Basic mode - JSON source

Import Trevas Jackson module

<dependency>
    <groupId>fr.insee.trevas</groupId>
    <artifactId>vtl-jackson</artifactId>
    <version>1.7.0</version>
</dependency>

SchEma

The JSON representation of a Dataset is defined as follows:

{
	"dataStructure": [
		{ "name": "id", "type": "STRING", "role": "IDENTIFIER" },
		{ "name": "x", "type": "INTEGER", "role": "MEASURE" },
		{ "name": "y", "type": "FLOAT", "role": "MEASURE" }
	],
	"dataPoints": [
		["0001", 10, 50.5],
		["0002", 20, -8],
		["0003", 1000, 0],
		["0004", 1, 4.5]
	]
}

Usage of the vtl-jackson module

Global declaration

The module can be globally declared at the scope of the client project.

public ObjectMapper objectMapper() {
    return new ObjectMapper()
            .registerModule(new TrevasModule());
}

Deserialization example

ObjectMapper objectMapper = new ObjectMapper();
objectMapper.readValue(json, Dataset.class);