public static function prepareReference(MetaModel $metamodel, $referenceNode, array $referencePointNodes = NULL) {
$referencePoints = $lookupReferencePoints = $interlookupReferences = NULL;
// loading reference points
$referencePointIndex = 0;
while (TRUE) {
$point_nid = get_node_field_int_value($referenceNode, 'field_reference_point', $referencePointIndex, 'nid');
if (!isset($point_nid)) {
break;
}
$referencePointNode = $referencePointNodes[$point_nid];
$datasetName = get_node_field_value($referencePointNode, 'field_ref_point_dataset_sysname', 0, 'value', TRUE);
$dataset = $metamodel->findDataset($datasetName);
if (isset($dataset)) {
$referencePoint = new DatasetReferencePoint();
$lookupReferencePoint = new DatasetReferencePoint();
$loader = MetaModelFactory::getInstance()->getLoader($dataset->loaderName);
$cube = $metamodel->getCube($dataset->name);
$referenceDatasetName = $cube->factsDatasetName;
// preparing list of columns
$referencePointColumnIndex = 0;
while (TRUE) {
$columnName = get_node_field_value($referencePointNode, 'field_ref_point_column_sysname', $referencePointColumnIndex);
if (isset($columnName) || ($referencePointColumnIndex === 0)) {
$referencePointColumn = $referencePoint->initiateColumn();
$referencePointColumn->datasetName = $referenceDatasetName;
$referencePoint->registerColumnInstance($referencePointColumn);
if (isset($columnName)) {
$referencePointColumn->columnName = $columnName;
}
$interlookupLookupReferencePointColumn = $lookupReferencePoint->initiateColumn();
$interlookupLookupReferencePointColumn->datasetName = $referenceDatasetName;
$interlookupLookupReferencePointColumn->columnName = $referencePointColumn->columnName;
ReferenceMetaModelLoaderHelper::adjustReferencePointColumn($loader, $metamodel, $interlookupLookupReferencePointColumn);
if (!$interlookupLookupReferencePointColumn->isShared()) {
$interlookupReferences[$referencePointColumnIndex][$referencePointIndex] = $interlookupLookupReferencePointColumn;
}
$lookupReferencePointColumn = clone $interlookupLookupReferencePointColumn;
$lookupReferencePointColumn->columnName = NULL;
$lookupReferencePoint->registerColumnInstance($lookupReferencePointColumn);
}
if (!isset($columnName)) {
break;
}
$referencePointColumnIndex++;
}
$referencePoints[$referencePointIndex] = $referencePoint;
$lookupReferencePoints[$referencePointIndex] = $lookupReferencePoint;
}
$referencePointIndex++;
}
$referencePointCount = count($referencePoints);
if ($referencePointCount == 0) {
return;
}
// checking if we need to add references between lookup reference point columns (second reference point in each reference)
if (isset($interlookupReferences)) {
// creating separate references for each reference point
foreach ($referencePoints as $referencePointIndex => $referencePoint) {
$lookupReferencePoint = $lookupReferencePoints[$referencePointIndex];
$reference = new DatasetReference();
$reference->name = get_node_field_value($referenceNode, 'field_reference_sysname', 0, 'value', TRUE) . '_rp' . $referencePointIndex;
$reference->registerPointInstance($referencePoint);
$reference->registerPointInstance($lookupReferencePoint);
$metamodel->registerReference($reference);
}
// linking lookup reference point columns
foreach ($interlookupReferences as $columnIndex => $interlookupReferencePointColumns) {
if (count($interlookupReferencePointColumns) < $referencePointCount) {
throw new UnsupportedOperationException(t('All reference point columns with the same reference point column index have to be non-shared'));
}
$interLookupReferenceName = get_node_field_value($referenceNode, 'field_reference_sysname', 0, 'value', TRUE) . '_rpci' . $columnIndex;
foreach ($interlookupReferencePointColumns as $interlookupReferencePointColumn) {
$metamodel->registerSimpleReferencePoint(
$interLookupReferenceName,
$interlookupReferencePointColumn->datasetName, $interlookupReferencePointColumn->columnName);
}
}
}
else {
// checking that all lookup reference points are the same
$masterLookupReferencePoint = NULL;
foreach ($lookupReferencePoints as $lookupReferencePoint) {
if (isset($masterLookupReferencePoint)) {
if (!$masterLookupReferencePoint->equals($lookupReferencePoint)) {
throw new UnsupportedOperationException(t('Unlinkable lookup reference points are not the same'));
}
}
else {
$masterLookupReferencePoint = $lookupReferencePoint;
}
}
// combining all reference points into one reference
$reference = new DatasetReference();
$reference->name = get_node_field_value($referenceNode, 'field_reference_sysname', 0, 'value', TRUE);
foreach ($referencePoints as $referencePointIndex => $referencePoint) {
$lookupReferencePoint = $lookupReferencePoints[$referencePointIndex];
$reference->registerPointInstance($referencePoint);
$reference->registerPointInstance($lookupReferencePoint);
}
$metamodel->registerReference($reference);
}
}
function get_node_field_boolean_value($node, $fieldName, $index = 0, $storageSuffixName = 'value', $default = FALSE) {
$value = get_node_field_int_value($node, $fieldName, $index, $storageSuffixName);
$result = $default;
if (is_array($value)) {
$vs = array();
foreach ($value as $i => $v) {
$vs[$i] = $v == 1;
}
$result = $vs;
}
elseif (isset($value)) {
$result = $value == 1;
}
return $result;
}
function get_node_field_boolean_value($node, $propertyName, $index = 0, $storageSuffixName = 'value', $default = FALSE)
{
$value = get_node_field_int_value($node, $propertyName, $index, $storageSuffixName);
return isset($value) ? $value == 1 : $default;
}