List of usage examples for com.google.gwt.core.client Callback onSuccess
void onSuccess(T result);
From source file:cc.kune.embed.client.EmbedHelper.java
License:GNU Affero Public License
/** * Process json request./*from w w w . java 2 s . c o m*/ * * @param url * the url * @param callback * the callback */ public static void processJSONRequest(final String url, final Callback<JavaScriptObject, Void> callback) { final JsonpRequestBuilder builder = new JsonpRequestBuilder(); builder.setTimeout(60000); @SuppressWarnings("unused") final JsonpRequest<JavaScriptObject> request = builder.requestObject(url, new AsyncCallback<JavaScriptObject>() { @Override public void onFailure(final Throwable exception) { Log.error("JSON exception: ", exception); callback.onFailure(null); } @Override public void onSuccess(final JavaScriptObject result) { callback.onSuccess(result); } }); }
From source file:cc.kune.embed.client.EmbedHelper.java
License:GNU Affero Public License
/** * Process request./*from w w w . j a va2 s . co m*/ * * @param url * the url * @param callback * the callback */ public static void processRequest(final String url, final Callback<Response, Void> callback) { try { final RequestBuilder builder = new RequestBuilder(RequestBuilder.GET, url); // Needed for CORS builder.setIncludeCredentials(true); @SuppressWarnings("unused") final Request request = builder.sendRequest(null, new RequestCallback() { @Override public void onError(final Request request, final Throwable exception) { Log.error("CORS exception: ", exception); callback.onFailure(null); } @Override public void onResponseReceived(final Request request, final Response response) { if (200 == response.getStatusCode()) { callback.onSuccess(response); } else { Log.error("Couldn't retrieve CORS (" + response.getStatusText() + ")"); callback.onFailure(null); } } }); } catch (final RequestException exception) { Log.error("CORS exception: ", exception); callback.onFailure(null); } }
From source file:ch.gbrain.gwtstorage.manager.StorageManager.java
License:Apache License
/** * Write the item to the local fileentry asynchronous * /*www . j av a 2 s .co m*/ * @param fileEntry * @param item * @param callback Is called once the asynch action completed or failed * @return false if the asynchronous action invocation failed. */ private boolean writeStorageItemToLocalFile(FileEntry fileEntry, final StorageItem item, final Callback<StorageItem, StorageError> callback) { if (item == null) return false; try { logger.log(Level.INFO, "writeStorageItem to local file invoked" + item.getLogId()); fileEntry.createWriter(new FileCallback<FileWriter, FileError>() { @Override public void onSuccess(FileWriter writer) { writer.setOnWriteEndCallback(new WriterCallback<FileWriter>() { @Override public void onCallback(FileWriter result) { // file written logger.log(Level.INFO, "writeToLocalFile successfully written" + item.getLogId()); if (callback != null) { callback.onSuccess(item); } } }); writer.setOnErrorCallback(new WriterCallback<FileWriter>() { @Override public void onCallback(FileWriter result) { // Error while writing file logger.log(Level.SEVERE, "Failure file write StorageItem" + item.getLogId() + " : " + result.toString()); if (callback != null) { callback.onFailure(new StorageError(result.getError())); } } }); JSONValue json = item.toJson(); writer.write(json.toString()); } @Override public void onFailure(FileError error) { // can not create writer logger.log(Level.SEVERE, "Failure file writer creation StorageItem" + item.getLogId() + " : " + error.toString()); if (callback != null) { callback.onFailure(new StorageError(error)); } } }); return true; } catch (Exception ex) { logger.log(Level.SEVERE, "Exception file write StorageItem" + item.toString(), ex); if (callback != null) { callback.onFailure(new StorageError(FileError.ABORT_ERR)); } } return false; }
From source file:ch.gbrain.gwtstorage.manager.StorageManager.java
License:Apache License
/** * Read the StorageItem from the given FileEntry and refresh the given * CommonView//from w w w. ja v a2 s . co m * * @param fileEntry * @param item * @param callback Is called once the asynch action completed or failed * @return false if the asynchronous action invocation failed. */ private boolean readStorageItemFromLocalFile(FileEntry fileEntry, final StorageItem item, final Callback<StorageItem, StorageError> callback) { if (item == null) return false; try { // logger.log(Level.INFO,"readStorageItem from local file invoked" + // item.getLogId()); FileReader reader = phonegap.getFile().createReader(); reader.setOnloadCallback(new ReaderCallback<FileReader>() { @Override public void onCallback(FileReader result) { String json = result.getResult(); // do something with the content item.fromJson(json); logger.log(Level.INFO, "readStorageItem from local file load completed for item" + item.getLogId()); if (callback != null) { callback.onSuccess(item); } } }); reader.setOnErrorCallback(new ReaderCallback<FileReader>() { @Override public void onCallback(FileReader result) { // error while reading file... logger.log(Level.SEVERE, "Error StorageItem file writer reading" + item.getLogId() + " : " + result.toString()); if (callback != null) { callback.onFailure(new StorageError(result.getError())); } } }); return true; } catch (Exception ex) { logger.log(Level.SEVERE, "Exception file read StorageItem" + item.getLogId(), ex); if (callback != null) { callback.onFailure(new StorageError(FileError.ABORT_ERR)); } } return false; }
From source file:ch.gbrain.gwtstorage.manager.StorageManager.java
License:Apache License
/** * Retrieve the item from the storage. First try local storage, if the version * and the validTime are valid, it is returned. Else it tries to retrieve it * from the remote backend. If found, it is cached locally for fast access. * /* w ww . ja v a 2s . c o m*/ * @param item The item to be read by ID from 1. the cache, 2. localAppPath 3. * remoteAppPath in this priority order * @param useCache If true, the system will first try to retrieve the value * from the local cache before it reads the same from the * applications path * @param validTime The maximum age in seconds of the cache to be accepted as * a valid item value, if elapsed it will try to read from the * applications path / If <= 0 don't care * @param expectedVersion The versionNumber which must be available in the * cache to be a valid cache item. If <=0 don't care. */ public boolean readStorageItem(final StorageItem item, boolean useCache, int expectedVersion, int validTime, final Callback<StorageItem, StorageError> callback) { try { logger.log(Level.INFO, "readStorageItem" + item.getLogId()); if (useCache && this.getCacheEnabled()) { // retrieve the item first from local storage cache if (this.readStorageItemFromLocalStorage(item, expectedVersion, validTime)) { // found it valid in the cache callback.onSuccess(item); return true; } } // didn't found a matching item in the cache yet or version mismatch or // cache time elapsed if (phonegap.isPhoneGapDevice()) { // we run in a locally installed app and want to retrieve now the value // from the given backend return this.readStorageItemFromRemoteApplication(item, callback); } else { // in the case of web app, load it from the applications relative base path // this is automatically from the backend server where the app was // loaded from return this.readStorageItemFromLocalApplication(item, callback); } } catch (Exception ex) { logger.log(Level.SEVERE, "Exception readStorageItem" + item.getLogId(), ex); if (callback != null) { callback.onFailure(new StorageError(FileError.ABORT_ERR)); } } return false; }
From source file:ch.gbrain.gwtstorage.manager.StorageManager.java
License:Apache License
/** * Creates and returns a Callback which treats the result for a url Item * retrieval//from w w w . j av a2s .c o m * * @param item The StorageItem (or a inheriting object) which must be read * (filled in with the retrieved data) * @param callback The final resp. initial callback to be notified of the * result * @param fallBack A URL to which a further request must be done if the call * fails * @return The callback which deals with the asynch result of the remote item * retrieval */ private Callback<StorageItem, StorageError> getReadStorageItemHandler(final StorageItem item, final Callback<StorageItem, StorageError> callback, final String fallbackUrl) { return new Callback<StorageItem, StorageError>() { public void onSuccess(StorageItem newItem) { // loading succeeded // store it in the cache logger.log(Level.INFO, "Completed read item from url" + item.getLogId()); writeStorageItemToLocalStorage(newItem); callback.onSuccess(newItem); } public void onFailure(StorageError error) { logger.log(Level.WARNING, "Failure url loading" + item.getLogId()); // nothing found, check if we must retrieve it from a remote location if (fallbackUrl != null && !fallbackUrl.isEmpty()) { readStorageItemFromUrl(fallbackUrl, item, getReadStorageItemHandler(item, callback, null)); } else { callback.onFailure(error); } } }; }
From source file:ch.gbrain.gwtstorage.manager.StorageManager.java
License:Apache License
/** * Read the JSON item asynch from the given url and the * standard name of the item eg. ch.gbrain.testapp.model.items-1.json * // w w w . j av a 2 s . c o m * @param url The url to read from eg. for local application relative path * "storage/v1/" eg. for remote location * "http://host.domain.ch/testapp/storage/v1/" * @param item * @param callback is called once the asynch action completed or failed * @return false if the asynchronous action invocation failed and no callback will be invoked */ public boolean readStorageItemFromUrl(String url, final StorageItem item, final Callback<StorageItem, StorageError> callback) { if (item == null) return false; try { Resource resource = new Resource(url + item.getJsonFileName() + "?noCache=" + new Date().getTime()); Method method = resource.get(); /** * if (username.isEmpty()) { method = resource.get(); }else { method = * resource.get().user(username).password(password); } */ logger.log(Level.INFO, "Read from url:" + method.builder.getUrl()); method.send(new JsonCallback() { public void onSuccess(Method method, JSONValue response) { logger.log(Level.INFO, "Read from url success"); if (response != null) { try { logger.log(Level.INFO, "Successfully url read" + item.getLogId()); item.fromJson(response); if (callback != null) { callback.onSuccess(item); } } catch (Exception ex) { logger.log(Level.SEVERE, "Failure url read" + item.getLogId(), ex); } } } public void onFailure(Method method, Throwable exception) { logger.log(Level.WARNING, "Failure url read" + item.getLogId(), exception); if (callback != null) { callback.onFailure(new StorageError(FileError.NOT_READABLE_ERR, exception.getMessage())); } } }); logger.log(Level.INFO, "Read from url call complete"); return true; } catch (Exception ex) { logger.log(Level.SEVERE, "Error url read" + item.getLogId(), ex); if (callback != null) { callback.onFailure(new StorageError(FileError.ABORT_ERR)); } } return false; }
From source file:ch.gbrain.gwtstorage.manager.StorageManager.java
License:Apache License
/** * Evaluates in case of the runtime (browser/phonegap) the full url where a * resource must be retrieved from. In case of Phonegap, it will check if we * have the resource already locally stored in the cache and return a url * pointing to this one instead.//w w w. ja va2 s . c o m * * @param relativeUrl of the resource as it is available in the application * itself. * @param version Check if the version of the stored resource equals. Not * checked if version=0 * @return true if the retrieval was invoked successfully, means you could expect a callback, false otherwise. */ public boolean retrieveResourceUrl(final String relativeUrl, Integer version, final Callback<String, FileError> callback) { try { if (relativeUrl == null || relativeUrl.isEmpty()) { if (callback != null) { logger.log(Level.INFO, "Web ResourceCacheReference retrieval impossible with invalid URL : " + relativeUrl); callback.onFailure( new StorageError(FileError.SYNTAX_ERR, "Invalid Url given : " + relativeUrl)); } return false; } if (!phonegap.isPhoneGapDevice()) { if (callback != null) { logger.log(Level.INFO, "Web ResourceCacheReference retrieval : " + relativeUrl); callback.onSuccess(relativeUrl); } return true; } // check if we have a cached resource (eg. with a corresponding cache item // in the storage) StorageResource resource = new StorageResource(relativeUrl, version, null); Boolean checkVersion = checkResourceVersion(resource); if (checkVersion == null) { logger.log(Level.INFO, "No resource cache item found for : " + relativeUrl + " / version:" + version); if (callback != null) { callback.onFailure(new StorageError(FileError.NOT_FOUND_ERR, "No resource cache item found")); } } else if (checkVersion == true) { // it should be there already and version is ok logger.log(Level.INFO, "Successful ResourceCacheReference retrieval : " + relativeUrl + " / version=" + version); getCacheDirectoryEntry(new Callback<DirectoryEntry, StorageError>() { public void onSuccess(DirectoryEntry dirEntry) { if (callback != null) { String localResourceUrl = dirEntry.toURL() + "/" + convertFilePathToFileName(relativeUrl); logger.log(Level.INFO, "Successful ResourceCacheUrl evaluation : " + localResourceUrl); callback.onSuccess(localResourceUrl); } } public void onFailure(StorageError error) { logger.log(Level.WARNING, "Failure in ResourceCacheUrl evaluation : " + relativeUrl + " error:" + error.getErrorCode()); if (callback != null) { callback.onFailure(error); } } }); return true; } else { logger.log(Level.INFO, "No matching resource cache item found for : " + relativeUrl + "version:" + version); } } catch (Exception ex) { logger.log(Level.SEVERE, "Exception resourceUrl evaluation for : " + relativeUrl, ex); } return false; }
From source file:ch.gbrain.gwtstorage.manager.StorageManager.java
License:Apache License
public boolean getCacheDirectoryEntry(final Callback<DirectoryEntry, StorageError> callback) { try {//from ww w . ja v a 2 s . co m if (cacheDirectoryEntry != null && callback != null) { callback.onSuccess(cacheDirectoryEntry); return true; } if (!phonegap.isPhoneGapDevice()) return false; String cacheDir = getCacheDirectory(); getLocalDirectoryEntry(cacheDir, new FileCallback<DirectoryEntry, StorageError>() { @Override public void onSuccess(DirectoryEntry entry) { logger.log(Level.INFO, "CacheDirectory successfully retrieved with path:" + entry.getFullPath()); cacheDirectoryEntry = entry; if (callback != null) { callback.onSuccess(entry); } } @Override public void onFailure(StorageError error) { logger.log(Level.SEVERE, "Failure Cache FileSystem Directory retrieval" + " : " + error.toString()); // stop the whole stuff, it doesn't work at all, we don't continue // here. Caching will not work therefore if (callback != null) { callback.onFailure(error); } } }); return true; } catch (Exception ex) { logger.log(Level.SEVERE, "Exception Cache FileSystem Directory retrieval", ex); } return false; }
From source file:client.managers.history.HistoryState.java
License:Open Source License
/** * Request an up-to-date {@code HistoryStateData}. * * @param callback {@code Callback} called when ready. *//*from w ww.j a v a 2s . com*/ public void getData(final Callback<HistoryStateData, Void> callback) { if (data != null) { callback.onSuccess(data); return; } dataCallbacks.add(callback); if (loadingData) { return; } loadingData = true; /* * Make RPC request */ WBIExplorationService.getStateData(this, new ClientRequest.Listener<HistoryStateData>() { @Override public void onSuccess(HistoryStateData data) { setData(data); // Call callbacks for (Callback<HistoryStateData, Void> callback : dataCallbacks) { callback.onSuccess(data); } dataCallbacks.clear(); } @Override public void onFailure(ClientRequest.Error error) { invalidateData(); // Call callbacks for (Callback<HistoryStateData, Void> callback : dataCallbacks) { callback.onFailure(null); } dataCallbacks.clear(); } }); }