Examples with DictionaryColumnUniqueIdentifier org.apache.carbondata.core.cache.dictionary.DictionaryColumnUniqueIdentifier used on opensource projects

Example 6 with DictionaryColumnUniqueIdentifier

use of org.apache.carbondata.core.cache.dictionary.DictionaryColumnUniqueIdentifier in project carbondata by apache.

the class DictionaryDecodeReadSupport method initialize.

/**
   * This initialization is done inside executor task
   * for column dictionary involved in decoding.
   *
   * @param carbonColumns column list
   * @param absoluteTableIdentifier table identifier
   */
@Override
public void initialize(CarbonColumn[] carbonColumns, AbsoluteTableIdentifier absoluteTableIdentifier) throws IOException {
    this.carbonColumns = carbonColumns;
    dictionaries = new Dictionary[carbonColumns.length];
    dataTypes = new DataType[carbonColumns.length];
    for (int i = 0; i < carbonColumns.length; i++) {
        if (carbonColumns[i].hasEncoding(Encoding.DICTIONARY) && !carbonColumns[i].hasEncoding(Encoding.DIRECT_DICTIONARY) && !carbonColumns[i].isComplex()) {
            CacheProvider cacheProvider = CacheProvider.getInstance();
            Cache<DictionaryColumnUniqueIdentifier, Dictionary> forwardDictionaryCache = cacheProvider.createCache(CacheType.FORWARD_DICTIONARY, absoluteTableIdentifier.getStorePath());
            dataTypes[i] = carbonColumns[i].getDataType();
            dictionaries[i] = forwardDictionaryCache.get(new DictionaryColumnUniqueIdentifier(absoluteTableIdentifier.getCarbonTableIdentifier(), carbonColumns[i].getColumnIdentifier(), dataTypes[i]));
        } else {
            dataTypes[i] = carbonColumns[i].getDataType();
        }
    }
}

Example 7 with DictionaryColumnUniqueIdentifier

use of org.apache.carbondata.core.cache.dictionary.DictionaryColumnUniqueIdentifier in project carbondata by apache.

the class StoreCreator method writeDictionary.

private static void writeDictionary(String factFilePath, CarbonTable table) throws Exception {
    BufferedReader reader = new BufferedReader(new FileReader(factFilePath));
    String header = reader.readLine();
    String[] split = header.split(",");
    List<CarbonColumn> allCols = new ArrayList<CarbonColumn>();
    List<CarbonDimension> dims = table.getDimensionByTableName(table.getFactTableName());
    allCols.addAll(dims);
    List<CarbonMeasure> msrs = table.getMeasureByTableName(table.getFactTableName());
    allCols.addAll(msrs);
    Set<String>[] set = new HashSet[dims.size()];
    for (int i = 0; i < set.length; i++) {
        set[i] = new HashSet<String>();
    }
    String line = reader.readLine();
    while (line != null) {
        String[] data = line.split(",");
        for (int i = 0; i < set.length; i++) {
            set[i].add(data[i]);
        }
        line = reader.readLine();
    }
    Cache dictCache = CacheProvider.getInstance().createCache(CacheType.REVERSE_DICTIONARY, absoluteTableIdentifier.getStorePath());
    for (int i = 0; i < set.length; i++) {
        ColumnIdentifier columnIdentifier = new ColumnIdentifier(dims.get(i).getColumnId(), null, null);
        CarbonDictionaryWriter writer = new CarbonDictionaryWriterImpl(absoluteTableIdentifier.getStorePath(), absoluteTableIdentifier.getCarbonTableIdentifier(), columnIdentifier);
        for (String value : set[i]) {
            writer.write(value);
        }
        writer.close();
        writer.commit();
        Dictionary dict = (Dictionary) dictCache.get(new DictionaryColumnUniqueIdentifier(absoluteTableIdentifier.getCarbonTableIdentifier(), columnIdentifier, dims.get(i).getDataType()));
        CarbonDictionarySortInfoPreparator preparator = new CarbonDictionarySortInfoPreparator();
        List<String> newDistinctValues = new ArrayList<String>();
        CarbonDictionarySortInfo dictionarySortInfo = preparator.getDictionarySortInfo(newDistinctValues, dict, dims.get(i).getDataType());
        CarbonDictionarySortIndexWriter carbonDictionaryWriter = new CarbonDictionarySortIndexWriterImpl(absoluteTableIdentifier.getCarbonTableIdentifier(), columnIdentifier, absoluteTableIdentifier.getStorePath());
        try {
            carbonDictionaryWriter.writeSortIndex(dictionarySortInfo.getSortIndex());
            carbonDictionaryWriter.writeInvertedSortIndex(dictionarySortInfo.getSortIndexInverted());
        } finally {
            carbonDictionaryWriter.close();
        }
    }
    reader.close();
}

Example 8 with DictionaryColumnUniqueIdentifier

use of org.apache.carbondata.core.cache.dictionary.DictionaryColumnUniqueIdentifier in project carbondata by apache.

the class QueryUtil method getDictionaryMap.

/**
   * Below method will be used to get the column id to its dictionary mapping
   *
   * @param dictionaryColumnIdList  dictionary column list
   * @param absoluteTableIdentifier absolute table identifier
   * @return dictionary mapping
   * @throws IOException
   */
private static Map<String, Dictionary> getDictionaryMap(List<String> dictionaryColumnIdList, AbsoluteTableIdentifier absoluteTableIdentifier) throws IOException {
    // this for dictionary unique identifier
    List<DictionaryColumnUniqueIdentifier> dictionaryColumnUniqueIdentifiers = getDictionaryColumnUniqueIdentifierList(dictionaryColumnIdList, absoluteTableIdentifier.getCarbonTableIdentifier());
    CacheProvider cacheProvider = CacheProvider.getInstance();
    Cache<DictionaryColumnUniqueIdentifier, Dictionary> forwardDictionaryCache = cacheProvider.createCache(CacheType.FORWARD_DICTIONARY, absoluteTableIdentifier.getStorePath());
    List<Dictionary> columnDictionaryList = forwardDictionaryCache.getAll(dictionaryColumnUniqueIdentifiers);
    Map<String, Dictionary> columnDictionaryMap = new HashMap<>(columnDictionaryList.size());
    for (int i = 0; i < dictionaryColumnUniqueIdentifiers.size(); i++) {
        // TODO: null check for column dictionary, if cache size is less it
        // might return null here, in that case throw exception
        columnDictionaryMap.put(dictionaryColumnIdList.get(i), columnDictionaryList.get(i));
    }
    return columnDictionaryMap;
}