Sample Application - Cassandra: The Definitive Guide - page 76

columnsToAdd.add(columns);
String superCFName = "PointOfInterest";
ColumnPath cp = new ColumnPath();
cp.column_family = superCFName;
cp.setSuper_column(cambriaName.getBytes());
cp.setSuper_columnIsSet(true);
innerMap.put(superCFName, columnsToAdd);
outerMap.put(keyName.getBytes(), innerMap);
client.batch_mutate(outerMap, CL);
LOG.debug("Done inserting Phoenix Zoo.");
}
private void insertPOICentralPark() throws Exception {
Map<byte[], Map<String, List<Mutation>>> outerMap =
new HashMap<byte[], Map<String, List<Mutation>>>();
List<Mutation> columnsToAdd = new ArrayList<Mutation>();
Clock clock = new Clock(System.nanoTime());
String keyName = "Central Park";
Column descCol = new Column("desc".getBytes(UTF8),
"Walk around in the park. It's pretty.".getBytes("UTF-8"),
clock);
//no phone column for park
List<Column> cols = new ArrayList<Column>();
cols.add(descCol);
Map<String, List<Mutation>> innerMap =
new HashMap<String, List<Mutation>>();
Mutation columns = new Mutation();
ColumnOrSuperColumn descCosc = new ColumnOrSuperColumn();
SuperColumn waldorfSC = new SuperColumn();
waldorfSC.name = WALDORF_NAME.getBytes();
waldorfSC.columns = cols;
descCosc.super_column = waldorfSC;
columns.setColumn_or_supercolumn(descCosc);