/** hack to Just Get A Question from current dmid, using Excercise class
* to do our factorying for us.
* Obviously the factory code needs to be refactored to ElseWhere, but not on Sunday
* :-P
* (Sun 15 Jun 2008)
*/
function getQuestion( $dmid, $questionLanguages, $answerLanguages ) {
if ( !$questionLanguages )
throw new Exception( "Vocview: no question (original) languages provided!" );
if ( !$answerLanguages )
throw new Exception( "Vocview: no answer (translation) languages provided!" );
/* 3 men walked into a bar^wExercise
* fullset, fetcher, and subset
*/
/* our regular fetcher is provided by functions.php
* I suppose if I were tidier, I could use fetchers for
* persistence
*/
$fetcher = new OWFetcher();
/* fullset is a domdocument containing a <collection> of
* empty <defined-meanings/> (just their defined-meaning-id
* attribute is set)
* This format makes sense on some days, it's just
* massive nukular overkill today, specially since
* we only have 1 element :-P
* Still, if Exercise wants this as a dom, we can oblige.
*/
$xmlString = "
<collection>
<defined-meaning defined-meaning-id=\"$dmid\" />
</collection>
";
$xml = simplexml_load_string( $xmlString );
$fullset = dom_import_simplexml( $xml )->ownerDocument;
# et voila.
/* subset is a selection of stuff we are actually
* interested in, from the above, as an array of
* dmid's .... Oh look! We have just one!
*/
$subset = array( $dmid ); # :-P
# (ok, to be honest, it does also get auto-generated
# from the fullset, if we say nothing... but
# then where would the joke be? )
# and we already had the fetcher.
# So the fullset said to the fetcher: let's do this!
$exercise = new Exercise( $fetcher, $fullset, $subset );
$exercise->setQuestionLanguages( $questionLanguages );
$exercise->setAnswerLanguages( $answerLanguages );
# Ok, now let's see. which question did we need?
# (and setting selfcheck to false)
$question = $exercise->getQuestion( $dmid, false );
# Oh REALLY! And we needed to go through all that?
# well, let's return it, before people start asking
# more difficult questions.
return $question;
}
function loadExercise( $exercise_id ) {
if ( !is_int( $exercise_id ) )
throw new Exception( "persist; loadExercise exercise_id is not an integer" );
global $mysql_info;
DBTools::connect( $mysql_info );
$exercise_id = mysql_real_escape_string( $exercise_id );
$row = DBTools::doQuery( "select * from exercises where id=\"$exercise_id\"" );
$exercise = new Exercise();
$exercise->setId( $exercise_id );
$exercise->loadXML( $row["exercise"] );
$exercise->setQuestionLanguages( explode( ",", $row["questionLanguages"] ) );
$exercise->setAnswerLanguages( explode( ",", $row["answerLanguages"] ) );
return $exercise;
}
function main() {
$collection_id = 376317; # olpc dictionary.... WAY too big
$fetcher = new OWFetcher();
echo "fullset...\n";
$fullSetXML = $fetcher->getFullSetXML_asString( $collection_id );
$fullSet = new DOMDocument();
$success = $fullSet->loadXML( $fullSetXML );
if ( !$success ) {
throw new Exception( "Failed to load category XML from server" );
}
$maxSubSet = dom2set( $fullSet );
# sort($maxSubSet); foreach ($maxSubSet as $dmid) {print "$dmid,";}
# var_dump($fullSet->saveXML());
$exercise = new Exercise( $fetcher, $fullSet, $maxSubSet ); # pwease, not the max!
# $exercise->setLanguages(array("eng","fra","deu"));
$exercise->setQuestionLanguages( array( "deu" ) );
$exercise->setAnswerLanguages( array( "eng" ) );
# $question_dmid=$maxSubSet[array_rand($maxSubSet)];
echo "question...\n";
# $questionNode=$exercise->getQuestionNode($question_dmid);
# dumpNode($questionNode);
$runex = $exercise->randSubExercise( 10 );
dumpExercise( $runex, 5 );
echo "\n\n=== presistence test ===\n\n";
saveExercise( $runex );
$exid = mysql_insert_id();
$loadex = loadExercise( $exid );
$loadex->setFetcher( $fetcher );
dumpExercise( $loadex, 10 );
}
/** create a new Exercise from scratch.
# */
public function createExercise( $userName, $size, $collection_id, $questionLanguages, $answerLanguages, $hide ) {
# this can be simplified for now...
# first get a master exercise...
$fetcher = new OWFetcher();
$fullSetXML = $fetcher->getFullSetXML_asString( $collection_id, array_merge( $questionLanguages, $answerLanguages ) );
$fullSet = new DOMDocument();
$success = $fullSet->loadXML( $fullSetXML );
if ( !$success ) {
throw new Exception( "Failed to load category XML from server" );
}
$exercise = new Exercise( $fetcher, $fullSet );
$exercise->setQuestionLanguages( $questionLanguages );
$exercise->setAnswerLanguages( $answerLanguages );
$exercise->setHide( $hide );
# This is the master exercise... which we should now store and
# worship. That's for mark II though.
# Today we toss it in the trash and just snarf a
# subset instead. Mean huh?
$subExercise = $exercise->randSubExercise( $size );
$this->saveExercise( $subExercise, $userName );
return $subExercise;
}
/** On the basis of the subset array provided, create new exercise object */
public function getSubExercize( $subset ) {
$dom = new DOMDocument();
$collection = $dom->createElement( "collection" );
$dom->appendChild( $collection );
foreach ( $subset as $dmid ) {
# Grab each node from the current full set, $_depth must always start at 0
# and ($fetch=false) we just want the current state,
# we can fetch things later at our leisure.
$questionNode = $this->_getQuestionNode( $dmid, $this->fullSet, 0, false );
$questionNode = $dom->importNode( $questionNode, true );
$collection->appendChild( $questionNode );
}
$newExercise = new Exercise( $this->fetcher, $dom, $subset );
$newExercise->setQuestionLanguages( $this->getQuestionLanguages() );
$newExercise->setAnswerLanguages( $this->getAnswerLanguages() );
$newExercise->setHide( $this->getHide() );
return $newExercise;
}
