How to use

append

method

in

com.aerospike.client.Operation

/**
 * An atomic operation that appends a value to an existing bin value. Bin value must be a string type.
 *
 * @param fieldName Name of the bin or, if mapped Class was provided, name of the mapped field
 * @param value     Value to append to the bin value.
 */
public SingleKeyCommander<T> append(String fieldName, String value) {
  String binName = mapper != null ? mapper.getBinName(fieldName) : fieldName;
  operations.add(Operation.append(new Bin(binName, value)));
  return this;
}

@SuppressWarnings("unchecked")
@Override
public <T> T append(T objectToAppendTo, Map<String, String> values) {
  Assert.notNull(objectToAppendTo,
      "Object to append to must not be null!");
  try {
    AerospikeWriteData data = AerospikeWriteData.forWrite();
    converter.write(objectToAppendTo, data);
    Operation[] ops = new Operation[values.size() + 1];
    int x = 0;
    for (Map.Entry<String, String> entry : values.entrySet()) {
      Bin newBin = new Bin(entry.getKey(), entry.getValue());
      ops[x] = Operation.append(newBin);
      x++;
    }
    ops[x] = Operation.get();
    Record record = this.client.operate(null, data.getKey(), ops);
    return mapToEntity(data.getKey(), (Class<T>) objectToAppendTo.getClass(), record);
  }
  catch (AerospikeException o_O) {
    DataAccessException translatedException = exceptionTranslator
        .translateExceptionIfPossible(o_O);
    throw translatedException == null ? o_O : translatedException;
  }
}

@SuppressWarnings("unchecked")
@Override
public <T> T append(T objectToAppendTo, String binName, String value) {
  Assert.notNull(objectToAppendTo,
      "Object to append to must not be null!");
  try {
    AerospikeWriteData data = AerospikeWriteData.forWrite();
    converter.write(objectToAppendTo, data);
    Record record = this.client.operate(null, data.getKey(),
        Operation.append(new Bin(binName, value)),
        Operation.get(binName));
    return mapToEntity(data.getKey(), (Class<T>) objectToAppendTo.getClass(), record);
  }
  catch (AerospikeException o_O) {
    DataAccessException translatedException = exceptionTranslator
        .translateExceptionIfPossible(o_O);
    throw translatedException == null ? o_O : translatedException;
  }
}