Draft for jackson mapping of a row onto an object

[rainbowdashlabs]

Draft for mapping a row onto a POJO using jackson.

Creation of a mapper supporting Jackson

        // Create a Registry for mapping the types of a database to java objects.
        RowMapperRegistry registry = new RowMapperRegistry().register(PostgresqlMapper.getDefaultMapper());
        // Wrap the database registry into a jackson registry
        JacksonRowMapperRegistry jacksonRegistry = new JacksonRowMapperRegistry(new ObjectMapper().findAndRegisterModules(), registry);
        // Register the jackson registry at the query configuration
        QueryConfiguration.setDefault(QueryConfiguration.builder(dc)
                .setRowMapperRegistry(jacksonRegistry)
                .build());

The java object

public record TestObj(int first, long second, String third, Instant fourth, UUID fifth) {
}

Quick and quite simple poc test

query("INSERT INTO test(first, second, third, fourth, fifth) VALUES (?,?,?,?,?::UUID)")
        .single(call().bind(obj.first()).bind(obj.second()).bind(obj.third()).bind(obj.fourth(), INSTANT_TIMESTAMP).bind(obj.fifth(), UUID_STRING))
        .insert();

var result = query("SELECT first, second, third, fourth, fifth::UUID FROM test")
        .single()
        .mapAs(TestObj.class)
        .first()
        .get();

Assertions.assertEquals(obj, result);