protected function mergePHIDOrEdgeTransactions(PhabricatorApplicationTransaction $u, PhabricatorApplicationTransaction $v)
{
$result = $u->getNewValue();
foreach ($v->getNewValue() as $key => $value) {
if ($u->getTransactionType() == PhabricatorTransactions::TYPE_EDGE) {
if (empty($result[$key])) {
$result[$key] = $value;
} else {
// We're merging two lists of edge adds, sets, or removes. Merge
// them by merging individual PHIDs within them.
$merged = $result[$key];
foreach ($value as $dst => $v_spec) {
if (empty($merged[$dst])) {
$merged[$dst] = $v_spec;
} else {
// Two transactions are trying to perform the same operation on
// the same edge. Normalize the edge data and then merge it. This
// allows transactions to specify how data merges execute in a
// precise way.
$u_spec = $merged[$dst];
if (!is_array($u_spec)) {
$u_spec = array('dst' => $u_spec);
}
if (!is_array($v_spec)) {
$v_spec = array('dst' => $v_spec);
}
$ux_data = idx($u_spec, 'data', array());
$vx_data = idx($v_spec, 'data', array());
$merged_data = $this->mergeEdgeData($u->getMetadataValue('edge:type'), $ux_data, $vx_data);
$u_spec['data'] = $merged_data;
$merged[$dst] = $u_spec;
}
}
$result[$key] = $merged;
}
} else {
$result[$key] = array_merge($value, idx($result, $key, array()));
}
}
$u->setNewValue($result);
// When combining an "ignore" transaction with a normal transaction, make
// sure we don't propagate the "ignore" flag.
if (!$v->getIgnoreOnNoEffect()) {
$u->setIgnoreOnNoEffect(false);
}
return $u;
}
