Examples of org.apache.cassandra.thrift.ColumnOrSuperColumn

org.apache.cassandra.thrift.ColumnOrSuperColumn
Methods for fetching rows/records from Cassandra will return either a single instance of ColumnOrSuperColumn or a list of ColumnOrSuperColumns (get_slice()). If you're looking up a SuperColumn (or list of SuperColumns) then the resulting instances of ColumnOrSuperColumn will have the requested SuperColumn in the attribute super_column. For queries resulting in Columns, those values will be in the attribute column. This change was made between 0.3 and 0.4 to standardize on single query methods that may return either a SuperColumn or Column. @param column. The Column returned by get() or get_slice(). @param super_column. The SuperColumn returned by get() or get_slice().

      ArrayList<Mutation> mutations = new ArrayList<Mutation>(10);
      for (int j = 0; j < 10; j++) {
        Column col = new Column(StringSerializer.get().toByteBuffer("testBatchMutateColumn_" + j),
            StringSerializer.get().toByteBuffer("testBatchMutateColumn_value_" + j), connectionManager.createClock());
        //list.add(col);
        ColumnOrSuperColumn cosc = new ColumnOrSuperColumn();
        cosc.setColumn(col);
        Mutation mutation = new Mutation();
        mutation.setColumn_or_supercolumn(cosc);
        mutations.add(mutation);
      }
      mutationMap.put("Standard1", mutations);

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    Operation<Column> op = new Operation<Column>(OperationType.READ, failoverPolicy, keyspaceName, credentials) {


      @Override
      public Column execute(Cassandra.Client cassandra) throws HectorException {
        ColumnOrSuperColumn cosc;
        try {
          cosc = cassandra.get(key, columnPath, getThriftCl(OperationType.READ));
        } catch (NotFoundException e) {
          setException(xtrans.translate(e));
          return null;
        } catch (Exception e) {
          throw xtrans.translate(e);
        }
        return cosc == null ? null : cosc.getColumn();
      }


    };
    operateWithFailover(op);
    if (op.hasException()) {

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   * Add an Column insertion (or update) to the batch mutation request.
   */
  public BatchMutation<K> addInsertion(K key, List<String> columnFamilies,
      Column column) {
    Mutation mutation = new Mutation();
    mutation.setColumn_or_supercolumn(new ColumnOrSuperColumn().setColumn(column));
    addMutation(key, columnFamilies, mutation);
    return this;
  }

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   * Add an SuperColumn insertion (or update) to the batch mutation request.
   */
  public BatchMutation<K> addSuperInsertion(K key, List<String> columnFamilies,
      SuperColumn superColumn) {
    Mutation mutation = new Mutation();
    mutation.setColumn_or_supercolumn(new ColumnOrSuperColumn().setSuper_column(superColumn));
    addMutation(key, columnFamilies, mutation);
    return this;
  }

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        ByteBuffer key_user_id = ByteBufferUtil.bytes(key);
        ColumnPath cp = new ColumnPath(cf);
        cp.column = ByteBufferUtil.bytes(colName);


        // read
        ColumnOrSuperColumn got = client.get(key_user_id, cp, ConsistencyLevel.ONE);
        return parseType(validator).getString(got.getColumn().value);
    }

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  public Mutate put(String columnFamily, String columnName,
      byte[] value, long timestamp) {


    Mutation mutation = new Mutation();
    ColumnOrSuperColumn csc = new ColumnOrSuperColumn();
    csc.column = new Column(ByteUtils.toBytes(columnName), value, timestamp);
    mutation.setColumn_or_supercolumn(csc);
    addToMutationMap(columnFamily, mutation);


    return this;

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  public Mutate put(String superColumnFamily, String superColumnName,
      String columnName, byte[] value, long timestamp) {


    Mutation mutation = new Mutation();
    ColumnOrSuperColumn csc = new ColumnOrSuperColumn();
    csc.super_column = new SuperColumn();
    csc.super_column.name = ByteUtils.toBytes(superColumnName);
    // TODO: This will probably be slow. Try to group all columns
    // under a supercolumn within a single mutation object
    csc.super_column.addToColumns(

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        ByteBuffer key_user_id = ByteBufferUtil.bytes(key);
        ColumnPath cp = new ColumnPath(cf);
        cp.column = ByteBufferUtil.bytes(colName);


        // read
        ColumnOrSuperColumn got = client.get(key_user_id, cp, ConsistencyLevel.ONE);
        return parseType(validator).getString(got.getColumn().value);
    }

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                       mutation.deletion.setTimestamp(System.currentTimeMillis() * 1000);
                   }
                   else
                   {
                       sc.columns = columns;
                       mutation.column_or_supercolumn = new ColumnOrSuperColumn();
                       mutation.column_or_supercolumn.super_column = sc;
                   }
               }
               else // assume column since it couldn't be anything else
               {
                   if (pair.get(1) == null)
                   {
                       mutation.deletion = new Deletion();
                       mutation.deletion.predicate = new org.apache.cassandra.thrift.SlicePredicate();
                       mutation.deletion.predicate.column_names = Arrays.asList(objToBB(pair.get(0)));
                       mutation.deletion.setTimestamp(System.currentTimeMillis() * 1000);
                   }
                   else
                   {
                       org.apache.cassandra.thrift.Column column = new org.apache.cassandra.thrift.Column();
                       column.name = marshallers.get(0).decompose((pair.get(0)));
                       if (validators.get(column.name) == null)
                           // Have to special case BytesType to convert DataByteArray into ByteBuffer
                           if (marshallers.get(1) instanceof BytesType)
                               column.value = objToBB(pair.get(1));
                           else
                               column.value = marshallers.get(1).decompose(pair.get(1));
                       else
                           column.value = validators.get(column.name).decompose(pair.get(1));
                       column.setTimestamp(System.currentTimeMillis() * 1000);
                       mutation.column_or_supercolumn = new ColumnOrSuperColumn();
                       mutation.column_or_supercolumn.column = column;
                   }
               }
               mutationList.add(mutation);
            }

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        {
            org.apache.cassandra.thrift.Column column = new org.apache.cassandra.thrift.Column();
            column.setName(objToBB(t.get(0)));
            column.setValue(objToBB(t.get(1)));
            column.setTimestamp(FBUtilities.timestampMicros());
            mutation.column_or_supercolumn = new ColumnOrSuperColumn();
            mutation.column_or_supercolumn.column = column;
        }
        return mutation;
    }

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