public function buildGraph()
{
if (!empty($this->connection)) {
$recoder = new Recorder($this->connection);
$this->appliedMigrations = $recoder->getApplied();
}
$migrations = $this->getMigrations();
$this->graph = new Graph();
// first add all the migrations into the graph
foreach ($migrations as $name => $migration) {
$this->graph->addNode($name, $migration);
}
// the for each migration set its dependencies
/** @var $migration Migration */
foreach ($migrations as $name => $migration) {
foreach ($migration->getDependency() as $parent) {
$this->graph->addDependency($name, $parent, $migration);
}
}
}
