importFromSource($source); } protected function importFromSource(ImportSource $source) { $connection = $source->getConnection(); $this->db = $db = $connection->getDbAdapter(); $keyColumn = $source->key_column; $rows = array(); $props = array(); $rowsProps = array(); foreach (ImportSourceHook::loadByName($source->source_name, $connection)->fetchData() as $row) { // TODO: Check for name collision if (! isset($row->$keyColumn)) { die('Depp'); } $object_name = $row->$keyColumn; $rowChecksums = array(); $keys = array_keys((array) $row); sort($keys); foreach ($keys as $key) { // TODO: Specify how to treat NULL values. Ignoring for now. if ($row->$key === null) { continue; } $checksum = sha1($key . '=' . json_encode((string) $row->$key), true); if (! array_key_exists($checksum, $props)) { $props[$checksum] = array( 'checksum' => $checksum, 'property_name' => $key, 'property_value' => $row->$key, 'format' => 'string' ); } $rowChecksums[] = $checksum; } $checksum = sha1($object_name . ';' . implode(';', $rowChecksums), true); if (array_key_exists($checksum, $rows)) { die('WTF, collision?'); } $rows[$checksum] = array( 'checksum' => $checksum, 'object_name' => $object_name ); $rowsProps[$checksum] = $rowChecksums; } $rowSums = array_keys($rows); $rowset = sha1(implode(';', $rowSums), true); $db->beginTransaction(); if (! $this->rowSetExists($rowset)) { $newRows = $this->newChecksums('imported_row', $rowSums); $newProperties = $this->newChecksums('imported_property', array_keys($props)); $db->insert('imported_rowset', array('checksum' => $rowset)); foreach ($newProperties as $checksum) { $db->insert('imported_property', $props[$checksum]); } foreach ($newRows as $checksum) { $db->insert('imported_row', $rows[$checksum]); foreach ($rowsProps[$checksum] as $propChecksum) { $db->insert('imported_row_property', array( 'row_checksum' => $checksum, 'property_checksum' => $propChecksum )); } } foreach (array_keys($rows) as $checksum) { $db->insert( 'imported_rowset_row', array( 'rowset_checksum' => $rowset, 'row_checksum' => $checksum ) ); } } $db->insert( 'import_run', array( 'source_id' => $source->id, 'rowset_checksum' => $rowset, 'start_time' => date('Y-m-d H:i:s'), 'succeeded' => 'y' ) ); $id = $db->lastInsertId(); $db->commit(); return $id; } protected function rowSetExists($checksum) { return count($this->newChecksums('imported_rowset', array($checksum))) === 0; } protected function newChecksums($table, $checksums) { $db = $this->db; $existing = $db->fetchCol( $db->select()->from($table, 'checksum')->where('checksum IN (?)', $checksums) ); return array_diff($checksums, $existing); } }