public function export(Export\ExportStream $stream, Export\ExportContext $context) {
$datasource = gd_datasource_get_active();
$readOnly = gd_datasource_is_property($datasource, 'readonly');
if ($readOnly) {
return;
}
$metamodel = data_controller_get_metamodel();
// get reference points that have ref to the dataset in this datamart
$datasetNames = array();
foreach ( $stream->get('datasets') as $d ) {
$datasetNames[] = $d->name;
}
$referencePoints = array();
$referencePointNodes = gd_reference_get_reference_points_by_dataset($datasetNames, LOAD_ENTITY);
$referencePointNids = array();
foreach ( $referencePointNodes as $ref_point ) {
$export = new stdClass();
$export->id = (int) $ref_point->nid;
$export->title = $ref_point->title;
$dataset = $metamodel->getDataset(get_node_field_value($ref_point,'field_ref_point_dataset_sysname',0,'value',true));
$export->dataset = $dataset->uuid;
$export->columns = array();
foreach ( (array) get_node_field_value($ref_point,'field_ref_point_column_sysname',null) as $column ) {
$export->columns[] = $column;
}
$referencePoints[] = $export;
$referencePointNids[] = (int) $ref_point->nid;
}
// find all references with above reference points
$references = array();
$referenceNodes = gd_reference_get_references_by_reference_points($referencePointNids, LOAD_ENTITY);
foreach ( $referenceNodes as $reference ) {
$export = new stdClass();
$export->id = (int) $reference->nid;
$export->title = $reference->title;
$export->sysname = get_node_field_value($reference,'field_reference_sysname');
foreach ( (array) get_node_field_node_ref($reference,'field_reference_point',null) as $referencePointNid ) {
foreach ( $referencePoints as $referencePoint ){
if ( $referencePointNid == $referencePoint->id ) {
$export->referencePoints[] = $referencePoint;
}
}
}
if ( empty($export->referencePoints) ) {
throw new Exception('Reference missing reference points.');
}
$references[] = $export;
}
$stream->set('references',$references);
}
