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dbRequest.js
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dbRequest.js
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var mysql = require('mysql'),
emitter = require('events').EventEmitter;
var dbConfig = require('./dbConfig');
var dbConnect = mysql.createConnection(dbConfig);
function showChildren(query) {
var e = new emitter();
dbConnect.query('SELECT company_id, name, earnings, company_id IN (' +
'SELECT DISTINCT parent_id from tb_tree) children ' +
'from tb_tree where parent_id = ' + query.parentId,
function (err, result) {
if (err) {
console.log(err);
return;
}
console.log('selected data with parentId = ' + query.parentId);
e.emit('response', result);
});
return e;
}
function addNewCompany(query) {
var e = new emitter();
dbConnect.query('INSERT INTO tb_tree (name, earnings, parent_id) VALUES ("' +
query.name + '", ' + query.earnings + ', ' +
query.company_id + ')',
function (err, result){
if (err) {
console.log(err);
return;
}
console.log('new company added with id = ' + result.insertId);
e.emit('response', result);
});
return e;
}
function editCompany(query) {
var e = new emitter();
console.log(query);
dbConnect.query('update tb_tree set name = "' + query.name + '", earnings = "' + query.earnings + '" where company_id = "' + query.company_id +'"',
function (err, result) {
if (err) {
console.log(err);
return;
}
console.log('edited company with id = ' + query.company_id);
console.log(result);
e.emit('response', result);
});
return e;
}
function deleteCompany(query) {
var e = new emitter();
dbConnect.query('DELETE FROM tb_tree where parent_id = ' + query.companyId +
' OR company_id = ' + query.companyId,
function (err, result) {
if (err) {
console.log(err);
return;
}
console.log('delete company with id = ' + query.companyId +
' and all childrean');
e.emit('response');
});
return e;
}
exports.editCompany = editCompany;
exports.showChildren = showChildren;
exports.addNewCompany = addNewCompany;
exports.deleteCompany = deleteCompany;