Examples of com.datastax.driver.core.ColumnDefinitions

com.datastax.driver.core.ColumnDefinitions
Metadata describing the columns returned in a {@link ResultSet} or a{@link PreparedStatement}.
A {@code columnDefinitions}} instance is mainly a list of {@code ColumnsDefinitions.Definition}. The definitions or metadata for a column can be accessed either by:
- index (indexed from 0)
- name
When accessed by name, column selection is case insensitive. In case multiple columns only differ by the case of their name, then the column returned with be the first column that has been defined in CQL without forcing case sensitivity (that is, it has either been defined without quotes or is fully lowercase). If none of the columns have been defined in this manner, the first column matching (with case insensitivity) is returned. You can force the case of a selection by double quoting the name.
For example:
- If {@code cd} contains column {@code fOO}, then {@code cd.contains("foo")}, {@code cd.contains("fOO")} and {@code cd.contains("Foo")} will return {@code true}.
- If {@code cd} contains both {@code foo} and {@code FOO} then:
  - {@code cd.getType("foo")}, {@code cd.getType("fOO")} and {@code cd.getType("FOO")}will all match column {@code foo}.
  - {@code cd.getType("\"FOO\"")} will match column {@code FOO}
Note that the preceding rules mean that if a {@code ColumnDefinitions} objectcontains multiple occurrences of the exact same name (be it the same column multiple times or columns from different tables with the same name), you will have to use selection by index to disambiguate.

  }


  private CqlRowMetadata extractRowMetadata(Row row, Map<String, CqlColumnType> typeMap) {


    // collect and count all columns
    ColumnDefinitions definitions = row.getColumnDefinitions();
    ImmutableList.Builder<CqlExtendedColumnName> columnsBuild = ImmutableList.builder();
    CqlPartitionKey partitionKey = null;
    for (int colIndex = 0; colIndex < definitions.size(); colIndex++) {
      if (colIndex > config.cassandra.columnsLimit) {
        LOG.debug("Reached columns limit: {}", config.cassandra.columnsLimit);
        break;
      }
      if (row.isNull(colIndex)) {
        continue;
      }
      DataType dataType = definitions.getType(colIndex);
      String columnNameText = definitions.getName(colIndex);
      CqlColumnType columnType = typeMap.get(columnNameText.toLowerCase());
      if (columnType == null) {
        columnType = CqlColumnType.REGULAR;
        LOG.debug("Column type not found for: {} - using regular", columnNameText);
      }

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        JsonObject response = new JsonObject();
        List<Row> rows = rs.all();
        if (!rows.isEmpty() && rows.size()==1) {
            rowStr = rows.get(0).toString();
        }
        ColumnDefinitions colDefs = rs.getColumnDefinitions();
        colStr = colDefs.toString();
        response.putString("columns", colStr.substring(8,colStr.length()-1));
        response.putString("values", rowStr.substring(4,rowStr.length()-1));
        return response.toString();
        
//        for (Row ro:rows) {

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        JsonObject response = new JsonObject();
        List<Row> rows = rs.all();
        if (!rows.isEmpty() && rows.size() == 1) {
            rowStr = rows.get(0).toString();
        }
        ColumnDefinitions colDefs = rs.getColumnDefinitions();
        colStr = colDefs.toString();
        response.putString("columns", colStr.substring(8, colStr.length() - 1));
        response.putString("values", rowStr.substring(4, rowStr.length() - 1));
        return response.toString();


    }

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        JsonObject response = new JsonObject();
        List<Row> rows = rs.all();
        if (!rows.isEmpty() && rows.size() == 1) {
            rowStr = rows.get(0).toString();
        }
        ColumnDefinitions colDefs = rs.getColumnDefinitions();
        colStr = colDefs.toString();
        response.putString("columns", colStr.substring(8, colStr.length() - 1));
        response.putString("values", rowStr.substring(4, rowStr.length() - 1));
        return response.toString();
    }

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        JsonObject response = new JsonObject();
        List<Row> rows = rs.all();
        if (!rows.isEmpty() && rows.size() == 1) {
            rowStr = rows.get(0).toString();
        }
        ColumnDefinitions colDefs = rs.getColumnDefinitions();
        colStr = colDefs.toString();
        response.putString("columns", colStr.substring(8, colStr.length() - 1));
        response.putString("values", rowStr.substring(4, rowStr.length() - 1));
        return response.toString();
    }

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  /**
   * @param row
   * @return
   */
  protected Object firstColumnToObject(Row row) {
    ColumnDefinitions cols = row.getColumnDefinitions();
    if (cols.size() == 0) {
      return null;
    }
    return cols.getType(0).deserialize(row.getBytesUnsafe(0));
  }

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  protected Map<String, Object> toMap(Row row) {
    if (row == null) {
      return null;
    }


    ColumnDefinitions cols = row.getColumnDefinitions();
    Map<String, Object> map = new HashMap<String, Object>(cols.size());


    for (Definition def : cols.asList()) {
      String name = def.getName();
      map.put(name, def.getType().deserialize(row.getBytesUnsafe(name)));
    }


    return map;

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    if (row == null) {
      return null;
    }


    ColumnDefinitions cols = row.getColumnDefinitions();
    List<Object> list = new ArrayList<Object>(cols.size());


    for (Definition def : cols.asList()) {
      String name = def.getName();
      list.add(row.isNull(name) ? null : def.getType().deserialize(row.getBytesUnsafe(name)));
    }


    return list;

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    if (row == null) {
      return null;
    }


    ColumnDefinitions cols = row.getColumnDefinitions();
    Map<String, Object> map = new HashMap<String, Object>(cols.size());


    for (Definition def : cols.asList()) {


      String name = def.getName();
      map.put(name, row.isNull(name) ? null : def.getType().deserialize(row.getBytesUnsafe(name)));
    }

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    return result;
  }


    public TypedMap mapRow(Row row) {
    log.trace("Map CQL row to a map of <ColumnName,Value>");
    ColumnDefinitions columnDefinitions = row.getColumnDefinitions();
        Validator.validateNotNull(columnDefinitions,"Impossible to fetch column definitions for the row '%s'", row);
        TypedMap line = new TypedMap();
        for (Definition column : columnDefinitions) {
            line.put(column.getName(), mapColumn(row, column));
        }

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