The Secret of Successful HADOOP COURSE

by Simran Aggarwal your beauty our passion

We have just learned how to download data from our database. Right now all you have to do is just process data. So I will use the children and the snapshot the value of the children. OK. So let me just comment this out so you will now have to print Glenda's but we won't be using that. OK. And what I will do here is just create a for you. I will say for every Hadoop course snapshot in data in PS K that children and actually we need to do it like this. we can do it like this. Zero children, it means that go to a loop in every child of this snapshot. OK. They take a snapshot. And now I will just dive into this snapshot that's of value to find and find every individual post of my own. so I will say I will cast this as a hash map because why. Because I need to have a download.

What is Big Data Hadoop?

You're out this thing. I need to have the comment and distinct user e-mail and this. So as we did in Jason we need to have a hash map saying that she is that the values that she is that values that she is using your email value are James So I will say the hash map is snapshot data value as hash map string. So that is the same thing I do in Jason and this data looks like Jaison to a fair OK. And later on, I will just say hi map that size is greater than online marketing courses actually zero if I have any value in that. OK. I will create an email saying that hash map user email and I will create a command map command. This has to be exact wording like this. Use your e-mail command and download you are of an image hash map down on yours.

1. I will add all these values in my array lists. So I will say f email is not null e-mail user e-mail from firebase that adds. If comments are not now our Hadoop course comments user comments from firebase at comments.

2. So that's how we roll. That's how we add the necessary information. Our database in our aerialists. And then I will just say adapter Dotts notify data change. And before we go on and do does loop I will also clear the adapter.

3. I will clear the user image from firebase user command from firebase end-user email from firebase to avoid any confusion to avoid any dupped tickets inside this class.

Scope of Hadoop course:

So let us try that. And see if we can get this. They tell us and show it to the user. We're adding them to our are lists and then connecting down a list are least through when they recapture and they were getting together. So let's sign an. And here we go we have an error. Let's see what the error is. I think what we need to do here not returning this superb thing. Because of why. Because we actually created it right. So we have created a custom view but rather Hadoop course than turning it we are turning this super dot. So I will say we turn custom. Sorry about that. I hope you have recognized it yourselves. And before me, you change and that has you debugged things. That's how you find the errors and just make them right.

1. ut facing any errors it isn't really a program. And as you can see we now see James and the nice of you. Thanks. OK. Let me add some new polls. And this time this will be canal city. Let me upload this and see ya, Meekins. Just see the nice city as well. All we have to Hadoop course do now is find a way to show the user dizzying image. We have the euro but we cannot show it to the user. And that's what's that's what we're going to do in the following lecture. So we will use this to connect our lists with you with this adapter and with a relay to date us.

2. that you will just understand this better. OK. So for now if you didn't understand what's going on I guarantee you will in a minute just keep on watching. I will just overwrite some functions OK so I will say generate override methods and what I need is get we get this one. So within this or write function, I will Hadoop course write what I need to write so I will have a layout. Inflator. Like many inflators and this will be the context that layout inflator and I will define my custom view and layout inflator dot inflate our DOT Kustom, you dude. I don't need any. Takes you. Yeah. So custom view. Now I can just reach my custom view objects like custom UV dot custom user name.

Conclusion:

This will be using email. OK. The position is the position. So this will say this will take everything. By the way custom user named uptakes, this will just gap to relate to the position of the user email and match it to the were late to the custom you text. Ok so this is the same logic that we do in the least Viiv But now we're doing it custom we're Hadoop course doing it manually. So this will be the same thing for custom command text. Again user comments position. I will, later on, show you how to work with user images for right now. We have created our custom view and we will connect it with our feed activity in the next election.