Examples with Row me.prettyprint.hector.api.beans.Row used on opensource projects

Example 6 with Row

use of me.prettyprint.hector.api.beans.Row in project logprocessing by cloudian.

the class CDRDataAccess method deleteBeforeTS.

// Delete all entries before (and including) a particular hour timestamp.  
// For the hourly timeline, 
public void deleteBeforeTS(long hourStamp) {
    String sLastHour = m_sdfHourly.format(new Date(hourStamp));
    String strLastHourCompare = String.format("%013d", hourStamp);
    // those columns.
    try {
        boolean bMoreRows = true;
        String begRangeKey = "";
        // Handle HourlyTimeline and CDREntry CFs first
        while (bMoreRows) {
            List<Row<String, String, String>> rows = m_daoHourlyTimeline.getRangeSlice(begRangeKey, sLastHour, "", LIMIT, false);
            if (rows.size() > 0) {
                Row<String, String, String> lastRow = rows.get(rows.size() - 1);
                // Get start key for next range slice
                begRangeKey = lastRow.getKey();
                for (Row<String, String, String> row : rows) {
                    List<HColumn<String, String>> cols = row.getColumnSlice().getColumns();
                    for (HColumn<String, String> col : cols) {
                        String entryId = col.getValue();
                        // Delete individual CDR entry
                        m_daoCDREntry.delete(entryId, null, StringSerializer.get());
                    }
                    String hourKey = row.getKey();
                    // Delete entire row.
                    m_daoHourlyTimeline.delete(hourKey, null, StringSerializer.get());
                }
                if (rows.size() == 1) {
                    // this is the last row in the slice - data was already deleted.
                    bMoreRows = false;
                }
            } else {
                // Done operating on rows for HourlyTimeline
                bMoreRows = false;
            }
        }
        // Now take care of MSISDNTimeline
        bMoreRows = true;
        begRangeKey = "";
        while (bMoreRows) {
            List<Row<String, String, String>> rows = m_daoMSISDNTimeline.getRangeSlice(begRangeKey, "", "", LIMIT, false);
            if (rows.size() > 0) {
                Row<String, String, String> lastRow = rows.get(rows.size() - 1);
                // Get start key for next range slice
                begRangeKey = lastRow.getKey();
                for (Row<String, String, String> row : rows) {
                    List<HColumn<String, String>> cols = row.getColumnSlice().getColumns();
                    for (HColumn<String, String> col : cols) {
                        String colStamp = col.getName();
                        if (colStamp.compareTo(strLastHourCompare) < 0) {
                            // Lexicographic comparison - want to ignore the UUID portion of column name
                            // Delete MSISDNTimeline column
                            m_daoHourlyTimeline.delete(row.getKey(), colStamp, StringSerializer.get());
                        // TODO: Should we optimize to add all deletions for the row, and then execute??
                        }
                    }
                }
                if (rows.size() == 1) {
                    // this is the last row in the slice - data was already deleted.
                    bMoreRows = false;
                }
            } else {
                // Done operating on rows for MSISDNTimeline
                bMoreRows = false;
            }
        }
    } catch (Exception e) {
        logger.error(e.getMessage());
        e.printStackTrace();
    }
}