Examples of org.apache.hadoop.hbase.client.HTableInterface

org.apache.hadoop.hbase.client.HTableInterface
Used to communicate with a single HBase table. @since 0.21.0

    this.tableResource = tableResource;
  }


  private HTableDescriptor getTableSchema() throws IOException,
      TableNotFoundException {
    HTableInterface table = servlet.getTable(tableResource.getName());
    try {
      return table.getTableDescriptor();
    } finally {
      table.close();
    }
  }

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        .type(MIMETYPE_TEXT).entity("Invalid check value '" + check + "'" + CRLF)
        .build();
    }


    HTablePool pool = servlet.getTablePool();
    HTableInterface table = null;
    try {
      List<RowModel> rows = model.getRows();
      List<Put> puts = new ArrayList<Put>();
      for (RowModel row: rows) {
        byte[] key = row.getKey();
        if (key == null) {
          key = rowspec.getRow();
        }
        if (key == null) {
          return Response.status(Response.Status.BAD_REQUEST)
            .type(MIMETYPE_TEXT).entity("Bad request" + CRLF)
            .build();
        }
        Put put = new Put(key);
        int i = 0;
        for (CellModel cell: row.getCells()) {
          byte[] col = cell.getColumn();
          if (col == null) try {
            col = rowspec.getColumns()[i++];
          } catch (ArrayIndexOutOfBoundsException e) {
            col = null;
          }
          if (col == null) {
            return Response.status(Response.Status.BAD_REQUEST)
              .type(MIMETYPE_TEXT).entity("Bad request" + CRLF)
              .build();
          }
          byte [][] parts = KeyValue.parseColumn(col);
          if (parts.length == 2 && parts[1].length > 0) {
            put.add(parts[0], parts[1], cell.getTimestamp(), cell.getValue());
          } else {
            put.add(parts[0], null, cell.getTimestamp(), cell.getValue());
          }
        }
        puts.add(put);
        if (LOG.isDebugEnabled()) {
          LOG.debug("PUT " + put.toString());
        }
      }
      table = pool.getTable(tableResource.getName());
      table.put(puts);
      table.flushCommits();
      ResponseBuilder response = Response.ok();
      servlet.getMetrics().incrementSucessfulPutRequests(1);
      return response.build();
    } catch (IOException e) {
      servlet.getMetrics().incrementFailedPutRequests(1);
      return Response.status(Response.Status.SERVICE_UNAVAILABLE)
        .type(MIMETYPE_TEXT).entity("Unavailable" + CRLF)
        .build();
    } finally {
      if (table != null) try {
        table.close();
      } catch (IOException ioe) {
        LOG.debug("Exception received while closing the table", ioe);
      }
    }
  }

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      return Response.status(Response.Status.FORBIDDEN)
        .type(MIMETYPE_TEXT).entity("Forbidden" + CRLF)
        .build();
    }
    HTablePool pool = servlet.getTablePool();
    HTableInterface table = null;
    try {
      byte[] row = rowspec.getRow();
      byte[][] columns = rowspec.getColumns();
      byte[] column = null;
      if (columns != null) {
        column = columns[0];
      }
      long timestamp = HConstants.LATEST_TIMESTAMP;
      List<String> vals = headers.getRequestHeader("X-Row");
      if (vals != null && !vals.isEmpty()) {
        row = Bytes.toBytes(vals.get(0));
      }
      vals = headers.getRequestHeader("X-Column");
      if (vals != null && !vals.isEmpty()) {
        column = Bytes.toBytes(vals.get(0));
      }
      vals = headers.getRequestHeader("X-Timestamp");
      if (vals != null && !vals.isEmpty()) {
        timestamp = Long.valueOf(vals.get(0));
      }
      if (column == null) {
        return Response.status(Response.Status.BAD_REQUEST)
          .type(MIMETYPE_TEXT).entity("Bad request" + CRLF)
          .build();
      }
      Put put = new Put(row);
      byte parts[][] = KeyValue.parseColumn(column);
      if (parts.length == 2 && parts[1].length > 0) {
        put.add(parts[0], parts[1], timestamp, message);
      } else {
        put.add(parts[0], null, timestamp, message);
      }
      table = pool.getTable(tableResource.getName());
      table.put(put);
      if (LOG.isDebugEnabled()) {
        LOG.debug("PUT " + put.toString());
      }
      servlet.getMetrics().incrementSucessfulPutRequests(1);
      return Response.ok().build();
    } catch (IOException e) {
      servlet.getMetrics().incrementFailedPutRequests(1);
      return Response.status(Response.Status.SERVICE_UNAVAILABLE)
        .type(MIMETYPE_TEXT).entity("Unavailable" + CRLF)
        .build();
    } finally {
      if (table != null) try {
        table.close();
      } catch (IOException ioe) { }
    }
  }

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          delete.deleteFamily(split[0]);
        }
      }
    }
    HTablePool pool = servlet.getTablePool();
    HTableInterface table = null;
    try {
      table = pool.getTable(tableResource.getName());
      table.delete(delete);
      servlet.getMetrics().incrementSucessfulDeleteRequests(1);
      if (LOG.isDebugEnabled()) {
        LOG.debug("DELETE " + delete.toString());
      }
    } catch (IOException e) {
      servlet.getMetrics().incrementFailedDeleteRequests(1);
      return Response.status(Response.Status.SERVICE_UNAVAILABLE)
        .type(MIMETYPE_TEXT).entity("Unavailable" + CRLF)
        .build();
    } finally {
      if (table != null) try {
        table.close();
      } catch (IOException ioe) { }
    }
    return Response.ok().build();
  }

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   * @param model instance of CellSetModel
   * @return Response 200 OK, 304 Not modified, 400 Bad request
   */
  Response checkAndPut(final CellSetModel model) {
    HTablePool pool = servlet.getTablePool();
    HTableInterface table = null;
    try {
      if (model.getRows().size() != 1) {
        return Response.status(Response.Status.BAD_REQUEST)
          .type(MIMETYPE_TEXT).entity("Bad request" + CRLF)
          .build();
      }


      RowModel rowModel = model.getRows().get(0);
      byte[] key = rowModel.getKey();
      if (key == null) {
        key = rowspec.getRow();
      }


      List<CellModel> cellModels = rowModel.getCells();
      int cellModelCount = cellModels.size();
      if (key == null || cellModelCount <= 1) {
        return Response.status(Response.Status.BAD_REQUEST)
          .type(MIMETYPE_TEXT).entity("Bad request" + CRLF)
          .build();
      }


      Put put = new Put(key);
      CellModel valueToCheckCell = cellModels.get(cellModelCount - 1);
      byte[] valueToCheckColumn = valueToCheckCell.getColumn();
      byte[][] valueToPutParts = KeyValue.parseColumn(valueToCheckColumn);
      if (valueToPutParts.length == 2 && valueToPutParts[1].length > 0) {
        CellModel valueToPutCell = null;
        for (int i = 0, n = cellModelCount - 1; i < n ; i++) {
          if(Bytes.equals(cellModels.get(i).getColumn(),
              valueToCheckCell.getColumn())) {
            valueToPutCell = cellModels.get(i);
            break;
          }
        }
        if (valueToPutCell != null) {
          put.add(valueToPutParts[0], valueToPutParts[1], valueToPutCell
            .getTimestamp(), valueToPutCell.getValue());
        } else {
          return Response.status(Response.Status.BAD_REQUEST)
            .type(MIMETYPE_TEXT).entity("Bad request" + CRLF)
            .build();
        }
      } else {
        return Response.status(Response.Status.BAD_REQUEST)
          .type(MIMETYPE_TEXT).entity("Bad request" + CRLF)
          .build();
      }


      table = pool.getTable(this.tableResource.getName());
      boolean retValue = table.checkAndPut(key, valueToPutParts[0],
        valueToPutParts[1], valueToCheckCell.getValue(), put);
      if (LOG.isDebugEnabled()) {
        LOG.debug("CHECK-AND-PUT " + put.toString() + ", returns " + retValue);
      }
      table.flushCommits();
      ResponseBuilder response = Response.ok();
      if (!retValue) {
        response = Response.status(304);
      }
      return response.build();
    } catch (IOException e) {
      return Response.status(Response.Status.SERVICE_UNAVAILABLE)
        .type(MIMETYPE_TEXT).entity("Unavailable" + CRLF)
        .build();
    } finally {
      if (table != null) try {
        table.close();
      } catch (IOException ioe) { }
    }
  }

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   * @param model instance of CellSetModel
   * @return Response 200 OK, 304 Not modified, 400 Bad request
   */
  Response checkAndDelete(final CellSetModel model) {
    HTablePool pool = servlet.getTablePool();
    HTableInterface table = null;
    Delete delete = null;
    try {
      if (model.getRows().size() != 1) {
        return Response.status(Response.Status.BAD_REQUEST)
          .type(MIMETYPE_TEXT).entity("Bad request" + CRLF)
          .build();
      }
      RowModel rowModel = model.getRows().get(0);
      byte[] key = rowModel.getKey();
      if (key == null) {
        key = rowspec.getRow();
      }
      if (key == null) {
        return Response.status(Response.Status.BAD_REQUEST)
          .type(MIMETYPE_TEXT).entity("Bad request" + CRLF)
          .build();
      }


      delete = new Delete(key);
      CellModel valueToDeleteCell = rowModel.getCells().get(0);
      byte[] valueToDeleteColumn = valueToDeleteCell.getColumn();
      if (valueToDeleteColumn == null) {
        try {
          valueToDeleteColumn = rowspec.getColumns()[0];
        } catch (final ArrayIndexOutOfBoundsException e) {
          return Response.status(Response.Status.BAD_REQUEST)
            .type(MIMETYPE_TEXT).entity("Bad request" + CRLF)
            .build();
        }
      }
      byte[][] parts = KeyValue.parseColumn(valueToDeleteColumn);
      if (parts.length == 2 && parts[1].length > 0) {
        delete.deleteColumns(parts[0], parts[1]);
      } else {
        return Response.status(Response.Status.BAD_REQUEST)
          .type(MIMETYPE_TEXT).entity("Bad request" + CRLF)
          .build();
      }


      table = pool.getTable(tableResource.getName());
      boolean retValue = table.checkAndDelete(key, parts[0], parts[1],
        valueToDeleteCell.getValue(), delete);
      if (LOG.isDebugEnabled()) {
        LOG.debug("CHECK-AND-DELETE " + delete.toString() + ", returns "
          + retValue);
      }
      table.flushCommits();
      ResponseBuilder response = Response.ok();
      if (!retValue) {
        response = Response.status(304);
      }
      return response.build();
    } catch (IOException e) {
      return Response.status(Response.Status.SERVICE_UNAVAILABLE)
        .type(MIMETYPE_TEXT).entity("Unavailable" + CRLF)
        .build();
    } finally {
      if (table != null) try {
        table.close();
      } catch (IOException ioe) {
        LOG.debug("Exception received while closing the table", ioe);
      }
    }
  }

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   */
  protected void batch(byte[] tableName, Collection<List<Row>> allRows) throws IOException {
    if (allRows.isEmpty()) {
      return;
    }
    HTableInterface table = null;
    try {
      table = this.sharedHtableCon.getTable(tableName);
      for (List<Row> rows : allRows) {
        table.batch(rows);
        this.metrics.appliedOpsRate.inc(rows.size());
      }
    } catch (InterruptedException ix) {
      throw new IOException(ix);
    } finally {
      if (table != null) {
        table.close();
      }
    }
  }

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  public static class SendToOtherTableCoprocessor extends BaseRegionObserver {


    @Override
    public void prePut(ObserverContext<RegionCoprocessorEnvironment> e, Put put, WALEdit edit,
        boolean writeToWAL) throws IOException {
      HTableInterface table = e.getEnvironment().getTable(otherTable);
      table.put(put);
      table.flushCommits();
      completed[0] = true;
      table.close();
    }

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    }


    @Override
    public void prePut(ObserverContext<RegionCoprocessorEnvironment> e, Put put, WALEdit edit,
        boolean writeToWAL) throws IOException {
      HTableInterface table = e.getEnvironment().getTable(otherTable, getPool());
      Put p = new Put(new byte[] { 'a' });
      p.add(family, null, new byte[] { 'a' });
      try {
        table.batch(Collections.singletonList(put));
      } catch (InterruptedException e1) {
        throw new IOException(e1);
      }
      completedWithPool[0] = true;
      table.close();
    }

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  }


  private HTableDescriptor getTableSchema() throws IOException,
      TableNotFoundException {
    HTablePool pool = servlet.getTablePool();
    HTableInterface table = pool.getTable(tableResource.getName());
    try {
      return table.getTableDescriptor();
    } finally {
      table.close();
    }
  }

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