Examples of org.apache.accumulo.core.data.Value

org.apache.accumulo.core.data.Value
A byte sequence that is usable as a key or value. Based on {@link org.apache.hadoop.io.BytesWritable} only this class is NOT resizable and DOES NOTdistinguish between the size of the sequence and the current capacity as {@link org.apache.hadoop.io.BytesWritable} does. Hence its comparatively'immutable'.

      }
      
      // populate
      for (int i = 0; i < opts.count; i++) {
        Mutation m = new Mutation(new Text(String.format("%05d", i)));
        m.put(new Text("col" + Integer.toString((i % 3) + 1)), new Text("qual"), new Value("junk".getBytes(Constants.UTF8)));
        b.getBatchWriter(tableNames.get(i % tableNames.size())).addMutation(m);
      }
      try {
        b.close();
      } catch (MutationsRejectedException e) {

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  private static final Collection<ByteSequence> EMPTY_COL_FAMS = new ArrayList<ByteSequence>();


  private Key nkv(TreeMap<Key,Value> tm, String row, String cf, String cq, String val) {
    Key k = nk(row, cf, cq);
    tm.put(k, new Value(val.getBytes()));
    return k;
  }

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    // -----------------------------------------------------
    String multiByteText = new String("\u6d67" + "\u6F68" + "\u7067");
    String multiByteRegex = new String(".*" + "\u6F68" + ".*");


    Key k4 = new Key("boo4".getBytes(), "hoo".getBytes(), "20080203".getBytes(), "".getBytes(), 1l);
    Value inVal = new Value(multiByteText.getBytes("UTF-8"));
    tm.put(k4, inVal);


    is.clearOptions();


    RegExFilter.setRegexs(is, null, null, null, multiByteRegex, true);
    rei.init(new SortedMapIterator(tm), is.getOptions(), new DefaultIteratorEnvironment());
    rei.seek(new Range(), EMPTY_COL_FAMS, false);


    assertTrue(rei.hasTop());
    Value outValue = rei.getTopValue();
    String outVal = new String(outValue.get(), "UTF-8");
    assertTrue(outVal.equals(multiByteText));


  }

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    long t1 = System.currentTimeMillis();
    int mc = 1;
    for (int i = 0; i < numRows; i++) {
      Mutation m = nm(i + start);
      for (int j = 0; j < numCols; j++) {
        Value val = new Value("test".getBytes(Constants.UTF8));
        pc(m, j, val);
      }
      nm.mutate(m, mc++);
    }
    long t2 = System.currentTimeMillis();

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      BatchWriter b = connector.createBatchWriter(opts.getTableName(), bwOpts.getBatchWriterConfig());
      
      // populate
      for (int i = 0; i < opts.count; i++) {
        Mutation m = new Mutation(new Text(String.format("%05d", i)));
        m.put(new Text("col" + Integer.toString((i % 3) + 1)), new Text("qual"), new Value("junk".getBytes(Constants.UTF8)));
        b.addMutation(m);
      }
      b.close();
    }

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    }
    return metadataTable;
  }


  public static void putLockID(ZooLock zooLock, Mutation m) {
    Constants.METADATA_LOCK_COLUMN.put(m, new Value(zooLock.getLockID().serialize(ZooUtil.getRoot(HdfsZooInstance.getInstance()) + "/").getBytes(Constants.UTF8)));
  }

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    }


    Mutation m = new Mutation(extent.getMetadataEntry());


    if (dfv.getNumEntries() > 0) {
      m.put(Constants.METADATA_DATAFILE_COLUMN_FAMILY, new Text(path), new Value(dfv.encode()));
      Constants.METADATA_TIME_COLUMN.put(m, new Value(time.getBytes(Constants.UTF8)));
      // stuff in this location
      TServerInstance self = getTServerInstance(address, zooLock);
      self.putLastLocation(m);
      // erase the old location
      if (lastLocation != null && !lastLocation.equals(self))
        lastLocation.clearLastLocation(m);
    }
    if (unusedWalLogs != null) {
      for (String entry : unusedWalLogs) {
        m.putDelete(Constants.METADATA_LOG_COLUMN_FAMILY, new Text(entry));
      }
    }


    for (String scanFile : filesInUseByScans)
      m.put(Constants.METADATA_SCANFILE_COLUMN_FAMILY, new Text(scanFile), new Value(new byte[0]));
    
    if (mergeFile != null)
      m.putDelete(Constants.METADATA_DATAFILE_COLUMN_FAMILY, new Text(mergeFile));
    
    Constants.METADATA_FLUSH_COLUMN.put(m, new Value(Long.toString(flushId).getBytes(Constants.UTF8)));
    
    update(credentials, zooLock, m);


  }

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  }
  
  public static void updateTabletFlushID(KeyExtent extent, long flushID, TCredentials credentials, ZooLock zooLock) {
    if (!extent.isRootTablet()) {
      Mutation m = new Mutation(extent.getMetadataEntry());
      Constants.METADATA_FLUSH_COLUMN.put(m, new Value(Long.toString(flushID).getBytes(Constants.UTF8)));
      update(credentials, zooLock, m);
    }
  }

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  }
  
  public static void updateTabletCompactID(KeyExtent extent, long compactID, TCredentials credentials, ZooLock zooLock) {
    if (!extent.isRootTablet()) {
      Mutation m = new Mutation(extent.getMetadataEntry());
      Constants.METADATA_COMPACT_COLUMN.put(m, new Value(Long.toString(compactID).getBytes(Constants.UTF8)));
      update(credentials, zooLock, m);
    }
  }

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    Mutation m = new Mutation(extent.getMetadataEntry());
    byte[] tidBytes = Long.toString(tid).getBytes(Constants.UTF8);
    
    for (Entry<String,DataFileValue> entry : estSizes.entrySet()) {
      Text file = new Text(entry.getKey());
      m.put(Constants.METADATA_DATAFILE_COLUMN_FAMILY, file, new Value(entry.getValue().encode()));
      m.put(Constants.METADATA_BULKFILE_COLUMN_FAMILY, file, new Value(tidBytes));
    }
    Constants.METADATA_TIME_COLUMN.put(m, new Value(time.getBytes(Constants.UTF8)));
    update(credentials, zooLock, m);
  }

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org.apache.accumulo.core.client.mapreduce.AccumuloInputFormatTest

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