Exemplo n.º 1
0
  /**
   * Writes out a bunch of mutations for a single column family.
   *
   * @param mutations A group of Mutations for the same keyspace and column family.
   * @return The ColumnFamilyStore that was used.
   */
  public static ColumnFamilyStore writeColumnFamily(List<Mutation> mutations) {
    IMutation first = mutations.get(0);
    String keyspaceName = first.getKeyspaceName();
    UUID cfid = first.getColumnFamilyIds().iterator().next();

    for (Mutation rm : mutations) rm.applyUnsafe();

    ColumnFamilyStore store = Keyspace.open(keyspaceName).getColumnFamilyStore(cfid);
    store.forceBlockingFlush();
    return store;
  }
Exemplo n.º 2
0
 private void removeIfPresent(Mutation m, byte[] family, byte[] qualifier) {
   Map<byte[], List<KeyValue>> familyMap = m.getFamilyMap();
   List<KeyValue> kvs = familyMap.get(family);
   if (kvs != null) {
     Iterator<KeyValue> iterator = kvs.iterator();
     while (iterator.hasNext()) {
       KeyValue kv = iterator.next();
       if (Bytes.compareTo(kv.getQualifier(), qualifier) == 0) {
         iterator.remove();
       }
     }
   }
 }
Exemplo n.º 3
0
 public static void addMutation(
     Mutation rm,
     String columnFamilyName,
     String superColumnName,
     long columnName,
     String value,
     long timestamp) {
   CellName cname =
       superColumnName == null
           ? CellNames.simpleDense(getBytes(columnName))
           : CellNames.compositeDense(ByteBufferUtil.bytes(superColumnName), getBytes(columnName));
   rm.add(columnFamilyName, cname, ByteBufferUtil.bytes(value), timestamp);
 }