public function build()
{
if ($this->objectID == NULL) {
$this->objectID = UOID::createUOID();
}
if ($this->datetime == NULL) {
$this->datetime = XSDDateTime::getXSDDateTime();
}
if (!UOID::isValid($this->objectID)) {
throw new IllegalModelStateException('Invalid objectID');
}
if (!UOID::isValid($this->targetID)) {
throw new IllegalModelStateException('Invalid targetID');
}
if (!GID::isValid($this->author)) {
throw new IllegalModelStateException('Invalid author');
}
if ($this->body == '' || $this->body == NULL) {
throw new IllegalModelStateException('Invalid body');
}
if (!XSDDateTime::validateXSDDateTime($this->datetime)) {
throw new IllegalModelStateException('Invalid datetime');
}
$conversationMessage = new ConversationMessageObject($this);
if ($conversationMessage->getSignature() == NULL) {
$conversationMessage->signObject();
}
if (!$conversationMessage->verifyObjectSignature()) {
throw new IllegalModelStateException('Invalid signature');
}
return $conversationMessage;
}
