db); } public function quoteTableName($name) { if (strpos($name, '.') === false) { return $this->quoteSimpleTableName($name); } $parts = explode('.', $name); foreach ($parts as $i => $part) { $parts[$i] = $this->quoteSimpleTableName($part); } return implode('.', $parts); } public function quoteSimpleTableName($name) { return '"' . $name . '"'; //return $name; } public function quoteColumnName($name) { if (($pos = strrpos($name, '.')) !== false) { $prefix = $this->quoteTableName(substr($name, 0, $pos)) . '.'; $name = substr($name, $pos + 1); } else { $prefix = ''; } return $prefix . ($name === '*' ? $name : $this->quoteSimpleColumnName($name)); } public function quoteSimpleColumnName($name) { return '"' . $name . '"'; //return $name; } public function loadTableSchema($name) { $table = new TableSchema(); $this->resolveTableNames($table, $name); // $this->findPrimaryKeys($table); if ($this->findColumns($table)) { //$this->findForeignKeys($table); $this->findConstraints($table); return $table; } } /** * Resolves the table name and schema name (if any). * * @param TableSchema $table the table metadata object * @param string $name the table name */ protected function resolveTableNames($table, $name) { $parts = explode('.', str_replace('"', '', $name)); if (isset($parts[1])) { $table->schemaName = $parts[0]; $table->name = $parts[1]; } else { $table->name = $parts[0]; } if ($table->schemaName === null) { $table->schemaName = $this->getDefaultSchema(); } } /** * * @return string default schema. */ public function getDefaultSchema() { if (!strlen($this->_defaultSchema)) { $this->setDefaultSchema(strtoupper($this->db->username)); } return $this->_defaultSchema; } /** * * @param string $schema default schema. */ public function setDefaultSchema($schema) { $this->_defaultSchema = $schema; } public function getLastInsertID($sequenceName = '') { if ($this->db->isActive) { $sql = "select {$sequenceName}.currval from dual"; return $this->db->createCommand($sql)->queryScalar(); } else { throw new InvalidCallException('DB Connection is not active.'); } } /** * Collects the table column metadata. * @param COciTableSchema $table the table metadata * @return boolean whether the table exists in the database */ protected function findColumns($table) { $schemaName = $table->schemaName; $tableName = $table->name; $sql = << 0 then ',' || a.data_scale else '' end || ')' when data_type = 'DATE' then '' when data_type = 'NUMBER' then '' else '(' || to_char(a.data_length) || ')' end as data_type, a.nullable, a.data_default, ( SELECT D.constraint_type FROM ALL_CONS_COLUMNS C inner join ALL_constraints D on D.OWNER = C.OWNER and D.constraint_name = C.constraint_name WHERE C.OWNER = B.OWNER and C.table_name = B.object_name and C.column_name = A.column_name and D.constraint_type = 'P') as Key, com.comments as column_comment FROM ALL_TAB_COLUMNS A inner join ALL_OBJECTS B ON b.owner = a.owner and ltrim(B.OBJECT_NAME) = ltrim(A.TABLE_NAME) LEFT JOIN user_col_comments com ON (A.table_name = com.table_name AND A.column_name = com.column_name) WHERE a.owner = '{$schemaName}' and (b.object_type = 'TABLE' or b.object_type = 'VIEW') and b.object_name = '{$tableName}' ORDER by a.column_id EOD; try { $columns = $this->db->createCommand($sql)->queryAll(); } catch (\Exception $e) { return false; } foreach ($columns as $column) { $c = $this->createColumn($column); $table->columns[$c->name] = $c; if ($c->isPrimaryKey) { if ($table->primaryKey === null) { $table->primaryKey = $c->name; } elseif (is_string($table->primaryKey)) { $table->primaryKey = array($table->primaryKey, $c->name); } else { $table->primaryKey[] = $c->name; } $sql = "select sequence_name from user_tables tabs join user_triggers trigs on trigs.table_name = tabs.table_name join user_dependencies deps on deps.name = trigs.trigger_name join user_sequences seqs on seqs.sequence_name = deps.referenced_name where tabs.table_name = '{$tableName}' and trigs.triggering_event = 'INSERT'"; try { $seqName = $this->db->createCommand($sql)->queryScalar(); } catch (\Exception $e) { return false; } $table->sequenceName = $seqName; $c->autoIncrement = true; } } return true; } protected function createColumn($column) { $c = new ColumnSchema; $c->name = $column['COLUMN_NAME']; $c->allowNull = $column['NULLABLE'] === 'Y'; $c->isPrimaryKey = strpos($column['KEY'], 'P') !== false; $c->extract($column['DATA_TYPE'], $column['DATA_DEFAULT']); $c->comment = $column['COLUMN_COMMENT'] === null ? '' : $column['COLUMN_COMMENT']; return $c; } protected function findConstraints($table) { $sql = << 'P' order by d.constraint_name, c.position EOD; $command = $this->db->createCommand($sql); foreach ($command->queryAll() as $row) { if ($row['CONSTRAINT_TYPE'] === 'R') { // foreign key $name = $row["COLUMN_NAME"]; $table->foreignKeys[$name] = array($row["TABLE_REF"], $row["COLUMN_REF"]); /* if (isset($table->columns[$name])) { $table->columns[$name]->isForeignKey = true; } * */ } } } /** * Returns all table names in the database. * @param string $schema the schema of the tables. Defaults to empty string, meaning the current or default schema. * If not empty, the returned table names will be prefixed with the schema name. * @return array all table names in the database. */ protected function findTableNames($schema = '') { if ($schema === '') { $sql = <<db->createCommand($sql); } else { $sql = <<db > createCommand($sql); $command->bindParam(':schema', $schema); } $rows = $command->queryAll(); $names = array(); foreach ($rows as $row) { if ($schema === $this->getDefaultSchema() || $schema === '') { $names[] = $row['TABLE_NAME']; } else { $names[] = $row['TABLE_SCHEMA'] . '.' . $row['TABLE_NAME']; } } return $names; } /** * Builds a SQL statement for renaming a DB table. * @param string $table the table to be renamed. The name will be properly quoted by the method. * @param string $newName the new table name. The name will be properly quoted by the method. * @return string the SQL statement for renaming a DB table. * @since 1.1.6 */ public function renameTable($table, $newName) { return 'ALTER TABLE ' . $this->quoteTableName($table) . ' RENAME TO ' . $this->quoteTableName($newName); } /** * Builds a SQL statement for changing the definition of a column. * @param string $table the table whose column is to be changed. The table name will be properly quoted by the method. * @param string $column the name of the column to be changed. The name will be properly quoted by the method. * @param string $type the new column type. The {@link getColumnType} method will be invoked to convert abstract column type (if any) * into the physical one. Anything that is not recognized as abstract type will be kept in the generated SQL. * For example, 'string' will be turned into 'varchar(255)', while 'string not null' will become 'varchar(255) not null'. * @return string the SQL statement for changing the definition of a column. * @since 1.1.6 */ public function alterColumn($table, $column, $type) { $type = $this->getColumnType($type); $sql = 'ALTER TABLE ' . $this->quoteTableName($table) . ' MODIFY ' . $this->quoteColumnName($column) . ' ' . $this->getColumnType($type); return $sql; } /** * Builds a SQL statement for dropping an index. * @param string $name the name of the index to be dropped. The name will be properly quoted by the method. * @param string $table the table whose index is to be dropped. The name will be properly quoted by the method. * @return string the SQL statement for dropping an index. * @since 1.1.6 */ public function dropIndex($name, $table) { return 'DROP INDEX ' . $this->quoteTableName($name); } /** * Resets the sequence value of a table's primary key. * The sequence will be reset such that the primary key of the next new row inserted * will have the specified value or 1. * @param CDbTableSchema $table the table schema whose primary key sequence will be reset * @param mixed $value the value for the primary key of the next new row inserted. If this is not set, * the next new row's primary key will have a value 1. * @since 1.1.13 */ public function resetSequence($table, $value = 1) { $seq = $table->name . "_SEQ"; if ($table->sequenceName !== null) { $this->db->createCommand("DROP SEQUENCE " . $seq)->execute(); $createSequenceSql = <<< SQL create sequence $seq start with $value increment by 1 nomaxvalue nocache SQL; $this->db->createCommand($createSequenceSql)->execute(); } } }