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<?php |
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/** |
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* webtrees: online genealogy |
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* Copyright (C) 2022 webtrees development team |
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* This program is free software: you can redistribute it and/or modify |
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* it under the terms of the GNU General Public License as published by |
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* the Free Software Foundation, either version 3 of the License, or |
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* (at your option) any later version. |
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU General Public License for more details. |
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* You should have received a copy of the GNU General Public License |
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* along with this program. If not, see <https://www.gnu.org/licenses/>. |
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*/ |
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declare(strict_types=1); |
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namespace Fisharebest\Webtrees\DB; |
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use DomainException; |
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use Fisharebest\Webtrees\DB\Drivers\DriverInterface; |
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use Fisharebest\Webtrees\DB\Drivers\MySQLDriver; |
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use Fisharebest\Webtrees\DB\Drivers\PostgreSQLDriver; |
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use Fisharebest\Webtrees\DB\Drivers\SQLiteDriver; |
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use Fisharebest\Webtrees\DB\Drivers\SQLServerDriver; |
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use Fisharebest\Webtrees\DB\Exceptions\SchemaException; |
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use Fisharebest\Webtrees\DB\Schema\Schema; |
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use Fisharebest\Webtrees\DB\Schema\Table; |
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use PDO; |
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use function array_diff_key; |
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use function array_intersect_key; |
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use function array_keys; |
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use function array_map; |
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use function implode; |
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use function in_array; |
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/** |
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* Extend the PDO database connection to support prefixes and introspection. |
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*/ |
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class Connection |
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{ |
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private DriverInterface $driver; |
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/** |
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* @param PDO $pdo |
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* @param string $prefix |
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*/ |
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public function __construct(private readonly PDO $pdo, private readonly string $prefix = '') |
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{ |
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$driver_name = $this->pdo->getAttribute(PDO::ATTR_DRIVER_NAME); |
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$this->driver = match ($driver_name) { |
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'mysql' => new MySQLDriver($pdo, $prefix), |
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'postgres' => new PostgreSQLDriver($pdo, $prefix), |
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'sqlite' => new SQLiteDriver($pdo, $prefix), |
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'sqlsrv' => new SQLServerDriver($pdo, $prefix), |
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default => throw new DomainException('No driver available for ' . $driver_name), |
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}; |
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} |
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/** |
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* @param Schema $target |
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* |
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* @return array<string> |
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*/ |
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public function diffSchema(Schema $target): array |
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{ |
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$source = $this->driver->introspectSchema(); |
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// Collect SQL statements into three groups |
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$drop_foreign_key_sql = []; |
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$create_and_alter_table_sql = []; |
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$create_foreign_key_sql = []; |
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foreach ($target->getTables() as $target_table) { |
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$src_table = $all_tables[$this->prefix . $target_table->getName()] ?? null; |
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if (!in_array($src_table, $dst_tables, true)) { |
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// Table does not currently exist |
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$create_and_alter_table_sql = [...$create_and_alter_table_sql, ...$this->driver->generateTableSql($target_table)]; |
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} else { |
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// Table exists - check columns |
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$src_columns = $this->driver->listColumns($target_table->getName()); |
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$src_columns_sql = array_map($this->driver->introspectColumn(...), $src_columns); |
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$dst_columns_sql = array_map($this->driver->columnSql(...), $target_table->getColumns()); |
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$drop_columns = array_map($this->driver->dropColumnSQL(...), array_keys(array_diff_key($src_columns, $target_table->getColumns()))); |
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$add_columns = array_map($this->driver->addColumnSQL(...), array_diff_key($target_table->getColumns(), $src_columns)); |
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$alter_columns = array_map($this->driver->alterColumnSQL(...), array_intersect_key($target_table->getColumns(), $src_columns)); |
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$changes = [...$drop_columns, ...$alter_columns, ...$add_columns]; |
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if ($changes !== []) { |
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$alter_table = 'ALTER TABLE ' . $this->driver->quoteIdentifier($this->prefix . $target_table->getName()) . implode(', ', $changes); |
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$create_and_alter_table_sql = [...$create_and_alter_table_sql, $alter_table]; |
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} |
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} |
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} |
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// Results need to be in this order |
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return [...$drop_foreign_key_sql, ...$create_and_alter_table_sql, ...$create_foreign_key_sql]; |
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} |
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/** |
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* @param string $table_name |
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* |
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* @return bool |
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*/ |
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public function tableExists(string $table_name): bool |
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{ |
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return in_array($this->prefix . $table_name, $this->driver->listTables(), true); |
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} |
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/** |
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* @param string $table_name |
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* @param string $column_name |
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* |
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* @return bool |
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*/ |
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public function columnExists(string $table_name, string $column_name): bool |
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{ |
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return in_array($column_name, $this->driver->listColumns($this->prefix . $table_name), true); |
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} |
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} |
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fisharebest /
webtrees
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