protected function preHash(MeshingBaseObject $object, array $values)
{
// Get previous hash to add into the current hashing process
$previousHash = $object->getHash($this->con);
$values[] = $previousHash . $this->getValueTerminator($previousHash);
return $values;
}
/**
* Clears cached hash providers
*
* This is only really useful for testing - we wouldn't normally want to mix hash
* providers on the one connection
*/
public function clearHashProviders()
{
self::$hashProviders = array();
}
/**
* Gets value for row table
*
* Swaps foreign creator_node_id values for their unique FQDN value. Note that the other
* part(s) to a primary or foreign key is set by the creator and is the same in all nodes,
* so may be hashed without causing difference problems between nodes.
*
* @todo Better node table detection required (should use known prefix)
* @todo Fix column name hardwiring
*
* @param MeshingBaseObject $object
* @param ColumnMap $columnMap
* @return mixed
*/
protected function getRowValue(MeshingBaseObject $object, ColumnMap $columnMap)
{
// Get value for this column
$columnName = $columnMap->getName();
$value = $object->getByName($columnName, BasePeer::TYPE_RAW_COLNAME);
// If the related table name ends with '_known_node' then we assume this is a
// FK to a creator node ID.
if ($columnMap->isForeignKey()) {
$match = '_known_node';
$isNodeTable = $match == substr($columnMap->getRelatedTableName(), -strlen($match));
if ($isNodeTable && $columnMap->getRelatedColumnName() == 'ID') {
$nodePeerName = $columnMap->getRelation()->getForeignTable()->getPeerClassname();
$node = call_user_func(array($nodePeerName, 'retrieveByPK'), $value, $this->con);
// If there is no related node, we really do have problems!
if (!$node) {
$primaryKey = $object->getPrimaryKey();
if (is_array($primaryKey)) {
$primaryKey = '{' . implode(',', $primaryKey) . '}';
}
$type = get_class($object);
throw new Exception("Row {$primaryKey} in table '{$type}' points to a non-existent node row");
}
$value = $node->getFqdn();
}
}
return $value;
}
/**
* Clears the static object variables used to cache a provider per connection
*/
protected function clearProviderCache()
{
$o = new MeshingBaseObject();
$o->clearHashProviders();
}
