Examples of org.apache.hadoop.hbase.filter.WhileMatchFilter

org.apache.hadoop.hbase.filter.WhileMatchFilter
A wrapper filter that returns true from {@link #filterAllRemaining()} as soonas the wrapped filters {@link Filter#filterRowKey(byte[],int,int)}, {@link Filter#filterKeyValue(org.apache.hadoop.hbase.KeyValue)}, {@link org.apache.hadoop.hbase.filter.Filter#filterRow()} or{@link org.apache.hadoop.hbase.filter.Filter#filterAllRemaining()} methodsreturns true.


    @Override
    void testRow(final int i) throws IOException {
      Scan scan = new Scan(getRandomRow(this.rand, this.totalRows));
      scan.addColumn(FAMILY_NAME, QUALIFIER_NAME);
      scan.setFilter(new WhileMatchFilter(new PageFilter(120)));
      ResultScanner s = this.table.getScanner(scan);
      s.close();
    }

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    assertTrue(key != null && key.length > 0 &&
      Bytes.BYTES_COMPARATOR.compare(key, new byte [] {'a', 'a', 'a'}) >= 0);
    LOG.info("Key=" + Bytes.toString(key));
    Scan s = startRow == null? new Scan(): new Scan(startRow);
    Filter f = new RowFilter(op, new BinaryComparator(key));
    f = new WhileMatchFilter(f);
    s.setFilter(f);
    return s;
  }

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        break;
      case ValueFilter:
        filter = new ValueFilter(CompareOp.valueOf(op), comparator.build());
        break;
      case WhileMatchFilter:
        filter = new WhileMatchFilter(filters.get(0).build());
        break;
      default:
        throw new RuntimeException("unhandled filter type: " + type);
      }
      return filter;

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    assertTrue(key != null && key.length > 0 &&
      Bytes.BYTES_COMPARATOR.compare(key, new byte [] {'a', 'a', 'a'}) >= 0);
    LOG.info("Key=" + Bytes.toString(key));
    Scan s = startRow == null? new Scan(): new Scan(startRow);
    Filter f = new RowFilter(op, new BinaryComparator(key));
    f = new WhileMatchFilter(f);
    s.setFilter(f);
    return s;
  }

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                scan.setStopRow(increment(lte_));
            }


            // The WhileMatchFilter will short-circuit the scan after we no longer match. The
            // setStopRow call will limit the number of regions we need to scan
            addFilter(new WhileMatchFilter(new RowFilter(CompareOp.LESS_OR_EQUAL, new BinaryComparator(lte_))));
        }
        if (configuredOptions_.hasOption("minTimestamp") || configuredOptions_.hasOption("maxTimestamp")){
            scan.setTimeRange(minTimestamp_, maxTimestamp_);
        }
        if (configuredOptions_.hasOption("timestamp")){

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      Scan scan = new Scan();
      scan.setFilter(newFilter);
      rowPrefixFilter(scan);


      byte[] stopRow = Bytes.toBytes("bbc");
      newFilter = new WhileMatchFilter(new InclusiveStopFilter(stopRow));
      scan = new Scan();
      scan.setFilter(newFilter);
      rowInclusiveStopFilter(scan, stopRow);


    } finally {

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        throws IOError, TException {
      try {
        HTable table = getTable(tableName);
        Scan scan = new Scan(getBytes(startAndPrefix));
        addAttributes(scan, attributes);
        Filter f = new WhileMatchFilter(
            new PrefixFilter(getBytes(startAndPrefix)));
        scan.setFilter(f);
        if (columns != null && columns.size() != 0) {
          for(ByteBuffer column : columns) {
            byte [][] famQf = KeyValue.parseColumn(getBytes(column));

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        break;
      case ValueFilter:
        filter = new ValueFilter(CompareOp.valueOf(op), comparator.build());
        break;
      case WhileMatchFilter:
        filter = new WhileMatchFilter(filters.get(0).build());
        break;
      default:
        throw new RuntimeException("unhandled filter type: " + type);
      }
      return filter;

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    assertTrue(key != null && key.length > 0 &&
      Bytes.BYTES_COMPARATOR.compare(key, new byte [] {'a', 'a', 'a'}) >= 0);
    LOG.info("Key=" + Bytes.toString(key));
    Scan s = startRow == null? new Scan(): new Scan(startRow);
    Filter f = new RowFilter(op, new BinaryComparator(key));
    f = new WhileMatchFilter(f);
    s.setFilter(f);
    return s;
  }

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            //  Once the greater filter on the fromKey returns true, it will remain true because
            //  row keys are sorted. The RowFilter will however keep doing the check again and again
            //  on each new row key. We need a new filter in HBase, something like the opposite of the
            //  WhileMatchFilter.
            filters.addFilter(new RowFilter(CompareOp.GREATER, new BinaryPrefixComparator(fromKey)));
            filters.addFilter(new WhileMatchFilter(toFilter));
        } else {
            filters.addFilter(new WhileMatchFilter(toFilter));
        }


        scan.setFilter(filters);
        scan.setCaching(30);

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