Contracts

linderpascal · March 2016

Hei guys, after reading the documentation about contracts i understood how to use contracts and also how to reuse them. But one thing that i dont understand is how i can list them like the "normal" accounts?

Thanks for the answers

Pascal

linderpascal · April 2016

To answer my question. I think there are two ways:
Firstly you could build a database synchronous to the chain. In the db you put in the address plus the abi and if you want a name. So you have the opportunity to get the contracts by name or address.
Last but not least there is a registrar which i builded in my private network.
Code here:


contract About
{
struct About
{
string _name;
string _description;
}
About[] public aboutArray;

function getLength() returns (uint256 _length)
{
_length=aboutArray.length;
}
function remove(uint256 _index) internal
{
delete aboutArray[_index];
}
}

contract RegistrarModel
{
function name(address _address) returns (string _name);
event New(uint256 indexed statusCode, string message);
}

contract ContractRegistrarModel is About,RegistrarModel
{
function cont(string _name) returns (address _address,string _abi);
}

contract ContractRegistrar is ContractRegistrarModel
{
mapping (string => ContractStruct) mapContract;
mapping (address => string) mapName;

struct ContractStruct
{
address _address;
string _abi;
uint256 _index;
}

function registrar(string _name, address _address, string _abi, string _description)
{
if(mapContract[_name]._address!=0x0)
{
remove(mapContract[_name]._index);
}
mapContract[_name]=ContractStruct(_address,_abi,aboutArray.length);
mapName[_address]=_name;
aboutArray[aboutArray.length++]=About(_name,_description);

New(1,"success");
}
function name(address _address) returns(string _name)
{
_name=mapName[_address];
}

function cont(string _name) returns(address _address, string _abi)
{
_address=mapContract[_name]._address;
_abi=mapContract[_name]._abi;
}

}

Its not the final verison. I have to implement a suicide function for saving storage.

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