<?php
class ArrayDataProvider extends \CDataProvider
{
    /**
     * @var string the name of the key field. This is a field that uniquely identifies a
     * data record. In database this would be the primary key.
     * Defaults to 'id'. If it's set to false, keys of {@link rawData} array are used.
     */
    public $keyField='id';

    /**
     * @var array the data that is not paginated or sorted. When pagination is enabled,
     * this property usually contains more elements than {@link data}.
     * The array elements must use zero-based integer keys.
     */
    public $rawData=array();

    /**
     * Constructor.
     * @param array $rawData the data that is not paginated or sorted. The array elements must use zero-based integer keys.
     * @param array $config configuration (name=>value) to be applied as the initial property values of this class.
     */
    public function __construct($rawData,$config=array())
    {
        $this->rawData=$rawData;
        foreach($config as $key=>$value)
            $this->$key=$value;
    }

    protected function fetchData()
    {
        return $this->rawData;
    }

    protected function fetchKeys()
    {
        if($this->keyField===false)
            return array_keys($this->rawData);
        $keys=array();
        foreach($this->getData() as $i=>$data)
            $keys[$i]=is_object($data) ? $data->{$this->keyField} : $data[$this->keyField];
        return $keys;
    }

    protected function calculateTotalItemCount()
    {
        return count($this->rawData);
    }
}