Java wrapper class generator silently ignored error and successfully completed without certain class generation

[kelheor]

So I have a contract with the following declaration:
contract EtherPetToken is ERC721, ERC721Enumerable, ERC721Metadata

I'm using web3j-maven-plugin to generate java wrapper classes.
For a contract with such declaration wrapper class won't be generated and no errors will be generated in output (main problem - hard to figure out what's wrong).

The issue can be fixed by adding this constructor to the contract:
constructor(string name, string symbol) ERC721Metadata(name, symbol)
public
{
}

I think it's bad that I didn't receive any errors if wrapper classes can't be generated.

[iikirilov]

Cannot reproduce.

Can you please provide more information so I can replicate this. A simple version of your EtherPetToken will be fine. I also need you ERC721, ERC721Enumerable and ERC721Metadata.

[kelheor]

ERC721, ERC721Enumerable and ERC721Metadata can be found here: https://github.com/OpenZeppelin/openzeppelin-solidity/tree/master/contracts/token/ERC721

A simple version of EtherPetToken:

contract EtherPetToken is ERC721, ERC721Enumerable, ERC721Metadata {

    string public constant name = "EtherPet";
    string public constant symbol = "EP";
    uint8 public constant decimals = 0;

}

[iikirilov]

I cannot reproduce with web3j 3.6.0 or web3j 4.0.0-alpha - checkout the attached zip which is generated with 3.6.0.
erc721.zip

[kelheor]

Try to remove the constructor from your SampleERC721 contract. I wrote that with constructor there is no issue if you will add ERC721Metadata. But if you will miss constructor, the described issue will happen.

[iikirilov]

Cannot reproduce - generator works fine on 3.6.0 - this may potentially be a deeper issue with the maven plugin itself.

erc721-nocons.zip

[kelheor]

Because I tested now your SampleERC721 and be able to reproduce an issue, I guess you may be right - there might be an issue with maven plugin itself. I attached a sample Idea project to demonstrate an issue.
ERC721Test.zip

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

[iikirilov]

closing as not related to web3j - please open a new issue in the web3j maven plugin repo