Code Quality · JetBrains plugin
Object Mapper Reuse Companion
FreeObject Mapper Reuse
Gutter warning icon on a Jackson mapper (ObjectMapper, XmlMapper, YAMLMapper, CBORMapper, CsvMapper) built via new inside a regular method body: Jackson's own javadoc states ObjectMapper is "meant to be used as singleton across the lifetime of the application... also very expensive to create". Building one inside a method means the real construction/configuration cost is paid on eve
The gap it fixes
new ObjectMapper() reads like a harmless local variable, but Jackson's own docs are explicit that it's meant to be a singleton — every construction pays real, avoidable cost. Nothing in the IDE flags a mapper built the wrong way today.
Facts and pricing
- Category
- Code Quality
- Pricing
- Free
- Platform
- IntelliJ-family
- First published
- 2026-08-25
- Marketplace ID
- #33807
- Repository
object-mapper-reuse-companion- Growth
- New listing
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