How do I create a multiple indexes using a script/file so that I can run it in the shell and create all the indexes in one action?
The info is listed here: http://docs.mongodb.org/manual/tutorial/write-scripts-for-the-mongo-shell/
Do I create a javascript file (.js) and just list all the ensureIndexes one after another like:
db.data1.ensureIndex(..)
db.data2.ensureIndex(..)
db.data3.ensureIndex(..)
db.data4.ensureIndex(..)
Is this syntactically correct? Is this going to compile?
Basically you are right.
You write a js function in a file
a = {}
a.b = function(){
db.coll.createIndex(<options>);
// do all other things
}
a.c = function(){
// something else
}
then load js
load("jsfile.js")
then execute your function a.b();
What problems do you have with your code? What do you mean by compile?
Related
Using Vert.x JavaScript (3.8.4), I want to dynamically load a JAR file at runtime. This is necessary because that file might not exist when my Vert.x application gets started. Ideally, I would like to be able to use code like this:
// load custom JAR file
requireJar("path/to/dynamic.jar");
// use class from dynamically loaded package
var instance = new com.mydynamicpackage.MyCustomClass();
How can I achieve this?
You might find this answer to be helpful:
How to access external JAR files from JavaScript using Rhino and Eclipse?
Another approach that is valid would be to provide the jar with other means, i.e. not via a javascript implementation, to check afterwards, if it is available and then deal with the case if it is not.
java.lang.Class.forName( 'com.mydynamicpackage.MyCustomClass' )
This will throw an error, if MyCustomClass does not exist.
Loading jars at runtime might not be a good idea if you cannot determine they are loaded from a not trustworthy source. This is at least true for the java world.
Based on this answer, I have created the following JavaScript function for dynamically loading a class from a JAR file:
var requireJavaClass=(function(){
var method=java.net.URLClassLoader.class.getDeclaredMethod("addURL",java.net.URL.class);
method.setAccessible(true);
var cache={};
var ClassLoader=java.lang.ClassLoader;
var File=java.io.File;
return function(classname,jarpath){
var c=cache[classname];
if (c) return c;
if (jarpath) {
var cl=ClassLoader.getSystemClassLoader();
method.invoke(cl,new File(jarpath).toURI().toURL());
cl.loadClass(classname);
}
return cache[classname]=Java.type(classname);
}
})();
The equivalent to the snippet I posted in the my question would be:
var MyCustomClass=requireJavaClass("com.mydynamicpackage.MyCustomClass","path/to/dynamic.jar");
var instance = new MyCustomClass();
So far, I have only tested this with Vert.x 3.8.5 running in JRE8, i.e. I can't say if this also works in older Vert.x versions or with JRE9+.
Actually I want to get user input from user whoever runs the script. I do not want to hardcode the testdata path in the script. for example when I run a script to test angularjs using protractor and javascript. User should be able to give path of the testdata, so that I can use that variable inside the script.
You can do this by passing in a params.testData value from the command line.
protractor conf.js --params.testData=D:\path\to\testdata.xlsx
Then in your test you will reference it using the global browser.params object. You will also need to use fs to read the file and process the data. Honestly, it would probably be easier if you created a .json file for the test data instead of an .xlsx but it looks there are libraries out there to help you parse an xlsx document already if you have to stick with that. Check this answer for some examples.
This code will not work as is but the basic idea will be something like this:
before(() => {
const testDataPath = browser.params.testData;
fs.readFile(testDataPath, (err, data) => {
if(err) { // fail? };
const testData = data;
// do some other stuff with test data ...
});
}
You are going to need to do some additional processing of the data from the .xlsx file to get it in the correct format but this should hopefully help get you on the right path.
I am using the app.coffee coffee script file to create some animations on the framerjs prototyping tool. what i want to achieve is that i have defined a function and i want to call that function on body load. how can i do that in coffeescript?
Code:
changeNumbers = ->
sketch.More_Details_Text.visible = false
sketch.Less_Details_Text.visible = true
expandanimation1.start()
You just call the function in your app.coffee
changeNumbers()
This is executed whenever you open or reload your prototype.
This answer might be too simple but maybe you can explain your problem more if that doesn't help. Are you working in Framer Studio?
if I do expect(img).not.toBe(null) then I get an error:
Error: expect called with WebElement argment, expected a Promise. Did you mean to use .getText()?. I don't want to get the text inside an img, I just want to know if the tag exists on the page.
describe('company homepage', function() {
it('should have a captcha', function() {
var driver = browser.driver;
driver.get('http://dev.company.com/');
var img =driver.findElement(by.id('recaptcha_image'));
expect(img.getText()).not.toBe(null);
});
});
Passes but I'm not sure it is testing the right thing. Changing the id to something that doesn't exist does fail.
How do I properly test for a tag to exist with protractor in a non-angular app context?
Edit 2:
Per Coding Smackdown below, an even shorter answer is now available in protractor:
expect(element(by.id('recaptcha_image')).isPresent()).toBe(true);
Edit 1:
I discovered isElementPresent() today which is just a more readable shortcut for what I described below. See: http://www.protractortest.org/#/api
Usage for you would be:
driver.isElementPresent(by.id('recaptcha_image')).then(function(present){
expect(present).toBe(false);
})
Old answer (this works but the above is more reader friendly)
In general you should use findElements (or $$ which is an alias for findElements by css) if you're not sure a tag will be there. Then test for the array length. FindElement (and $) will just throw an error if it cant find the element.
Therefore instead of
var img =driver.findElement(by.id('recaptcha_image'));
expect(img.getText()).not.toBe(null);
use:
driver.findElements(by.id('recaptcha_image')).then(function(array){
expect(array.length).not.toBe(0);
})
Also, getText() returns a promise which is why you're getting that error.
Using the latest Protractor build you can shorten it down to the following:
expect(element(by.id('recaptcha_image')).isPresent()).toBe(true);
Wasn't sure how to properly title my question, I guess in my case it can also be titled "DOM manipulation not being detected by the scope", but it all depends on the approach of my problem.
To start off, I followed an official example on AngularJS main website with the Projects app which connects with Mongolab. The only difference is I want to add a file input, that reads file name and its lastModifiedDate properties and then applies those values to my form. To make file input work I followed this example here.
I made it work, but the problem is that when values get applied to my form scope is not picking up the changes.
I am doing DOM manipulation in my .apply() function and using $compile too, but something is missing. Or perhaps there's an easier way altogether without doing DOM manipulation?
Here's what I have so far, please take a look at this plunker - http://plnkr.co/edit/mkc4K4?p=preview
(Just click on the plus sign icon to add new entry, then try choosing a file.)
You need to add a watch statement in the CreateCtrl
function CreateCtrl($scope, $location, Movie) {
$scope.inputfile = {};
$scope.movie = {};
$scope.$watch('inputfile.file', function(value){
$scope.movie.filename = value ? value.name : '';
$scope.movie.dateadded = value ? value.lastModifiedDate : '';
})
$scope.save = function() {
Movie.save($scope.movie, function(movie) {
$location.path('/edit/' + movie._id.$oid);
});
};
}
Demo: Sample