fix indexing arbitrary long Bytes

Author: PierreJeanjacquot

schema.graphql

@@ -392,8 +392,8 @@ type Task @entity {
   contributions: [Contribution!]!
   consensus: Bytes # set on consensus reached
   resultDigest: Bytes # set on reveal
-  results: Bytes # set on finalized
-  resultsCallback: Bytes # set on finalized
+  results: String # set on finalized
+  resultsCallback: String # set on finalized
   contributionDeadline: BigInt!
   revealDeadline: BigInt # set on consensus reached
   finalDeadline: BigInt!

src/Modules/IexecPoco.ts

@@ -367,8 +367,10 @@ export function handleTaskFinalize(event: TaskFinalizeEvent): void {
 
   let task = fetchTask(event.params.taskid.toHex());
   task.status = "COMPLETED";
-  task.results = event.params.results;
-  task.resultsCallback = contract.viewTask(event.params.taskid).resultsCallback;
+  task.results = event.params.results.toHexString();
+  task.resultsCallback = contract
+    .viewTask(event.params.taskid)
+    .resultsCallback.toHexString();
   task.timestamp = event.block.timestamp;
   task.save();