jackson.groovy

@Grab(
    group='org.codehaus.jackson',
    module='jackson-mapper-asl',
    version='1.9.11')
import org.codehaus.jackson.map.*
import org.codehaus.jackson.annotate.*
import groovy.transform.*

@Canonical
class MachineConfig {
    int stock
    boolean price
}

@Canonical
@JsonTypeName("setMachineConfig")
@JsonTypeInfo(use = JsonTypeInfo.Id.NAME, include = JsonTypeInfo.As.WRAPPER_OBJECT)
class SetMachineConfigCommand {
    @JsonUnwrapped MachineConfig config
}

command = '''
{
    "setMachineConfig": {
        "stock": 1,
        "price": false
    }
}
'''
println new ObjectMapper().readValue(command, SetMachineConfigCommand)


@Canonical
@JsonTypeName("getMachineConfig")
@JsonTypeInfo(use = JsonTypeInfo.Id.NAME, include = JsonTypeInfo.As.WRAPPER_OBJECT)
class GetMachineConfigRequest {
    @JsonUnwrapped MachineConfig config
}

request = '''
{
    "getMachineConfig": {
        "stock": 1,
        "price": false
    }
}
'''
println new ObjectMapper().readValue(request, GetMachineConfigRequest)