fetch.c

来自「Unix 环境下用C语言实现的内存数据库。」· C语言 代码 · 共 38 行

#include "MemDataBase.h"
#include "demo.h"
int main(int argc,char **argv)
{
    MEMDATABASE *pMemDB;
    DEMO_DEF stuDemo;
    int iRet,id,subid,iIpcKey;
    long lMaxRecords;
    if(argc!=3)
    {
        printf("Usage:%s Ipckey id\n",argv[0]);
        exit(0);
    }
    iIpcKey = atoi(argv[1]);
    id = atol(argv[2]);
    iRet = AttachMemDB(&pMemDB,iIpcKey);
    if(iRet!=T_SUCCESS)
    {
        printf("AttachMemDB Error[%d]\n",iRet);
        exit(1);
    }
    printf("IPCKEY   =   %d\n",pMemDB->iIpcKey);
    printf("SHM_ID   =   %d\n",pMemDB->iShmId);
    printf("SEM_ID   =   %d\n",pMemDB->iSemId);

    /*DeclareCursorMemDB(pMemDB,DEMO_DEF,id,&id);*/
    while(1)
    {
        iRet = FetchCursorMemDB(pMemDB,(char*)&stuDemo);
        if(iRet!=T_SUCCESS) break;
        printf("id    = [%d]\n",stuDemo.id);
        printf("subid = [%d]\n",stuDemo.subid);
        printf("name  = [%s]\n",stuDemo.name);
    }
    CloseCursorMemDB(pMemDB);
    printf("Fetch Success!\n");
}