trinodb/trino

Update presto-record-decoder and dependent modules to use Optional

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#1,610 opened on Sep 30, 2019

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 (3 comments) (0 reactions) (0 assignees)Java (2,678 forks)batch import
good first issuemaintenance

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Description

Variables such as getFormatHint in DecoderColumnHandle can be null, we should change them to optional

Contributor guide

Research direction
Find all usages of getFormatHint in the presto record decoder module and its dependents, and change the method signature to return Optional<FormatHint> instead of nullable FormatHint. Update all callers accordingly.
Tech stack
java
Domain
backend
Issue type
Refactor
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.
Half day
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.
Clear
Prerequisites
JavaOptional API
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
70