public function queryCube(DataControllerCallContext $callcontext, CubeQueryRequest $request, ResultFormatter $resultFormatter)
{
$cubeName = $request->getCubeName();
LogHelper::log_notice(t('Querying SQL-based cube: @cubeName', array('@cubeName' => $cubeName)));
$environment_metamodel = data_controller_get_environment_metamodel();
$metamodel = data_controller_get_metamodel();
$callcontext->columnMapping = NULL;
$cube = $metamodel->getCube($cubeName);
LogHelper::log_debug($cube);
$cubeDatasetName = $cube->sourceDatasetName;
$cubeDataset = $metamodel->getDataset($cubeDatasetName);
$datasource = $environment_metamodel->getDataSource($cubeDataset->datasourceName);
// aliases for tables
$TABLE_ALIAS__JOIN = 'j';
$tableJoinIndex = 0;
// preparing statement which aggregates data
$aggrStatement = $this->prepareCubeQueryStatement($callcontext, $request);
list($isSubqueryRequired, $assembledAggregationSections) = $aggrStatement->prepareSections(NULL);
// assembling porting of SQL which is responsible for aggregation
if (isset($request->referencedRequests)) {
$joinStatement = $aggrStatement;
// changing alias of first table. This new alias is expected the following code to join with lookup tables
$joinStatement->updateTableAlias($joinStatement->tables[0]->alias, $TABLE_ALIAS__JOIN);
} else {
$joinStatement = new Statement();
$aggregationTableSection = new SubquerySection(Statement::assemble($isSubqueryRequired, NULL, $assembledAggregationSections, Statement::$INDENT_SUBQUERY, FALSE), $TABLE_ALIAS__JOIN);
$joinStatement->tables[] = $aggregationTableSection;
}
// adding support for dimension level properties
if (isset($request->dimensions)) {
foreach ($request->dimensions as $requestDimension) {
$dimensionName = $requestDimension->dimensionName;
$dimension = $cube->getDimension($dimensionName);
$levelName = $requestDimension->levelName;
// we do not need to map the column. It was done in prepareCubeQueryStatement()
$levelDatabaseColumnName = ParameterHelper::assembleDatabaseColumnName($this->getMaximumEntityNameLength(), $dimensionName, $levelName);
// adding support for level root column
$levelRootColumn = new ColumnSection($levelDatabaseColumnName);
$levelRootColumn->requestColumnIndex = $requestDimension->requestColumnIndex;
$levelRootColumn->visible = isset($requestDimension->requestColumnIndex);
$aggregationTableSection->columns[] = $levelRootColumn;
if (!isset($requestDimension->properties)) {
continue;
}
$tableJoinIndex++;
$levelTableAlias = $TABLE_ALIAS__JOIN . $tableJoinIndex;
$level = $dimension->getLevel($levelName);
$levelDataset = $metamodel->getDataset($level->datasetName);
// preparing list of columns which are accessed by this dataset
$usedColumnNames = NULL;
$levelColumnAliasMapping = NULL;
foreach ($requestDimension->properties as $property) {
$propertyName = $property->name;
$responseColumnName = ParameterHelper::assembleParameterName($dimensionName, $levelName, $propertyName);
$databaseColumnName = ParameterHelper::assembleDatabaseColumnName($this->getMaximumEntityNameLength(), $dimensionName, $levelName, $propertyName);
$callcontext->columnMapping[$databaseColumnName] = $responseColumnName;
ArrayHelper::addUniqueValue($usedColumnNames, $propertyName);
$levelColumnAliasMapping[$propertyName] = $databaseColumnName;
}
$isLevelKeyColumnAdded = ArrayHelper::addUniqueValue($usedColumnNames, $level->key);
$levelStatement = $this->prepareDatasetSourceStatement($callcontext, $levelDataset, $usedColumnNames);
// updating level statement table aliases
$levelStatement->addTableAliasPrefix($levelTableAlias);
foreach ($levelStatement->tables as $table) {
if (!isset($table->columns)) {
$table->columns = array();
// We do not need any columns
}
}
// updating level statement column aliases
foreach ($requestDimension->properties as $property) {
$oldColumnAlias = $property->name;
$newColumnAlias = $levelColumnAliasMapping[$oldColumnAlias];
$levelTableSection = $levelStatement->getColumnTable($oldColumnAlias, TRUE);
$levelColumnSection = $levelTableSection->findColumnByAlias($oldColumnAlias);
if (isset($levelColumnSection)) {
$levelColumnSection->alias = $newColumnAlias;
} else {
$levelColumnSection = new ColumnSection($oldColumnAlias, $newColumnAlias);
$levelTableSection->columns[] = $levelColumnSection;
}
$levelColumnSection->requestColumnIndex = $property->requestColumnIndex;
}
// adding condition to join with 'main' statement
$levelKeyTableSection = $levelStatement->getColumnTable($level->key);
$levelKeyTableSection->conditions[] = new JoinConditionSection($level->key, new TableColumnConditionSectionValue($TABLE_ALIAS__JOIN, $levelDatabaseColumnName));
// merging with 'main' statement
$joinStatement->merge($levelStatement);
// we do not need to return level key column
if ($isLevelKeyColumnAdded && isset($levelKeyTableSection)) {
// FIXME this code does not work in the following case:
// - our lookup dataset is fact dataset
// - we need to work with project_id column from that dataset
// - the column is present in *_facts and contains numeric value
// - the column is present in *_c_project_id table and contains numeric value
// - column 'value' in *_c_project_id table assigned an alias project_id
// - more about implementation is in ReferenceDimensionDatasetAssembler
// - the code is partially fixed by using $visibleOnly parameter
$tableSection = $levelStatement->getColumnTable($level->key, TRUE);
$keyColumn = $tableSection->findColumnByAlias($level->key);
if (isset($keyColumn)) {
$keyColumn->visible = FALSE;
}
}
}
}
$isJoinUsed = $tableJoinIndex > 0;
if ($isJoinUsed) {
// adding measures
if (isset($request->measures)) {
foreach ($request->measures as $requestMeasure) {
$measureName = $requestMeasure->measureName;
// we do not need to map the column. It was done in prepareCubeQueryStatement()
$databaseColumnName = ParameterHelper::assembleDatabaseColumnName($this->getMaximumEntityNameLength(), $measureName);
$measureSection = new ColumnSection($databaseColumnName);
$measureSection->requestColumnIndex = $requestMeasure->requestColumnIndex;
$aggregationTableSection->columns[] = $measureSection;
}
}
list($isSubqueryRequired, $assembledJoinSections) = $joinStatement->prepareSections(NULL);
$sql = Statement::assemble($isSubqueryRequired, NULL, $assembledJoinSections);
} else {
$sql = Statement::assemble($isSubqueryRequired, NULL, $assembledAggregationSections);
}
// applying ordering
$sql = $this->applyOrderBy($sql, $request);
// applying pagination
$this->applyPagination($request, $sql);
// processing prepared sql and returning data
LogHelper::log_info(new StatementLogMessage('cube.query', $sql));
return $this->executeQuery($callcontext, $datasource, $sql, $resultFormatter);
}
public function assemble(AbstractSQLDataSourceQueryHandler $datasourceHandler, AbstractQueryRequest $request, DatasetMetaData $dataset, array $columnNames = NULL) {
$statement = new Statement();
$TABLE_ALIAS__FACTS = 'dsf';
$TABLE_ALIAS__COLUMN_JOIN = 'cj';
$metamodel = data_controller_get_metamodel();
$cubeName = $dataset->name;
$cube = $metamodel->getCube($cubeName);
$factsDataset = $metamodel->getDataset($cube->factsDatasetName);
self::$TABLE_ALIAS_SUFFIX__SEQUENCE++;
$factsTable = new DatasetSection($factsDataset, $TABLE_ALIAS__FACTS . self::$TABLE_ALIAS_SUFFIX__SEQUENCE);
$statement->tables[] = $factsTable;
foreach ($dataset->getColumns() as $column) {
$columnName = $column->name;
$columnDefaultAlias = NULL;
if (isset($columnNames)) {
$columnDefaultAlias = array_search($columnName, $columnNames);
if ($columnDefaultAlias === FALSE) {
continue;
}
// fixing the alias if the list of columns is not associative array
if (is_int($columnDefaultAlias)) {
$columnDefaultAlias = NULL;
}
}
// FIXME the following code does not work in the following situation:
// 1) we need to query a dataset which is defined in GovDashboard using file upload
// 2) column names are not provided
// 3) for columns which are references to lookup, value from the primary key from lookup table is returned
// even if in definition of the dataset we have columns with the following application type: name@lookup, code @lookup and etc
$isReferenceUsed = FALSE;
$handler = DimensionLookupFactory::getInstance()->findHandler($column->type->getLogicalApplicationType());
if (isset($handler)) {
// FIXME remove this implementation when we implement 'Executable Tree' functionality
list($connectedDatasetName, $connectedColumnName) = $handler->adjustReferencePointColumn($metamodel, $factsDataset->name, $columnName);
if (($connectedDatasetName != $factsDataset->name) || ($connectedColumnName != $columnName)) {
self::$TABLE_ALIAS_SUFFIX__SEQUENCE++;
$columnJoinAliasPrefix = $TABLE_ALIAS__COLUMN_JOIN . self::$TABLE_ALIAS_SUFFIX__SEQUENCE;
$connectedDataset = $metamodel->getDataset($connectedDatasetName);
$connectedDatasetKeyColumnName = $connectedDataset->getKeyColumn()->name;
// preparing list of columns we want to get from connected dataset
$connectedDatasetColumnNames = NULL;
ArrayHelper::addUniqueValue($connectedDatasetColumnNames, $connectedDatasetKeyColumnName);
ArrayHelper::addUniqueValue($connectedDatasetColumnNames, $connectedColumnName);
$connectedStatement = $datasourceHandler->assembleDatasetSourceStatement($request, $connectedDataset, $connectedDatasetColumnNames);
$connectedStatement->addTableAliasPrefix($columnJoinAliasPrefix);
$connectedTable = $connectedStatement->getColumnTable($connectedColumnName);
// registering the column for facts table
$factsTableColumn = new ColumnSection($columnName, 'fact_' . $columnName);
$factsTableColumn->visible = FALSE;
$factsTable->columns[] = $factsTableColumn;
// adjusting key column from lookup
$connectedDatasetKeyColumn = $connectedTable->getColumn($connectedDatasetKeyColumnName);
$connectedDatasetKeyColumn->alias = 'lookup_' . $connectedDatasetKeyColumnName;
$connectedDatasetKeyColumn->visible = FALSE;
// adjusting value column from lookup
$connectedDatasetValueColumn = $connectedTable->getColumn($connectedColumnName);
$connectedDatasetValueColumn->alias = $columnName;
// the key column could be the same as value column
$connectedDatasetValueColumn->visible = TRUE;
// new value column which uses composite name as column alias
if (isset($columnDefaultAlias)) {
$connectedDatasetValueColumn2 = new ColumnSection(
$connectedColumnName,
DataSourceColumnNameHelper::generateFromParameterElements($datasourceHandler->getMaximumEntityNameLength(), $columnDefaultAlias));
$connectedDatasetValueColumn2->visible = FALSE;
$connectedTable->columns[] = $connectedDatasetValueColumn2;
}
// linking the lookup table with the facts table
$connectedTable->conditions[] = new JoinConditionSection(
$connectedDatasetKeyColumn->alias, new TableColumnConditionSectionValue($factsTable->alias, $columnName));
$statement->merge($connectedStatement);
$isReferenceUsed = TRUE;
}
}
if (!$isReferenceUsed) {
$factsTable->columns[] = new ColumnSection($columnName);
}
}
return $statement;
}
public function queryCube(DataControllerCallContext $callcontext, CubeQueryRequest $request) {
$cubeName = $request->getCubeName();
LogHelper::log_info(t('Querying SQL-based cube: @cubeName', array('@cubeName' => $cubeName)));
$environment_metamodel = data_controller_get_environment_metamodel();
$metamodel = data_controller_get_metamodel();
$this->getExtension('adjustRequest')->adjustCubeQueryRequest($this, $request);
$callcontext->columnMapping = NULL;
$cube = $metamodel->getCube($cubeName);
$factsDataset = $metamodel->getDataset($cube->factsDatasetName);
$datasource = $environment_metamodel->getDataSource($factsDataset->datasourceName);
$engine = QueryEngineFactory::getInstance()->getHandler();
$generationContext = $engine->prepareStatementGenerationContext($request, $cube);
// aliases for tables
$TABLE_ALIAS__JOIN = 'j';
$tableJoinIndex = 0;
// preparing statement which aggregates data
$aggrStatement = $this->prepareCubeQueryStatement($callcontext, $request);
list($isSubqueryRequired, $assembledAggregationSections) = $aggrStatement->prepareSections(NULL);
// assembling portion of SQL which is responsible for aggregation
if (isset($request->referencedRequests)) {
$joinStatement = $aggrStatement;
// changing alias of first table. This new alias is expected the following code to join with lookup tables
$joinStatement->updateTableAlias($joinStatement->tables[0]->alias, $TABLE_ALIAS__JOIN);
}
else {
$joinStatement = new Statement();
$aggregationTableSection = new SubquerySection(
Statement::assemble($isSubqueryRequired, NULL, $assembledAggregationSections, SelectStatementPrint::INDENT__SUBQUERY, FALSE),
$TABLE_ALIAS__JOIN);
$joinStatement->tables[] = $aggregationTableSection;
}
// adding support for dimension columns
if (isset($request->dimensions)) {
foreach ($request->dimensions as $requestDimension) {
$dimensionName = $requestDimension->name;
$dimension = $cube->findDimension($dimensionName);
// we do not need to map the column. It was done in prepareCubeQueryStatement()
$dimensionDatabaseColumnName = DataSourceColumnNameHelper::generateFromParameterElements($this->getMaximumEntityNameLength(), $dimensionName);
// adding support for dimension column
$dimensionColumn = new ColumnSection($dimensionDatabaseColumnName);
$dimensionColumn->requestColumnIndex = $requestDimension->requestColumnIndex;
$dimensionColumn->visible = isset($requestDimension->requestColumnIndex);
$aggregationTableSection->columns[] = $dimensionColumn;
if (!isset($requestDimension->columns)) {
continue;
}
// preparing list of columns which are accessed by this dataset
$usedColumnNames = NULL;
$dimensionColumnAliasMapping = NULL;
foreach ($requestDimension->columns as $requestColumn) {
$responseColumnName = ParameterNameHelper::assemble($dimensionName, $requestColumn->name);
$databaseColumnName = DataSourceColumnNameHelper::generateFromParameterElements(
$this->getMaximumEntityNameLength(), $dimensionName, $requestColumn->name);
$callcontext->columnMapping[$databaseColumnName] = $responseColumnName;
ArrayHelper::addUniqueValue($usedColumnNames, $requestColumn->name);
$dimensionColumnAliasMapping[$requestColumn->name] = $databaseColumnName;
}
$isJoinWithDimensionDatasetRequired = $generationContext->dimensionJoinPhase[__DefaultQueryEngine_StatementGenerationContext::DIMENSION_JOIN_PHASE__GROUPING_WITH_LOOKUP_AFTER][$dimensionName];
if ($isJoinWithDimensionDatasetRequired) {
$tableJoinIndex++;
$dimensionTableAlias = $TABLE_ALIAS__JOIN . $tableJoinIndex;
$dimensionDataset = $metamodel->getDataset($dimension->datasetName);
$isDimensionKeyColumnAdded = ArrayHelper::addUniqueValue($usedColumnNames, $dimension->key);
$dimensionStatement = $this->prepareDatasetSourceStatement($callcontext, $request, $dimensionDataset, $usedColumnNames);
// updating dimension statement table aliases
$dimensionStatement->addTableAliasPrefix($dimensionTableAlias);
foreach ($dimensionStatement->tables as $table) {
if (!isset($table->columns)) {
$table->columns = array(); // We do not need any columns
}
}
// updating dimension statement column aliases
foreach ($requestDimension->columns as $requestColumn) {
$oldColumnAlias = $requestColumn->name;
$newColumnAlias = $dimensionColumnAliasMapping[$oldColumnAlias];
$dimensionTableSection = $dimensionStatement->getColumnTable($oldColumnAlias, TRUE);
$dimensionColumnSection = $dimensionTableSection->findColumnByAlias($oldColumnAlias);
if (isset($dimensionColumnSection)) {
$dimensionColumnSection->alias = $newColumnAlias;
}
else {
$dimensionColumnSection = new ColumnSection($oldColumnAlias, $newColumnAlias);
$dimensionTableSection->columns[] = $dimensionColumnSection;
}
$dimensionColumnSection->requestColumnIndex = $requestColumn->requestColumnIndex;
}
// adding condition to join with 'main' statement
$dimensionKeyTableSection = $dimensionStatement->getColumnTable($dimension->key);
$dimensionKeyTableSection->conditions[] = new JoinConditionSection(
$dimension->key, new TableColumnConditionSectionValue($TABLE_ALIAS__JOIN, $dimensionDatabaseColumnName));
// merging with 'main' statement
$joinStatement->merge($dimensionStatement);
// we do not need to return dimension key column
if ($isDimensionKeyColumnAdded && isset($dimensionKeyTableSection)) {
// FIXME this code does not work in the following case:
// - our lookup dataset is fact dataset
// - we need to work with project_id column from that dataset
// - the column is present in *_facts and contains numeric value
// - the column is present in *_c_project_id table and contains numeric value
// - column 'value' in *_c_project_id table assigned an alias project_id
// - more about implementation is in ReferenceDimensionDatasetAssembler
// - the code is partially fixed by using $visibleOnly parameter
$tableSection = $dimensionStatement->getColumnTable($dimension->key, TRUE);
$keyColumn = $tableSection->findColumnByAlias($dimension->key);
if (isset($keyColumn)) {
$keyColumn->visible = FALSE;
}
}
}
else {
foreach ($requestDimension->columns as $requestColumn) {
$oldColumnAlias = $requestColumn->name;
$newColumnAlias = $dimensionColumnAliasMapping[$oldColumnAlias];
$column = new ColumnSection($newColumnAlias);
$column->requestColumnIndex = $requestColumn->requestColumnIndex;
$aggregationTableSection->columns[] = $column;
}
}
}
}
$isJoinUsed = $tableJoinIndex > 0;
if ($isJoinUsed) {
// adding measures
if (isset($request->measures)) {
foreach ($request->measures as $requestMeasure) {
$measureName = $requestMeasure->name;
// we do not need to map the column. It was done in prepareCubeQueryStatement()
$databaseColumnName = DataSourceColumnNameHelper::generateFromParameterElements(
$this->getMaximumEntityNameLength(), $measureName);
$measureSection = new ColumnSection($databaseColumnName);
$measureSection->requestColumnIndex = $requestMeasure->requestColumnIndex;
$aggregationTableSection->columns[] = $measureSection;
}
}
list($isSubqueryRequired, $assembledJoinSections) = $joinStatement->prepareSections(NULL);
$sql = Statement::assemble($isSubqueryRequired, NULL, $assembledJoinSections);
}
else {
$sql = Statement::assemble($isSubqueryRequired, NULL, $assembledAggregationSections);
}
// applying sorting
if (isset($request->sortingConfigurations)) {
$adjustedColumns = NULL;
foreach ($request->sortingConfigurations as $sortingConfiguration) {
// TODO try to use the same functionality for list and cube requests
$adjustedColumn = DataSourceColumnNameHelper::generateFromParameterElements(
$this->getMaximumEntityNameLength(),
$sortingConfiguration->rootName, $sortingConfiguration->leafName);
// adjusting direction of the sorting
if (!$sortingConfiguration->isSortAscending) {
$adjustedColumn = $adjustedColumn . ' DESC';
}
$adjustedColumns[] = $adjustedColumn;
}
if (count($adjustedColumns) > 0) {
$sql .= "\n ORDER BY " . implode(', ', $adjustedColumns);
}
}
// applying pagination
$this->applyPagination($request, $sql);
// processing prepared sql and returning data
LogHelper::log_info(new StatementLogMessage('cube.query', $sql));
return $this->executeQuery($callcontext, $datasource, $sql);
}
protected function prepareReferencedCubeQueryStatement(
AbstractSQLDataSourceQueryHandler $datasourceHandler, DataControllerCallContext $callcontext,
Statement $combinedStatement, array $datasetMappedCubeRequests, ReferenceLink $link) {
if (!isset($link->nestedLinks)) {
return;
}
$metamodel = data_controller_get_metamodel();
foreach ($link->nestedLinks as $referencedLink) {
$referencedRequest = NULL;
if (isset($datasetMappedCubeRequests[$referencedLink->dataset->name])) {
$referencedRequest = clone $datasetMappedCubeRequests[$referencedLink->dataset->name];
}
else {
// checking if there is corresponding cube for the referenced dataset
$possibleReferencedCube = $metamodel->findCubeByDatasetName($referencedLink->dataset->name);
if (isset($possibleReferencedCube)) {
$referencedRequest = new CubeQueryRequest($possibleReferencedCube->name);
$referencedRequest->referenced = TRUE;
$datasetMappedCubeRequests[$possibleReferencedCube->factsDatasetName] = $referencedRequest;
}
}
if (isset($referencedRequest)) {
// preparing parent cube
$parentRequest = $datasetMappedCubeRequests[$link->dataset->name];
$parentCubeName = $parentRequest->getCubeName();
$parentCube = $metamodel->getCube($parentCubeName);
// preparing referenced cube
$referencedCubeName = $referencedRequest->getCubeName();
$referencedCube = $metamodel->getCube($referencedCubeName);
// adding required dimensions
$joinConditions = NULL;
foreach ($referencedLink->parentColumnNames as $columnIndex => $parentColumnName) {
// looking for a dimension in parent cube
$parentDimension = $parentCube->getDimensionByAttributeColumnName($parentColumnName);
// looking for a dimension in referenced cube
$referencedColumnName = $referencedLink->columnNames[$columnIndex];
$referencedDimension = $referencedCube->getDimensionByAttributeColumnName($referencedColumnName);
// checking if this dimension is part of query portion of parent request
$parentRequestDimensionQuery = $parentRequest->findDimensionQuery($parentDimension->name);
if (isset($parentRequestDimensionQuery)) {
// copying the query request to referenced cube
$referencedRequestDimensionQuery = new __AbstractCubeQueryRequest_DimensionQuery($referencedDimension->name);
$referencedRequestDimensionQuery->columns = $parentRequestDimensionQuery->columns;
$referencedRequest->importDimensionQueryFrom($referencedRequestDimensionQuery);
}
// checking if there is a related query for parent column name
$parentRequestFactsDatasetColumnQuery = $parentRequest->findFactsDatasetColumnQuery($parentColumnName);
if (isset($parentRequestFactsDatasetColumnQuery)) {
// copying the query request to referenced cube
$referencedRequest->addFactsDatasetColumnQueryValues($referencedColumnName, $parentRequestFactsDatasetColumnQuery->values);
}
// checking if this dimension is part of parent request
$parentRequestDimension = $parentRequest->findDimension($parentDimension->name);
if (!isset($parentRequestDimension)) {
// because this dimension is not in list of returned columns we should not use it to link with referenced cube
continue;
}
$referencedRequestDimension = $referencedRequest->addDimension(
NULL, // TODO support requestColumnIndex here
$referencedDimension->name);
$columnNames = $parentRequestDimension->getColumnNames();
if (isset($columnNames)) {
foreach ($columnNames as $columnName) {
$referencedRequestDimension->registerColumnName(
NULL, // TODO support requestColumnIndex here
$columnName);
}
}
else {
// to help the following loop to link cubes by dimension
$columnNames = array(NULL);
}
foreach ($columnNames as $columnName) {
$parentDatabaseColumnName = DataSourceColumnNameHelper::generateFromParameterElements(
$datasourceHandler->getMaximumEntityNameLength(),
($parentRequest->referenced ? ReferencePathHelper::assembleReference($parentCube->factsDatasetName, $parentDimension->name) : $parentDimension->name),
$columnName);
$referencedDatabaseColumnName = DataSourceColumnNameHelper::generateFromParameterElements(
$datasourceHandler->getMaximumEntityNameLength(),
ReferencePathHelper::assembleReference($referencedCube->factsDatasetName, $referencedDimension->name),
$columnName);
$joinConditions[] = new JoinConditionSection(
$referencedDatabaseColumnName, new TableColumnConditionSectionValue(self::$TABLE_ALIAS__REFERENCED . $link->linkId, $parentDatabaseColumnName));
}
}
if (!isset($joinConditions)) {
throw new IllegalArgumentException(t(
'There is no common columns to join %datasetNameA and %datasetNameB datasets',
array('%datasetNameA' => $parentCube->publicName, '%datasetNameB' => $referencedCube->publicName)));
}
// preparing aggregation statement for referenced cube
$referencedAggregationStatement = $this->prepareSelectedCubeQueryStatement($datasourceHandler, $callcontext, $referencedRequest);
list($isSubqueryRequired, $assembledReferencedCubeSections) = $referencedAggregationStatement->prepareSections(NULL);
$referencedCubeSubquerySection = new SubquerySection(
Statement::assemble($isSubqueryRequired, NULL, $assembledReferencedCubeSections, SelectStatementPrint::INDENT__LEFT_OUTER_JOIN__SUBQUERY, FALSE),
self::$TABLE_ALIAS__REFERENCED . $referencedLink->linkId);
// preparing columns which are returned by referenced aggregation
foreach ($referencedAggregationStatement->tables as $table) {
if (!isset($table->columns)) {
continue;
}
foreach ($table->columns as $column) {
if (!$column->visible) {
continue;
}
$referencedCubeSubquerySection->columns[] = new ColumnSection($column->alias);
}
}
// linking with parent cube
foreach ($joinConditions as $joinCondition) {
// we do not need to return columns which are used to join with parent cube
$referencedCubeSubquerySection->getColumn($joinCondition->subjectColumnName)->visible = FALSE;
$referencedCubeSubquerySection->conditions[] = $joinCondition;
}
// adding to resulting statement
$combinedStatement->tables[] = $referencedCubeSubquerySection;
// applying referenced cubes measure conditions on resulting statement as well
$measureQueries = $referencedRequest->findMeasureQueries();
if (isset($measureQueries)) {
foreach ($measureQueries as $measureQuery) {
$measureName = ReferencePathHelper::assembleReference($referencedCube->factsDatasetName, $measureQuery->name);
$measureDatabaseColumnName = DataSourceColumnNameHelper::generateFromParameterElements(
$datasourceHandler->getMaximumEntityNameLength(), $measureName);
foreach ($measureQuery->values as $value) {
$combinedStatement->conditions[] = new WhereConditionSection(
self::$TABLE_ALIAS__REFERENCED . $referencedLink->linkId,
$measureDatabaseColumnName,
new ExactConditionSectionValue(
$datasourceHandler->formatOperatorValue($callcontext, $referencedRequest, $referencedCube->factsDatasetName, NULL, $value)));
}
}
}
}
else {
throw new UnsupportedOperationException(t('Cube joins using intermediate dataset is not supported yet'));
// preparing statement for intermediate dataset
$requiredColumnNames = $referencedLink->columnNames;
$referencedIntermediateDatasetStatement = $datasourceHandler->prepareDatasetSourceStatement($callcontext, NULL, $referencedLink->dataset, $requiredColumnNames);
// adding condition to join with parent statement
$referencedIntermediateDatasetTableSection = $referencedIntermediateDatasetStatement->tables[0];
foreach ($referencedLink->columnNames as $columnIndex => $referencedColumnName) {
$referencedDatabaseColumnName = $referencedColumnName;
$parentColumnName = $referencedLink->parentColumnNames[$columnIndex];
$parentDatabaseColumnName = $parentColumnName;
$referencedIntermediateDatasetTableSection->conditions[] = new JoinConditionSection(
$referencedDatabaseColumnName, new TableColumnConditionSectionValue(self::$TABLE_ALIAS__REFERENCED . $link->linkId, $parentDatabaseColumnName));
}
$combinedStatement->merge($referencedIntermediateDatasetStatement);
}
// recursively check nested levels
$this->prepareReferencedCubeQueryStatement($datasourceHandler, $callcontext, $combinedStatement, $datasetMappedCubeRequests, $referencedLink);
}
}
