/**
* Create a new taoQtiCommon_helpers_PciStateOutput.
*
*/
public function __construct()
{
parent::__construct();
}
/**
* Get the output array. The returned array is an associative array where keys are the identifier
* of the variable and the values are the actual values of the variable.
*
* Each variable value is represented as an array, even if the cardinality of the variable is SINGLE. The values
* are always plain string, as the values coming in from the client-side. Find below an example of returned state
* output. Please be carefull will null values. They will be transformed as empty strings.
*
* <code>
* // The $stateOutput variable is a StateOutput object where the following variables
* // where added through the StateOutput::addVariable() method.
* // - OutcomeVariable => 'SCORE1', Cardinality:SINGLE, BaseType:INTEGER, value: 25
* // - OutcomeVariable => 'SCORE2', Cardinality:SINGLE, BaseType:URI, value: 'http://bit.ly'
* // - OutcomeVariable => 'SCORE3', Cardinality:SINGLE, BaseType:BOOLEAN, value: false
* // - OutcomeVariable => 'SCORE4', Cardinality:SINGLE, BaseType:FLOAT, value: null
* // - OutcomeVariable => 'SCORE5', Cardinality::ORDERED, BaseType:INTEGER, value: {0, -10, null, 44}
* // - OutcomeVariable => 'SCORE6', Cardinality::MULTIPLE, BaseType:PAIR, value: [new Pair('A', 'B'), new Pair('C', 'D')]
* // - OutcomeVariable => 'SCORE7', Cardinality::MULTIPLE, BaseType:POINT, value: [new Point(0, 0), new Point(-3, 4)]
* // - OutcomeVariable => 'SCORE8', Cardinality::RECORD, value: <'val1': 25.3, 'val2': null, 'val3': new Duration('PT1S')>
* $stateOutput = new taoQtiCommon_helpers_LegacyStateOutput();
* // ...
* // $stateOutput->addVariable() ...
* // $stateOutput->addVariable() ...
* // $stateOutput->addVariable() ...
* // ..
*
* $output = $stateOutput->getOutput();
*
* // The content of $output is:
* // array(
* // 'SCORE1' => array('25'),
* // 'SCORE2' => array('http://bit.ly'),
* // 'SCORE3' => array('false'),
* // 'SCORE4' => array(''),
* // 'SCORE5' => array('0', '-10', '', '44'),
* // 'SCORE6' => array(array('A', 'B'), array('C', 'D')),
* // 'SCORE7' => array(array('0', '0'), array('-3', '4'))
* // 'SCORE8' => array('val1' => '25.3', 'val2' => '', 'val3' => 'PT1S')
* // );
* </code>
*
* @return array An array of QTI Variables and their values formatted as explained supra.
*/
public function &getOutput()
{
return parent::getOutput();
}
