Examples of org.apache.cassandra.thrift.Column

org.apache.cassandra.thrift.Column
Basic unit of data within a ColumnFamily. @param name, the name by which this column is set and retrieved. Maximum 64KB long. @param value. The data associated with the name. Maximum 2GB long, but in practice you should limit it to small numbers of MB (since Thrift must read the full value into memory to operate on it). @param timestamp. The timestamp is used for conflict detection/resolution when two columns with same name need to be compared. @param ttl. An optional, positive delay (in seconds) after which the column will be automatically deleted.

    ColumnPath sta1 = new ColumnPath("Standard1");
    sta1.setColumn(bytes("deleteThroughInserBatch_col"));


    keyspace.insert("deleteThroughInserBatch_key", sta1, StringSerializer.get().toByteBuffer("deleteThroughInserBatch_val"));


    Column found = keyspace.getColumn("deleteThroughInserBatch_key", sta1);
    assertNotNull(found);


    BatchMutation<String> batchMutation = new BatchMutation<String>(StringSerializer.get());
    List<String> columnFamilies = Arrays.asList("Standard1");
    for (int i = 0; i < 10; i++) {


      for (int j = 0; j < 10; j++) {
        Column col = new Column(StringSerializer.get().toByteBuffer("testBatchMutateColumn_" + j),
            StringSerializer.get().toByteBuffer("testBatchMutateColumn_value_" + j), connectionManager.createClock());
        batchMutation.addInsertion("testBatchMutateColumn_" + i, columnFamilies, col);
      }
    }
    SlicePredicate slicePredicate = new SlicePredicate();
    slicePredicate.addToColumn_names(StringSerializer.get().toByteBuffer("deleteThroughInserBatch_col"));


    Deletion deletion = new Deletion(connectionManager.createClock());
    deletion.setPredicate(slicePredicate);


    batchMutation.addDeletion("deleteThroughInserBatch_key", columnFamilies, deletion);
    keyspace.batchMutate(batchMutation);
    try {
      keyspace.getColumn("deleteThroughInserBatch_key", sta1);
      fail("Should not have found a value here");
    } catch (Exception e) {
    }
    // get value
    for (int i = 0; i < 10; i++) {
      for (int j = 0; j < 10; j++) {
        ColumnPath cp = new ColumnPath("Standard1");
        cp.setColumn(bytes("testBatchMutateColumn_" + j));


        Column col = keyspace.getColumn("testBatchMutateColumn_" + i, cp);
        assertNotNull(col);
        String value = string(col.getValue());
        assertEquals("testBatchMutateColumn_value_" + j, value);


      }
    }
  }

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//    valideColumnPath(columnPath);
      ColumnParent columnParent = new ColumnParent(columnPath.getColumn_family());
      if (columnPath.isSetSuper_column()) {
        columnParent.setSuper_column(columnPath.getSuper_column());
      }
      Column column = new Column(ByteBuffer.wrap(columnPath.getColumn()), value, connectionManager.createClock());
      insert(StringSerializer.get().toByteBuffer(key), columnParent, column);
  }

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//    valideColumnPath(columnPath);
      ColumnParent columnParent = new ColumnParent(columnPath.getColumn_family());
      if (columnPath.isSetSuper_column()) {
      columnParent.setSuper_column(columnPath.getSuper_column());
    }
      Column column = new Column(ByteBuffer.wrap(columnPath.getColumn()), value, timestamp);
      insert(StringSerializer.get().toByteBuffer(key), columnParent, column);
  }

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            // preserve comparator order
            for (IColumn c : row.cf.getSortedColumns())
            {
                if (c.isMarkedForDelete())
                    continue;
                thriftColumns.add(new Column(c.name()).setValue(c.value()).setTimestamp(c.timestamp()));
            }
        }
        else
        {
            // order columns in the order they were asked for
            for (Term term : select.getColumnNames())
            {
                ByteBuffer name;
                try
                {
                    name = term.getByteBuffer(comparator);
                }
                catch (InvalidRequestException e)
                {
                    throw new AssertionError(e);
                }
                IColumn c = row.cf.getColumn(name);
                if (c == null || c.isMarkedForDelete())
                    thriftColumns.add(new Column().setName(name));
                else
                    thriftColumns.add(new Column(c.name()).setValue(c.value()).setTimestamp(c.timestamp()));
            }
        }
        return thriftColumns;
    }

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                              new String(row.array()), StringUtils.join(endpoints, ","), firstEndpoint);


            // now, read the row back directly from the host owning the row locally
            tester.setup(firstEndpoint.getHostAddress(), DatabaseDescriptor.getRpcPort());
            tester.thriftClient.set_keyspace(keyspace);
            tester.thriftClient.insert(row, parent, new Column(ByteBufferUtil.bytes("col1"), ByteBufferUtil.bytes("val1"), 1), ConsistencyLevel.ONE);
            Column column = tester.thriftClient.get(row, col, ConsistencyLevel.ONE).column;
            System.out.println("read row " + new String(row.array()) + " " + new String(column.name.array()) + ":" + new String(column.value.array()) + ":" + column.timestamp);
        }


        System.exit(1);
    }

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                    ByteBuffer countBytes = ByteBufferUtil.bytes("count");
                    result.schema = new CqlMetadata(Collections.<ByteBuffer, String>emptyMap(),
                                                    Collections.<ByteBuffer, String>emptyMap(),
                                                    "AsciiType",
                                                    "LongType");
                    List<Column> columns = Collections.singletonList(new Column(countBytes).setValue(ByteBufferUtil.bytes((long) rows.size())));
                    result.rows = Collections.singletonList(new CqlRow(countBytes, columns));
                    return result;
                }


                // otherwise create resultset from query results
                result.schema = new CqlMetadata(new HashMap<ByteBuffer, String>(),
                                                new HashMap<ByteBuffer, String>(),
                                                TypeParser.getShortName(metadata.comparator),
                                                TypeParser.getShortName(metadata.getDefaultValidator()));
                List<CqlRow> cqlRows = new ArrayList<CqlRow>(rows.size());
                for (org.apache.cassandra.db.Row row : rows)
                {
                    List<Column> thriftColumns = new ArrayList<Column>();
                    if (select.isColumnRange())
                    {
                        if (select.isFullWildcard())
                        {
                            // prepend key
                            ByteBuffer keyName = ByteBufferUtil.bytes(metadata.getCQL2KeyName());
                            thriftColumns.add(new Column(keyName).setValue(row.key.key).setTimestamp(-1));
                            result.schema.name_types.put(keyName, TypeParser.getShortName(AsciiType.instance));
                            result.schema.value_types.put(keyName, TypeParser.getShortName(metadata.getKeyValidator()));
                        }


                        // preserve comparator order
                        if (row.cf != null)
                        {
                            for (org.apache.cassandra.db.Column c : row.cf.getSortedColumns())
                            {
                                if (c.isMarkedForDelete(now))
                                    continue;


                                ColumnDefinition cd = metadata.getColumnDefinitionFromColumnName(c.name());
                                if (cd != null)
                                    result.schema.value_types.put(c.name(), TypeParser.getShortName(cd.getValidator()));


                                thriftColumns.add(thriftify(c));
                            }
                        }
                    }
                    else
                    {
                        String keyString = metadata.getCQL2KeyName();


                        // order columns in the order they were asked for
                        for (Term term : select.getColumnNames())
                        {
                            if (term.getText().equalsIgnoreCase(keyString))
                            {
                                // preserve case of key as it was requested
                                ByteBuffer requestedKey = ByteBufferUtil.bytes(term.getText());
                                thriftColumns.add(new Column(requestedKey).setValue(row.key.key).setTimestamp(-1));
                                result.schema.name_types.put(requestedKey, TypeParser.getShortName(AsciiType.instance));
                                result.schema.value_types.put(requestedKey, TypeParser.getShortName(metadata.getKeyValidator()));
                                continue;
                            }


                            if (row.cf == null)
                                continue;


                            ByteBuffer name;
                            try
                            {
                                name = term.getByteBuffer(metadata.comparator, variables);
                            }
                            catch (InvalidRequestException e)
                            {
                                throw new AssertionError(e);
                            }


                            ColumnDefinition cd = metadata.getColumnDefinitionFromColumnName(name);
                            if (cd != null)
                                result.schema.value_types.put(name, TypeParser.getShortName(cd.getValidator()));
                            org.apache.cassandra.db.Column c = row.cf.getColumn(name);
                            if (c == null || c.isMarkedForDelete(now))
                                thriftColumns.add(new Column().setName(name));
                            else
                                thriftColumns.add(thriftify(c));
                        }
                    }

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    private static Column thriftify(org.apache.cassandra.db.Column c)
    {
        ByteBuffer value = (c instanceof CounterColumn)
                           ? ByteBufferUtil.bytes(CounterContext.instance().total(c.value()))
                           : c.value();
        return new Column(c.name()).setValue(value).setTimestamp(c.timestamp());
    }

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        for (List<ByteBuffer> row : rows)
        {
            List<Column> thriftCols = new ArrayList<Column>(metadata.names.size());
            for (int i = 0; i < metadata.names.size(); i++)
            {
                Column col = new Column(ByteBufferUtil.bytes(metadata.names.get(i).toString()));
                col.setValue(row.get(i));
                thriftCols.add(col);
            }
            // The key of CqlRow shoudn't be needed in CQL3
            cqlRows.add(new CqlRow(ByteBufferUtil.EMPTY_BYTE_BUFFER, thriftCols));
        }

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        if (select.isColumnRange())
        {
            if (select.isWildcard())
            {
                // prepend key
                thriftColumns.add(new Column(metadata.getKeyName()).setValue(row.key.key).setTimestamp(-1));
            }


            // preserve comparator order
            for (IColumn c : row.cf.getSortedColumns())
            {
                if (c.isMarkedForDelete())
                    continue;
                thriftColumns.add(thriftify(c));
            }
        }
        else
        {
            String keyString = getKeyString(metadata);


            // order columns in the order they were asked for
            for (Term term : select.getColumnNames())
            {
                if (term.getText().equalsIgnoreCase(keyString))
                {
                    // preserve case of key as it was requested
                    ByteBuffer requestedKey = ByteBufferUtil.bytes(term.getText());
                    thriftColumns.add(new Column(requestedKey).setValue(row.key.key).setTimestamp(-1));
                    continue;
                }


                ByteBuffer name;
                try
                {
                    name = term.getByteBuffer(metadata.comparator);
                }
                catch (InvalidRequestException e)
                {
                    throw new AssertionError(e);
                }


                IColumn c = row.cf.getColumn(name);
                if (c == null || c.isMarkedForDelete())
                    thriftColumns.add(new Column().setName(name));
                else
                    thriftColumns.add(thriftify(c));
            }
        }
        return thriftColumns;

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    private static Column thriftify(IColumn c)
    {
        ByteBuffer value = (c instanceof CounterColumn)
                           ? ByteBufferUtil.bytes(CounterContext.instance().total(c.value()))
                           : c.value();
        return new Column(c.name()).setValue(value).setTimestamp(c.timestamp());
    }

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