I have a problem with a very simple Hyperledger Composer applicationnamespace com.softwaremill.drivernetwork
participant Driver identified by licenseId {
o String licenseId
o String firstName
o String lastName
o Boolean licenseValid default =true
}
enum LaweEnforcerType {
o POLICE
o CUSTOMS
o BORDER_GUARDS
}
participant LawEnforcer identified by lawEnforcerId {
o String lawEnforcerId
o LaweEnforcerType lawEnforcerType
}
participant Court identified by courtId {
o String courtId
o String description
}
enum FineState {
o ISSUED
o REJECTED
o ACCEPTED
}
asset Fine identified by fineId {
o String fineId
o Integer penaltyPoints
o DateTime date
o FineState fineState default ="ISSUED"
--> Driver driver
--> LawEnforcer lawEnforcer
}
asset CourtCase identified by caseId {
o String caseId
--> Court court optional
--> Fine fine
}
transaction AcceptedFine {
--> Fine fine
}
transaction RejectedFine {
--> Fine fine
}
LawEnforcer can issue a Fine. The Fine can be either Accepted or Rejected (then it goes to Court) by the driver.
What I am trying to do is to automatically invalidate the driver's license if the sum of all his accepted penaltyPoints on Fines exceeds 20 points.
So I have created a transaction processor
/**
* Accept fine
* @param {com.softwaremill.drivernetwork.AcceptedFine} acceptedFine
* @transaction
*/
async function acceptedFine(acceptedFine) {
console.log(`Accepting fine ${acceptedFine}`);
const fineRegistry = await getAssetRegistry('com.softwaremill.drivernetwork.Fine');
acceptedFine.fine.fineState = 'ACCEPTED';
await fineRegistry.update(acceptedFine.fine); // [1]
const allFines = await query('selectAcceptedFinesByDriver',
{driver: `resource:com.softwaremill.drivernetwork.Driver#${acceptedFine.fine.driver.licenseId}`}); // [2]
if (allFines.reduce((acc, val) => {return acc + val.penaltyPoints;}, 0) > 20) {
console.log('Driver excceded 20 points, blocking license');
const driverRegistry = await getParticipantRegistry('com.softwaremill.drivernetwork.Driver');
acceptedFine.fine.driver.licenseValid = false;
await driverRegistry.update(acceptedFine.fine.driver);
}
}
And the query code
query selectAcceptedFinesByDriver {
description: "Select all accepted fines for a given driver"
statement:
SELECT com.softwaremill.drivernetwork.Fine
WHERE (driver == _$driver AND fineState == "ACCEPTED")
}
Now the code should set the Fine state to ACCEPTED at [1]. This works - after the transaction is processed I am able to see the property changed.
But the problem is that at [2] when the query is executed the Fine that just got updated at [1] has still status ISSUED (I've removed the right part of wherein the query to debug it).
What am I missing here? Is the shape of the blockchain someone frozen for the transaction? What is going on?
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