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495 lines
16 KiB
495 lines
16 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\oci; |
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use yii\base\InvalidCallException; |
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use yii\db\Connection; |
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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 an Oracle database |
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* |
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* @property string $lastInsertID The row ID of the last row inserted, or the last value retrieved from the |
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* sequence object. This property is read-only. |
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* |
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* @author Qiang Xue <qiang.xue@gmail.com> |
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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 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 $exceptionMap = [ |
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'ORA-00001: unique constraint' => 'yii\db\IntegrityException', |
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]; |
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/** |
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* @inheritdoc |
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*/ |
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public function init() |
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{ |
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parent::init(); |
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if ($this->defaultSchema === null) { |
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$this->defaultSchema = strtoupper($this->db->username); |
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} |
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} |
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/** |
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* @inheritdoc |
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*/ |
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public function releaseSavepoint($name) |
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{ |
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// does nothing as Oracle does not support this |
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} |
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/** |
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* @inheritdoc |
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*/ |
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public function quoteSimpleTableName($name) |
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{ |
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return strpos($name, '"') !== false ? $name : '"' . $name . '"'; |
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} |
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/** |
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* @inheritdoc |
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*/ |
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public function createQueryBuilder() |
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{ |
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return new QueryBuilder($this->db); |
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} |
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/** |
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* @inheritdoc |
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*/ |
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public function createColumnSchemaBuilder($type, $length = null) |
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{ |
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return new ColumnSchemaBuilder($type, $length); |
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} |
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/** |
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* @inheritdoc |
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*/ |
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public function loadTableSchema($name) |
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{ |
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$table = new TableSchema(); |
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$this->resolveTableNames($table, $name); |
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if ($this->findColumns($table)) { |
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$this->findConstraints($table); |
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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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* Resolves the table name and schema name (if any). |
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* |
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* @param TableSchema $table the table metadata object |
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* @param string $name the table name |
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*/ |
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protected function resolveTableNames($table, $name) |
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{ |
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$parts = explode('.', str_replace('"', '', $name)); |
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if (isset($parts[1])) { |
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$table->schemaName = $parts[0]; |
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$table->name = $parts[1]; |
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} else { |
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$table->schemaName = $this->defaultSchema; |
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$table->name = $name; |
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} |
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$table->fullName = $table->schemaName !== $this->defaultSchema ? $table->schemaName . '.' . $table->name : $table->name; |
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} |
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/** |
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* Collects the table column metadata. |
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* @param TableSchema $table the table schema |
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* @return boolean whether the table exists |
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*/ |
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protected function findColumns($table) |
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{ |
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$sql = <<<SQL |
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SELECT a.column_name, a.data_type, a.data_precision, a.data_scale, a.data_length, |
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a.nullable, a.data_default, |
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( SELECT D.constraint_type |
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FROM ALL_CONS_COLUMNS C |
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inner join ALL_constraints D on D.OWNER = C.OWNER and D.constraint_name = C.constraint_name |
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WHERE C.OWNER = B.OWNER |
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and C.table_name = B.object_name |
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and C.column_name = A.column_name |
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and D.constraint_type = 'P') as Key, |
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com.comments as column_comment |
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FROM ALL_TAB_COLUMNS A |
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inner join ALL_OBJECTS B ON b.owner = a.owner and ltrim(B.OBJECT_NAME) = ltrim(A.TABLE_NAME) |
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LEFT JOIN all_col_comments com ON (A.owner = com.owner AND A.table_name = com.table_name AND A.column_name = com.column_name) |
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WHERE |
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a.owner = :schemaName |
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and b.object_type IN ('TABLE', 'VIEW', 'MATERIALIZED VIEW') |
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and b.object_name = :tableName |
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ORDER by a.column_id |
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SQL; |
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try { |
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$columns = $this->db->createCommand($sql, [ |
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':tableName' => $table->name, |
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':schemaName' => $table->schemaName, |
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])->queryAll(); |
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} catch (\Exception $e) { |
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return false; |
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} |
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if (empty($columns)) { |
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return false; |
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} |
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foreach ($columns as $column) { |
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if ($this->db->slavePdo->getAttribute(\PDO::ATTR_CASE) === \PDO::CASE_LOWER) { |
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$column = array_change_key_case($column, CASE_UPPER); |
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} |
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$c = $this->createColumn($column); |
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$table->columns[$c->name] = $c; |
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if ($c->isPrimaryKey) { |
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$table->primaryKey[] = $c->name; |
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$table->sequenceName = $this->getTableSequenceName($table->name); |
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} |
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} |
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return true; |
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} |
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/** |
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* Sequence name of table |
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* |
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* @param string $tableName |
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* @internal param \yii\db\TableSchema $table->name the table schema |
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* @return string|null whether the sequence exists |
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*/ |
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protected function getTableSequenceName($tableName) |
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{ |
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$seq_name_sql = <<<SQL |
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SELECT ud.referenced_name as sequence_name |
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FROM user_dependencies ud |
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JOIN user_triggers ut on (ut.trigger_name = ud.name) |
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WHERE ut.table_name = :tableName |
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AND ud.type='TRIGGER' |
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AND ud.referenced_type='SEQUENCE' |
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SQL; |
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$sequenceName = $this->db->createCommand($seq_name_sql, [':tableName' => $tableName])->queryScalar(); |
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return $sequenceName === false ? null : $sequenceName; |
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} |
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/** |
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* @Overrides method in class 'Schema' |
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* @see http://www.php.net/manual/en/function.PDO-lastInsertId.php -> Oracle does not support this |
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* |
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* Returns the ID of the last inserted row or sequence value. |
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* @param string $sequenceName name of the sequence object (required by some DBMS) |
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* @return string the row ID of the last row inserted, or the last value retrieved from the sequence object |
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* @throws InvalidCallException if the DB connection is not active |
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*/ |
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public function getLastInsertID($sequenceName = '') |
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{ |
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if ($this->db->isActive) { |
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// get the last insert id from the master connection |
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$sequenceName = $this->quoteSimpleTableName($sequenceName); |
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return $this->db->useMaster(function (Connection $db) use ($sequenceName) { |
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return $db->createCommand("SELECT {$sequenceName}.CURRVAL FROM DUAL")->queryScalar(); |
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}); |
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} else { |
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throw new InvalidCallException('DB Connection is not active.'); |
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} |
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} |
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/** |
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* Creates ColumnSchema instance |
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* |
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* @param array $column |
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* @return ColumnSchema |
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*/ |
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protected function createColumn($column) |
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{ |
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$c = $this->createColumnSchema(); |
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$c->name = $column['COLUMN_NAME']; |
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$c->allowNull = $column['NULLABLE'] === 'Y'; |
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$c->isPrimaryKey = strpos($column['KEY'], 'P') !== false; |
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$c->comment = $column['COLUMN_COMMENT'] === null ? '' : $column['COLUMN_COMMENT']; |
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$this->extractColumnType($c, $column['DATA_TYPE'], $column['DATA_PRECISION'], $column['DATA_SCALE'], $column['DATA_LENGTH']); |
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$this->extractColumnSize($c, $column['DATA_TYPE'], $column['DATA_PRECISION'], $column['DATA_SCALE'], $column['DATA_LENGTH']); |
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$c->phpType = $this->getColumnPhpType($c); |
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if (!$c->isPrimaryKey) { |
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if (stripos($column['DATA_DEFAULT'], 'timestamp') !== false) { |
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$c->defaultValue = null; |
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} else { |
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$defaultValue = $column['DATA_DEFAULT']; |
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if ($c->type === 'timestamp' && $defaultValue === 'CURRENT_TIMESTAMP') { |
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$c->defaultValue = new Expression('CURRENT_TIMESTAMP'); |
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} else { |
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if ($defaultValue !== null) { |
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if (($len = strlen($defaultValue)) > 2 && $defaultValue[0] === "'" |
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&& $defaultValue[$len - 1] === "'" |
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) { |
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$defaultValue = substr($column['DATA_DEFAULT'], 1, -1); |
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} else { |
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$defaultValue = trim($defaultValue); |
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} |
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} |
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$c->defaultValue = $c->phpTypecast($defaultValue); |
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} |
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} |
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} |
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return $c; |
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} |
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/** |
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* Finds constraints and fills them into TableSchema object passed |
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* @param TableSchema $table |
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*/ |
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protected function findConstraints($table) |
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{ |
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$sql = <<<SQL |
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SELECT D.CONSTRAINT_NAME, D.CONSTRAINT_TYPE, C.COLUMN_NAME, C.POSITION, D.R_CONSTRAINT_NAME, |
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E.TABLE_NAME AS TABLE_REF, F.COLUMN_NAME AS COLUMN_REF, |
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C.TABLE_NAME |
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FROM ALL_CONS_COLUMNS C |
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INNER JOIN ALL_CONSTRAINTS D ON D.OWNER = C.OWNER AND D.CONSTRAINT_NAME = C.CONSTRAINT_NAME |
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LEFT JOIN ALL_CONSTRAINTS E ON E.OWNER = D.R_OWNER AND E.CONSTRAINT_NAME = D.R_CONSTRAINT_NAME |
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LEFT JOIN ALL_CONS_COLUMNS F ON F.OWNER = E.OWNER AND F.CONSTRAINT_NAME = E.CONSTRAINT_NAME AND F.POSITION = C.POSITION |
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WHERE C.OWNER = :schemaName |
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AND C.TABLE_NAME = :tableName |
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ORDER BY D.CONSTRAINT_NAME, C.POSITION |
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SQL; |
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$command = $this->db->createCommand($sql, [ |
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':tableName' => $table->name, |
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':schemaName' => $table->schemaName, |
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]); |
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$constraints = []; |
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foreach ($command->queryAll() as $row) { |
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if ($this->db->slavePdo->getAttribute(\PDO::ATTR_CASE) === \PDO::CASE_LOWER) { |
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$row = array_change_key_case($row, CASE_UPPER); |
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} |
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if ($row['CONSTRAINT_TYPE'] !== 'R') { |
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// this condition is not checked in SQL WHERE because of an Oracle Bug: |
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// see https://github.com/yiisoft/yii2/pull/8844 |
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continue; |
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} |
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$name = $row['CONSTRAINT_NAME']; |
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if (!isset($constraints[$name])) { |
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$constraints[$name] = [ |
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'tableName' => $row['TABLE_REF'], |
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'columns' => [], |
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]; |
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} |
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$constraints[$name]['columns'][$row['COLUMN_NAME']] = $row['COLUMN_REF']; |
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} |
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foreach ($constraints as $constraint) { |
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$table->foreignKeys[] = array_merge([$constraint['tableName']], $constraint['columns']); |
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} |
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} |
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/** |
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* @inheritdoc |
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*/ |
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protected function findSchemaNames() |
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{ |
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$sql = <<<SQL |
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SELECT username |
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FROM dba_users u |
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WHERE EXISTS ( |
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SELECT 1 |
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FROM dba_objects o |
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WHERE o.owner = u.username ) |
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AND default_tablespace not in ('SYSTEM','SYSAUX') |
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SQL; |
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return $this->db->createCommand($sql)->queryColumn(); |
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} |
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/** |
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* @inheritdoc |
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*/ |
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protected function findTableNames($schema = '') |
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{ |
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if ($schema === '') { |
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$sql = <<<SQL |
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SELECT table_name FROM user_tables |
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UNION ALL |
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SELECT view_name AS table_name FROM user_views |
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UNION ALL |
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SELECT mview_name AS table_name FROM user_mviews |
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ORDER BY table_name |
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SQL; |
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$command = $this->db->createCommand($sql); |
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} else { |
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$sql = <<<SQL |
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SELECT object_name AS table_name |
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FROM all_objects |
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WHERE object_type IN ('TABLE', 'VIEW', 'MATERIALIZED VIEW') AND owner=:schema |
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ORDER BY object_name |
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SQL; |
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$command = $this->db->createCommand($sql, [':schema' => $schema]); |
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} |
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$rows = $command->queryAll(); |
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$names = []; |
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foreach ($rows as $row) { |
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if ($this->db->slavePdo->getAttribute(\PDO::ATTR_CASE) === \PDO::CASE_LOWER) { |
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$row = array_change_key_case($row, CASE_UPPER); |
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} |
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$names[] = $row['TABLE_NAME']; |
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} |
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return $names; |
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} |
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/** |
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* Returns all unique indexes for the given table. |
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* Each array element is of the following structure: |
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* |
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* ```php |
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* [ |
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* 'IndexName1' => ['col1' [, ...]], |
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* 'IndexName2' => ['col2' [, ...]], |
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* ] |
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* ``` |
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* |
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* @param TableSchema $table the table metadata |
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* @return array all unique indexes for the given table. |
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* @since 2.0.4 |
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*/ |
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public function findUniqueIndexes($table) |
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{ |
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$query = <<<SQL |
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SELECT dic.INDEX_NAME, dic.COLUMN_NAME |
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FROM ALL_INDEXES di |
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INNER JOIN ALL_IND_COLUMNS dic ON di.TABLE_NAME = dic.TABLE_NAME AND di.INDEX_NAME = dic.INDEX_NAME |
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WHERE di.UNIQUENESS = 'UNIQUE' |
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AND dic.TABLE_OWNER = :schemaName |
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AND dic.TABLE_NAME = :tableName |
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ORDER BY dic.TABLE_NAME, dic.INDEX_NAME, dic.COLUMN_POSITION |
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SQL; |
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$result = []; |
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$command = $this->db->createCommand($query, [ |
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':tableName' => $table->name, |
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':schemaName' => $table->schemaName, |
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]); |
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foreach ($command->queryAll() as $row) { |
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$result[$row['INDEX_NAME']][] = $row['COLUMN_NAME']; |
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} |
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return $result; |
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} |
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/** |
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* Extracts the data types for the given column |
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* @param ColumnSchema $column |
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* @param string $dbType DB type |
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* @param string $precision total number of digits. |
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* This parameter is available since version 2.0.4. |
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* @param string $scale number of digits on the right of the decimal separator. |
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* This parameter is available since version 2.0.4. |
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* @param string $length length for character types. |
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* This parameter is available since version 2.0.4. |
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*/ |
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protected function extractColumnType($column, $dbType, $precision, $scale, $length) |
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{ |
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$column->dbType = $dbType; |
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if (strpos($dbType, 'FLOAT') !== false || strpos($dbType, 'DOUBLE') !== false) { |
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$column->type = 'double'; |
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} elseif ($dbType === 'NUMBER' || strpos($dbType, 'INTEGER') !== false) { |
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if ($scale !== null && $scale > 0) { |
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$column->type = 'decimal'; |
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} else { |
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$column->type = 'integer'; |
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} |
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} elseif (strpos($dbType, 'BLOB') !== false) { |
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$column->type = 'binary'; |
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} elseif (strpos($dbType, 'CLOB') !== false) { |
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$column->type = 'text'; |
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} elseif (strpos($dbType, 'TIMESTAMP') !== false) { |
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$column->type = 'timestamp'; |
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} else { |
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$column->type = 'string'; |
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} |
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} |
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/** |
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* Extracts size, precision and scale information from column's DB type. |
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* @param ColumnSchema $column |
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* @param string $dbType the column's DB type |
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* @param string $precision total number of digits. |
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* This parameter is available since version 2.0.4. |
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* @param string $scale number of digits on the right of the decimal separator. |
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* This parameter is available since version 2.0.4. |
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* @param string $length length for character types. |
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* This parameter is available since version 2.0.4. |
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*/ |
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protected function extractColumnSize($column, $dbType, $precision, $scale, $length) |
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{ |
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$column->size = trim($length) === '' ? null : (int) $length; |
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$column->precision = trim($precision) === '' ? null : (int) $precision; |
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$column->scale = trim($scale) === '' ? null : (int) $scale; |
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} |
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/** |
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* @inheritdoc |
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*/ |
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public function insert($table, $columns) |
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{ |
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$params = []; |
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$returnParams = []; |
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$sql = $this->db->getQueryBuilder()->insert($table, $columns, $params); |
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$tableSchema = $this->getTableSchema($table); |
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$returnColumns = $tableSchema->primaryKey; |
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if (!empty($returnColumns)) { |
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$columnSchemas = $tableSchema->columns; |
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$returning = []; |
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foreach ((array) $returnColumns as $name) { |
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$phName = QueryBuilder::PARAM_PREFIX . (count($params) + count($returnParams)); |
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$returnParams[$phName] = [ |
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'column' => $name, |
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'value' => null, |
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]; |
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if (!isset($columnSchemas[$name]) || $columnSchemas[$name]->phpType !== 'integer') { |
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$returnParams[$phName]['dataType'] = \PDO::PARAM_STR; |
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} else { |
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$returnParams[$phName]['dataType'] = \PDO::PARAM_INT; |
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} |
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$returnParams[$phName]['size'] = isset($columnSchemas[$name]) && isset($columnSchemas[$name]->size) ? $columnSchemas[$name]->size : -1; |
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$returning[] = $this->quoteColumnName($name); |
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} |
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$sql .= ' RETURNING ' . implode(', ', $returning) . ' INTO ' . implode(', ', array_keys($returnParams)); |
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} |
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$command = $this->db->createCommand($sql, $params); |
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$command->prepare(false); |
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foreach ($returnParams as $name => &$value) { |
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$command->pdoStatement->bindParam($name, $value['value'], $value['dataType'], $value['size']); |
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} |
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if (!$command->execute()) { |
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return false; |
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} |
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$result = []; |
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foreach ($returnParams as $value) { |
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$result[$value['column']] = $value['value']; |
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} |
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return $result; |
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} |
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}
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