protected function selectBoundary4CubeRequest(DataControllerCallContext $callcontext, AbstractCubeQueryRequest $request, $datasetName, $columnName) {
$isSortAscending = $this->isSortAscending();
$resultColumnName = NULL;
// preparing new cube meta data
$expressionRequest = new CubeQueryRequest($request->getCubeName());
// needs to be called before any additional methods are called
$expressionRequest->addOptions($request->options);
// copying ONLY some query objects (excluding at least a reference to this operator)
// -- dimension queries
$dimensionQueries = $request->findDimensionQueries();
if (isset($dimensionQueries)) {
foreach ($dimensionQueries as $query) {
foreach ($query->columns as $queryColumn) {
foreach ($queryColumn->values as $value) {
if ($this->shouldValueBeSkipped($value)) {
continue;
}
// updating request configuration for the value supported by this class
if ($this->operatorHandler === $value) {
$resultColumnName = ParameterNameHelper::assemble($query->name, $queryColumn->name);
// returning only observing column of the dimension
$expressionRequest->addDimensionColumn(0, $query->name, $queryColumn->name);
// ... and excluding NULL values from evaluation
$expressionRequest->addDimensionColumnQueryValue(
$query->name, $queryColumn->name,
OperatorFactory::getInstance()->initiateHandler(NotEqualOperatorHandler::OPERATOR__NAME, NULL));
// sorting data
$expressionRequest->addOrderByColumn(
ColumnBasedComparator_AbstractSortingConfiguration::assembleDirectionalColumnName($resultColumnName, $isSortAscending));
}
else {
$expressionRequest->addDimensionColumnQueryValue($query->name, $queryColumn->name, $value);
}
}
}
}
}
// -- facts dataset column queries
$factsDatasetColumnQueries = $request->findFactsDatasetColumnQueries();
if (isset($factsDatasetColumnQueries)) {
foreach ($factsDatasetColumnQueries as $query) {
$values = NULL;
foreach ($query->values as $value) {
if ($this->shouldValueBeSkipped($value)) {
continue;
}
if ($this->operatorHandler === $value) {
$metamodel = data_controller_get_metamodel();
$cube = $metamodel->getCube($expressionRequest->getCubeName());
// finding dimension associated with this fact column
$selectedDimension = NULL;
if (isset($cube->dimensions)) {
foreach ($cube->dimensions as $dimension) {
if ($dimension->attributeColumnName == $query->name) {
$selectedDimension = $dimension;
break;
}
}
}
if (!isset($selectedDimension)) {
throw new IllegalArgumentException(t(
'Boundary-related operator cannot be applied to the facts dataset column: %columnName',
array('%columnName' => $query->name)));
}
$resultColumnName = ParameterNameHelper::assemble($selectedDimension->name);
// returning only observing column from facts dataset
$expressionRequest->addDimension(0, $selectedDimension->name);
// ... and excluding NULL values from evaluation
$expressionRequest->addFactsDatasetColumnQueryValue(
$query->name,
OperatorFactory::getInstance()->initiateHandler(NotEqualOperatorHandler::OPERATOR__NAME, NULL));
// sorting data
$expressionRequest->addOrderByColumn(
ColumnBasedComparator_AbstractSortingConfiguration::assembleDirectionalColumnName($resultColumnName, $isSortAscending));
}
else {
$values[] = $value;
}
}
if (isset($values)) {
$expressionRequest->addFactsDatasetColumnQueryValues($query->name, $values);
}
}
}
// -- measure queries
$measureQueries = $request->findMeasureQueries();
if (isset($measureQueries)) {
foreach ($measureQueries as $query) {
foreach ($query->values as $value) {
if ($this->shouldValueBeSkipped($value)) {
throw new IllegalArgumentException(t('Boundary-related operator cannot be applied to measures'));
}
}
$expressionRequest->queries[] = clone $query;
}
}
// limiting response to one record
$expressionRequest->setPagination(1, 0);
return $this->processCubeExpressionRequest($callcontext, $expressionRequest, $resultColumnName);
}