mongodb表字段处理生成域名字段

//db.getMongo().setSlaveOk();
//db.user.drop();
//db.user.save({"a":"111@34.com","b":"222"});
//db.user.save({"a":"222@55.com","b":"333"});
var stime=new Date;
print(stime);
var teststr="001_0010@osmaauto.com_1379305393";
var teststr1="001_0010@osmaauto.com_1379305393.cn";
function getDomain(teststr)
{
    //print("length:"+len);
    var len=teststr.length;
    var ltidx=teststr.lastIndexOf('_');
    if(ltidx!=-1)
    {
        //print('last index of '+ltidx);
        var tm=teststr.substr(ltidx+1,len-ltidx);
        //print('domain '+tm)
        var idx1=teststr.indexOf('@');
        var fidx=tm.indexOf('.');
        if( fidx != -1 )
        {
            //print("!=-1");
            return teststr.substr(idx1+1);
        }
        else
        {
            //print("==-1");
            //print('@:'+(idx1+1));
            //print('_:'+ltidx);
            var ss=teststr.substring(idx1+1,ltidx);
            return (ss)
        }
    

    }
}
//print('domain com: '+getDomain(teststr));
//print('domain cn: '+getDomain(teststr1));
i=0;
var cursor=db.user_dict.find().snapshot();
while(cursor.hasNext())
{
    var rec=cursor.next();
    i++;
    print(rec["_id"]);
    print(i);
    //var dom=rec["_id"].split("@");
    //print(dom[1]);
    var dom=getDomain(rec["_id"]);
    db.user_dict.update({_id:rec["_id"]},{$set:{domain:dom,cip_name:"cip1"}});
}
var endtime=new Date;
print(endtime);