Java Get.setTimeRange方法代码示例

import org.apache.hadoop.hbase.client.Get; //导入方法依赖的package包/类
/**
 * Note: this internal interface is slightly different from public APIs in regard to handling
 * of the qualifier. Here we differ from the public Java API in that null != byte[0]. Rather,
 * we respect qual == null as a request for the entire column family. The caller (
 * {@link #getVerTs(ByteBuffer, ByteBuffer, ByteBuffer, long, int, Map)}) interface IS
 * consistent in that the column is parse like normal.
 */
protected List<TCell> getVerTs(ByteBuffer tableName, ByteBuffer row, byte[] family,
    byte[] qualifier, long timestamp, int numVersions, Map<ByteBuffer, ByteBuffer> attributes)
    throws IOError {

  Table table = null;
  try {
    table = getTable(tableName);
    Get get = new Get(getBytes(row));
    addAttributes(get, attributes);
    if (null == qualifier) {
      get.addFamily(family);
    } else {
      get.addColumn(family, qualifier);
    }
    get.setTimeRange(0, timestamp);
    get.setMaxVersions(numVersions);
    Result result = table.get(get);
    return ThriftUtilities.cellFromHBase(result.rawCells());
  } catch (IOException e) {
    LOG.warn(e.getMessage(), e);
    throw new IOError(Throwables.getStackTraceAsString(e));
  } finally{
    closeTable(table);
  }
}
 

import org.apache.hadoop.hbase.client.Get; //导入方法依赖的package包/类
/**
 * Run a Get against passed in <code>store</code> on passed <code>row</code>, etc.
 *
 * @param store
 * @param row
 * @param family
 * @param tr
 * @return Get result.
 * @throws IOException
 */
private List<Cell> doGet(final Store store, final byte[] row,
    final Map.Entry<byte[], List<Cell>> family, final TimeRange tr) throws IOException {
  // Sort the cells so that they match the order that they
  // appear in the Get results. Otherwise, we won't be able to
  // find the existing values if the cells are not specified
  // in order by the client since cells are in an array list.
  Collections.sort(family.getValue(), store.getComparator());
  // Get previous values for all columns in this family
  Get get = new Get(row);
  for (Cell cell : family.getValue()) {
    get.addColumn(family.getKey(), CellUtil.cloneQualifier(cell));
  }
  if (tr != null) get.setTimeRange(tr.getMin(), tr.getMax());
  return get(get, false);
}
 

import org.apache.hadoop.hbase.client.Get; //导入方法依赖的package包/类
@Override
public List<TRowResult> getRowsWithColumnsTs(ByteBuffer tableName,
                                             List<ByteBuffer> rows,
    List<ByteBuffer> columns, long timestamp,
    Map<ByteBuffer, ByteBuffer> attributes) throws IOError {

  Table table= null;
  try {
    List<Get> gets = new ArrayList<Get>(rows.size());
    table = getTable(tableName);
    if (metrics != null) {
      metrics.incNumRowKeysInBatchGet(rows.size());
    }
    for (ByteBuffer row : rows) {
      Get get = new Get(getBytes(row));
      addAttributes(get, attributes);
      if (columns != null) {

        for(ByteBuffer column : columns) {
          byte [][] famAndQf = KeyValue.parseColumn(getBytes(column));
          if (famAndQf.length == 1) {
            get.addFamily(famAndQf[0]);
          } else {
            get.addColumn(famAndQf[0], famAndQf[1]);
          }
        }
      }
      get.setTimeRange(0, timestamp);
      gets.add(get);
    }
    Result[] result = table.get(gets);
    return ThriftUtilities.rowResultFromHBase(result);
  } catch (IOException e) {
    LOG.warn(e.getMessage(), e);
    throw new IOError(Throwables.getStackTraceAsString(e));
  } finally{
    closeTable(table);
  }
}
 

import org.apache.hadoop.hbase.client.Get; //导入方法依赖的package包/类
/**
 * Do a specific Get on passed <code>columnFamily</code> and column qualifiers from
 * <code>incrementCoordinates</code> only.
 *
 * @param increment
 * @param columnFamily
 * @param increments
 * @return Return the Cells to Increment
 * @throws IOException
 */
private List<Cell> getIncrementCurrentValue(final Increment increment, byte[] columnFamily,
    final List<Cell> increments, final IsolationLevel isolation) throws IOException {
  Get get = new Get(increment.getRow());
  if (isolation != null) get.setIsolationLevel(isolation);
  for (Cell cell : increments) {
    get.addColumn(columnFamily, CellUtil.cloneQualifier(cell));
  }
  TimeRange tr = increment.getTimeRange();
  if (tr != null) {
    get.setTimeRange(tr.getMin(), tr.getMax());
  }
  return get(get, false);
}
 

import org.apache.hadoop.hbase.client.Get; //导入方法依赖的package包/类
private void checkGet(Region region, byte[] row, byte[] fam, byte[] col,
    long time, byte[]... vals) throws IOException {
  Get g = new Get(row);
  g.addColumn(fam, col);
  g.setMaxVersions();
  g.setTimeRange(0L, time);
  Result r = region.get(g);
  checkResult(r, fam, col, vals);

}
 

import org.apache.hadoop.hbase.client.Get; //导入方法依赖的package包/类
@Test public void testGet() throws Exception{
  byte[] row = "row".getBytes();
  byte[] fam = "fam".getBytes();
  byte[] qf1 = "qf1".getBytes();

  long ts = System.currentTimeMillis();
  int maxVersions = 2;

  Get get = new Get(row);
  get.addColumn(fam, qf1);
  get.setTimeRange(ts, ts+1);
  get.setMaxVersions(maxVersions);

  ClientProtos.Get getProto = ProtobufUtil.toGet(get);
  Get desGet = ProtobufUtil.toGet(getProto);

  assertTrue(Bytes.equals(get.getRow(), desGet.getRow()));
  Set<byte[]> set = null;
  Set<byte[]> desSet = null;

  for(Map.Entry<byte[], NavigableSet<byte[]>> entry :
      get.getFamilyMap().entrySet()){
    assertTrue(desGet.getFamilyMap().containsKey(entry.getKey()));
    set = entry.getValue();
    desSet = desGet.getFamilyMap().get(entry.getKey());
    for(byte [] qualifier : set){
      assertTrue(desSet.contains(qualifier));
    }
  }

  assertEquals(get.getMaxVersions(), desGet.getMaxVersions());
  TimeRange tr = get.getTimeRange();
  TimeRange desTr = desGet.getTimeRange();
  assertEquals(tr.getMax(), desTr.getMax());
  assertEquals(tr.getMin(), desTr.getMin());
}
 

import org.apache.hadoop.hbase.client.Get; //导入方法依赖的package包/类
public RowResultGenerator(final String tableName, final RowSpec rowspec,
    final Filter filter, final boolean cacheBlocks)
    throws IllegalArgumentException, IOException {
  Table table = RESTServlet.getInstance().getTable(tableName);
  try {
    Get get = new Get(rowspec.getRow());
    if (rowspec.hasColumns()) {
      for (byte[] col: rowspec.getColumns()) {
        byte[][] split = KeyValue.parseColumn(col);
        if (split.length == 1) {
          get.addFamily(split[0]);
        } else if (split.length == 2) {
          get.addColumn(split[0], split[1]);
        } else {
          throw new IllegalArgumentException("Invalid column specifier.");
        }
      }
    }
    get.setTimeRange(rowspec.getStartTime(), rowspec.getEndTime());
    get.setMaxVersions(rowspec.getMaxVersions());
    if (filter != null) {
      get.setFilter(filter);
    }
    get.setCacheBlocks(cacheBlocks);
    Result result = table.get(get);
    if (result != null && !result.isEmpty()) {
      valuesI = result.listCells().iterator();
    }
  } catch (DoNotRetryIOException | NeedUnmanagedConnectionException e) {
    // Warn here because Stargate will return 404 in the case if multiple
    // column families were specified but one did not exist -- currently
    // HBase will fail the whole Get.
    // Specifying multiple columns in a URI should be uncommon usage but
    // help to avoid confusion by leaving a record of what happened here in
    // the log.
    LOG.warn(StringUtils.stringifyException(e));
  } finally {
    table.close();
  }
}
 

import org.apache.hadoop.hbase.client.Get; //导入方法依赖的package包/类
/**
 * Creates a {@link Get} (HBase) from a {@link TGet} (Thrift).
 *
 * This ignores any timestamps set on {@link TColumn} objects.
 *
 * @param in the <code>TGet</code> to convert
 *
 * @return <code>Get</code> object
 *
 * @throws IOException if an invalid time range or max version parameter is given
 */
public static Get getFromThrift(TGet in) throws IOException {
  Get out = new Get(in.getRow());

  // Timestamp overwrites time range if both are set
  if (in.isSetTimestamp()) {
    out.setTimeStamp(in.getTimestamp());
  } else if (in.isSetTimeRange()) {
    out.setTimeRange(in.getTimeRange().getMinStamp(), in.getTimeRange().getMaxStamp());
  }

  if (in.isSetMaxVersions()) {
    out.setMaxVersions(in.getMaxVersions());
  }

  if (in.isSetFilterString()) {
    ParseFilter parseFilter = new ParseFilter();
    out.setFilter(parseFilter.parseFilterString(in.getFilterString()));
  }

  if (in.isSetAttributes()) {
    addAttributes(out,in.getAttributes());
  }

  if (in.isSetAuthorizations()) {
    out.setAuthorizations(new Authorizations(in.getAuthorizations().getLabels()));
  }
  
  if (!in.isSetColumns()) {
    return out;
  }

  for (TColumn column : in.getColumns()) {
    if (column.isSetQualifier()) {
      out.addColumn(column.getFamily(), column.getQualifier());
    } else {
      out.addFamily(column.getFamily());
    }
  }

  return out;
}
 

import org.apache.hadoop.hbase.client.Get; //导入方法依赖的package包/类
/**
 * basic verification of existing behavior
 */
@Test
public void testWithoutKeepingDeletes() throws Exception {
  // KEEP_DELETED_CELLS is NOT enabled
  HTableDescriptor htd = hbu.createTableDescriptor(name.getMethodName(), 0, 3,
      HConstants.FOREVER, KeepDeletedCells.FALSE);
  HRegion region = hbu.createLocalHRegion(htd, null, null);

  long ts = EnvironmentEdgeManager.currentTime();
  Put p = new Put(T1, ts);
  p.add(c0, c0, T1);
  region.put(p);

  Get gOne = new Get(T1);
  gOne.setMaxVersions();
  gOne.setTimeRange(0L, ts + 1);
  Result rOne = region.get(gOne);
  assertFalse(rOne.isEmpty());


  Delete d = new Delete(T1, ts+2);
  d.deleteColumn(c0, c0, ts);
  region.delete(d);

  // "past" get does not see rows behind delete marker
  Get g = new Get(T1);
  g.setMaxVersions();
  g.setTimeRange(0L, ts+1);
  Result r = region.get(g);
  assertTrue(r.isEmpty());

  // "past" scan does not see rows behind delete marker
  Scan s = new Scan();
  s.setMaxVersions();
  s.setTimeRange(0L, ts+1);
  InternalScanner scanner = region.getScanner(s);
  List<Cell> kvs = new ArrayList<Cell>();
  while (scanner.next(kvs))
    ;
  assertTrue(kvs.isEmpty());

  // flushing and minor compaction keep delete markers
  region.flush(true);
  region.compact(false);
  assertEquals(1, countDeleteMarkers(region));
  region.compact(true);
  // major compaction deleted it
  assertEquals(0, countDeleteMarkers(region));

  HRegion.closeHRegion(region);
}