• Note: requires TAO >= 3.1

Request to API

The entry point is located on taoResultServer extension:

    http://_your_tao_server_/taoResultServer/QtiRestResults

This API is only available via the HTTP GET method for the moment. It has two endpoints.

• getLatest: requires two parameters, testtaker uri and delivery uri
• getQtiResultXml: requires two parameters, delivery uri and result identifier.

Response from API

All responses are REST compliant.

• 200 - OK Request was correctly handled, there are some results

• 400 - Bad request Error on request sent to API, occurs in case of missing parameter(s) (testtaker and delivery mandatory or deliveryExecution mandatory)
  Error message: At least one mandatory parameter was required but found missing in your request

• 401 - Unauthorized Supplied credentials are not valid

• 404 - Not Found Request was correctly handled, there are no result
  Error message: Provided parameters don't match with any delivery execution.

• 405 - Method Not Allowed Used method is not allowed

• 406 - Not Acceptable The request can not be accepted by the server.

• 500 - Internal error Should never happen

Swagger description

https://hub.taocloud.org/restapis/tag/tao-outcome

Sample code

    // Entry point of QTI results api
    $apiUrl = 'http://taoLocation.com/taoResultServer/QtiRestResults';

    // Parameters required to proceed request, take care to escape uri variable
    $testtakerUri = urlencode('http://tao.local/mytao.rdf#xxxxxxxxxxxx');
    $deliveryUri = urlencode('http://tao.local/mytao.rdf#xxxxxxxxxxxx');

    // Case A: Result id for delivery execution
    $resultId = urlencode('http://tao.local/mytao.rdf#xxxxxxxxxxxx');

    // Case B: Result id for LTI delivery.
    $resultId = 'bf29e71611330b19a723e2bed6f47255';

    // Initialize the cURL request to get the latest results for a given test-taker and delivery
    $process = curl_init($apiUrl . '/getLatest?testtaker=' . $testtakerUri . '&delivery=' . $deliveryUri);

    // OR Initialize the cURL request to get a specific result (by default the result identifier is the same as the delivery execution identifier)
    $process = curl_init($apiUrl . '/getQtiResultXml?delivery=' . $deliveryUri . '&result=' . $resultId);

    // Call api with HTTP GET method
    curl_setopt($process, CURLOPT_HTTPGET, 1);

    // Choose your output, QTI data is based on XML
    curl_setopt($process, CURLOPT_HTTPHEADER, array("Accept: application/xml"));

    // Get response as a string instead of output it directly
    curl_setopt($process, CURLOPT_RETURNTRANSFER , true);

    // Set up your TAO credential
    curl_setopt($process, CURLOPT_USERPWD, "user:password");

    // Proceed the curl request
    $data = curl_exec($process);

    // REST communicate through HTTP code, take care of it
    $httpCode = curl_getinfo($process, CURLINFO_HTTP_CODE);

     // Close process handling
    curl_close($process);

Example of a QTI result

    <assessmentResult xmlns="http://www.imsglobal.org/xsd/imsqti_result_v2p1">
        <context sourcedId="i146159695175850"/>
        <testResult identifier="rdf#i1461597149361066" datestamp="2016-04-25T15:13:10.692">
            <outcomeVariable identifier="SECTION_EXIT_CODE_assessmentSection-1" cardinality="single" baseType="string">
                <value>700</value>
            </outcomeVariable>
            <outcomeVariable identifier="LtiOutcome" cardinality="single" baseType="float">
                <value>0</value>
            </outcomeVariable>
        </testResult>
        <itemResult identifier="item-1" datestamp="2016-04-25T15:12:44.790" sessionStatus="final">
            <responseVariable identifier="numAttempts" cardinality="single" baseType="integer">
                <candidateResponse>
                    <value>
                        <![CDATA[ 1 ]]>
                    </value>
                </candidateResponse>
            </responseVariable>
            <responseVariable identifier="duration" cardinality="single" baseType="duration">
                <candidateResponse>
                    <value>
                        <![CDATA[ PT12.336017S ]]>
                    </value>
                </candidateResponse>
            </responseVariable>
            <outcomeVariable identifier="completionStatus" cardinality="single" baseType="identifier">
                <value>
                    <![CDATA[ completed ]]>
                </value>
            </outcomeVariable>
            <outcomeVariable identifier="SCORE" cardinality="single" baseType="float">
                <value>
                    <![CDATA[ 0 ]]>
                </value>
            </outcomeVariable>
            <responseVariable identifier="RESPONSE" cardinality="single" baseType="directedPair">
                <candidateResponse>
                    <value>
                        <![CDATA[ M A ]]>
                    </value>
                </candidateResponse>
            </responseVariable>
            <outcomeVariable identifier="ITEM_END_TIME_CLIENT" cardinality="single" baseType="string">
                <value>
                    <![CDATA[ 1461597162.52 ]]>
                </value>
            </outcomeVariable>
            <outcomeVariable identifier="ITEM_TIMEZONE" cardinality="single" baseType="string">
                <value>
                    <![CDATA[ +02:00 ]]>
                </value>
            </outcomeVariable>
            <outcomeVariable identifier="ITEM_START_TIME_CLIENT" cardinality="single" baseType="string">
                <value>
                    <![CDATA[ 1461597157.988 ]]>
                </value>
            </outcomeVariable>
        </itemResult>
        <itemResult identifier="item-2" datestamp="2016-04-25T15:12:59.335" sessionStatus="final">
            <responseVariable identifier="numAttempts" cardinality="single" baseType="integer">
                <candidateResponse>
                    <value>
                        <![CDATA[ 1 ]]>
                    </value>
                </candidateResponse>
            </responseVariable>
            <responseVariable identifier="duration" cardinality="single" baseType="duration">
                <candidateResponse>
                    <value>
                        <![CDATA[ PT13.052298S ]]>
                    </value>
                </candidateResponse>
            </responseVariable>
            <outcomeVariable identifier="completionStatus" cardinality="single" baseType="identifier">
                <value>
                    <![CDATA[ completed ]]>
                </value>
            </outcomeVariable>
            <outcomeVariable identifier="SCORE" cardinality="single" baseType="float">
                <value>
                    <![CDATA[ 0 ]]>
                </value>
            </outcomeVariable>
            <responseVariable identifier="RESPONSE" cardinality="multiple" baseType="pair">
                <candidateResponse>
                    <value>
                        <![CDATA[ a M ]]>
                    </value>
                </candidateResponse>
            </responseVariable>
            <outcomeVariable identifier="ITEM_END_TIME_CLIENT" cardinality="single" baseType="string">
                <value>
                    <![CDATA[ 1461597177.703 ]]>
                </value>
            </outcomeVariable>
            <outcomeVariable identifier="ITEM_TIMEZONE" cardinality="single" baseType="string">
                <value>
                    <![CDATA[ +02:00 ]]>
                </value>
            </outcomeVariable>
            <outcomeVariable identifier="ITEM_START_TIME_CLIENT" cardinality="single" baseType="string">
                <value>
                    <![CDATA[ 1461597169.499 ]]>
                </value>
            </outcomeVariable>
        </itemResult>
        <itemResult identifier="item-3" datestamp="2016-04-25T15:13:09.481" sessionStatus="final">
            <responseVariable identifier="numAttempts" cardinality="single" baseType="integer">
                <candidateResponse>
                    <value>
                        <![CDATA[ 1 ]]>
                    </value>
                </candidateResponse>
            </responseVariable>
            <responseVariable identifier="duration" cardinality="single" baseType="duration">
                <candidateResponse>
                    <value>
                        <![CDATA[ PT9.128763S ]]>
                    </value>
                </candidateResponse>
            </responseVariable>
            <outcomeVariable identifier="completionStatus" cardinality="single" baseType="identifier">
                <value>
                    <![CDATA[ completed ]]>
                </value>
            </outcomeVariable>
            <outcomeVariable identifier="SCORE" cardinality="single" baseType="float">
                <value>
                    <![CDATA[ 0 ]]>
                </value>
            </outcomeVariable>
            <responseVariable identifier="RESPONSE" cardinality="ordered" baseType="identifier">
                <candidateResponse>
                    <value>
                        <![CDATA[ ContemporaryEra ]]>
                    </value>
                    <value>
                        <![CDATA[ ModernEra ]]>
                    </value>
                    <value>
                        <![CDATA[ Antiquity ]]>
                    </value>
                </candidateResponse>
            </responseVariable>
            <outcomeVariable identifier="ITEM_END_TIME_CLIENT" cardinality="single" baseType="string">
                <value>
                    <![CDATA[ 1461597187.557 ]]>
                </value>
            </outcomeVariable>
            <outcomeVariable identifier="ITEM_TIMEZONE" cardinality="single" baseType="string">
                <value>
                    <![CDATA[ +02:00 ]]>
                </value>
            </outcomeVariable>
            <outcomeVariable identifier="ITEM_START_TIME_CLIENT" cardinality="single" baseType="string">
                <value>
                    <![CDATA[ 1461597182.959 ]]>
                </value>
            </outcomeVariable>
        </itemResult>
    </assessmentResult>