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<?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\sphinx;
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use yii\db\ColumnSchema;
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use yii\db\TableSchema;
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/**
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* Class Schema
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*
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* @author Paul Klimov <klimov.paul@gmail.com>
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* @since 2.0
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*/
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class Schema extends \yii\db\mysql\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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*/
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public $typeMap = [
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'field' => self::TYPE_STRING,
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'string' => self::TYPE_STRING,
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'ordinal' => self::TYPE_STRING,
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'integer' => self::TYPE_INTEGER,
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'int' => self::TYPE_INTEGER,
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'uint' => self::TYPE_INTEGER,
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'bigint' => self::TYPE_BIGINT,
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'timestamp' => self::TYPE_TIMESTAMP,
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'bool' => self::TYPE_BOOLEAN,
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'float' => self::TYPE_FLOAT,
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'mva' => self::TYPE_STRING,
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];
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/**
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* Creates a query builder for the database.
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* This method may be overridden by child classes to create a DBMS-specific query builder.
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* @return QueryBuilder query builder instance
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*/
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public function createQueryBuilder()
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{
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return new QueryBuilder($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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$table = new TableSchema;
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$this->resolveTableNames($table, $name);
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if ($this->findColumns($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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* Collects the metadata of table columns.
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* @param TableSchema $table the table metadata
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* @return boolean whether the table exists in the database
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* @throws \Exception if DB query fails
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*/
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protected function findColumns($table)
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{
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$sql = 'DESCRIBE ' . $this->quoteSimpleTableName($table->name);
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try {
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$columns = $this->db->createCommand($sql)->queryAll();
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} catch (\Exception $e) {
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$previous = $e->getPrevious();
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if ($previous instanceof \PDOException && $previous->getCode() == '42S02') {
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// index does not exist
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return false;
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}
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throw $e;
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}
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foreach ($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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}
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}
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return true;
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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->isPrimaryKey = ($column->name == 'id');
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// Not supported :
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//$column->allowNull = $info['Null'] === 'YES';
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//$column->autoIncrement = stripos($info['Extra'], 'auto_increment') !== false;
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//$column->comment = $info['Comment'];
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$column->dbType = $info['Type'];
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//$column->unsigned = strpos($column->dbType, 'unsigned') !== false;
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$type = $info['Type'];
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if (isset($this->typeMap[$type])) {
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$column->type = $this->typeMap[$type];
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} else {
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$column->type = self::TYPE_STRING;
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}
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$column->phpType = $this->getColumnPhpType($column);
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/*if ($column->type !== 'timestamp' || $info['Default'] !== 'CURRENT_TIMESTAMP') {
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$column->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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