
InitOlaDatabase(instance, 0);csharp
using System.Runtime.InteropServices;
using System.Text;
[DllImport("OLAPlug_x64.dll", CallingConvention = CallingConvention.StdCall)]
static extern long CreateCOLAPlugInterFace();
[DllImport("OLAPlug_x64.dll", CallingConvention = CallingConvention.StdCall)]
static extern int InitOlaDatabase(long ola, long db);
long instance = CreateCOLAPlugInterFace();
InitOlaDatabase(instance, 0);python
from ctypes import CDLL, c_int, c_int64, create_string_buffer
ola = CDLL("OLAPlug_x64.dll")
ola.CreateCOLAPlugInterFace.restype = c_int64
instance = ola.CreateCOLAPlugInterFace()
ola.InitOlaDatabase(instance, 0)返回值
操作结果。成功返回 1,失败返回 0。
注意事项
- 确保在数据库打开后调用此函数,否则可能导致未定义行为。
- 如果初始化失败,可通过 GetDatabaseError 获取详细错误信息。
