Examples with DimensionInfo org.apache.carbondata.core.scan.executor.infos.DimensionInfo used on opensource projects

Example 1 with DimensionInfo

use of org.apache.carbondata.core.scan.executor.infos.DimensionInfo in project carbondata by apache.

the class RestructureUtil method createDimensionInfoAndGetCurrentBlockQueryDimension.

/**
   * Below method will be used to get the updated query dimension updation
   * means, after restructuring some dimension will be not present in older
   * table blocks in that case we need to select only those dimension out of
   * query dimension which is present in the current table block
   *
   * @param blockExecutionInfo
   * @param queryDimensions
   * @param tableBlockDimensions
   * @param tableComplexDimension
   * @return list of query dimension which is present in the table block
   */
public static List<QueryDimension> createDimensionInfoAndGetCurrentBlockQueryDimension(BlockExecutionInfo blockExecutionInfo, List<QueryDimension> queryDimensions, List<CarbonDimension> tableBlockDimensions, List<CarbonDimension> tableComplexDimension) {
    List<QueryDimension> presentDimension = new ArrayList<QueryDimension>(CarbonCommonConstants.DEFAULT_COLLECTION_SIZE);
    boolean[] isDimensionExists = new boolean[queryDimensions.size()];
    Object[] defaultValues = new Object[queryDimensions.size()];
    // create dimension information instance
    DimensionInfo dimensionInfo = new DimensionInfo(isDimensionExists, defaultValues);
    int newDictionaryColumnCount = 0;
    int newNoDictionaryColumnCount = 0;
    // selecting only those dimension which is present in the query
    int dimIndex = 0;
    for (QueryDimension queryDimension : queryDimensions) {
        if (queryDimension.getDimension().hasEncoding(Encoding.IMPLICIT)) {
            presentDimension.add(queryDimension);
            isDimensionExists[dimIndex] = true;
        } else {
            for (CarbonDimension tableDimension : tableBlockDimensions) {
                if (tableDimension.getColumnId().equals(queryDimension.getDimension().getColumnId())) {
                    QueryDimension currentBlockDimension = new QueryDimension(tableDimension.getColName());
                    tableDimension.getColumnSchema().setDataType(queryDimension.getDimension().getDataType());
                    tableDimension.getColumnSchema().setPrecision(queryDimension.getDimension().getColumnSchema().getPrecision());
                    tableDimension.getColumnSchema().setScale(queryDimension.getDimension().getColumnSchema().getScale());
                    tableDimension.getColumnSchema().setDefaultValue(queryDimension.getDimension().getDefaultValue());
                    currentBlockDimension.setDimension(tableDimension);
                    currentBlockDimension.setQueryOrder(queryDimension.getQueryOrder());
                    presentDimension.add(currentBlockDimension);
                    isDimensionExists[dimIndex] = true;
                    break;
                }
            }
            // if dimension is found then no need to search in the complex dimensions list
            if (isDimensionExists[dimIndex]) {
                dimIndex++;
                continue;
            }
            for (CarbonDimension tableDimension : tableComplexDimension) {
                if (tableDimension.getColumnId().equals(queryDimension.getDimension().getColumnId())) {
                    QueryDimension currentBlockDimension = new QueryDimension(tableDimension.getColName());
                    // TODO: for complex dimension set scale and precision by traversing
                    // the child dimensions
                    currentBlockDimension.setDimension(tableDimension);
                    currentBlockDimension.setQueryOrder(queryDimension.getQueryOrder());
                    presentDimension.add(currentBlockDimension);
                    isDimensionExists[dimIndex] = true;
                    break;
                }
            }
            // add default value only in case query dimension is not found in the current block
            if (!isDimensionExists[dimIndex]) {
                defaultValues[dimIndex] = validateAndGetDefaultValue(queryDimension.getDimension());
                blockExecutionInfo.setRestructuredBlock(true);
                // newly added columns data need to be filled
                if (queryDimension.getDimension().hasEncoding(Encoding.DICTIONARY)) {
                    dimensionInfo.setDictionaryColumnAdded(true);
                    newDictionaryColumnCount++;
                } else {
                    dimensionInfo.setNoDictionaryColumnAdded(true);
                    newNoDictionaryColumnCount++;
                }
            }
        }
        dimIndex++;
    }
    dimensionInfo.setNewDictionaryColumnCount(newDictionaryColumnCount);
    dimensionInfo.setNewNoDictionaryColumnCount(newNoDictionaryColumnCount);
    blockExecutionInfo.setDimensionInfo(dimensionInfo);
    return presentDimension;
}