419 lines
14 KiB
PHP
419 lines
14 KiB
PHP
<?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\Constraint;
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use yii\db\ConstraintFinderInterface;
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use yii\db\ConstraintFinderTrait;
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use yii\db\Expression;
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use yii\db\ForeignKeyConstraint;
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use yii\db\IndexConstraint;
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use yii\db\TableSchema;
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use yii\db\Transaction;
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use yii\helpers\ArrayHelper;
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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 implements ConstraintFinderInterface
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{
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use ConstraintFinderTrait;
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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_DOUBLE,
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'double precision' => self::TYPE_DOUBLE,
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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_CHAR,
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'varchar' => self::TYPE_STRING,
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'char varying' => self::TYPE_STRING,
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'nchar' => self::TYPE_CHAR,
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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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protected $tableQuoteCharacter = '"';
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/**
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* {@inheritdoc}
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*/
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protected function findTableNames($schema = '')
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{
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$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 $tableNames;
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}
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/**
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* {@inheritdoc}
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*/
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protected function loadTableSchema($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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return $table;
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}
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/**
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* {@inheritdoc}
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*/
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protected function loadTablePrimaryKey($tableName)
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{
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$primaryKey = $this->db->getSlavePdo()->cubrid_schema(\PDO::CUBRID_SCH_PRIMARY_KEY, $tableName);
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if (empty($primaryKey)) {
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return null;
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}
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ArrayHelper::multisort($primaryKey, 'KEY_SEQ', SORT_ASC, SORT_NUMERIC);
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return new Constraint([
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'name' => $primaryKey[0]['KEY_NAME'],
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'columnNames' => ArrayHelper::getColumn($primaryKey, 'ATTR_NAME'),
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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 loadTableForeignKeys($tableName)
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{
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static $actionTypes = [
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0 => 'CASCADE',
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1 => 'RESTRICT',
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2 => 'NO ACTION',
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3 => 'SET NULL',
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];
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$foreignKeys = $this->db->getSlavePdo()->cubrid_schema(\PDO::CUBRID_SCH_IMPORTED_KEYS, $tableName);
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$foreignKeys = ArrayHelper::index($foreignKeys, null, 'FK_NAME');
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ArrayHelper::multisort($foreignKeys, 'KEY_SEQ', SORT_ASC, SORT_NUMERIC);
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$result = [];
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foreach ($foreignKeys as $name => $foreignKey) {
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$result[] = new ForeignKeyConstraint([
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'name' => $name,
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'columnNames' => ArrayHelper::getColumn($foreignKey, 'FKCOLUMN_NAME'),
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'foreignTableName' => $foreignKey[0]['PKTABLE_NAME'],
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'foreignColumnNames' => ArrayHelper::getColumn($foreignKey, 'PKCOLUMN_NAME'),
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'onDelete' => isset($actionTypes[$foreignKey[0]['DELETE_RULE']]) ? $actionTypes[$foreignKey[0]['DELETE_RULE']] : null,
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'onUpdate' => isset($actionTypes[$foreignKey[0]['UPDATE_RULE']]) ? $actionTypes[$foreignKey[0]['UPDATE_RULE']] : null,
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]);
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}
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return $result;
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}
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/**
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* {@inheritdoc}
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*/
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protected function loadTableIndexes($tableName)
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{
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return $this->loadTableConstraints($tableName, 'indexes');
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}
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/**
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* {@inheritdoc}
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*/
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protected function loadTableUniques($tableName)
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{
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return $this->loadTableConstraints($tableName, 'uniques');
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}
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/**
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* {@inheritdoc}
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* @throws NotSupportedException if this method is called.
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*/
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protected function loadTableChecks($tableName)
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{
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throw new NotSupportedException('CUBRID does not support check constraints.');
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}
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/**
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* {@inheritdoc}
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* @throws NotSupportedException if this method is called.
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*/
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protected function loadTableDefaultValues($tableName)
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{
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throw new NotSupportedException('CUBRID does not support default value constraints.');
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}
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/**
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* {@inheritdoc}
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*/
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public function releaseSavepoint($name)
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{
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// does nothing as cubrid does not support this
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}
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/**
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* Creates a query builder for the CUBRID database.
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* @return QueryBuilder query builder instance
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*/
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public function createQueryBuilder()
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{
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return new QueryBuilder($this->db);
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}
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/**
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* Loads the column information into a [[ColumnSchema]] object.
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* @param array $info column information
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* @return \yii\db\ColumnSchema the column schema object
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*/
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protected function loadColumnSchema($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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* Determines the PDO type for the given PHP data value.
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* @param mixed $data the data whose PDO type is to be determined
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* @return int the PDO type
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* @see http://www.php.net/manual/en/pdo.constants.php
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*/
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public function getPdoType($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($level);
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}
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/**
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* {@inheritdoc}
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*/
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public function createColumnSchemaBuilder($type, $length = null)
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{
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return new ColumnSchemaBuilder($type, $length, $this->db);
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}
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/**
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* Loads multiple types of constraints and returns the specified ones.
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* @param string $tableName table name.
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* @param string $returnType return type:
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* - indexes
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* - uniques
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* @return mixed constraints.
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*/
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private function loadTableConstraints($tableName, $returnType)
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{
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$constraints = $this->db->getSlavePdo()->cubrid_schema(\PDO::CUBRID_SCH_CONSTRAINT, $tableName);
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$constraints = ArrayHelper::index($constraints, null, ['TYPE', 'NAME']);
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ArrayHelper::multisort($constraints, 'KEY_ORDER', SORT_ASC, SORT_NUMERIC);
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$result = [
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'indexes' => [],
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'uniques' => [],
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];
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foreach ($constraints as $type => $names) {
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foreach ($names as $name => $constraint) {
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$isUnique = in_array((int) $type, [0, 2], true);
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$result['indexes'][] = new IndexConstraint([
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'isPrimary' => (bool) $constraint[0]['PRIMARY_KEY'],
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'isUnique' => $isUnique,
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'name' => $name,
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'columnNames' => ArrayHelper::getColumn($constraint, 'ATTR_NAME'),
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]);
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if ($isUnique) {
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$result['uniques'][] = new Constraint([
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'name' => $name,
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'columnNames' => ArrayHelper::getColumn($constraint, 'ATTR_NAME'),
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]);
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}
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}
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}
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foreach ($result as $type => $data) {
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$this->setTableMetadata($tableName, $type, $data);
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}
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return $result[$returnType];
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}
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}
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