/**
* Store and call an arbitrary JavaScript function (in this case a simple echo script) via its
* name.
*/
@Test
public void saveAndCallScriptViaName() {
operations
.scriptOps()
.register(
new NamedMongoScript(
"echoScript", new ExecutableMongoScript("function(x) { return x; }")));
Object o = operations.scriptOps().call("echoScript", "Hello echo...!");
assertThat(o, is((Object) "Hello echo...!"));
}
/**
* 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));
}
