one-to-one relations mapping

ok. i allmost got it... sorry for the bug post... i was mapping it in the wrong way... i have one remaining issue:

i found this article explaining how to do what i was trying http://docs.doctrine-project.org/en/latest/tutorials/composite-primary-keys.html#use-case-2-simple-derived-identity

so i mapped my entities this way:

i have an entity named device report: here is the yml for the entity:

Iway\M2M\ApiBundle\Entity\DeviceReport:
type: entity
table: srv_m2m_device_report
repositoryClass: Iway\M2M\ApiBundle\Entity\DeviceReportRepository

id:
id:
column: reportid
type: integer
generator:
generator:
strategy: SEQUENCE
sequenceGenerator:
sequenceName: srv_m2m_device_report_seq
allocationSize: 10
initialValue: 1

manyToOne:
device:
targetEntity: Device
inversedBy: reports
joinColumn:
name: deviceid
referencedColumnName: deviceid

oneToOne:
battery:
targetEntity: ReportBattery
mappedBy: report
fields:
raw_data:
type: string
length: 4000
creation_date:
type: datetime
data_source:
type: string
length: 16
lifecycleCallbacks: { }

the problem is with the battery entity here is the yml:

Iway\M2M\ApiBundle\Entity\ReportBattery:
type: entity
table: srv_m2m_report_battery
repositoryClass: Iway\M2M\ApiBundle\Entity\ReportBatteryRepository

oneToOne:
report:
targetEntity: DeviceReport
inversedBy: battery
joinColumn:
name: reportid
referencedColumnName: reportid

fields:
report_id:
id: true
type: integer
column: reportid
battery_voltage:
type: integer
external_voltage:
type: integer

lifecycleCallbacks: { }

now here is the thing, i can query without any problem on this two entities and joining works well the problem is when i insert:

here is a simple insert in both entities:

$report = new \Iway\M2M\ApiBundle\Entity\DeviceReport();

$report->setDevice($device);
$report->setRawData("Raw data from EMULATOR");
$report->setCreationDate(new \DateTime("now"));
$report->setDataSource("DEVICE_INFORM");
$em->persist($report);

$battery = new \Iway\M2M\ApiBundle\Entity\ReportBattery();
$battery->setReport($report);
$battery->setReportId($report->getId());
$battery->setBatteryVoltage(10);
$battery->setExternalVoltage(1000);
$em->persist($battery);

$em->flush();

if i dont execute this 2 set Methods the query fails

$battery->setReport($report);
$battery->setReportId($report->getId());

if i only use setReport i get:

[Doctrine\ORM\ORMException]
Entity of type Iway\M2M\ApiBundle\Entity\ReportBattery is missing an assigned ID for field 'report_id'. The identifier generation strategy for this entity requires the ID field to be p
opulated before EntityManager#persist() is called. If you want automatically generated identifiers instead you need to adjust the metadata mapping accordingly.

if i only use: setReportId i get

[Doctrine\DBAL\Driver\OCI8\OCI8Exception]
ORA-01400: cannot insert NULL into ("IWAYDATA"."SRV_M2M_REPORT_BATTERY"."REPORTID")

im mapping something in the wrong way but i cant see what it is..... any help would be great!
Thanks

ok, i want to add a last thing the example http://docs.doctrine-project.org/en/latest/tutorials/composite-primary-keys.html#use-case-2-simple-derived-identity

cannot be done using YML (or a least, its not documented)

what i done is get an empty database a used the example just like it is in the article, then used the task provided to pass from one format to the other (using symfony is ./app/console doctrine:mapping:convert yml /path)
and get this 2 yml files:

Acme\DemoBundle\Entity\User:
type: entity
table: User
fields:
id:
type: integer
id: true
generator:
strategy: IDENTITY
lifecycleCallbacks: { }

Acme\DemoBundle\Entity\Address:
type: entity
table: Address
oneToOne:
user:
targetEntity: Acme\DemoBundle\Entity\User
cascade: { }
mappedBy: null
inversedBy: null
joinColumns:
user_id:
referencedColumnName: id
orphanRemoval: false
lifecycleCallbacks: { }

when i try to build my schema with this configuration i get:

[Doctrine\ORM\Mapping\MappingException]
No identifier/primary key specified for Entity 'Acme\DemoBundle\Entity\Address'. Every Entity must have an identifier/primary key.

is there a way to add id: true in a relation on yml or xml configuration? or its only valid using annotations?

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