Sample Application - Cassandra: The Definitive Guide - page 77

columnsToAdd.add(columns);
String superCFName = "PointOfInterest";
ColumnPath cp = new ColumnPath();
cp.column_family = superCFName;
cp.setSuper_column(WALDORF_NAME.getBytes());
cp.setSuper_columnIsSet(true);
innerMap.put(superCFName, columnsToAdd);
outerMap.put(keyName.getBytes(), innerMap);
client.batch_mutate(outerMap, CL);
LOG.debug("Done inserting Central Park.");
}
private void insertPOIEmpireState() 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 esbName = "Empire State Building";
Column descCol = new Column("desc".getBytes(UTF8),
"Great view from 102nd
floor.".getBytes("UTF-8"), clock);
Column phoneCol = new Column("phone".getBytes(UTF8),
"212-777-7777".getBytes(UTF8), clock);
List<Column> esbCols = new ArrayList<Column>();
esbCols.add(descCol);
esbCols.add(phoneCol);
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 = esbCols;
descCosc.super_column = waldorfSC;