Examples with IndexTableExistException org.apache.spark.sql.secondaryindex.exception.IndexTableExistException used on opensource projects

Example 1 with IndexTableExistException

use of org.apache.spark.sql.secondaryindex.exception.IndexTableExistException in project carbondata by apache.

the class IndexTableUtil method checkAndAddIndexTable.

/**
 * adds index table info into parent table properties
 */
public static String checkAndAddIndexTable(String gsonData, IndexTableInfo newIndexTable, boolean isSecondaryIndex) throws IndexTableExistException {
    IndexTableInfo[] indexTableInfos = IndexTableInfo.fromGson(gsonData);
    if (null == indexTableInfos) {
        indexTableInfos = new IndexTableInfo[0];
    }
    List<IndexTableInfo> indexTables = new ArrayList<>(Arrays.asList(indexTableInfos));
    if (isSecondaryIndex) {
        for (IndexTableInfo indexTable : indexTableInfos) {
            if (indexTable.getIndexProperties().get(CarbonCommonConstants.INDEX_PROVIDER).equalsIgnoreCase(IndexType.SI.getIndexProviderName())) {
                if (indexTable.getIndexCols().size() == newIndexTable.getIndexCols().size()) {
                    // If column order is not same, then also index table creation should be successful
                    // eg., index1 is a,b,d and index2 is a,d,b. Both table creation should be successful
                    boolean isColumnOrderSame = true;
                    for (int i = 0; i < indexTable.getIndexCols().size(); i++) {
                        if (!indexTable.getIndexCols().get(i).equalsIgnoreCase(newIndexTable.getIndexCols().get(i))) {
                            isColumnOrderSame = false;
                            break;
                        }
                    }
                    if (isColumnOrderSame) {
                        throw new IndexTableExistException("Index Table with selected columns already exist");
                    }
                }
            }
        }
    }
    indexTables.add(newIndexTable);
    return IndexTableInfo.toGson(indexTables.toArray(new IndexTableInfo[0]));
}