/**
* Returns the singleton application object matching the given {@code applicationClass} within
* the given {@code database}.
*/
@SuppressWarnings("unchecked")
public static <T extends Application> T getInstanceUsing(
Class<T> applicationClass, Database database) {
ObjectType type = database.getEnvironment().getTypeByClass(applicationClass);
Query<T> query =
Query.from(applicationClass).where("_type = ?", type.getId()).using(database);
T app = query.first();
if (app == null) {
DistributedLock lock =
DistributedLock.Static.getInstance(database, applicationClass.getName());
lock.lock();
try {
app = query.clone().noCache().first();
if (app == null) {
app = (T) type.createObject(null);
app.setName(type.getDisplayName());
app.saveImmediately();
return app;
}
} finally {
lock.unlock();
}
}
String oldName = app.getName();
String newName = type.getDisplayName();
if (!ObjectUtils.equals(oldName, newName)) {
app.setName(newName);
app.save();
}
return app;
}
/** Immediately refreshes all types using the backing database. */
public synchronized void refreshTypes() {
bootstrapOnce.ensure();
Database database = getDatabase();
try {
TypesCache temporaryTypes = temporaryTypesLocal.get();
if (temporaryTypes == null) {
temporaryTypes = new TypesCache();
temporaryTypesLocal.set(temporaryTypes);
}
List<ObjectType> types = Query.from(ObjectType.class).using(database).selectAll();
int typesSize = types.size();
LOGGER.info("Loading [{}] types from [{}]", typesSize, database.getName());
// Load all types from the database first.
for (ObjectType type : types) {
type.getFields().size(); // Pre-fetch.
temporaryTypes.add(type);
}
if (initializeClasses) {
// Make sure that the root type exists.
ObjectType rootType = getRootType();
State rootTypeState;
if (rootType != null) {
rootTypeState = rootType.getState();
} else {
rootType = new ObjectType();
rootTypeState = rootType.getState();
rootTypeState.setDatabase(database);
}
Map<String, Object> rootTypeOriginals = rootTypeState.getSimpleValues();
UUID rootTypeId = rootTypeState.getId();
rootTypeState.setTypeId(rootTypeId);
rootTypeState.clear();
rootType.setObjectClassName(ObjectType.class.getName());
rootType.initialize();
temporaryTypes.add(rootType);
try {
database.beginWrites();
// Make the new root type available to other types.
temporaryTypes.add(rootType);
if (rootTypeState.isNew()) {
State globals = getGlobals();
globals.put(ROOT_TYPE_FIELD, rootType);
globals.save();
} else if (!rootTypeState.getSimpleValues().equals(rootTypeOriginals)) {
temporaryTypes.changed.add(rootTypeId);
}
Set<Class<? extends Recordable>> objectClasses =
ClassFinder.findClasses(Recordable.class);
for (Iterator<Class<? extends Recordable>> i = objectClasses.iterator(); i.hasNext(); ) {
Class<? extends Recordable> objectClass = i.next();
try {
if (objectClass.isAnonymousClass()
|| Substitution.class.isAssignableFrom(objectClass)) {
i.remove();
}
} catch (IncompatibleClassChangeError error) {
i.remove();
}
}
Set<Class<?>> globalModifications = new HashSet<Class<?>>();
Map<ObjectType, List<Class<?>>> typeModifications =
new HashMap<ObjectType, List<Class<?>>>();
// Make sure all types are accessible to the rest of the
// system as soon as possible, so that references can be
// resolved properly later.
for (Class<?> objectClass : objectClasses) {
ObjectType type = getTypeByClass(objectClass);
if (type == null) {
type = new ObjectType();
type.getState().setDatabase(database);
} else {
type.getState().clear();
}
type.setObjectClassName(objectClass.getName());
typeModifications.put(type, new ArrayList<Class<?>>());
temporaryTypes.add(type);
}
// Separate out all modifications from regular types.
for (Class<?> objectClass : objectClasses) {
if (!Modification.class.isAssignableFrom(objectClass)) {
continue;
}
@SuppressWarnings("unchecked")
Set<Class<?>> modifiedClasses =
Modification.Static.getModifiedClasses(
(Class<? extends Modification<?>>) objectClass);
if (modifiedClasses.contains(Object.class)) {
globalModifications.add(objectClass);
continue;
}
for (Class<?> modifiedClass : modifiedClasses) {
List<Class<?>> assignableClasses = new ArrayList<Class<?>>();
for (Class<?> c : objectClasses) {
if (modifiedClass.isAssignableFrom(c)) {
assignableClasses.add(c);
}
}
for (Class<?> assignableClass : assignableClasses) {
ObjectType type = getTypeByClass(assignableClass);
if (type != null) {
List<Class<?>> modifications = typeModifications.get(type);
if (modifications == null) {
modifications = new ArrayList<Class<?>>();
typeModifications.put(type, modifications);
}
modifications.add(objectClass);
}
}
}
}
// Apply global modifications.
for (Class<?> modification : globalModifications) {
ObjectType.modifyAll(database, modification);
}
// Initialize all types.
List<Class<?>> rootTypeModifications = typeModifications.remove(rootType);
initializeAndModify(temporaryTypes, rootType, rootTypeModifications);
if (rootTypeModifications != null) {
for (Class<?> modification : rootTypeModifications) {
ObjectType t = getTypeByClass(modification);
initializeAndModify(temporaryTypes, t, typeModifications.remove(t));
}
}
ObjectType fieldType = getTypeByClass(ObjectField.class);
List<Class<?>> fieldModifications = typeModifications.remove(fieldType);
initializeAndModify(temporaryTypes, fieldType, fieldModifications);
if (fieldModifications != null) {
for (Class<?> modification : fieldModifications) {
ObjectType t = getTypeByClass(modification);
initializeAndModify(temporaryTypes, t, typeModifications.remove(t));
}
}
for (Map.Entry<ObjectType, List<Class<?>>> entry : typeModifications.entrySet()) {
initializeAndModify(temporaryTypes, entry.getKey(), entry.getValue());
}
database.commitWrites();
} finally {
database.endWrites();
}
}
// Merge temporary types into new permanent types.
TypesCache newPermanentTypes = new TypesCache();
for (ObjectType type : permanentTypes.byId.values()) {
newPermanentTypes.add(type);
}
for (ObjectType type : temporaryTypes.byId.values()) {
newPermanentTypes.add(type);
}
newPermanentTypes.changed.addAll(temporaryTypes.changed);
newPermanentTypes.changed.addAll(permanentTypes.changed);
// If any types changed, clear all types' extras.
if (!temporaryTypes.changed.isEmpty()) {
for (ObjectType type : newPermanentTypes.byId.values()) {
type.getState().getExtras().clear();
}
}
permanentTypes = newPermanentTypes;
lastTypesUpdate = new Date();
} finally {
temporaryTypesLocal.remove();
}
ObjectType singletonType = getTypeByClass(Singleton.class);
if (singletonType != null) {
for (ObjectType type : singletonType.findConcreteTypes()) {
if (!Query.fromType(type).where("_type = ?", type).master().noCache().hasMoreThan(0)) {
try {
State.getInstance(type.createObject(null)).saveImmediately();
} catch (Exception error) {
LOGGER.warn(String.format("Can't save [%s] singleton!", type.getLabel()), error);
}
}
}
}
for (ObjectType type : getTypes()) {
Class<?> objectClass = type.getObjectClass();
if (objectClass != null) {
TypePostProcessorClasses tppcAnnotation =
objectClass.getAnnotation(TypePostProcessorClasses.class);
if (tppcAnnotation != null) {
for (Class<? extends ObjectType.PostProcessor> processorClass : tppcAnnotation.value()) {
ObjectType.PostProcessor processor =
(ObjectType.PostProcessor) TYPE_POST_PROCESSORS.getUnchecked(processorClass);
processor.process(type);
}
}
}
}
}