How to use

Key$Builder

in

org.kitesdk.data

@Override
public int run(String[] args) throws Exception {
 // Load the users dataset
 // Dataset is named [table].[entity]
 RandomAccessDataset<User> users = Datasets.load(
   "dataset:hbase:quickstart.cloudera/users.User", User.class);
 // Get an accessor for the dataset and look up a user by username
 Key key = new Key.Builder(users).add("username", "bill").build();
 System.out.println(users.get(key));
 System.out.println("----");
 // Get a reader for the dataset and read the users from "bill" onwards
 DatasetReader<User> reader = null;
 try {
  reader = users.with("username", "bill").newReader();
  for (User user : reader) {
   System.out.println(user);
  }
 } finally {
  if (reader != null) {
   reader.close();
  }
 }
 return 0;
}

/**
 * Build an instance of the configured key.
 *
 * @throws IllegalStateException If any required key field is missing.
 */
@SuppressWarnings("unchecked")
public Key build() {
 final List<FieldPartitioner> partitioners = strategy.getFieldPartitioners();
 final List<Object> content = Lists.newArrayListWithCapacity(partitioners.size());
 for (FieldPartitioner fp : partitioners) {
  content.add(valueFor(fp));
 }
 return new Key(content);
}

Key key = new Key.Builder(ds)
  .add("part1", "part1_" + iStr)
  .add("part2", "part2_" + iStr).build();
compareEntitiesWithUtf8(0, ds.get(key));

Key key = new Key.Builder(ds).add("part1", "1").add("part2", "1").build();
Map<String, SpecificRecord> returnedCompositeEntity = ds.get(key);
assertNotNull("found entity", returnedCompositeEntity);
compositeEntity.put("SubEntity1", subEntity1);
ds.put(compositeEntity);
returnedCompositeEntity = ds.get(new Key.Builder(ds).add("part1", "1").add("part2", "2").build());
assertNull(returnedCompositeEntity.get("SubEntity2"));

Key key = new Key.Builder(userProfileActionsDataset)
  .add("firstName", firstName)
  .add("lastName", lastName)
  .build();

Key key = new Key.Builder(userProfileActionsDataset)
  .add("firstName", firstName)
  .add("lastName", lastName)
  .build();

 Key key = new Key.Builder(ds)
   .add("part1", "part1_" + iStr)
   .add("part2", "part2_" + iStr).build();
 compareEntitiesWithString(i, ds.get(key));
Key key = new Key.Builder(ds)
  .add("part1", "part1_5")
  .add("part2", "part2_5").build();

 Key key = new Key.Builder(ds)
   .add("part1", new Utf8("part1_" + iStr))
   .add("part2", new Utf8("part2_" + iStr)).build();
 compareEntitiesWithUtf8(i, ds.get(key));
Key key = new Key.Builder(ds)
  .add("part1", new Utf8("part1_5"))
  .add("part2", new Utf8("part2_5")).build();