SteemJ V0.3.1 has been released - Update #13

coinlend (55) 7 years ago (edited)

Hi @dez1337

I would like to retrieve all comments of a user. I came up with the following code:

List<CommentOperation> commentOperations = new ArrayList<>();

Map<Integer, AccountActivity> accountHistoryCL = steemApiWrapper.getAccountHistory("accountName", 9999, 9999);

 for(AccountActivity activity : accountHistoryCL.values()){
                
    if(activity.getOperations() instanceof CommentOperation){
        
        CommentOperation commentOperation = (CommentOperation)activity.getOperations();
        if(commentOperation.getAuthor().getAccountName().equalsIgnoreCase("accountName")){
            commentOperations.add(commentOperation);
        }
    }
    
}

But this seem to also retrieve blog posts and other stuff?. Is there a better way to retrieve all comments of a specific account?

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dez1337 (63) 7 years ago

Hay @coinlend,

Thank your for your question :) Actually I think you already went for the solution with the best performance 👍

Depending on what you are exactly doing it could boost the performance a lot if you go for a datacollector/datapresenter architecture. The datacollector would periodically insert the comment operations in a db so on a request the presenter only needs to perform a sql query instead of pulling all operations from a steem node for every single request .

Hope that helps at least a bit 💪

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coinlend (55) 7 years ago

Thanks, that helps!

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coinlend (55) 7 years ago

Another question: I tried to run SteemJ on the Google Appengine Cloud, but I get the following error:

Could not reconfigure JMX java.lang.NoClassDefFoundError: java.lang.management.ManagementFactory is a restricted class. Please see the Google  App Engine developer's guide for more details.

Seems to be using classes restricted by Google Appengine. Is there any chance to get this running at the Google Cloud?

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dez1337 (63) 7 years ago

Hay @coinled,

Could you create a GitHub issue for that? I'll try to figger out where this class is used and check if I can remove it.

Thank you and best regards! 💪

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https://github.com/steemit/steem-js/issues/225

coinlend (55) 7 years ago

Thanks for taking the time, I did open an issue:

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sesangsokuro (59) 7 years ago

good! i waited about this about two week. thank you.

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dez1337 (63) 7 years ago

Thank you for your help and for making this project better and better - Let me know if you find more problems :)

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nhj12311 (64) 7 years ago

Hi I am a java developer in Korea.
I am very grateful for your steemj project.
With your steemj I think I can easily develop my project.
Thank you.

dez1337 (63) 7 years ago

Nice to hear that :) I would love to hear about your project!

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nhj12311 (64) 7 years ago (edited)

I do not speak English well and use the Google translation system.
You have to understand this.
Koreans are very interested in steemit.
Koreans are now online auctions through steemit.

Buyers "vote" on sales postings.
Buyers write down the desired price.
The seller discounts the amount (votes / 0.375) from the winning bid.

The interface of steemit is very inconvenient for auction.
I will create a web page that makes this screen easy and convenient.
Here is an example of the screen ui.
Https://cobot.co.kr/kr-market.html
The data interface will use your steemj.
I am very pleased with your interest.

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dez1337 (63) 7 years ago

So far I can follow you so the google translator seems to do a good job :P

Your idea sounds great - Feel free to create a GitHub issue in case of a problem/question. I'll do my best to support you.

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nhj12311 (64) 7 years ago

Thank you ^^

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Link: https://steemit.com/steemit/@shadmannnn/can-steemit-community-help-me-buy-a-macbook-pro-worth-usd2-399-00-for-steemj-and-other-freelance-work-i-do

shadmannnn (47) 7 years ago

Very excited about SteemJ
Wrote about SteemJ in an article
Do read @dez1337 :)

markangeltrueman (67) 7 years ago

Do you know of a good, up to date article on how to set up a local node either in Macosx or in an Ubuntu Server vm? Would like to get into development using this API but struggling to get going.

dez1337 (63) 7 years ago

Hay @markangeltrueman ,

I think the fastes way is a docker image at the moment. You should have a look at @someguy123 s project on GitHub. For me this is the most easisiest way to start a node :)

Beside that you do not need your own node if its only about playing with the api as some witnesses allow you to connect to their node :)

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markangeltrueman (67) 7 years ago

thanks for the response. The Steem In A Box was what i was trying, but getting it configured to accept incoming rpc calls is proving problematic for some reason. I'll keep working on it though :)

dez1337 (63) 7 years ago

Yeah, I know the struggle and also created a post this problem month ago .. 😂 .. good luck mate - Let me know when you get it working :)

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sanjeevm (63) 7 years ago

Following you to know more. I am interested to know how we can post a story using API, also I want to find out posts based on some criteria, is that possible ?

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dez1337 (63) 7 years ago

Thanks for following :)

The question about "How to post a story" has been asked and answered in this issue on GitHub.

To answer your second question: Yes, basically everything is possible - The question is how easy it can be achieved with the Steem API :P Steem supports some basic requests (have a look at the getDiscussion method). If those methods do not fit your needs you can still "scan" all operations on your own by using the getOpsInBlock method.

If you have more questions it would be cool if you could create a GitHub issue for them, because it makes it easier for me to track them and to be aware of things users would like to see in the documentation.

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sanjeevm (63) 7 years ago

Few more questions : how do we know the address of Steem nodes ? Is it officially published somewhere ? And any documentation on how to connect those nodes ?

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dez1337 (63) 7 years ago (edited)

Hay @sanjeevm,

thank you for your interest. The sample on the GitHub main Page shows basically how to connect to a node.

Regarding the documentation: The project is still under heavy development and a lot of stuff is changing from version to version. I know it makes it quite hard to use, but currently I am focusing on functionallity.

I would suggest to just check the methods provided by the SteemAPIWrapper - The Javadoc for the most methods is up to date and should give you first a idea of what is possible.

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secter (52) 7 years ago

Hello
Follow @secter

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