linera-io/linera-protocol

Create examples of Custom{Map,Collection}View for ordered integers (and use them)

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#5,604 opened on Mar 5, 2026

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good first issue

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Description

We use integers as keys in many places (procotol and examples) but usually without a custom key serialization. As a result, graphql queries show keys ordered by little-endian bytes.

See AskPrice and BidPrice in the matching engine example.

Contributor guide

Research direction
Implement custom key serialization for integer keys in Custom{Map,Collection}View to ensure correct ordering in GraphQL queries. Create examples using AskPrice and BidPrice from the matching engine.
Tech stack
rustgraphql
Domain
backend
Issue type
Feature
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
2
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
1-3 hours
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
Active
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
Mostly clear
Prerequisites
GitRust
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
65