Register Account - smart contract

In this section, we examine how worker proposal smart contract was constructed. There are items and helpful steps to construct a smart contract. We want to list those items by examining BitShares blockchain components. * Smart contract items

• Object
• Object Index and Call
• Operations
• Validations
• Initialize Evaluators and Index
• Evaluators
• API call

---

Items

Object

• account_object

Object Index and Search Call

• account_member_index
• account_referrer_index
• get_account( registrar_account )

Operations

• account_create_operation
• signed_transaction tx; - struct signed_transaction : public transaction

Validations

• tx.validate();

processed_transaction database::validate_transaction( const signed_transaction& trx )
{
   auto session = _undo_db.start_undo_session();
   return _apply_transaction( trx );
}

Initialize Evaluators and Index

void database::initialize_evaluators()
{
   _operation_evaluators.resize(255);
   register_evaluator<account_create_evaluator>()
   .......
}

• class generic_evaluator
• class op_evaluator

void database::initialize_indexes()
{
   reset_indexes();
   _undo_db.set_max_size( GRAPHENE_MIN_UNDO_HISTORY );

   .....
}


void database::init_genesis(const genesis_state_type& genesis_state)
{ try {
.....

}}

Evaluators

class account_create_evaluator : public evaluator<account_create_evaluator>
{
public:
   typedef account_create_operation operation_type;

   void_result do_evaluate( const account_create_operation& o );
   object_id_type do_apply( const account_create_operation& o ) ;
};

CLI Wallet Calls

API calls

signed_transaction register_account(string name,
                                     public_key_type owner,
                                     public_key_type active,
                                     string  registrar_account,
                                     string  referrer_account,
                                     uint32_t referrer_percent,
                                     bool broadcast = false)

---

broadcast transaction

Before the end a method, as one of patterns,

• signed_transaction instance is created,
• (do some processes…)
• check `broadcase1 flag
• if true, send the instance bt broadcast_transaction

and return the transaction instance

signed_transaction tx;
// do some processes...
..........
if( broadcast )
      _remote_net_broadcast->broadcast_transaction( tx );

return tx;

other methods that have the same pattern return (wallet.cpp)

• register_account
• create_account_with_private_key
• sign_transaction
• blind_transfer_help