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); } }