Database Reference
In-Depth Information
SlicePredicate predicate = new SlicePredicate();
List<byte[]> colNames = new ArrayList<byte[]>();
colNames.add("a".getBytes());
colNames.add("b".getBytes());
predicate.column_names = colNames;
ColumnParent parent = new ColumnParent("Standard1");
KeyRange keyRange = new KeyRange();
keyRange.start_key = "k1".getBytes();
keyRange.end_key = "k2".getBytes();
//a key slice is returned
List<KeySlice> results =
client.get_range_slices(parent, predicate, keyRange,
ConsistencyLevel.ONE);
for (KeySlice keySlice : results) {
List<ColumnOrSuperColumn> cosc = keySlice.getColumns();
System.out.println("Current row: " +
new String(keySlice.getKey()));
for (int i = 0; i < cosc.size(); i++) {
Column c = cosc.get(i).getColumn();
System.out.println(new String(c.name, "UTF-8") + " : "
+ new String(c.value, "UTF-8"));
}
}
conn.close();
System.out.println("All done.");
}
}
NOTE
This program assumes that you've added a few values for a few different row keys to work with, as
shown in
Seeding Some Values
.
The program outputs the following:
