i'm new in MongoDB.
I'm try to do MapReduce in some BD. I define a map Function and a reduce function, but when i try to run mapReduce command it say "this.items is undefined".
Here is my code:
var mapFunction = function () {
for (var i = 0; i < this.items.length; i++) {
var key = this.items[i].Color;
var obValue = {genero: this.items[i].Gender,
cinturon: this.items[i].Belts,
work_zone: this.items[i]["Work Zone"]};
emit(key, obValue);
}
};
var reduceFunction = function (key, arValues){
var nuCount = 0;
for (var i = 0; i < arValues.length; i++){
var obValue = arValues[i];
if (obValue.genero == "F" && obValue.cinturon == "No" && obValue.work_zone == "No"){
nuCount += 1;
}
}
return nuCount;
};
db.trafic.mapReduce(mapFunction, reduceFunction, {out:"map_color_result"})
Related
I'm creating a Gmail script that includes 5 variables, one of which is a due date. I just want it to populate as MM/DD/YYYY, however, it is currently populating as Thu Sep 13 2018 00:00:00 GMT-0400 (EDT).
Is there a way I can do that? I've pasted my code below for your reference. Any assistance is much appreciated.
function getRowsData(sheet, range, columnHeadersRowIndex) {
columnHeadersRowIndex = columnHeadersRowIndex || range.getRowIndex() - 1;
var numColumns = range.getEndColumn() - range.getColumn() + 1;
var headersRange = sheet.getRange(columnHeadersRowIndex, range.getColumn(), 1, numColumns);
var headers = headersRange.getValues()[0];
return getObjects(range.getValues(), normalizeHeaders(headers));
}
function getObjects(data, keys) {
var objects = [];
for (var i = 0; i < data.length; ++i) {
var object = {};
var hasData = false;
for (var j = 0; j < data[i].length; ++j) {
var cellData = data[i][j];
if (isCellEmpty(cellData)) {
continue;
}
object[keys[j]] = cellData;
hasData = true;
}
if (hasData) {
objects.push(object);
}
}
return objects;
}
function normalizeHeaders(headers) {
var keys = [];
for (var i = 0; i < headers.length; ++i) {
var key = normalizeHeader(headers[i]);
if (key.length > 0) {
keys.push(key);
}
}
return keys;
}
function normalizeHeader(header) {
var key = "";
var upperCase = false;
for (var i = 0; i < header.length; ++i) {
var letter = header[i];
if (letter == " " && key.length > 0) {
upperCase = true;
continue;
}
if (!isAlnum(letter)) {
continue;
}
if (key.length == 0 && isDigit(letter)) {
continue;
}
if (upperCase) {
upperCase = false;
key += letter.toUpperCase();
} else {
key += letter.toLowerCase();
}
}
return key;
}
function isCellEmpty(cellData) {
return typeof(cellData) == "string" && cellData == "";
}
function isAlnum(char) {
return char >= 'A' && char <= 'Z' ||
char >= 'a' && char <= 'z' ||
isDigit(char);
}
function isDigit(char) {
return char >= '0' && char <= '9';
var theXML:XML = new XML();
theXML.ignoreWhite = true;
theXML.onLoad = function()
{
var nodes = this.firstChild.childNodes;
for(i = 0; i < nodes.length; i++)
{
theList.addItem(nodes[i].firstChild.nodeValue, i);
}
};
theXML.load("http://localhost/xampp/phpflash/account.php");
These are the errors:
-1120: Access of undefined property i.
-1137: Incorrect number of arguments. Expected no more than 1.
I'm so newbie on this subject. Please help me with your kind and consideration.
1: you should declare i.
2: addItem function should only have one argument.
var theXML:XML = new XML();
theXML.ignoreWhite = true;
theXML.onLoad = function()
{
var nodes = this.firstChild.childNodes;
for(var i:int = 0; i < nodes.length; i++)
{
theList.addItem(nodes[i].firstChild.nodeValue);
}
};
theXML.load("http://localhost/xampp/phpflash/account.php");
I have collection of data in Mongodb, i want to give best matches suggestion while user input query in our suggestion box,
when user start typing com suggestion should be:
Computer
Computer Science
something more alike
I am sorting in Node by getting all matched data from mongo first and then give a rank to each data
function rank(name, q) {
var len = name.length,
lastIndex = -1;
for(var i = 0; i < q.length; i++) {
var n = name.indexOf(q[i], (lastIndex + 1));
if(n !== -1) {
len--;
lastIndex = n;
}
}
return len;
}
var query = 'com';
// giving rank to data
data = data.map(function(v) {
v.rank = rank(v.value, query);
return v;
});
// sorting by rank
data = data.sort(function(a, b) {
return a.rank - b.rank
});
It is giving me satisfied result, but it will be too slow while dealing with large data.
I want let mongodb engine to deal with sorting and give me just limited best matches result.
Maybe you could do it through mapreduce. Map-reduce is a data processing paradigm for condensing large volumes of data into useful aggregated results.
var mapFn = function(){
var len = this.name.length,
lastIndex = -1;
var q = 'com';
for(var i = 0; i < q.length; i++) {
var n = this.name.indexOf(q[i], (lastIndex + 1));
if(n !== -1) {
len--;
lastIndex = n;
}
}
emit(len, this);
};
var reduceFn = function(key, values){
return values.sort(function(a,b){
return a.name - b.name;
});
};
db.collection.mapReduce(mapFn, reduceFn, { out: { reduce: 'result_collection'}});
I am having an issue with a script. I used the following script from Google Developers Website in order to do a simple merge mail. See https://developers.google.com/apps-script/articles/mail_merge
I modified a bit the script so to prevent email duplicates. However, even if the script seems to work as it marks 'EMAIL_SENT' in each row every time an email is sent. It does not pay attention if the mail as already been marked and still send the mail.
I believe there is an error at line 16 "var emailSent = rowData[6];"
I would really appreciate if someone could help me. Whoever you are thanks in advance.
Here is the modified script :
var EMAIL_SENT = "EMAIL_SENT";
function sendEmails() {
var ss = SpreadsheetApp.getActiveSpreadsheet();
var dataSheet = ss.getSheets()[0];
var dataRange = dataSheet.getRange(2, 1, dataSheet.getMaxRows() - 1, 7);
var templateSheet = ss.getSheets()[1];
var emailTemplate = templateSheet.getRange("A2").getValue();
var objects = getRowsData(dataSheet, dataRange);
for (var i = 0; i < objects.length; ++i) {
var Resume = DriveApp.getFilesByName('Resume.pdf') var Portfolio = DriveApp.getFilesByName('Portfolio.pdf') var rowData = objects[i];
var emailText = fillInTemplateFromObject(emailTemplate, rowData);
var emailSubject = "Architectural Internship";
var emailSent = rowData[6];
if (emailSent != EMAIL_SENT) {
MailApp.sendEmail(rowData.emailAddress, emailSubject, emailText, {
attachments: [Resume.next(), Portfolio.next()]
});
dataSheet.getRange(2 + i, 7).setValue(EMAIL_SENT);
SpreadsheetApp.flush();
}
}
}
function fillInTemplateFromObject(template, data) {
var email = template;
var templateVars = template.match(/\${\"[^\"]+\"}/g);
for (var i = 0; i < templateVars.length; ++i) {
var variableData = data[normalizeHeader(templateVars[i])];
email = email.replace(templateVars[i], variableData || "");
}
return email;
}
function getRowsData(sheet, range, columnHeadersRowIndex) {
columnHeadersRowIndex = columnHeadersRowIndex || range.getRowIndex() - 1;
var numColumns = range.getEndColumn() - range.getColumn() + 1;
var headersRange = sheet.getRange(columnHeadersRowIndex, range.getColumn(), 1, numColumns);
var headers = headersRange.getValues()[0];
return getObjects(range.getValues(), normalizeHeaders(headers));
}
function getObjects(data, keys) {
var objects = [];
for (var i = 0; i < data.length; ++i) {
var object = {};
var hasData = false;
for (var j = 0; j < data[i].length; ++j) {
var cellData = data[i][j];
if (isCellEmpty(cellData)) {
continue;
}
object[keys[j]] = cellData;
hasData = true;
}
if (hasData) {
objects.push(object);
}
}
return objects;
}
function normalizeHeaders(headers) {
var keys = [];
for (var i = 0; i < headers.length; ++i) {
var key = normalizeHeader(headers[i]);
if (key.length > 0) {
keys.push(key);
}
}
return keys;
}
function normalizeHeader(header) {
var key = "";
var upperCase = false;
for (var i = 0; i < header.length; ++i) {
var letter = header[i];
if (letter == " " && key.length > 0) {
upperCase = true;
continue;
}
if (!isAlnum(letter)) {
continue;
}
if (key.length == 0 && isDigit(letter)) {
continue;
}
if (upperCase) {
upperCase = false;
key += letter.toUpperCase();
} else {
key += letter.toLowerCase();
}
}
return key;
}
// Returns true if the cell where cellData was read from is empty. // Arguments: // - cellData: string function isCellEmpty(cellData) {
return typeof(cellData) == "string" && cellData == "";
}
// Returns true if the character char is alphabetical, false otherwise. function isAlnum(char) { return char >= 'A' && char <= 'Z' || char >= 'a' && char <= 'z' || isDigit(char); }
// Returns true if the character char is a digit, false otherwise. function isDigit(char) { return char >= '0' && char <= '9'; }
Your code is really hard to read and the functions that return 2 or more objects make it even harder...you are using variable names that are also a bit confusing.... but that is probably a personal pov :-)
Anyway, I think I've found the issue: when you write var rowData = objects[i];
This "object" is actually the result of the getRowData function but if you look at this function, you'll see that it returns 2 objects, the first one being itself the result of another function (getObjects) ...
You are checking the value is the 6th element of the array which is actually an object and compare it to a string. The equality will never be true.
I didn't go further in the analyse since I found it really confusing ( as I already said) but at least you have a first element to check .
I would suggest you rewrite this code in a more simple way and use more appropriate variable names to help you while debugging.
I would recommend logging both values before executing to make sure they are the same. I would also guess that the email_sent and EMAIL_SENT are different data types. Can also try forcing the value to string for comparison.
To clarify:
logger.Log(emailSent);
logger.Log(EMAIL_SENT);
if (emailSent.toString() != EMAIL_SENT.toString())
{...
Error is in this line of code -
var dataRange = sheet.getRange(startRow, 1, numRows, 2)
It's considering only 2 columns in the range. Changed 2 to 3 and it worked fine.
function getElementsByClassName(className)
{
// get all elements in the document
if (document.all)
{
var allElements = document.all;
}
else
{
var allElements = document.getElementsByTagName("*");
}
var foundElements = [];
for (var i = 0, ii = allElements.length; i < ii; i++)
{
if (allElements[i].className == className)
{
foundElements[foundElements.length] = allElements[i];
}
}
return foundElements;
}
var listItems = document.getElementsByClassName("quirky");
for (var i = 0, ii = listItems.length; i < ii; i++)
{
alert(listItems[i].nodeName);
}
getElementsByClassName = (className) ->
# get all elements in the document
if document.all
allElements = document.all
else
allElements = document.getElementsByTagName "*"
el for el in allElements when el.className == className
# NOTE: getElementsByClassName was never assigned as a member
# of document. So this call will likely fail, unless you are
# using a latest-version browser.
listItems = document.getElementsByClassName "quirky"
for i in listItems
alert i.nodeName