Overview

Jackson is a fast JSON processor for Java that supports three models: streaming, node, and object mapping (akin to the three independent models SAX, DOM, and JAXB in XML).

The object mapping model is a high-level processing model that allows the user to project JSON data onto a domain-specific data model appropriate for their application, without having to deal with the low-level mechanics of JSON parsing. It is the standard object mapping parser implementaton in Jersey, the reference implementation for JSR-311 (Java API for Restful Web Services).

Scala is a functional programming language for the JVM that supports Java interoperability. Its standard library is quite distinct from Java, and does not fulfill the expectations of Jacksons default mappings. Notably, Scala collections do not derive from java.util.Collection or its subclasses, and Scala properties do not (by default) look like Java Bean properties.

The Scala Module supports serialization and limited deserialization of Scala Case Classes, Sequences, Maps, Tuples, Options, and Enumerations.

Usage

To use the Scala Module in Jackson, simply register it with the ObjectMapper instance:

val mapper = new ObjectMapper()
mapper.registerModule(DefaultScalaModule)

DefaultScalaModule is a Scala object that includes support for all currently supported Scala data types. If only partial support is desired, the component traits can be included individually:

val module = new OptionModule with TupleModule {}
val mapper = new ObjectMapper()
mapper.registerModule(module)

Consult the Scaladoc for further details.

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hvesalai/jackson-module-scala

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