Examples of org.apache.cassandra.thrift.ColumnOrSuperColumn$ColumnOrSuperColumnStandardSchemeFactory

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. If the query was on a counter column family, you will either get a counter_column (instead of a column) or a counter_super_column (instead of a super_column) @param column. The Column returned by get() or get_slice(). @param super_column. The SuperColumn returned by get() or get_slice(). @param counter_column. The Counterolumn returned by get() or get_slice(). @param counter_super_column. The CounterSuperColumn returned by get() or get_slice().


    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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  public CounterColumn getCounter(final ByteBuffer key, final ColumnPath columnPath) throws HectorException {
    Operation<CounterColumn> op = new Operation<CounterColumn>(OperationType.READ, failoverPolicy, keyspaceName, credentials) {


        @Override
        public CounterColumn 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.getCounter_column();
        }


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

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  }
  
  private void applyToRow(List<ColumnOrSuperColumn> cosclist) {
    superColumns = new ArrayList<SN>(cosclist.size());
    for (Iterator<ColumnOrSuperColumn> iterator = cosclist.iterator(); iterator.hasNext();) {
      ColumnOrSuperColumn cosc = iterator.next();
      SN sColName = sNameSerializer.fromByteBuffer(cosc.super_column.name);
      log.debug("cosc {}", cosc.super_column);
       
      superColumns.add(sColName);
      Iterator<Column> tcolumns = cosc.getSuper_column().getColumnsIterator();
      Map<N,HColumn<N,ByteBuffer>> subColMap = new LinkedHashMap<N, HColumn<N,ByteBuffer>>();
      while ( tcolumns.hasNext() ) {
        Column col = tcolumns.next();
        subColMap.put(columnNameSerializer.fromByteBuffer(col.name), new HColumnImpl<N, ByteBuffer>(col, columnNameSerializer, ByteBufferSerializer.get()));
      }

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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 a 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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  /**
   * Add a ColumnCounter insertion (or update)
   */
  public BatchMutation<K> addCounterInsertion(K key, List<String> columnFamilies, CounterColumn counterColumn) {
    Mutation mutation = new Mutation();
    mutation.setColumn_or_supercolumn(new ColumnOrSuperColumn().setCounter_column(counterColumn));
    addMutation(key, columnFamilies, mutation);
    return this;
  }

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   * Add a SuperColumnCounter insertion (or update)
   */
  public BatchMutation<K> addSuperCounterInsertion(K key, List<String> columnFamilies, 
      CounterSuperColumn counterSuperColumn) {
    Mutation mutation = new Mutation();
    mutation.setColumn_or_supercolumn(new ColumnOrSuperColumn().setCounter_super_column(counterSuperColumn));
    addMutation(key, columnFamilies, mutation);
    return this;
  }

View Full Code Here

  
  private void applyToRow(K key, List<ColumnOrSuperColumn> cosclist) {
    HColumn<N, ByteBuffer> column;
    N colName;
    for (Iterator<ColumnOrSuperColumn> iterator = cosclist.iterator(); iterator.hasNext();) {
      ColumnOrSuperColumn cosc = iterator.next();            


      colName = columnNameSerializer.fromByteBuffer(cosc.getColumn().name.duplicate());
      column = columns.get(colName);
      
      if ( column == null ) {
        column = new HColumnImpl<N, ByteBuffer>(cosc.getColumn(), columnNameSerializer, ByteBufferSerializer.get());
      } else {
        ((HColumnImpl<N, ByteBuffer>)column).apply(cosc.getColumn());
      }
      columns.put(colName, column); 
      iterator.remove();
    }
  }

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  private void applyToRow(List<ColumnOrSuperColumn> cosclist) {
    hasEntries = cosclist.size() > 0;
    for (Iterator<ColumnOrSuperColumn> iterator = cosclist.iterator(); iterator.hasNext();) {
      ColumnOrSuperColumn cosc = iterator.next();            
      if ( cosc.isSetSuper_column() ) {
        applySuper(cosc);
      } else {
        applyStandard(cosc.getColumn());        
      }
       
      iterator.remove();
    }
  }

View Full Code Here

        // insert
        client.insert("Keyspace1", key_user_id, cp, "Ran".getBytes("UTF-8"),
                timestamp, ConsistencyLevel.ONE);


        // read
        ColumnOrSuperColumn got = client.get("Keyspace1", key_user_id, cp,
                ConsistencyLevel.ONE);


        // assert
        assertNotNull("Got a null ColumnOrSuperColumn", got);
        assertEquals("Ran", new String(got.getColumn().getValue(), "utf-8"));
    }

View Full Code Here

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