Question

我的两个函数出现expected resource or concept错误。根据hyperledger composer API示例，我正在创建Concept和Resource并以正确的方式分配它们的值。

我的代码的作用：

createUser()
User包含一个名为UserData的概念，它由四个字符串字段组成。我尝试创建一个新用户，首先创建一个新的UserData概念并更新其字段，然后将用户的userData设置为这个新概念。

grantAccess()
按ID在注册表中搜索用户，并将其access值设置为true。

这两个函数抛出Error: Error trying invoke business network. Error: No valid responses from any peers. Response from attempted peer comms was an error: Error: chaincode error (status: 500, message: Error: Expected a Resource or Concept.)

.cto：

namespace org.acme.biznet

concept UserData {
    o String name
    o String id
    o String postcode
    o String birthdate
}

participant User identified by userId {
    o String userId
    o String name
    o UserData userData
    o Boolean access
}

transaction createUser {
  o UserData newUserData
}

transaction grantAccess {
    o String userId
}

event NewUserCreated {
    o User user
}

event UserAccessRightsChanged {
    o User user
    o Boolean oldValue
    o Boolean newValue
}

的.js：

/**
* Creates a new user.
* @param {org.acme.biznet.createUser} createUser The create user transaction.
* @transaction
*/    
function createUser(createUser) {

    // create new instance of a User
    var factory = getFactory();
    var newUser = factory.newResource('org.acme.biznet', 'User', '123');
    var newData = factory.newConcept('org.acme.biznet', 'UserData');

    newData.name = createUser.newUserData.name;
    newData.id = createUser.newUserData.id;
    newData.postcode = createUser.newUserData.postcode;
    newData.birthdate = createUser.newUserData.birthdate;

    newUser.userData = newData;

    return getParticipantRegistry('org.acme.biznet.User')
    .then(function (userRegistry) {
        return userRegistry.update(createUser.user);
    })
    .then(function () {
        // Emit an event for the new user creation.
        var event = getFactory().newEvent('org.acme.biznet', 'NewUserCreated');
        event.user = newUser;
        emit(event);
    });
}

/**
* Grants access to the user data.
* @param {org.acme.biznet.grantAccess} userGrantAccess The grantAccess transaction.
* @transaction
*/
function grantAccess(userGrantAccess) {

    var existingAccessValue;
    var theUser;

    // Get the user from the registry given the id
    getParticipantRegistry('org.acme.biznet')
        .then(function (participantRegistry) {
            // Get the specific User from the participant registry.
            return participantRegistry.get(userGrantAccess.userId);
        })
        .then(function (user) {
            theUser = user;
            existingAccessValue = user.access;
            user.access = true;
        });

    // Get and update the user registry
    return getParticipantRegistry('org.acme.biznet.User')
        .then(function (userRegistry) {
            return userRegistry.update(theUser);
        })
        .then(function () {
            // Emit an event for the modified user rights.
            var event = getFactory().newEvent('org.acme.biznet', 'UserAccessRightsChanged');
            event.user = theUser;
            event.oldValue = existingAccessValue;
            event.newValue = theUser.access;
            emit(event);
        });
}

Answer 1

此简化功能（基于Bond Sample网络）在Composer Playground中运行 - 使用修改后的模型。

＆＃13;

/**
 * Creates a New User
 * @param {org.acme.biznet.CreateUser} cUser 
 * @transaction
 */
function createUser(cUser) {
console.log(cUser)
    return getParticipantRegistry('org.acme.biznet.User')
        .then(function (registry) {
            var factory = getFactory();
            // Create the user
            var user = factory.newResource('org.acme.biznet', 'User', cUser.newuserId);
            user.name = cUser.newname;
            user.userData = cUser.newuserData;
            user.access = cUser.newaccess;
            // Add the bond asset to the registry.
            return registry.add(user);
        });
}

＆＃13;

修改后的模型：

namespace org.acme.biznet

concept UserData {
    o String name
    o String id
    o String postcode
    o String birthdate
}

participant User identified by userId {
    o String userId
    o String name
    o UserData userData
    o Boolean access
}

transaction CreateUser {
    o String newuserId
    o String newname
    o UserData newuserData
    o Boolean newaccess
}

transaction grantAccess {
    o String userId
}

event NewUserCreated {
    o User user
}

event UserAccessRightsChanged {
    o User user
    o Boolean oldValue
    o Boolean newValue
}

Hyperledger-composer：预期的资源或概念

1 个答案: