主题
导入OLA图像 - ImportOlaImage
函数简介
将指定目录中的单个图像文件导入到OLA数据库中,可选择是否覆盖已存在的图像数据。
接口名称
ImportOlaImageDLL调用
cpp
int ImportOlaImage(long ola, const long db, string dir, string fileName, int cover);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 |
| dir | 字符串 | 图像文件所在的目录路径 |
| fileName | 字符串 | 要导入的图像文件名 |
| cover | 布尔值 | 是否覆盖已存在的图像数据,1 覆盖,0 跳过 |
示例
SDK 调用
cpp
#include "OLAPlugServer.h"
OLAPlugServer ola;
int ret = ola.ImportOlaImage(0, "value", "C:\\test.txt", 0);csharp
using OLAPlug;
var ola = new OLAPlugServer();
int ret = ola.ImportOlaImage(0, "value", "C:\\test.txt", 0);python
from OLAPlugServer import OLAPlugServer
ola = OLAPlugServer()
ret = ola.ImportOlaImage(0, "value", "C:\\test.txt", 0)java
import com.olaplug.OLAPlugServer;
OLAPlugServer ola = new OLAPlugServer();
int ret = ola.ImportOlaImage(0, "value", "C:\\test.txt", 0);cpp
var ola = com("OlaPlug.OlaSoft")
var ret = ola.ImportOlaImage(0, "value", "C:\\test.txt", 0)vbscript
Set ola = CreateObject("OlaPlug.OlaSoft")
ret = ola.ImportOlaImage(0, "value", "C:\\test.txt", 0)text
.局部变量 ola, OLAPlug
ola.创建 ()
ret = ola.ImportOlaImage(0, “value”, “C:\\test.txt”, 0)aardio
import OLAPlugServer;
var ola = OLAPlugServer();
var ret = ola.ImportOlaImage(0, "value", "C:\\test.txt", 0);text
变量 ola <类型 = OLAPlugServer>
ola = 新建 OLAPlugServer
整数 ret = ola.ImportOlaImage(0, "value", "C:\\test.txt", 0)cpp
#include "OLAPlugServer.h"
OLAPlugServer ola;
int32_t ret = ola.ImportOlaImage(0, "value", "C:\\test.txt", 0);原生 DLL 调用
cpp
long instance = CreateCOLAPlugInterFace();
ImportOlaImage(instance, 0, "value", "C:\\test.txt", 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 ImportOlaImage(long ola, long db, string dir, string fileName, int cover);
long instance = CreateCOLAPlugInterFace();
ImportOlaImage(instance, 0, "value", "C:\\test.txt", 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.ImportOlaImage(instance, 0, "value", "C:\\test.txt", 0)返回值
操作结果。成功返回 1,失败返回 0。
注意事项
- 适用于单个图像文件的导入场景。
cover为1时覆盖现有数据,为0时跳过已存在的图像。- 如果导入失败,可通过 GetDatabaseError 获取详细错误信息。
- 确保目录路径和文件名正确且图像文件格式受支持。
