class.arStatementCollection.php

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<?php
require_once('class.arStatement.php');

abstract class arStatementCollection
{

    protected static $cache = array();
    protected $statements = array();
    protected $ar;


    public function add(arStatement $statement)
    {
        $this->statements[] = $statement;
    }


    public function hasStatements()
    {
        return count($this->statements) > 0;
    }


    public static function getInstance(ActiveRecord $ar)
    {
        $classname = get_called_class();
        $arWhereCollection = new $classname();
        $arWhereCollection->setAr($ar);

        return $arWhereCollection;
    }


    abstract public function asSQLStatement();



    public function setAr($ar)
    {
        $this->ar = $ar;
    }


    public function getAr()
    {
        return $this->ar;
    }


    public function setStatements($statements)
    {
        $this->statements = $statements;
    }


    public function getStatements()
    {
        return $this->statements;
    }
}