Question

当我尝试在composer-playground中执行事务时，出现错误：预期为资源或概念，并且错误消息显示“期望资源或概念”。交易名称为“ HireEmployee”。

/ *这是我的.cto文件：* /

namespace org.example.basic


/** 
*Asset Job Defenition
*/

enum JobState {
o OPEN
o ON_LIVE
o HIRED
}

concept JobDescription {
o String jobTitle
o String jobdescription
o String skill
o String Duration
}

asset Job identified by jobId {
o String jobId
--> Employer employer
--> Member hiredemployee optional
o Double budget
o JobState state
o JobDescription description
o Bid[] offers optional
}

/**
*Asset Forum Defenition
*/


asset Forum identified by forumId {
  o String forumId
  -->Member owner
  o String question
  o Solution[] solutions optional
}

/**
* Participants of the network
*/


abstract participant User identified by userId {
  o String userId
  o String firstName
  o String lastName
}

participant Member extends User {
 o Double expPoint
 o Double credit
}

participant Employer extends User {
  o Double credit
}

/**
*Transactions
*/

transaction Bid {
  o Double bidPrice
  -->Job job
  -->Member member
}


transaction HireEmployee {
  -->Job job
}

transaction Solution {
  o String answer
  -->Forum forum
  -->Member member

}

/ ** 链码文件 *雇用员工 * @param {org.example.basic.HireEmployee}聘用-聘用 * @交易 * /

async function hireEmployee(hire) {
    const job = hire.job;
    if (job.state !== 'OPEN') {
        throw new Error('This Job is Closed and Someone is Already Hired');
    }

    job.state = 'ON_LIVE';  
    let lowestOffer = null;
    let employee = null;
    let employer =null;

    if (job.offers && job.offers.length > 0) {
        // sort the bids by bidPrice
        job.offers.sort(function(a, b) {
            return (a.bidPrice - b.bidPrice);
        });
        lowestOffer = job.offers[0];
        if (lowestOffer.bidPrice >= 5 ) {
            // mark the job as Hired
            job.state = 'HIRED';
            let employer = job.employer;
            let employee = lowestOffer.member;

            console.log('#### employer balance before: ' + employer.credit);
            employer.credit -= lowestOffer.bidPrice;
            console.log('#### employer balance after: ' + employer.credit);
            // update the balance of the buyer
            console.log('#### Employee balance before: ' + employee.credit);
            employee.credit += lowestOffer.bidPrice;
            console.log('#### buyer balance after: ' + employee.credit);
            // mark the hire employee
            job.hiredemployee = employee;

            job.offers = null;
        }
    }

     // save the bid
    const jobRegistry = await getAssetRegistry('org.example.basic.Job');
    await jobRegistry.update(job);

    if (job.state === 'HIRED') {
        // save the buyer
        const memberRegistry = await getParticipantRegistry('org.example.basic.Member');
        await memberRegistry.update(employee);

        const userRegistry = await getParticipantRegistry('org.example.basic.Employer');
        await userRegistry.update(employer);
    }


}

Answer 1

在函数调用的第一行中，我将“ const”更改为“ let”。通过此修改，我能够在Hyperledger Composer操场上进行测试交易。您能检查一下是否适合您吗？

    import "package:flutter/material.dart";

void main() {
  runApp(MaterialApp(
    debugShowCheckedModeBanner: false,
    title: 'Exploring Ui Widgets',
    home: Scaffold(
      body: getListView(),
    ),
  ));
}

Widget getListView() {
  var listview = ListView(
    children: <Widget>[
      ListTile(
        leading: Icon(Icons.accessible),
        title: Text('Get Up!'),
        subtitle: Text('Use your Legs!'),
        trailing: Icon(Icons.accessible_forward),
        onTap: () {
          // I want to add a AlertDialog here!
        },
      ),
      ListTile(
        leading: Icon(Icons.airline_seat_individual_suite),
        title: Text('Wake Up!'),
        subtitle: Text('Dont Sleep!'),
        trailing: Icon(Icons.airline_seat_flat_angled),
      )
    ],
  );
  return listview;
   }

错误：在超级账本编辑器中需要资源或概念

1 个答案: