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255 lines
7.6 KiB
255 lines
7.6 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\base\NotSupportedException; |
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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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/** |
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* Schema is the class for retrieving metadata from a CUBRID database (version 9.1.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 = array( |
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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_STRING, |
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// 'bit varying' => self::TYPE_STRING, |
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// Collection data types (TODO are considered strings for now, naybe support conversion?) |
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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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* 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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* Quotes a string value for use in a query. |
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* Note that if the parameter is not a string, it will be returned without change. |
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* @param string $str string to be quoted |
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* @return string the properly quoted string |
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* @see http://www.php.net/manual/en/function.PDO-quote.php |
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*/ |
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public function quoteValue($str) |
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{ |
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if (!is_string($str)) { |
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return $str; |
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} |
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$this->db->open(); |
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// workaround for broken PDO::quote() implementation in CUBRID 9.1.0 http://jira.cubrid.org/browse/APIS-658 |
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if (version_compare($this->db->pdo->getAttribute(\PDO::ATTR_CLIENT_VERSION), '9.1.0', '<=')) { |
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return "'" . addcslashes(str_replace("'", "''", $str), "\000\n\r\\\032") . "'"; |
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} else { |
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return $this->db->pdo->quote($str); |
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} |
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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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$this->db->open(); |
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$tableInfo = $this->db->pdo->cubrid_schema(\PDO::CUBRID_SCH_TABLE, $name); |
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if (isset($tableInfo[0]['NAME'])) { |
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$table = new TableSchema(); |
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$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] = $column; |
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if ($column->isPrimaryKey) { |
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$table->primaryKey[] = $column->name; |
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if ($column->autoIncrement) { |
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$table->sequenceName = ''; |
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} |
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} |
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} |
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$foreignKeys = $this->db->pdo->cubrid_schema(\PDO::CUBRID_SCH_IMPORTED_KEYS, $table->name); |
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foreach($foreignKeys as $key) { |
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$table->foreignKeys[] = array( |
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$key['PKTABLE_NAME'], |
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$key['FKCOLUMN_NAME'] => $key['PKCOLUMN_NAME'] |
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// TODO support composite foreign keys |
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); |
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} |
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return $table; |
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} else { |
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return null; |
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} |
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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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$column = new ColumnSchema(); |
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$column->name = $info['Field']; |
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$column->allowNull = $info['Null'] === 'YES'; |
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$column->isPrimaryKey = strpos($info['Key'], 'PRI') !== false; |
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$column->autoIncrement = stripos($info['Extra'], 'auto_increment') !== false; |
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$column->dbType = strtolower($info['Type']); |
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$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 = $matches[1]; |
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if (isset($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 = explode(',', $matches[2]); |
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foreach ($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)$values[1]; |
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} |
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} |
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} |
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} |
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$column->phpType = $this->getColumnPhpType($column); |
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if ($column->type === 'timestamp' && $info['Default'] === 'CURRENT_TIMESTAMP' || |
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$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' && $info['Default'] === 'SYS_TIME') { |
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$column->defaultValue = new Expression($info['Default']); |
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} else { |
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$column->defaultValue = $column->typecast($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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$this->db->open(); |
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$tables = $this->db->pdo->cubrid_schema(\PDO::CUBRID_SCH_TABLE); |
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$tableNames = array(); |
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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 give 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 $typeMap = array( |
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'boolean' => \PDO::PARAM_INT, // CUBRID PDO does not support PARAM_BOOL |
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'integer' => \PDO::PARAM_INT, |
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'string' => \PDO::PARAM_STR, |
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'resource' => \PDO::PARAM_LOB, |
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'NULL' => \PDO::PARAM_NULL, |
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); |
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$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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