Package org.apache.hadoop.hbase.thrift2.generated

Examples of org.apache.hadoop.hbase.thrift2.generated.TScan

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  @Override
  public List<TResult> getScannerRows(int scannerId, int numRows) throws TIOError,
      TIllegalArgument, TException {
    ResultScanner scanner = getScanner(scannerId);
    if (scanner == null) {
      TIllegalArgument ex = new TIllegalArgument();
      ex.setMessage("Invalid scanner Id");
      throw ex;
    }

    try {
      return resultsFromHBase(scanner.next(numRows));
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    LOG.debug("scannerClose: id=" + scannerId);
    ResultScanner scanner = getScanner(scannerId);
    if (scanner == null) {
      String message = "scanner ID is invalid";
      LOG.warn(message);
      TIllegalArgument ex = new TIllegalArgument();
      ex.setMessage("Invalid scanner Id");
      throw ex;
    }
    scanner.close();
    removeScanner(scannerId);
  }
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   *
   * @return converted result, returns an empty result if the input is <code>null</code>
   */
  public static TResult resultFromHBase(Result in) {
    Cell[] raw = in.rawCells();
    TResult out = new TResult();
    byte[] row = in.getRow();
    if (row != null) {
      out.setRow(in.getRow());
    }
    List<TColumnValue> columnValues = new ArrayList<TColumnValue>();
    for (Cell kv : raw) {
      TColumnValue col = new TColumnValue();
      col.setFamily(CellUtil.cloneFamily(kv));
      col.setQualifier(CellUtil.cloneQualifier(kv));
      col.setTimestamp(kv.getTimestamp());
      col.setValue(CellUtil.cloneValue(kv));
      columnValues.add(col);
    }
    out.setColumnValues(columnValues);
    return out;
  }
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      TPut put = new TPut(wrap(("testScan" + i).getBytes()), columnValues);
      handler.put(table, put);
    }

    // create scan instance
    TScan scan = new TScan();
    List<TColumn> columns = new ArrayList<TColumn>();
    TColumn column = new TColumn();
    column.setFamily(familyAname);
    column.setQualifier(qualifierAname);
    columns.add(column);
    scan.setColumns(columns);
    scan.setStartRow("testScan".getBytes());
    scan.setStopRow("testScan\uffff".getBytes());

    // get scanner and rows
    int scanId = handler.openScanner(table, scan);
    List<TResult> results = handler.getScannerRows(scanId, 10);
    assertEquals(10, results.size());
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      TPut put = new TPut(wrap(("testScanWithFilter" + i).getBytes()), columnValues);
      handler.put(table, put);
    }

    // create scan instance with filter
    TScan scan = new TScan();
    List<TColumn> columns = new ArrayList<TColumn>();
    TColumn column = new TColumn();
    column.setFamily(familyAname);
    column.setQualifier(qualifierAname);
    columns.add(column);
    scan.setColumns(columns);
    scan.setStartRow("testScanWithFilter".getBytes());
    scan.setStopRow("testScanWithFilter\uffff".getBytes());
    // only get the key part
    scan.setFilterString(wrap(("KeyOnlyFilter()").getBytes()));

    // get scanner and rows
    int scanId = handler.openScanner(table, scan);
    List<TResult> results = handler.getScannerRows(scanId, 10);
    assertEquals(10, results.size());
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    }
    TPut put = new TPut(wrap(("testScanWithBatchSize").getBytes()), columnValues);
    handler.put(table, put);

    // create scan instance
    TScan scan = new TScan();
    List<TColumn> columns = new ArrayList<TColumn>();
    TColumn column = new TColumn();
    column.setFamily(familyAname);
    columns.add(column);
    scan.setColumns(columns);
    scan.setStartRow("testScanWithBatchSize".getBytes());
    scan.setStopRow("testScanWithBatchSize\uffff".getBytes());
    // set batch size to 10 columns per call
    scan.setBatchSize(10);

    // get scanner
    int scanId = handler.openScanner(table, scan);
    List<TResult> results = null;
    for (int i = 0; i < 10; i++) {
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          new TPut(wrap(("testGetScannerResults" + pad(i, (byte) 2)).getBytes()), columnValues);
      handler.put(table, put);
    }

    // create scan instance
    TScan scan = new TScan();
    List<TColumn> columns = new ArrayList<TColumn>();
    TColumn column = new TColumn();
    column.setFamily(familyAname);
    column.setQualifier(qualifierAname);
    columns.add(column);
    scan.setColumns(columns);
    scan.setStartRow("testGetScannerResults".getBytes());

    // get 5 rows and check the returned results
    scan.setStopRow("testGetScannerResults05".getBytes());
    List<TResult> results = handler.getScannerResults(table, scan, 5);
    assertEquals(5, results.size());
    for (int i = 0; i < 5; i++) {
      // check if the rows are returned and in order
      assertArrayEquals(("testGetScannerResults" + pad(i, (byte) 2)).getBytes(), results.get(i)
          .getRow());
    }

    // get 10 rows and check the returned results
    scan.setStopRow("testGetScannerResults10".getBytes());
    results = handler.getScannerResults(table, scan, 10);
    assertEquals(10, results.size());
    for (int i = 0; i < 10; i++) {
      // check if the rows are returned and in order
      assertArrayEquals(("testGetScannerResults" + pad(i, (byte) 2)).getBytes(), results.get(i)
          .getRow());
    }

    // get 20 rows and check the returned results
    scan.setStopRow("testGetScannerResults20".getBytes());
    results = handler.getScannerResults(table, scan, 20);
    assertEquals(20, results.size());
    for (int i = 0; i < 20; i++) {
      // check if the rows are returned and in order
      assertArrayEquals(("testGetScannerResults" + pad(i, (byte) 2)).getBytes(), results.get(i)
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    TPut tPut = new TPut(wrap(rowName) , columnValues);
    tPut.setAttributes(attributes);
    Put put = putFromThrift(tPut);
    assertArrayEquals(put.getAttribute("attribute1"), attributeValue);

    TScan tScan = new TScan();
    tScan.setAttributes(attributes);
    Scan scan = scanFromThrift(tScan);
    assertArrayEquals(scan.getAttribute("attribute1"), attributeValue);

    TDelete tDelete = new TDelete(wrap(rowName));
    tDelete.setAttributes(attributes);
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      TPut put = new TPut(wrap(("testScan" + i).getBytes()), columnValues);
      handler.put(table, put);
    }

    // create scan instance
    TScan scan = new TScan();
    List<TColumn> columns = new ArrayList<TColumn>();
    TColumn column = new TColumn();
    column.setFamily(familyAname);
    column.setQualifier(qualifierAname);
    columns.add(column);
    scan.setColumns(columns);
    scan.setStartRow("testScan".getBytes());
    scan.setStopRow("testScan\uffff".getBytes());

    // get scanner and rows
    int scanId = handler.openScanner(table, scan);
    List<TResult> results = handler.getScannerRows(scanId, 10);
    assertEquals(10, results.size());
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      TPut put = new TPut(wrap(("testScanWithFilter" + i).getBytes()), columnValues);
      handler.put(table, put);
    }

    // create scan instance with filter
    TScan scan = new TScan();
    List<TColumn> columns = new ArrayList<TColumn>();
    TColumn column = new TColumn();
    column.setFamily(familyAname);
    column.setQualifier(qualifierAname);
    columns.add(column);
    scan.setColumns(columns);
    scan.setStartRow("testScanWithFilter".getBytes());
    scan.setStopRow("testScanWithFilter\uffff".getBytes());
    // only get the key part
    scan.setFilterString(wrap(("KeyOnlyFilter()").getBytes()));

    // get scanner and rows
    int scanId = handler.openScanner(table, scan);
    List<TResult> results = handler.getScannerRows(scanId, 10);
    assertEquals(10, results.size());
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