I am writing sample Kura application in Java. But i am not able to receive message on subscribing to the topic .
In Kura web-UI:
LWT.topic attribute is :
$EDC/#account-name/#client-id (Eg: acc-name = "acc" client-id="client1")
I am publishing from client using topic
$EDC/acc/client1
But i am not receiving the message from the topic i.e following methods will never called
onControlMessageArrived() onMessageArrived()
But only there is a message on Kura.log as message arrived on topic $EDC/acc/client1 but not entering into methods onControlMessageArrived() onMessageArrived()
Code snippet:
public class ConfigurableExample implements ConfigurableComponent, CloudClientListener {
private static final Logger s_logger = LoggerFactory.getLogger(ConfigurableExample.class);
private static final String APP_ID = "Sample";
private CloudService m_cloudService;
private CloudClient m_cloudClient;
public void setCloudService(CloudService cloudService) {
s_logger.info("============================setCloudService============================{}" , cloudService!=null);
m_cloudService = cloudService;
}
public void unsetCloudService(CloudService cloudService) {
m_cloudService = null;
}
protected void activate(ComponentContext componentContext) {
s_logger.info("======================activate()===========================");
try {
if(m_cloudService==null)
throw new KuraException(KuraErrorCode.CONFIGURATION_ATTRIBUTE_INVALID);
if(m_cloudClient==null) {
m_cloudClient = m_cloudService.newCloudClient(APP_ID);
m_cloudClient.addCloudClientListener(this);
s_logger.info("===================={}================",m_cloudService.isConnected());
}
}
catch (KuraException e) {
s_logger.info("============================Exception============================ {}" , e.getMessage());
}
}
protected void deactivate(ComponentContext componentContext) {
s_logger.info("Bundle " + APP_ID + " has stopped!");
}
#Override
public void onConnectionEstablished() {
}
#Override
public void onConnectionLost() {
}
#Override
public void onControlMessageArrived(String arg0, String arg1, KuraPayload arg2, int arg3, boolean arg4) {
s_logger.info("++++++++++++++++++++++onControlMessageArrived with Parameters {},{},{},{},{} ++++++++++++++++++++",arg0, arg1,new String(arg2.getBody()),arg3,arg4);
}
#Override
public void onMessageArrived(String arg0, String arg1, KuraPayload arg2, int arg3, boolean arg4) {
s_logger.info("++++++++++++++++++++++onMessageArrived with Parameters {},{},{},{},{} ++++++++++++++++++++",arg0, arg1,new String(arg2.getBody()),arg3,arg4);
}
#Override
public void onMessageConfirmed(int arg0, String arg1) {
// TODO Auto-generated method stub
}
#Override
public void onMessagePublished(int arg0, String arg1) {
// TODO Auto-generated method stub
}
}
Related
We are trying to implement SMART On FHIR healthcare authorization protocol specification. This spec is an extension to OIDC (open id connect protocol). In SMART on FHIR, we need to add extra claims called 'patient' with value say '123' in AccessTokenResponse object during the OAUTH dance.
In order to accomplish this, I tried to extended the OIDCLoginProtocol and OIDCLoginProtocolFactory classes and given a new name to this protocol called 'smart-openid-connect'. I created this as a SPI (service provider interface) JAR and copied it to /standalone/deployments folder. Now, I can see the new protocol called 'smart-openid-connect' in the UI, but it does not show Access Type options in the client creation screen to select as a confidential client. Hence, I am not able to create client secrets as the Credentials menu is not appearing for this new protocol.
I have the following questions:
How to enable the Credentials tab in the client creation screen using SPI for the new protocol that I created.?
Which class I need to override to add extra claims in AccessTokenResponse ?
Kindly help me in this regard.
Thanks for your help in advance.
I have followed your steps for developing our custom protocol. When we migrate our company existed authentication protocol, I have used org.keycloak.adapters.authentication.ClientCredentialsProvider, org.keycloak.authentication.ClientAuthenticatorFactory, org.keycloak.authentication.ClientAuthenticator classes for defining our custom protocol. Credentials tab is only visible if oidc and confidential choices are selected. It is defined on UI javascript codes. So we choose oidc option for setting custom protocol. Afterwards, we return back to our custom protocol.
XyzClientAuthenticatorFactory
public class XyzClientAuthenticatorFactory implements ClientAuthenticatorFactory, ClientAuthenticator {
public static final String PROVIDER_ID = "xyz-client-authenticator";
public static final String DISPLAY_TEXT = "Xyz Client Authenticator";
public static final String REFERENCE_CATEGORY = null;
public static final String HELP_TEXT = null;
private static final List<ProviderConfigProperty> configProperties = new ArrayList<ProviderConfigProperty>();
private AuthenticationExecutionModel.Requirement[] REQUIREMENT_CHOICES = {
AuthenticationExecutionModel.Requirement.REQUIRED,
AuthenticationExecutionModel.Requirement.ALTERNATIVE,
AuthenticationExecutionModel.Requirement.DISABLED};
static {
ProviderConfigProperty property;
property = new ProviderConfigProperty();
property.setName(Constants.CLIENT_SETTINGS_APP_ID);
property.setLabel("Xyz App Id");
property.setType(ProviderConfigProperty.STRING_TYPE);
configProperties.add(property);
property = new ProviderConfigProperty();
property.setName(Constants.CLIENT_SETTINGS_APP_KEY);
property.setLabel("Xyz App Key");
property.setType(ProviderConfigProperty.STRING_TYPE);
configProperties.add(property);
}
#Override
public void authenticateClient(ClientAuthenticationFlowContext context) {
}
#Override
public String getDisplayType() {
return DISPLAY_TEXT;
}
#Override
public String getReferenceCategory() {
return REFERENCE_CATEGORY;
}
#Override
public ClientAuthenticator create() {
return this;
}
#Override
public boolean isConfigurable() {
return false;
}
#Override
public AuthenticationExecutionModel.Requirement[] getRequirementChoices() {
return REQUIREMENT_CHOICES;
}
#Override
public boolean isUserSetupAllowed() {
return false;
}
#Override
public List<ProviderConfigProperty> getConfigPropertiesPerClient() {
return configProperties;
}
#Override
public Map<String, Object> getAdapterConfiguration(ClientModel client) {
Map<String, Object> result = new HashMap<>();
result.put(Constants.CLIENT_SETTINGS_APP_ID, client.getAttribute(Constants.CLIENT_SETTINGS_APP_ID));
result.put(Constants.CLIENT_SETTINGS_APP_KEY, client.getAttribute(Constants.CLIENT_SETTINGS_APP_KEY));
return result;
}
#Override
public Set<String> getProtocolAuthenticatorMethods(String loginProtocol) {
if (loginProtocol.equals(OIDCLoginProtocol.LOGIN_PROTOCOL)) {
Set<String> results = new LinkedHashSet<>();
results.add(Constants.CLIENT_SETTINGS_APP_ID);
results.add(Constants.CLIENT_SETTINGS_APP_KEY);
return results;
} else {
return Collections.emptySet();
}
}
#Override
public String getHelpText() {
return HELP_TEXT;
}
#Override
public List<ProviderConfigProperty> getConfigProperties() {
return new LinkedList<>();
}
#Override
public ClientAuthenticator create(KeycloakSession session) {
return this;
}
#Override
public void init(Config.Scope config) {
}
#Override
public void postInit(KeycloakSessionFactory factory) {
}
#Override
public void close() {
}
#Override
public String getId() {
return PROVIDER_ID;
}
}
XyzClientCredential
public class XyzClientCredential implements ClientCredentialsProvider {
public static final String PROVIDER_ID = "xyz-client-credential";
#Override
public String getId() {
return PROVIDER_ID;
}
#Override
public void init(KeycloakDeployment deployment, Object config) {
}
#Override
public void setClientCredentials(KeycloakDeployment deployment, Map<String, String> requestHeaders, Map<String, String> formParams) {
}
}
XyzLoginProtocolFactory
public class XyzLoginProtocolFactory implements LoginProtocolFactory {
static {
}
#Override
public Map<String, ProtocolMapperModel> getBuiltinMappers() {
return new HashMap<>();
}
#Override
public Object createProtocolEndpoint(RealmModel realm, EventBuilder event) {
return new XyzLoginProtocolService(realm, event);
}
protected void addDefaultClientScopes(RealmModel realm, ClientModel newClient) {
addDefaultClientScopes(realm, Arrays.asList(newClient));
}
protected void addDefaultClientScopes(RealmModel realm, List<ClientModel> newClients) {
Set<ClientScopeModel> defaultClientScopes = realm.getDefaultClientScopes(true).stream()
.filter(clientScope -> getId().equals(clientScope.getProtocol()))
.collect(Collectors.toSet());
for (ClientModel newClient : newClients) {
for (ClientScopeModel defaultClientScopeModel : defaultClientScopes) {
newClient.addClientScope(defaultClientScopeModel, true);
}
}
Set<ClientScopeModel> nonDefaultClientScopes = realm.getDefaultClientScopes(false).stream()
.filter(clientScope -> getId().equals(clientScope.getProtocol()))
.collect(Collectors.toSet());
for (ClientModel newClient : newClients) {
for (ClientScopeModel nonDefaultClientScope : nonDefaultClientScopes) {
newClient.addClientScope(nonDefaultClientScope, true);
}
}
}
#Override
public void createDefaultClientScopes(RealmModel newRealm, boolean addScopesToExistingClients) {
// Create default client scopes for realm built-in clients too
if (addScopesToExistingClients) {
addDefaultClientScopes(newRealm, newRealm.getClients());
}
}
#Override
public void setupClientDefaults(ClientRepresentation rep, ClientModel newClient) {
}
#Override
public LoginProtocol create(KeycloakSession session) {
return new XyzLoginProtocol().setSession(session);
}
#Override
public void init(Config.Scope config) {
log.infof("XyzLoginProtocolFactory init");
}
#Override
public void postInit(KeycloakSessionFactory factory) {
factory.register(event -> {
if (event instanceof RealmModel.ClientCreationEvent) {
ClientModel client = ((RealmModel.ClientCreationEvent)event).getCreatedClient();
addDefaultClientScopes(client.getRealm(), client);
addDefaults(client);
}
});
}
protected void addDefaults(ClientModel client) {
}
#Override
public void close() {
}
#Override
public String getId() {
return XyzLoginProtocol.LOGIN_PROTOCOL;
}
}
XyzLoginProtocol
public class XyzLoginProtocol implements LoginProtocol {
public static final String LOGIN_PROTOCOL = "xyz";
protected KeycloakSession session;
protected RealmModel realm;
protected UriInfo uriInfo;
protected HttpHeaders headers;
protected EventBuilder event;
public XyzLoginProtocol(KeycloakSession session, RealmModel realm, UriInfo uriInfo, HttpHeaders headers, EventBuilder event) {
this.session = session;
this.realm = realm;
this.uriInfo = uriInfo;
this.headers = headers;
this.event = event;
}
public XyzLoginProtocol() {
}
#Override
public XyzLoginProtocol setSession(KeycloakSession session) {
this.session = session;
return this;
}
#Override
public XyzLoginProtocol setRealm(RealmModel realm) {
this.realm = realm;
return this;
}
#Override
public XyzLoginProtocol setUriInfo(UriInfo uriInfo) {
this.uriInfo = uriInfo;
return this;
}
#Override
public XyzLoginProtocol setHttpHeaders(HttpHeaders headers) {
this.headers = headers;
return this;
}
#Override
public XyzLoginProtocol setEventBuilder(EventBuilder event) {
this.event = event;
return this;
}
#Override
public Response authenticated(AuthenticationSessionModel authSession, UserSessionModel userSession, ClientSessionContext clientSessionCtx) {
log.debugf("Authenticated.. User: %s, Session Id: %s", userSession.getUser().getUsername(), userSession.getId());
try {
....
} catch (Exception ex) {
// TODO handle TokenNotFoundException exception
log.error(ex.getMessage(), ex);
return Response.status(Response.Status.INTERNAL_SERVER_ERROR).build();
}
}
#Override
public Response sendError(AuthenticationSessionModel authSession, Error error) {
new AuthenticationSessionManager(session).removeAuthenticationSession(realm, authSession, true);
String redirect = authSession.getRedirectUri();
try {
URI uri = new URI(redirect);
return Response.status(302).location(uri).build();
} catch (Exception ex) {
log.error(ex.getMessage(), ex);
return Response.noContent().build();
}
}
#Override
public void backchannelLogout(UserSessionModel userSession, AuthenticatedClientSessionModel clientSession) {
ClientModel client = clientSession.getClient();
new ResourceAdminManager(session).logoutClientSession(realm, client, clientSession);
}
#Override
public Response frontchannelLogout(UserSessionModel userSession, AuthenticatedClientSessionModel clientSession) {
throw new RuntimeException("NOT IMPLEMENTED");
}
#Override
public Response finishLogout(UserSessionModel userSession) {
return Response.noContent().build();
}
#Override
public boolean requireReauthentication(UserSessionModel userSession, AuthenticationSessionModel authSession) {
return false;
}
#Override
public boolean sendPushRevocationPolicyRequest(RealmModel realm, ClientModel resource, int notBefore, String managementUrl) {
PushNotBeforeAction adminAction = new PushNotBeforeAction(TokenIdGenerator.generateId(), Time.currentTime() + 30, resource.getClientId(), notBefore);
String token = session.tokens().encode(adminAction);
log.tracev("pushRevocation resource: {0} url: {1}", resource.getClientId(), managementUrl);
URI target = UriBuilder.fromUri(managementUrl).path(AdapterConstants.K_PUSH_NOT_BEFORE).build();
try {
int status = session.getProvider(HttpClientProvider.class).postText(target.toString(), token);
boolean success = status == 204 || status == 200;
log.tracef("pushRevocation success for %s: %s", managementUrl, success);
return success;
} catch (IOException e) {
ServicesLogger.LOGGER.failedToSendRevocation(e);
return false;
}
}
#Override
public void close() {
}
}
XyzLoginProtocolService
public class XyzLoginProtocolService {
private final RealmModel realm;
private final EventBuilder event;
#Context
private KeycloakSession session;
#Context
private HttpHeaders headers;
#Context
private HttpRequest request;
#Context
private ClientConnection clientConnection;
public XyzLoginProtocolService(RealmModel realm, EventBuilder event) {
this.realm = realm;
this.event = event;
this.event.realm(realm);
}
#POST
#Path("request")
#Produces(MediaType.APPLICATION_JSON)
#NoCache
public Response request(ApipmLoginRequest loginRequest) {
....
}
I am using the clean architecture with MVVM pattern so the room part goes into the data layer and I'm returning observables from there to domain layer and using them in presentation layer by wrapping them in a LiveData.
Now, the problem is that after insertion/deletion/update the list is not getting updated immediately in UI.
Viewmodel in Presentation Layer:
public class WordViewModel extends BaseViewModel<WordNavigator> {
//get all the use cases here
private GetAllWords getAllWords;
private InsertWord insertWord;
private DeleteThisWord deleteThisWord;
private UpdateThisWord updateThisWord;
private GetTheIndexOfTopWord getTheIndexOfTopWord;
//data
public MutableLiveData<List<Word>> allWords;
public WordViewModel(GetAllWords getAllWords, InsertWord insertWord, DeleteThisWord deleteThisWord, UpdateThisWord updateThisWord, GetTheIndexOfTopWord getTheIndexOfTopWord) {
this.getAllWords = getAllWords;
this.insertWord = insertWord;
this.deleteThisWord = deleteThisWord;
this.updateThisWord = updateThisWord;
this.getTheIndexOfTopWord = getTheIndexOfTopWord;
}
public void getAllWords() {
getAllWords.execute(new DisposableObserver<List<Word>>() {
#Override
public void onNext(List<Word> words) {
allWords.setValue(words);
}
#Override
public void onError(Throwable e) {
}
#Override
public void onComplete() {
}
}, GetAllWords.Params.getAllWords());
}
public void insertWord(Word word) {
insertWord.execute(new DisposableObserver<Boolean>() {
#Override
public void onNext(Boolean aBoolean) {
if (aBoolean)
Log.e("ganesh", "word inserted successfully!!!");
}
#Override
public void onError(Throwable e) {
e.printStackTrace();
}
#Override
public void onComplete() {
}
}, InsertWord.Params.insertWord(word));
}
public void getTheIndexOfTopWord(final String action) {
getTheIndexOfTopWord.execute(new DisposableObserver<Word>() {
#Override
public void onNext(Word word) {
if (word != null)
getNavigator().updateTopIndex(word.getWordId(), action);
}
#Override
public void onError(Throwable e) {
e.printStackTrace();
}
#Override
public void onComplete() {
}
}, GetTheIndexOfTopWord.Params.getTheIndexOfTopWord());
}
public void deleteThisWord(int wordId) {
deleteThisWord.execute(new DisposableObserver<Boolean>() {
#Override
public void onNext(Boolean aBoolean) {
if (aBoolean)
Log.e("ganesh", "word deleted successfully!!!");
}
#Override
public void onError(Throwable e) {
e.printStackTrace();
}
#Override
public void onComplete() {
}
}, DeleteThisWord.Params.deleteThisWord(wordId));
}
public void updateThisWord(int wordId, String newWord) {
updateThisWord.execute(new DisposableObserver<Boolean>() {
#Override
public void onNext(Boolean aBoolean) {
if (aBoolean)
Log.e("ganesh", "word updated successfully!!!");
}
#Override
public void onError(Throwable e) {
e.printStackTrace();
}
#Override
public void onComplete() {
}
}, UpdateThisWord.Params.updateThisWord(wordId, newWord));
}
public MutableLiveData<List<Word>> getWords() {
if (allWords == null) {
allWords = new MutableLiveData<>();
}
return allWords;
}
#Override
protected void onCleared() {
super.onCleared();
if (getAllWords != null)
getAllWords = null;
if (deleteThisWord != null)
deleteThisWord = null;
if (insertWord != null)
insertWord = null;
if (updateThisWord != null)
updateThisWord = null;
if (getTheIndexOfTopWord != null)
getTheIndexOfTopWord = null;
}
}
DAO in Data Layer:
#Dao
public interface WordDao {
#Insert
void insertThisWord(Word word);
#Query("delete from word_table")
void deleteAll();
#Query("select * from word_table order by word_id asc")
List<Word> getAllWords();
#Query("delete from word_table where word_id = :wordId")
void deleteThisWord(int wordId);
#Query("update word_table set word = :newWord where word_id = :wordId")
void updateThisWord(int wordId, String newWord);
#Query("select * from word_table order by word_id asc limit 1")
Word getTheIndexOfTopWord();
}
Repository in Data Layer:
public class WordRepositoryImpl implements WordRepository {
private ApiInterface apiInterface;
private SharedPreferenceHelper sharedPreferenceHelper;
private Context context;
private WordDao wordDao;
private WordRoomDatabase db;
public WordRepositoryImpl(ApiInterface apiInterface, SharedPreferenceHelper sharedPreferenceHelper, WordRoomDatabase db, Context context) {
this.apiInterface = apiInterface;
this.sharedPreferenceHelper = sharedPreferenceHelper;
this.context = context;
this.db = db;
wordDao = db.wordDao();
}
#Override
public Observable<Integer> sum(final int a, final int b) {
return Observable.fromCallable(new Callable<Integer>() {
#Override
public Integer call() throws Exception {
return (a + b);
}
});
}
#Override
public Observable<List<Word>> getAllWords() {
return Observable.fromCallable(new Callable<List<Word>>() {
#Override
public List<Word> call() throws Exception {
List<Word> list = new ArrayList<>();
List<com.example.data.models.Word> listWords = db.wordDao().getAllWords();
for (com.example.data.models.Word item : listWords) {
list.add(new Word(item.getWordId(), item.getWord(), item.getWordLength()));
}
return list;
}
});
}
#Override
public Observable<Boolean> insertThisWord(final Word word) {
return Observable.fromCallable(new Callable<Boolean>() {
#Override
public Boolean call() throws Exception {
com.example.data.models.Word item = new com.example.data.models.Word(word.getWord(), word.getWordLength());
db.wordDao().insertThisWord(item);
return true;
}
});
}
#Override
public Observable<Boolean> deleteThisWord(final int wordId) {
return Observable.fromCallable(new Callable<Boolean>() {
#Override
public Boolean call() throws Exception {
db.wordDao().deleteThisWord(wordId);
return true;
}
});
}
#Override
public Observable<Boolean> updateThisWord(final int wordId, final String newWord) {
return Observable.fromCallable(new Callable<Boolean>() {
#Override
public Boolean call() throws Exception {
db.wordDao().updateThisWord(wordId, newWord);
return true;
}
});
}
#Override
public Observable<Word> getTheIndexOfTopWord() {
return Observable.fromCallable(new Callable<Word>() {
#Override
public Word call() throws Exception {
com.example.data.models.Word item = db.wordDao().getTheIndexOfTopWord();
Word word = new Word(item.getWordId(), item.getWord(), item.getWordLength());
return word;
}
});
}
}
GetAllWordsUseCase in Domain Layer:
public class GetAllWords extends UseCase<List<Word>, GetAllWords.Params> {
private WordRepository wordRepository;
public GetAllWords(PostExecutionThread postExecutionThread, WordRepository wordRepository) {
super(postExecutionThread);
this.wordRepository = wordRepository;
}
#Override
public Observable<List<Word>> buildUseCaseObservable(Params params) {
return wordRepository.getAllWords();
}
public static final class Params {
private Params() {
}
public static GetAllWords.Params getAllWords() {
return new GetAllWords.Params();
}
}
}
UseCase Base Class in domain layer:
public abstract class UseCase<T, Params> {
private final PostExecutionThread postExecutionThread;
private final CompositeDisposable compositeDisposable;
public UseCase(PostExecutionThread postExecutionThread) {
this.postExecutionThread = postExecutionThread;
this.compositeDisposable = new CompositeDisposable();
}
/**
* Builds an {#link Observable} which will be used when executing the current {#link UseCase}.
*/
public abstract Observable<T> buildUseCaseObservable(Params params);
/**
* Dispose from current {#link CompositeDisposable}.
*/
public void dispose() {
if (!compositeDisposable.isDisposed()) {
compositeDisposable.dispose();
}
}
/**
* Executes the current use case.
*
* #param observer {#link DisposableObserver} which will be listening to the observable build
* by {#link #buildUseCaseObservable(Params)} ()} method.
* #param params Parameters (Optional) used to build/execute this use case.
*/
public void execute(DisposableObserver<T> observer, Params params) {
if (observer != null) {
final Observable<T> observable = this.buildUseCaseObservable(params)
.subscribeOn(Schedulers.io())
.observeOn(postExecutionThread.getScheduler());
addDisposable(observable.subscribeWith(observer));
}
}
/**
* Dispose from current {#link CompositeDisposable}.
*/
private void addDisposable(Disposable disposable) {
if (disposable != null && compositeDisposable != null)
compositeDisposable.add(disposable);
}
}
Finally, WordActivity in Presentation Layer
public class WordActivity extends BaseActivity<WordViewModel> implements
View.OnClickListener, WordNavigator {
#Inject
WordViewModel wordViewModel;
private Button deleteButton, updateButton, addButton;
private EditText editTextWord;
private WordListAdapter adapter;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_word);
((MainApplication) getApplicationContext()).getComponent().inject(this);
editTextWord = findViewById(R.id.activity_word_et_word);
deleteButton = findViewById(R.id.activity_main_delete_button);
updateButton = findViewById(R.id.activity_main_update_button);
addButton = findViewById(R.id.activity_word_btn_add_word);
deleteButton.setOnClickListener(this);
updateButton.setOnClickListener(this);
addButton.setOnClickListener(this);
RecyclerView recyclerView = findViewById(R.id.recyclerview);
adapter = new WordListAdapter(this);
recyclerView.setAdapter(adapter);
recyclerView.setLayoutManager(new LinearLayoutManager(this));
getViewModel().setNavigator(this);
getViewModel().getAllWords();
getViewModel().getWords().observe(this, new Observer<List<Word>>() {
#Override
public void onChanged(#android.support.annotation.Nullable List<Word> words) {
adapter.setWords(words);
}
});
}
#Override
public void onClick(View v) {
switch (v.getId()) {
case R.id.activity_main_delete_button:
getViewModel().getTheIndexOfTopWord(TOP_INDEX_ACTION_DELETE);
break;
case R.id.activity_main_update_button:
getViewModel().getTheIndexOfTopWord(TOP_INDEX_ACTION_UPDATE);
break;
case R.id.activity_word_btn_add_word:
handleAddButtonClick();
break;
}
}
public void handleAddButtonClick() {
String text = editTextWord.getText().toString();
if (text.equals("")) {
Toast.makeText(getApplicationContext(), R.string.empty_not_saved, Toast.LENGTH_LONG).show();
} else {
Word word = new Word(text, text.length());
getViewModel().insertWord(word);
editTextWord.setText("");
editTextWord.clearFocus();
}
}
#Override
public void updateTopIndex(Integer wordId, String action) {
if (action.equals(TOP_INDEX_ACTION_DELETE))
getViewModel().deleteThisWord(wordId);
else
getViewModel().updateThisWord(wordId, "dsakagdad");
}
#Override
public WordViewModel getViewModel() {
return wordViewModel;
}
}
**getViewModel().getWords().observe(this, new Observer<List<Word>>() {
#Override
public void onChanged(#android.support.annotation.Nullable List<Word> words) {
adapter.setWords(words);
}
});**
//This portion is getting called only once but not when I
insert/update/delete words from room database!
Can anyone go through these and help me out here!
This method in the DAO will query for the list and return it like a normal SQL query:
#Query("select * from word_table order by word_id asc")
List<Word> getAllWords();
If you want to observe for changes you might wanna consider using an RxJava2 Flowable/Observable or a LiveData for that.
As I prefer the RxJava approach, It will look like this:
#Query("select * from word_table order by word_id asc")
Flowable<List<Word>> getAllWords();
// or
Observable<List<Word>> getAllWords();
Difference between Flowable and Observable
With that done, you might wanna change the getAllWords method in the repository to return that Flowable/Observable.
Note: Either using an Observable or a Flowable both will emit the query result initially once and then start observing for further changes till unsubscribed to.
Read more about Room with RxJava
We're currently researching the best way to upgrade from Toplink 2.1-60f to EclipseLink 2.6. The project is somewhat large and most of the manual work would have to be done in parts of the code where we are using NativeQuery. Query.getResultList() result differs between the two JPA-implementations as TopLink returns a List<Vector> and EclipseLink on the other hand returns a List<Object[]>. The code is unfortunately therefore littered with List<Vector> references.
Part of the solution would be to convert the result from list array to a list of vectors. Instead of doing this in all the numerous places manually, I was thinking we could use AspectJ to intercept the getResultList() calls and convert the return values. Is this a viable solution? Has anyone implemented similar solutions? We're using Maven as our build tool.
Thanks in advance!
My suggestion is: Use a good IDE and refactor your code!
But because you asked for an AOP solution, here is a self-consistent AspectJ example. As I have never used JPA, I will just recreate your situation as a little abstraction.
Abstract Query base implementation with lots of dummy methods:
package de.scrum_master.persistence;
import java.util.*;
import javax.persistence.*;
public abstract class MyBaseQueryImpl implements Query {
#Override public int executeUpdate() { return 0; }
#Override public int getFirstResult() { return 0; }
#Override public FlushModeType getFlushMode() { return null; }
#Override public Map<String, Object> getHints() { return null; }
#Override public LockModeType getLockMode() { return null; }
#Override public int getMaxResults() { return 0; }
#Override public Parameter<?> getParameter(String arg0) { return null; }
#Override public Parameter<?> getParameter(int arg0) { return null; }
#Override public <T> Parameter<T> getParameter(String arg0, Class<T> arg1) { return null; }
#Override public <T> Parameter<T> getParameter(int arg0, Class<T> arg1) { return null; }
#Override public <T> T getParameterValue(Parameter<T> arg0) { return null; }
#Override public Object getParameterValue(String arg0) { return null; }
#Override public Object getParameterValue(int arg0) { return null; }
#Override public Set<Parameter<?>> getParameters() { return null; }
#Override public Object getSingleResult() { return null; }
#Override public boolean isBound(Parameter<?> arg0) { return false; }
#Override public Query setFirstResult(int arg0) { return null; }
#Override public Query setFlushMode(FlushModeType arg0) { return null; }
#Override public Query setHint(String arg0, Object arg1) { return null; }
#Override public Query setLockMode(LockModeType arg0) { return null; }
#Override public Query setMaxResults(int arg0) { return null; }
#Override public <T> Query setParameter(Parameter<T> arg0, T arg1) { return null; }
#Override public Query setParameter(String arg0, Object arg1) { return null; }
#Override public Query setParameter(int arg0, Object arg1) { return null; }
#Override public Query setParameter(Parameter<Calendar> arg0, Calendar arg1, TemporalType arg2) { return null; }
#Override public Query setParameter(Parameter<Date> arg0, Date arg1, TemporalType arg2) { return null; }
#Override public Query setParameter(String arg0, Calendar arg1, TemporalType arg2) { return null; }
#Override public Query setParameter(String arg0, Date arg1, TemporalType arg2) { return null; }
#Override public Query setParameter(int arg0, Calendar arg1, TemporalType arg2) { return null; }
#Override public Query setParameter(int arg0, Date arg1, TemporalType arg2) { return null; }
#Override public <T> T unwrap(Class<T> arg0) { return null; }
}
The only method missing is getResultList(), so now let us provide two different implementations for it, extending the abstract base implementation:
Concrete Query implementation returning List<Vector>:
This emulates your TopLink class.
package de.scrum_master.persistence;
import java.util.*;
public class VectorQuery extends MyBaseQueryImpl {
#Override
public List getResultList() {
List<Vector<String>> resultList = new ArrayList<>();
Vector<String> result = new Vector<>();
result.add("foo"); result.add("bar");
resultList.add(result);
result = new Vector<>();
result.add("one"); result.add("two");
resultList.add(result);
return resultList;
}
}
Concrete Query implementation returning List<Object[]>:
This emulates your EclipseLink class.
package de.scrum_master.persistence;
import java.util.*;
public class ArrayQuery extends MyBaseQueryImpl {
#Override
public List getResultList() {
List<Object[]> resultList = new ArrayList<>();
Object[] result = new Object[] { "foo", "bar" };
resultList.add(result);
result = new Object[] { "one", "two" };
resultList.add(result);
return resultList;
}
}
Driver application:
The application creates queries of both concrete subtypes, each time assuming that the list elements will be vectors.
package de.scrum_master.app;
import java.util.*;
import de.scrum_master.persistence.*;
public class Application {
public static void main(String[] args) {
List<Vector<?>> resultList;
resultList = new VectorQuery().getResultList();
for (Vector<?> result : resultList)
System.out.println(result);
resultList = new ArrayQuery().getResultList();
for (Vector<?> result : resultList)
System.out.println(result);
}
}
Console log without aspect:
[foo, bar]
[one, two]
Exception in thread "main" java.lang.ClassCastException: [Ljava.lang.Object; cannot be cast to java.util.Vector
at de.scrum_master.app.Application.main(Application.java:15)
Uh-oh! This is exactly your problem, right? Now what can we do about it if we absolutely refuse to refactor? We abuse AOP for patching up the legacy code. (Please don't do it, but you can if you absolutely want to.)
AspectJ query result adapter:
Disregarding usage of raw types and other ugly stuff, here is my proof of concept:
package de.scrum_master.aspect;
import java.util.*;
import org.aspectj.lang.ProceedingJoinPoint;
import org.aspectj.lang.annotation.Around;
import org.aspectj.lang.annotation.Aspect;
#Aspect
public class QueryResultAdapter {
#Around("call(* javax.persistence.Query.getResultList())")
public List<Vector> transformQueryResult(ProceedingJoinPoint thisJoinPoint) throws Throwable {
System.out.println(thisJoinPoint);
List result = (List) thisJoinPoint.proceed();
if (result != null && result.size() > 0 && result.get(0) instanceof Vector)
return result;
System.out.println("Transforming arrays to vectors");
List<Vector> transformedResult = new ArrayList<Vector>();
for (Object[] arrayItem : (List<Object[]>) result)
transformedResult.add(new Vector(Arrays.asList(arrayItem)));
return transformedResult;
}
}
Console log with aspect:
call(List de.scrum_master.persistence.VectorQuery.getResultList())
[foo, bar]
[one, two]
call(List de.scrum_master.persistence.ArrayQuery.getResultList())
Transforming arrays to vectors
[foo, bar]
[one, two]
Et voilà - you can do ugly stuff and other things it was not invented for with AOP. ;-)
Im trying to test the Performance tip of : https://groups.google.com/forum/#!msg/google-web-toolkit/f9FLCEloW-c/3ZelaqGUGTcJ
I have more than 5 different Callbacks with different result object .
how can i creat a dynamic static class in only one static Class :
public class AsyncCallbacks
{
private static AsyncCallback<?> callback = null;
private AsyncCallbacks(){
}
private AsyncCallback<?> createCallback() {
if(callback == null) {
callback = new AsyncCallback(){
#Override
public void onFailure(Throwable caught)
{
// TODO Auto-generated method stub
}
#Override
public void onSuccess(Object result)
{
// TODO Auto-generated method stub
}
};
}
return callback;
}
}
public class Asyncs implements AsyncCallback<Object> {
private Dto1 dto1 = null;
private Dto2 dto2 = null;
private Object result = null;
#Override
public void onFailure(Throwable caught) {
// failed message
}
#Override
public void onSuccess(Object result) {
this.result = result;
}
public Object getSuccessObject() {
if (result instanceof Dto1) {
dto1 = (Dto1) result;
} else if (result instanceof Dto2) {
dto2 = (Dto2) result;
}
return result;
}
}
i created a web application where i have to use fileUpload.
i have to send the file and their properties to server . For sending a file i used FormPanel and for properties i used RPC .
public void onModuleLoad() {
final FileServiceEndPoint serviceEndPoint = new FileServiceEndPoint();
new AddDocument();
Button b = new Button("addDocument");
b.addClickHandler(new ClickHandler() {
private Map<String, String> docProperty;
public void onClick(ClickEvent event) {
docProperty =getProperties();
AsyncCallback<String> callback = new AsyncCallback<String>() {
public void onSuccess(String result) {
System.out.println("he ha" +result);
}
public void onFailure(Throwable caught) {
}
};
serviceEndPoint.uploadAttachement(docProperty, callback);
}
});
RootPanel.get().add(b);
}
this new AddDocument(); contains code for uploading a file (formPanel code)
private FormPanel getFormPanel() {
if (uploadForm == null) {
uploadForm = new FormPanel();
uploadForm.setAction(GWT.getHostPageBaseURL() +"TestUploadFileServlet");
uploadForm.setEncoding(FormPanel.ENCODING_MULTIPART);
uploadForm.setMethod(FormPanel.METHOD_POST);
uploadForm.setWidget(getFileUpload());
System.out.println(GWT.getHostPageBaseURL() +"TestUploadFileServlet");
uploadForm.addFormHandler(new FormHandler() {
public void onSubmitComplete(FormSubmitCompleteEvent event) {
AddDocument.this.hide(true);
}
public void onSubmit(FormSubmitEvent event) {
}
});
}
return uploadForm;
}
private Button getAddButton() {
if (addButton == null) {
addButton = new Button("ADD");
addButton.addClickHandler(new ClickHandler() {
public void onClick(ClickEvent event) {
uploadForm.submit();
}
});
addButton.setText("Add");
}
Interface is created for Sending property.
EndPoints:
public class FileServiceEndPoint implements FileServiceAsync{
FileServiceAsync service = (FileServiceAsync)GWT.create(FileService.class);
ServiceDefTarget endpoint = (ServiceDefTarget) service;
public FileServiceEndPoint() {
endpoint.setServiceEntryPoint(GWT.getHostPageBaseURL() + “TestUploadFileServlet”);
}
public void uploadAttachement(Map docProperty,
AsyncCallback callback) {
service.uploadAttachement(docProperty, callback);
}
}
On Server:
public class FileUploadImpl extends RemoteServiceServlet implements FileService {
private static final long serialVersionUID = 1L;
private static final Logger log = Logger.getLogger(FileUploadImpl.class
.getName());
String a;
protected void service(final HttpServletRequest request,HttpServletResponse response)
throws ServletException,IOException {
a=”5″;
System.out.println(“ServletWorking Fine “);
}
public String uploadAttachement(Map docProperty) {
// TODO Auto-generated method stub
return “Checked”;
}
}
When I debug formPanel.submit : the debugger goes in Server and print ServletWorking Fine(this is perfect)
and when i debug the addProperties button it goes to server and print ServletWorking Fine. but It should not go in service method.
the debugger should go in UploadAttachement.
Plz tell how to pass hashMap using same servlet.