Java Code Examples for java8.util.Optional#get()

private Flowable<Loadable<Project>> loadProject(Optional<String> projectId) {
  // Empty id indicates intent to deactivate the current project. Used on sign out.
  if (projectId.isEmpty()) {
    return Flowable.just(Loadable.notLoaded());
  }
  String id = projectId.get();

  return syncProjectWithRemote(id)
      .doOnSubscribe(__ -> Log.d(TAG, "Activating project " + id))
      .doOnError(err -> Log.d(TAG, "Error loading project from remote", err))
      .onErrorResumeNext(
          __ ->
              localDataStore
                  .getProjectById(id)
                  .toSingle()
                  .doOnError(err -> Log.d(TAG, "Error loading project from local db", err)))
      .doOnSuccess(__ -> localValueStore.setLastActiveProjectId(id))
      .toFlowable()
      .compose(Loadable::loadingOnceAndWrap);
}
 

@Override
public FerryEntrance ferryAtPosition(ShortPoint2D position, byte playerId) {
	Optional<ILogicMovable> ferryOptional = HexGridArea.stream(position.x, position.y, 0, Constants.MAX_FERRY_ENTRANCE_SEARCH_DISTANCE)
													   .filterBounds(width, height)
													   .filter((x, y) -> landscapeGrid.getLandscapeTypeAt(x, y).isWater())
													   .iterateForResult((x, y) -> {
														   ILogicMovable movable = movableGrid.getMovableAt(x, y);
														   return Optional.ofNullable(movable).filter(m -> m.getMovableType() == EMovableType.FERRY);
													   });

	if (!ferryOptional.isPresent()) {
		return null;
	}

	ILogicMovable ferry = ferryOptional.get();
	ShortPoint2D ferryPosition = ferry.getPosition();
	Optional<ShortPoint2D> entranceOptional = HexGridArea.stream(ferryPosition.x, ferryPosition.y, 0, Constants.MAX_FERRY_ENTRANCE_SEARCH_DISTANCE)
														 .filterBounds(width, height)
														 .filter((x, y) -> !isBlocked(x, y))
														 .getFirst();

	if (!entranceOptional.isPresent()) {
		return null;
	}

	return new FerryEntrance(ferry, entranceOptional.get());
}
 

private MapResourceInfo findAndDecryptFilePartSafe(EOriginalMapFilePartType partType) throws MapLoadException {
	Optional<MapResourceInfo> filePart = findAndDecryptFilePart(partType);
	if (filePart.isPresent()) {
		return filePart.get();
	} else {
		throw new MapLoadException("No " + partType + " information available in mapfile!");
	}
}
 

void readStacks() throws MapLoadException {
	Optional<MapResourceInfo> filePartOptional = findAndDecryptFilePart(EOriginalMapFilePartType.STACKS);

	if (filePartOptional.isPresent()) {
		MapResourceInfo filePart = filePartOptional.get();
		// - file position
		int pos = filePart.offset;

		// - Number of buildings
		int stackCount = readBEIntFrom(pos);
		pos += 4;

		// - safety check
		if ((stackCount * 8 > filePart.size) || (stackCount < 0)) {
			throw new MapLoadException("wrong number of stacks in map File: " + stackCount);
		}

		// - read all Stacks
		for (int i = 0; i < stackCount; i++) {

			int posX = readBEWordFrom(pos);
			pos += 2;
			int posY = readBEWordFrom(pos);
			pos += 2;

			int stackType = readByteFrom(pos++);
			int count = readByteFrom(pos++);

			pos += 2; // not used - maybe: padding to size of 8 (2 INTs)

			// -------------
			// - update data
			mapData.setStack(posX, posY, stackType, count);
		}
	}
}
 

void readSettlers() throws MapLoadException {
	Optional<MapResourceInfo> filePartOptional = findAndDecryptFilePart(EOriginalMapFilePartType.SETTLERS);

	if (filePartOptional.isPresent()) {
		MapResourceInfo filePart = filePartOptional.get();
		// - file position
		int pos = filePart.offset;

		// - Number of buildings
		int settlerCount = readBEIntFrom(pos);
		pos += 4;

		// - safety check
		if ((settlerCount * 6 > filePart.size) || (settlerCount < 0)) {
			throw new MapLoadException("wrong number of settlers in map File: " + settlerCount);
		}

		// - read all Stacks
		for (int i = 0; i < settlerCount; i++) {

			int party = readByteFrom(pos++);
			int settlerType = readByteFrom(pos++);

			int posX = readBEWordFrom(pos);
			pos += 2;
			int posY = readBEWordFrom(pos);
			pos += 2;

			// -------------
			// - update data
			mapData.setSettler(posX, posY, settlerType, party);
		}
	}
}
 

@Test(expectedExceptions=NoSuchElementException.class)
public void testEmptyGet() {
    Optional<Boolean> empty = Optional.empty();

    Boolean got = empty.get();
}
 

void readBuildings() throws MapLoadException {
	hasBuildings = false;

	Optional<MapResourceInfo> filePartOptional = findAndDecryptFilePart(EOriginalMapFilePartType.BUILDINGS);

	if (filePartOptional.isPresent()) {
		MapResourceInfo filePart = filePartOptional.get();
		// - file position
		int pos = filePart.offset;

		// - Number of buildings
		int buildingsCount = readBEIntFrom(pos);
		pos += 4;

		// - safety check
		if ((buildingsCount * 12 > filePart.size) || (buildingsCount < 0)) {
			throw new MapLoadException("wrong number of buildings in map File: " + buildingsCount);
		}

		hasBuildings = true;

		// - read all Buildings
		for (int i = 0; i < buildingsCount; i++) {

			int party = readByteFrom(pos++); // - Party starts with 0
			int buildingType = readByteFrom(pos++);
			int posX = readBEWordFrom(pos);
			pos += 2;
			int posY = readBEWordFrom(pos);
			pos += 2;

			pos++; // not used - maybe a filling byte to make the record 12 Byte (= 3 INTs) long or unknown?!

			// -----------
			// - number of soldier in building is saved as 4-Bit (=Nibble):
			int countSword1 = readHighNibbleFrom(pos);
			int countSword2 = readLowNibbleFrom(pos);
			pos++;

			int countArcher2 = readHighNibbleFrom(pos);
			int countArcher3 = readLowNibbleFrom(pos);
			pos++;

			int countSword3 = readHighNibbleFrom(pos);
			int countArcher1 = readLowNibbleFrom(pos);
			pos++;

			int countSpear3 = readHighNibbleFrom(pos);
			// low nibble is a not used count
			pos++;

			int countSpear1 = readHighNibbleFrom(pos);
			int countSpear2 = readLowNibbleFrom(pos);
			pos++;

			// -------------
			// - update data
			mapData.setBuilding(posX, posY, buildingType, party, countSword1, countSword2, countSword3, countArcher1, countArcher2, countArcher3, countSpear1, countSpear2, countSpear3);
		}
	}
}