/**
* @param Table $table
* @param Database $db
* @return Table
*/
protected function addCreateStatement(Table $table, Database $db)
{
$stmt = $this->conn->query(sprintf('SHOW CREATE TABLE %s.%s', $db->getName(), $table->getName()));
$create = $stmt->fetch(\PDO::FETCH_ASSOC);
if (!$create || !isset($create['Create Table'])) {
return null;
}
$table->setStatement($create['Create Table'])->parse($create['Create Table']);
$db->addTable($table);
return $table;
}
/**
* @param Database $db
* @param Table $tbl
* @return Table
*/
public function getTableFields(Database $db, Table $tbl)
{
$query = sprintf('SHOW COLUMNS IN `%s` FROM `%s`', $tbl->getName(), $db->getName());
$stmt = $this->conn->query($query);
while ($row = $stmt->fetch(\PDO::FETCH_ASSOC)) {
$field = new Field('', $row['Field']);
$field->setType($row['Type'])->setNullable(strtoupper($row['Null']) == 'YES')->setDefaultValue($row['Default']);
if ($row['Extra']) {
if ($row['Extra'] == 'auto_increment') {
$field->setAutoIncrement(true);
} else {
//things like on update?
$field->setExtraString($row['Extra']);
}
}
$tbl->addField($field, true);
}
return $tbl;
}
/**
* @param Database $base
* @param Database $target
* @return array
*/
public function dropRedundantTables(Database $base, Database $target)
{
$drop = [];
/** @var Table $table */
foreach ($base->getTables() as $name => $table) {
if (!$target->hasTable($name)) {
$drop[] = $table->getDropQuery();
$table->unlinkTable();
}
}
return $drop;
}
