/**
* returns a single data search document based on a data entry id
* @uses $DB
* @param in $id the id of the record
* @param string $itemtype the type of the information
* @return a single searchable document
*/
function data_single_document($id, $itemtype)
{
global $DB;
if ($itemtype == 'record') {
// get main record
$recordMetaData = $DB->get_record('data_records', array('id' => $id));
// get context
$record_course = $DB->get_field('data', 'course', array('id' => $recordMetaData->dataid));
$coursemodule = $DB->get_field('modules', 'id', array('name' => 'data'));
$cm = $DB->get_record('course_modules', array('course' => $record_course, 'module' => $coursemodule, 'instance' => $recordMetaData->dataid));
$context = get_context_instance(CONTEXT_MODULE, $cm->id);
// compute text
$recordData = data_get_records($recordMetaData->dataid, 'text,textarea', $id);
if ($recordData) {
$dataArray = array_values($recordData);
$record_content = $dataArray[0];
// We cannot have more than one record here
// extract title as first record in order
$first = $record_content['_first'];
unset($record_content['_first']);
// concatenates all other texts
$content = '';
foreach ($record_content as $aField) {
$content = @$content . ' ' . $aField;
}
unset($recordMetaData);
$recordMetaData = $DB->get_record('data_records', array('id' => $id));
$recordMetaData->title = $first;
$recordMetaData->content = $content;
return new DataSearchDocument(get_object_vars($recordMetaData), $record_course, $context->id);
}
} elseif ($itemtype == 'comment') {
// get main records
$comment = $DB->get_record('data_comments', array('id' => $id));
$record = $DB->get_record('data_records', array('id' => $comment->recordid));
// get context
$record_course = $DB->get_field('data', 'course', array('id' => $record->dataid));
$coursemodule = $DB->get_field('modules', 'id', array('name' => 'data'));
$cm = $DB->get_record('course_modules', array('course' => $record_course, 'module' => $coursemodule, 'instance' => $recordMetaData->dataid));
$context = get_context_instance(CONTEXT_MODULE, $cm->id);
// add extra fields
$comment->title = $DB->get_field('search_document', 'title', array('docid' => $record->id, 'itemtype' => 'record'));
$comment->dataid = $record->dataid;
$comment->groupid = $record->groupid;
$authoruser = $DB->get_record('user', array('id' => $comment->userid));
$comment->author = fullname($authoruser);
// make document
return new DataCommentSearchDocument(get_object_vars($comment), $record_course, $context->id);
} else {
mtrace('Error : bad or missing item type');
return NULL;
}
}
/**
* part of search engine API
* @param database the database instance
* @return an array of searchable documents
*/
function data_get_content_for_index(&$database)
{
$documents = array();
$recordTitles = array();
$coursemodule = get_field('modules', 'id', 'name', 'data');
$cm = get_record('course_modules', 'course', $database->course, 'module', $coursemodule, 'instance', $database->id);
$context = get_context_instance(CONTEXT_MODULE, $cm->id);
// getting records for indexing
$records_content = data_get_records($database->id, 'text');
if ($records_content) {
foreach (array_keys($records_content) as $aRecordId) {
// extract title as first record in order
$first = $records_content[$aRecordId]['_first'];
unset($records_content[$aRecordId]['_first']);
// concatenates all other texts
foreach ($records_content[$aRecordId] as $aField) {
$content = @$content . ' ' . $aField;
}
if (strlen($content) > 0) {
unset($recordMetaData);
$recordMetaData = get_record('data_records', 'id', $aRecordId);
$recordMetaData->title = $first;
$recordTitles[$aRecordId] = $first;
$recordMetaData->content = $content;
$documents[] = new DataSearchDocument(get_object_vars($recordMetaData), $database->course, $context->id);
}
}
}
// getting comments for indexing
$records_comments = data_get_comments($database->id);
if ($records_comments) {
foreach ($records_comments as $aComment) {
$aComment->title = $recordsTitle[$aComment->recordid];
$documents[] = new DataCommentSearchDocument(get_object_vars($aComment), $database->course, $context->id);
}
}
return $documents;
}