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<?php |
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/** |
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* Created by Gorlum 12.06.2017 15:29 |
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*/ |
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namespace DBAL; |
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class Schema { |
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/** |
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* @var db_mysql $db |
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*/ |
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protected $db; |
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/** |
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* List of all table names |
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* |
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* @var string[] $tablesAll |
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*/ |
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protected $tablesAll = null; |
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/** |
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* @var string[] $tablesSn |
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*/ |
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protected $tablesSn = null; |
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/** |
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* @var TableSchema[] $tableSchemas |
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*/ |
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protected $tableSchemas = []; |
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public function __construct(db_mysql $db) { |
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$this->db = $db; |
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} |
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public function getDb() { |
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return $this->db; |
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} |
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public function clear() { |
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$this->tablesAll = null; |
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$this->tablesSn = null; |
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$this->tableSchemas = []; |
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} |
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protected function loadTableNamesFromDb() { |
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$this->clear(); |
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$this->tablesAll = array(); |
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$this->tablesSn = array(); |
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$query = $this->db->mysql_get_table_list(); |
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$prefix_length = strlen($this->db->db_prefix); |
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while ($row = $this->db->db_fetch($query)) { |
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foreach ($row as $table_name) { |
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$this->tablesAll[$table_name] = $table_name; |
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if (strpos($table_name, $this->db->db_prefix) === 0) { |
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$table_name_sn = substr($table_name, $prefix_length); |
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$this->tablesSn[$table_name_sn] = $table_name_sn; |
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} |
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} |
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} |
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} |
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/** |
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* Get names of all tables in this DB |
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* |
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* @return string[] |
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*/ |
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public function getAllTables() { |
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if (!isset($this->tablesAll)) { |
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$this->loadTableNamesFromDb(); |
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} |
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return $this->tablesAll; |
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} |
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/** |
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* Get un-prefixed table names potentially used by game |
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* |
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* @return string[] |
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*/ |
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public function getSnTables() { |
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if (!isset($this->tablesSn)) { |
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$this->loadTableNamesFromDb(); |
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} |
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return $this->tablesSn; |
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} |
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/** |
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* Checks if SN table exists |
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* |
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* @param $tableName |
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* |
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* @return bool |
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*/ |
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public function isSnTableExists($tableName) { |
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return isset($this->getSnTables()[$tableName]); |
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} |
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/** |
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* @param string $tableName |
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* |
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* @return TableSchema |
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*/ |
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public function getTableSchema($tableName) { |
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if (empty($this->tableSchemas[$tableName])) { |
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$this->tableSchemas[$tableName] = new TableSchema($tableName, $this); |
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} |
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return $this->tableSchemas[$tableName]; |
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} |
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/** |
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* @param $table |
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* @param $index |
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* |
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* @return bool |
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*/ |
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public function isIndexExists($table, $index) { |
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return $this->isSnTableExists($table) && $this->getTableSchema($table)->isIndexExists($index); |
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} |
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public function isFieldExists($table, $field) { |
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return $this->isSnTableExists($table) && $this->getTableSchema($table)->isFieldExists($field); |
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} |
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public function isConstrainExists($table, $constrain) { |
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return $this->isSnTableExists($table) && $this->getTableSchema($table)->isConstrainExists($constrain); |
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} |
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} |
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supernova-ws /
SuperNova
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