public static function prepareDataset(MetaModel $metamodel, $datasetNode, array $datasetColumnNodes = NULL, DataSourceMetaData $datasource) {
$dataset = new DatasetMetaData();
$dataset->name = get_node_field_value($datasetNode, 'field_dataset_sysname', 0, 'value', TRUE);
$dataset->publicName = $datasetNode->title;
// preparing the dataset alternative names (aliases)
$aliasIndex = 0;
while (($alias = get_node_field_value($datasetNode, 'field_dataset_alias', $aliasIndex)) != NULL) {
$dataset->aliases[] = $alias;
$aliasIndex++;
}
$dataset->description = get_node_field_value($datasetNode, 'field_dataset_desc');
$dataset->datasourceName = $datasource->name;
// preparing source configuration properties
$dataset->sourceType = get_node_field_value($datasetNode, 'field_dataset_source_type', 0, 'value', TRUE);
$dataset->source = get_node_field_value($datasetNode, 'field_dataset_source', 0, 'value', TRUE);
// preparing source properties as an associative array
$dataset->configuration = get_node_field_object_value($datasetNode, 'field_dataset_source_properties');
// dataset system properties
$dataset->uuid = get_node_field_value($datasetNode, 'field_dataset_uuid', 0, 'value', TRUE);
$dataset->nid = $datasetNode->nid;
// preparing dataset columns
if (isset($datasetColumnNodes)) {
foreach ($datasetColumnNodes as $columnNode) {
$column = $dataset->initiateColumn();
$column->used = $columnNode->status == NODE_PUBLISHED;
$column->name = get_node_field_value($columnNode, 'field_column_sysname', 0, 'value', TRUE);
$column->publicName = $columnNode->title;
$column->description = get_node_field_value($columnNode, 'field_column_desc');
$column->key = get_node_field_boolean_value($columnNode, 'field_column_key');
// column data type
$column->type->applicationType = get_node_field_value($columnNode, 'field_column_datatype', 0, 'value', $column->used);
if (isset($column->type->applicationType) && ($column->type->getReferencedDatasetName() == NULL)) {
$column->type->logicalApplicationType = NameSpaceHelper::addNameSpace(NAME_SPACE__STAR_SCHEMA, $column->type->applicationType);
}
$format = get_node_field_object_value($columnNode, 'field_column_format');
if (isset($format->scale)) {
$column->type->scale = $format->scale;
}
$column->columnIndex = get_node_field_int_value($columnNode, 'field_column_index', 0, 'value', TRUE);
$column->source = get_node_field_value($columnNode, 'field_column_source');
$column->persistence = get_node_field_int_value($columnNode, 'field_column_persistence', 0, 'value', TRUE);
// attribute system properties
$column->nid = $columnNode->nid;
$dataset->registerColumnInstance($column);
}
}
// marking that the dataset object contains complete meta data
$dataset->markAsComplete();
$metamodel->registerDataset($dataset);
return $dataset;
}