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您好我performin基礎上,再寄一次刪除我的分貝我使用cron來設置時間和刪除db.Below是代碼收集不MongoDB中得到刪除
var cronJob = require('cron').CronJob;
new cronJob('* * * * *', function(){// set the required time
console.log('inside cron');
console.log(new Date());
console.log('You will see this message every minute');
dbDatadeletion();
}, null, true);
//This function performs the required operations after a particular time
function dbDatadeletion(){
var mongoose = require('mongoose');
var db1 = mongoose.createConnection('mongodb://localhost/CDB');
db1.on('error', console.error.bind(console, 'connection error:'));
db1.once('open', function callback(){
console.log('Database connectivity established...\n');
var schema = new mongoose.Schema({ USER_ID:String, APIKEY:String, SERVICE_ORCH_NAME:String, COLLATED_DATA:String });
var C_DATA_STORE = db1.model('C_DATA_STORE', schema);
var query = C_DATA_STORE.find();
console.log('Query Operation is being performed...');
query.select('COLLATED_DATA SERVICE_ORCH_NAME');
query.exec(function (err, data) {
if (err) return handleError(err);
console.log('Before Deletion');
console.log(data[0]);
db1.C_DATA_STORE.remove();
console.log('After Deletion');
console.log(data[0]);
});
});
}
當我運行上面的代碼我不能夠刪除我collection.Below是錯誤消息
TypeError: Cannot call method 'remove' of undefined
不知道如何解決,這將是很有益的
這是方法'db1.C_DATA_STORE'未定義。它不應該是'C_DATA_STORE.remove();'? – 2013-03-20 09:53:38
我認爲這是一個JavaScript錯誤。看到C_DATA_STORE不爲空。警報(C_DATA_STORE) – 2013-03-20 09:55:58
C_DATA_STORE.remove()不會刪除集合。而C_DATA_STORE不爲空 – 2013-03-20 10:43:49