/**
* Executes Delete Operation immediately in current thread.
*
* <p>Notice: This is blocking I/O operation that should not be executed on the Main Thread, it
* can cause ANR (Activity Not Responding dialog), block the UI and drop animations frames. So
* please, call this method on some background thread. See {@link WorkerThread}.
*
* @return non-null result of Delete Operation.
*/
@SuppressWarnings("unchecked")
@WorkerThread
@NonNull
@Override
public DeleteResult executeAsBlocking() {
try {
final DeleteResolver<T> deleteResolver;
if (explicitDeleteResolver != null) {
deleteResolver = explicitDeleteResolver;
} else {
final ContentResolverTypeMapping<T> typeMapping =
storIOContentResolver.lowLevel().typeMapping((Class<T>) object.getClass());
if (typeMapping == null) {
throw new IllegalStateException(
"Object does not have type mapping: "
+ "object = "
+ object
+ ", object.class = "
+ object.getClass()
+ ", "
+ "ContentProvider was not affected by this operation, please add type mapping for this type");
}
deleteResolver = typeMapping.deleteResolver();
}
return deleteResolver.performDelete(storIOContentResolver, object);
} catch (Exception exception) {
throw new StorIOException(
"Error has occurred during Delete operation. object = " + object, exception);
}
}
@Test
public void shouldFinishTransactionIfExceptionHasOccurredBlocking() {
final StorIOSQLite storIOSQLite = mock(StorIOSQLite.class);
final StorIOSQLite.Internal internal = mock(StorIOSQLite.Internal.class);
when(storIOSQLite.internal()).thenReturn(internal);
//noinspection unchecked
final DeleteResolver<Object> deleteResolver = mock(DeleteResolver.class);
when(deleteResolver.performDelete(same(storIOSQLite), anyObject()))
.thenThrow(new IllegalStateException("test exception"));
try {
new PreparedDeleteCollectionOfObjects.Builder<Object>(
storIOSQLite, singletonList(new Object()))
.useTransaction(true)
.withDeleteResolver(deleteResolver)
.prepare()
.executeAsBlocking();
failBecauseExceptionWasNotThrown(StorIOException.class);
} catch (StorIOException expected) {
IllegalStateException cause = (IllegalStateException) expected.getCause();
assertThat(cause).hasMessage("test exception");
verify(internal).beginTransaction();
verify(internal, never()).setTransactionSuccessful();
verify(internal).endTransaction();
verify(storIOSQLite).internal();
verify(deleteResolver).performDelete(same(storIOSQLite), anyObject());
verifyNoMoreInteractions(storIOSQLite, internal, deleteResolver);
}
}
@Test
public void shouldFinishTransactionIfExceptionHasOccurredObservable() {
final StorIOSQLite storIOSQLite = mock(StorIOSQLite.class);
final StorIOSQLite.Internal internal = mock(StorIOSQLite.Internal.class);
when(storIOSQLite.internal()).thenReturn(internal);
//noinspection unchecked
final DeleteResolver<Object> deleteResolver = mock(DeleteResolver.class);
when(deleteResolver.performDelete(same(storIOSQLite), anyObject()))
.thenThrow(new IllegalStateException("test exception"));
final TestSubscriber<DeleteResults<Object>> testSubscriber =
new TestSubscriber<DeleteResults<Object>>();
new PreparedDeleteCollectionOfObjects.Builder<Object>(
storIOSQLite, singletonList(new Object()))
.useTransaction(true)
.withDeleteResolver(deleteResolver)
.prepare()
.createObservable()
.subscribe(testSubscriber);
testSubscriber.awaitTerminalEvent();
testSubscriber.assertNoValues();
testSubscriber.assertError(StorIOException.class);
//noinspection ThrowableResultOfMethodCallIgnored
StorIOException expected = (StorIOException) testSubscriber.getOnErrorEvents().get(0);
IllegalStateException cause = (IllegalStateException) expected.getCause();
assertThat(cause).hasMessage("test exception");
verify(internal).beginTransaction();
verify(internal, never()).setTransactionSuccessful();
verify(internal).endTransaction();
verify(storIOSQLite).internal();
verify(deleteResolver).performDelete(same(storIOSQLite), anyObject());
verifyNoMoreInteractions(storIOSQLite, internal, deleteResolver);
}