/**
* Use a script execution to create an atomic put-if-absent operation that fulfills the contract
* of {@link Map#putIfAbsent(Object, Object)}
*/
@Test
public void complexScriptExecutionSimulatingPutIfAbsent() {
Customer ned = new Customer("Ned", "Stark");
ned.setId("ned-stark");
// #1: on first insert null has to be returned
assertThat(operations.scriptOps().execute(createExecutablePutIfAbsentScript(ned)), nullValue());
// #2: change the firstname and put the object again, we expect a return value.
ned.setFirstname("Eddard");
assertThat(
operations.scriptOps().execute(createExecutablePutIfAbsentScript(ned)), notNullValue());
// #3: make sure the entity has not been altered by #2
assertThat(repository.findOne(ned.getId()).getFirstname(), is("Ned"));
assertThat(repository.count(), is(1L));
}
@Before
public void setUp() {
if (!operations.collectionExists(Customer.class)) {
operations.createCollection(Customer.class);
}
// just make sure we remove everything properly
operations.getCollection("system.js").remove(new BasicDBObject());
repository.deleteAll();
}
