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302 lines
10 KiB
302 lines
10 KiB
<?php |
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/** |
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* @link http://www.yiiframework.com/ |
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* @copyright Copyright (c) 2008 Yii Software LLC |
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* @license http://www.yiiframework.com/license/ |
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*/ |
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namespace yii\db\cubrid; |
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use yii\db\Expression; |
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use yii\db\TableSchema; |
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use yii\db\ColumnSchema; |
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use yii\db\Transaction; |
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/** |
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* Schema is the class for retrieving metadata from a CUBRID database (version 9.3.x and higher). |
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* |
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* @author Carsten Brandt <mail@cebe.cc> |
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* @since 2.0 |
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*/ |
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class Schema extends \yii\db\Schema |
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{ |
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/** |
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* @var array mapping from physical column types (keys) to abstract column types (values) |
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* Please refer to [CUBRID manual](http://www.cubrid.org/manual/91/en/sql/datatype.html) for |
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* details on data types. |
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*/ |
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public $typeMap = [ |
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// Numeric data types |
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'short' => self::TYPE_SMALLINT, |
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'smallint' => self::TYPE_SMALLINT, |
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'int' => self::TYPE_INTEGER, |
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'integer' => self::TYPE_INTEGER, |
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'bigint' => self::TYPE_BIGINT, |
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'numeric' => self::TYPE_DECIMAL, |
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'decimal' => self::TYPE_DECIMAL, |
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'float' => self::TYPE_FLOAT, |
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'real' => self::TYPE_FLOAT, |
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'double' => self::TYPE_FLOAT, |
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'double precision' => self::TYPE_FLOAT, |
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'monetary' => self::TYPE_MONEY, |
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// Date/Time data types |
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'date' => self::TYPE_DATE, |
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'time' => self::TYPE_TIME, |
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'timestamp' => self::TYPE_TIMESTAMP, |
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'datetime' => self::TYPE_DATETIME, |
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// String data types |
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'char' => self::TYPE_STRING, |
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'varchar' => self::TYPE_STRING, |
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'char varying' => self::TYPE_STRING, |
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'nchar' => self::TYPE_STRING, |
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'nchar varying' => self::TYPE_STRING, |
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'string' => self::TYPE_STRING, |
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// BLOB/CLOB data types |
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'blob' => self::TYPE_BINARY, |
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'clob' => self::TYPE_BINARY, |
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// Bit string data types |
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'bit' => self::TYPE_INTEGER, |
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'bit varying' => self::TYPE_INTEGER, |
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// Collection data types (considered strings for now) |
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'set' => self::TYPE_STRING, |
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'multiset' => self::TYPE_STRING, |
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'list' => self::TYPE_STRING, |
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'sequence' => self::TYPE_STRING, |
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'enum' => self::TYPE_STRING, |
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]; |
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/** |
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* @var array map of DB errors and corresponding exceptions |
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* If left part is found in DB error message exception class from the right part is used. |
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*/ |
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public $exceptionMap = [ |
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'Operation would have caused one or more unique constraint violations' => 'yii\db\IntegrityException', |
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]; |
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/** |
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* @inheritdoc |
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*/ |
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public function releaseSavepoint($name) |
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{ |
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// does nothing as cubrid does not support this |
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} |
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/** |
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* Quotes a table name for use in a query. |
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* A simple table name has no schema prefix. |
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* @param string $name table name |
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* @return string the properly quoted table name |
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*/ |
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public function quoteSimpleTableName($name) |
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{ |
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return strpos($name, '"') !== false ? $name : '"' . $name . '"'; |
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} |
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/** |
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* Quotes a column name for use in a query. |
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* A simple column name has no prefix. |
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* @param string $name column name |
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* @return string the properly quoted column name |
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*/ |
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public function quoteSimpleColumnName($name) |
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{ |
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return strpos($name, '"') !== false || $name === '*' ? $name : '"' . $name . '"'; |
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} |
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/** |
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* Creates a query builder for the CUBRID database. |
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* @return QueryBuilder query builder instance |
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*/ |
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public function createQueryBuilder() |
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{ |
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return new QueryBuilder($this->db); |
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} |
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/** |
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* Loads the metadata for the specified table. |
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* @param string $name table name |
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* @return TableSchema driver dependent table metadata. Null if the table does not exist. |
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*/ |
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protected function loadTableSchema($name) |
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{ |
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$pdo = $this->db->getSlavePdo(); |
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$tableInfo = $pdo->cubrid_schema(\PDO::CUBRID_SCH_TABLE, $name); |
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if (!isset($tableInfo[0]['NAME'])) { |
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return null; |
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} |
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$table = new TableSchema(); |
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$table->fullName = $table->name = $tableInfo[0]['NAME']; |
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$sql = 'SHOW FULL COLUMNS FROM ' . $this->quoteSimpleTableName($table->name); |
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$columns = $this->db->createCommand($sql)->queryAll(); |
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foreach ($columns as $info) { |
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$column = $this->loadColumnSchema($info); |
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$table->columns[$column->name] = $column; |
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} |
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$primaryKeys = $pdo->cubrid_schema(\PDO::CUBRID_SCH_PRIMARY_KEY, $table->name); |
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foreach ($primaryKeys as $key) { |
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$column = $table->columns[$key['ATTR_NAME']]; |
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$column->isPrimaryKey = true; |
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$table->primaryKey[] = $column->name; |
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if ($column->autoIncrement) { |
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$table->sequenceName = ''; |
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} |
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} |
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$foreignKeys = $pdo->cubrid_schema(\PDO::CUBRID_SCH_IMPORTED_KEYS, $table->name); |
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foreach ($foreignKeys as $key) { |
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if (isset($table->foreignKeys[$key['FK_NAME']])) { |
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$table->foreignKeys[$key['FK_NAME']][$key['FKCOLUMN_NAME']] = $key['PKCOLUMN_NAME']; |
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} else { |
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$table->foreignKeys[$key['FK_NAME']] = [ |
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$key['PKTABLE_NAME'], |
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$key['FKCOLUMN_NAME'] => $key['PKCOLUMN_NAME'] |
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]; |
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} |
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} |
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$table->foreignKeys = array_values($table->foreignKeys); |
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return $table; |
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} |
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/** |
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* Loads the column information into a [[ColumnSchema]] object. |
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* @param array $info column information |
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* @return ColumnSchema the column schema object |
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*/ |
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protected function loadColumnSchema($info) |
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{ |
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$column = $this->createColumnSchema(); |
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$column->name = $info['Field']; |
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$column->allowNull = $info['Null'] === 'YES'; |
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$column->isPrimaryKey = false; // primary key will be set by loadTableSchema() later |
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$column->autoIncrement = stripos($info['Extra'], 'auto_increment') !== false; |
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$column->dbType = $info['Type']; |
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$column->unsigned = strpos($column->dbType, 'unsigned') !== false; |
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$column->type = self::TYPE_STRING; |
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if (preg_match('/^([\w ]+)(?:\(([^\)]+)\))?$/', $column->dbType, $matches)) { |
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$type = strtolower($matches[1]); |
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$column->dbType = $type . (isset($matches[2]) ? "({$matches[2]})" : ''); |
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if (isset($this->typeMap[$type])) { |
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$column->type = $this->typeMap[$type]; |
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} |
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if (!empty($matches[2])) { |
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if ($type === 'enum') { |
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$values = preg_split('/\s*,\s*/', $matches[2]); |
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foreach ($values as $i => $value) { |
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$values[$i] = trim($value, "'"); |
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} |
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$column->enumValues = $values; |
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} else { |
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$values = explode(',', $matches[2]); |
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$column->size = $column->precision = (int) $values[0]; |
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if (isset($values[1])) { |
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$column->scale = (int) $values[1]; |
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} |
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if ($column->size === 1 && $type === 'bit') { |
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$column->type = 'boolean'; |
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} elseif ($type === 'bit') { |
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if ($column->size > 32) { |
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$column->type = 'bigint'; |
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} elseif ($column->size === 32) { |
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$column->type = 'integer'; |
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} |
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} |
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} |
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} |
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} |
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$column->phpType = $this->getColumnPhpType($column); |
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if ($column->isPrimaryKey) { |
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return $column; |
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} |
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if ($column->type === 'timestamp' && $info['Default'] === 'SYS_TIMESTAMP' || |
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$column->type === 'datetime' && $info['Default'] === 'SYS_DATETIME' || |
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$column->type === 'date' && $info['Default'] === 'SYS_DATE' || |
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$column->type === 'time' && $info['Default'] === 'SYS_TIME' |
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) { |
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$column->defaultValue = new Expression($info['Default']); |
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} elseif (isset($type) && $type === 'bit') { |
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$column->defaultValue = hexdec(trim($info['Default'],'X\'')); |
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} else { |
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$column->defaultValue = $column->phpTypecast($info['Default']); |
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} |
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return $column; |
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} |
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/** |
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* Returns all table names in the database. |
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* @param string $schema the schema of the tables. Defaults to empty string, meaning the current or default schema. |
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* @return array all table names in the database. The names have NO schema name prefix. |
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*/ |
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protected function findTableNames($schema = '') |
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{ |
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$pdo = $this->db->getSlavePdo(); |
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$tables =$pdo->cubrid_schema(\PDO::CUBRID_SCH_TABLE); |
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$tableNames = []; |
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foreach ($tables as $table) { |
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// do not list system tables |
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if ($table['TYPE'] != 0) { |
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$tableNames[] = $table['NAME']; |
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} |
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} |
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return $tableNames; |
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} |
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/** |
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* Determines the PDO type for the given PHP data value. |
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* @param mixed $data the data whose PDO type is to be determined |
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* @return integer the PDO type |
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* @see http://www.php.net/manual/en/pdo.constants.php |
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*/ |
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public function getPdoType($data) |
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{ |
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static $typeMap = [ |
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// php type => PDO type |
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'boolean' => \PDO::PARAM_INT, // PARAM_BOOL is not supported by CUBRID PDO |
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'integer' => \PDO::PARAM_INT, |
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'string' => \PDO::PARAM_STR, |
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'resource' => \PDO::PARAM_LOB, |
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'NULL' => \PDO::PARAM_NULL, |
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]; |
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$type = gettype($data); |
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return isset($typeMap[$type]) ? $typeMap[$type] : \PDO::PARAM_STR; |
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} |
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/** |
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* @inheritdoc |
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* @see http://www.cubrid.org/manual/91/en/sql/transaction.html#database-concurrency |
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*/ |
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public function setTransactionIsolationLevel($level) |
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{ |
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// translate SQL92 levels to CUBRID levels: |
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switch ($level) { |
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case Transaction::SERIALIZABLE: |
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$level = '6'; // SERIALIZABLE |
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break; |
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case Transaction::REPEATABLE_READ: |
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$level = '5'; // REPEATABLE READ CLASS with REPEATABLE READ INSTANCES |
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break; |
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case Transaction::READ_COMMITTED: |
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$level = '4'; // REPEATABLE READ CLASS with READ COMMITTED INSTANCES |
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break; |
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case Transaction::READ_UNCOMMITTED: |
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$level = '3'; // REPEATABLE READ CLASS with READ UNCOMMITTED INSTANCES |
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break; |
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} |
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parent::setTransactionIsolationLevel($level); |
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} |
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}
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