/**
* returns the status for a triple inside the unit of work.
*
* @param \Conjecto\Nemrod\Resource $resource
* @param $property
* @param $value
*
* @return string
*/
private function tripleStatus($resource, $property, $value)
{
if (is_string($resource)) {
$resource = $this->retrieveResource($resource);
}
$snapshotValues = $this->initialSnapshots->all($resource, $property);
$resourceValues = $resource->all($resource, $property);
$valueInSnapShot = false;
foreach ($snapshotValues as $val) {
$snapValue = $val instanceof Literal ? $val->getValue() : $val['value'];
if ($value instanceof Literal || $snapValue === $value['value']) {
$valueInSnapShot = true;
}
}
$valueInResource = false;
foreach ($resourceValues as $val) {
if ($val['value'] === $value['value']) {
$valueInResource = true;
}
}
if ($valueInSnapShot) {
if ($valueInResource) {
return self::STATUS_TRIPLE_UNCHANGED;
} else {
return self::STATUS_TRIPLE_REMOVED;
}
} else {
if ($valueInResource) {
return self::STATUS_TRIPLE_ADDED;
} else {
return self::STATUS_TRIPLE_UNKNOWN;
}
}
}
