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			48 lines
		
	
	
		
			1.6 KiB
		
	
	
	
		
			PHP
		
	
	
	
	
	
			
		
		
	
	
			48 lines
		
	
	
		
			1.6 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;
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/**
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 * ViewFinderTrait implements the method getViewNames for finding views in a database.
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 *
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 * @author Qiang Xue <qiang.xue@gmail.com>
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 * @author Bob Olde Hampsink <b.oldehampsink@nerds.company>
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 * @since 2.0.12
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 */
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trait ViewFinderTrait
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{
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    /**
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     * @var array list of ALL view names in the database
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     */
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    private $_viewNames = [];
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    /**
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     * Returns all views names in the database.
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     * @param string $schema the schema of the views. Defaults to empty string, meaning the current or default schema.
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     * @return array all views names in the database. The names have NO schema name prefix.
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     */
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    abstract protected function findViewNames($schema = '');
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    /**
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     * Returns all view names in the database.
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     * @param string $schema the schema of the views. Defaults to empty string, meaning the current or default schema name.
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     * If not empty, the returned view names will be prefixed with the schema name.
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     * @param bool $refresh whether to fetch the latest available view names. If this is false,
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     * view names fetched previously (if available) will be returned.
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     * @return string[] all view names in the database.
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     */
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    public function getViewNames($schema = '', $refresh = false)
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    {
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        if (!isset($this->_viewNames[$schema]) || $refresh) {
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            $this->_viewNames[$schema] = $this->findViewNames($schema);
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        }
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        return $this->_viewNames[$schema];
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    }
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}
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