Example usage for java.lang.ref WeakReference WeakReference

Introduction

In this page you can find the example usage for java.lang.ref WeakReference WeakReference.

Prototype

public WeakReference(T referent)

Source Link

Document

Creates a new weak reference that refers to the given object.

Usage

From source file:hudson.plugins.robot.RobotBuildAction.java

/**
 * Returns Robotresult. If not in memory loads it from disk.
 *///from w w w .  j  a  v a2  s. c  o  m
public synchronized RobotResult getResult() {
    RobotResult returnable;
    if (result != null)
        return result;
    if (resultReference == null) {
        returnable = load();
        resultReference = new WeakReference<RobotResult>(returnable);
    } else {
        returnable = resultReference.get();
    }

    if (returnable == null) {
        returnable = load();
        resultReference = new WeakReference<RobotResult>(returnable);
    }
    return returnable;
}

From source file:com.actionbarsherlock.internal.view.MenuItemImpl.java

public void setItemView(int type, MenuView.ItemView itemView) {
    mItemViews[type] = new WeakReference<MenuView.ItemView>(itemView);
}

From source file:com.bullmobi.base.content.ConfigBase.java

/**
 * Adds new {@link java.lang.ref.WeakReference weak} listener to the config. Make sure you call
 * {@link #unregisterListener(ConfigBase.OnConfigChangedListener)} later!
 *
 * @param listener a listener to register to config changes.
 * @see #unregisterListener(ConfigBase.OnConfigChangedListener)
 *//*from w  w  w  .j av  a  2s. co  m*/
@Override
public final void registerListener(@NonNull OnConfigChangedListener listener) {
    // Make sure to register listener only once.
    for (WeakReference<OnConfigChangedListener> ref : mListenersRefs) {
        if (ref.get() == listener) {
            Log.w(TAG, "Tried to register already registered listener!");
            return;
        }
    }

    mListenersRefs.add(new WeakReference<>(listener));
}

From source file:com.achep.base.content.ConfigBase.java

/**
 * Adds new {@link java.lang.ref.WeakReference weak} listener to the config. Make sure you call
 * {@link #unregisterListener(ConfigBase.OnConfigChangedListener)} later!
 *
 * @param listener a listener to register to config changes.
 * @see #unregisterListener(ConfigBase.OnConfigChangedListener)
 *//*from w  w  w.j  av a  2s .co  m*/
@Override
public final void registerListener(@NonNull OnConfigChangedListener listener) {
    // Make sure to register listener only once.
    for (WeakReference<OnConfigChangedListener> ref : mListenersRefs) {
        if (ref.get() == listener) {
            Timber.tag(TAG).w("Tried to register already registered listener!");
            return;
        }
    }

    mListenersRefs.add(new WeakReference<>(listener));
}

From source file:br.com.anteros.social.linkedin.AnterosLinkedInSession.java

@Override
public void setActivity(Activity activity) {
    this.activity = new WeakReference<Activity>(activity);
}

From source file:ch.entwine.weblounge.common.impl.content.AbstractResourceReaderImpl.java

/**
 * This method is called when a <code>Page</code> object is instantiated.
 * /*from   www . j a  va 2s  . c  om*/
 * @param is
 *          the xml input stream
 * @param uri
 *          the page uri
 * 
 * @throws IOException
 *           if reading the input stream fails
 */
public T read(InputStream is, Site site) throws SAXException, IOException, ParserConfigurationException {
    reset();
    resource = createResource(site);
    readHeader = true;
    readBody = true;
    SAXParser parser = parserRef.get();
    if (parser == null) {
        parser = parserFactory.newSAXParser();
        parserRef = new WeakReference<SAXParser>(parser);
    }
    parser.parse(is, this);
    return resource;
}

From source file:org.fastmongo.odm.dbobject.mapping.core.DbObjectToDomainConverterTest.java

@Test
public void testGarbageCollectedRootObjects() {
    DBObject db;//from   ww  w. ja  v  a2s  .co  m
    {
        Group root = TestDomainObjectsFixtures.createGroup(5, 10);
        db = toDbConverter.toDbObject(root);
    }

    Group root = fromDbConverter.fromDbObject(db, Group.class);
    Reference<Group> ref = new WeakReference<>(root);
    List<User> list = root.getUsers();

    Assert.assertNotNull(ref.get());

    //noinspection UnusedAssignment
    root = null;

    Runtime.getRuntime().gc();

    int limit = 10;
    int wait = 0;
    while (ref.get() != null && wait++ < limit) {
        if (ref.get() == null) {
            break;
        }

        LockSupport.parkNanos(TimeUnit.MILLISECONDS.toNanos(100)); // wait a bit
    }

    Assert.assertNull(ref.get());

    // touch proxy, it should not throw NPE as before
    Assert.assertTrue(!list.isEmpty());
}

From source file:com.frostwire.android.gui.adapters.TransferListAdapter.java

public TransferListAdapter(Context context, List<Transfer> list) {
    this.contextRef = new WeakReference<>(context);
    this.dialogs = new ArrayList<>();
    this.list = list.equals(Collections.emptyList()) ? new ArrayList<>() : list;
    viewOnClickListener = new ViewOnClickListener();
    viewOnLongClickListener = new ViewOnLongClickListener();
    openOnClickListener = new OpenOnClickListener(context);
    transferDetailsClickListener = new TransferDetailsClickListener(context);
}

From source file:ch.entwine.weblounge.common.impl.content.page.PageReader.java

/**
 * This method is called when a <code>Page</code> object is instantiated.
 * /*w w w .j a va2  s.  c  om*/
 * @param is
 *          the xml input stream
 * @param site
 *          the page's site
 * 
 * @throws IOException
 *           if reading the input stream fails
 */
public PageImpl read(InputStream is, Site site) throws SAXException, IOException, ParserConfigurationException {
    reset();
    page = new PageImpl(new PageURIImpl(site, "/"));
    readHeader = true;
    readBody = true;
    SAXParser parser = parserRef.get();
    if (parser == null) {
        parser = parserFactory.newSAXParser();
        parserRef = new WeakReference<SAXParser>(parser);
    }
    parser.parse(is, this);
    return page;
}

From source file:com.bekwam.mavenpomupdater.Main.java

@Override
public void start(Stage primaryStage) throws Exception {

    ////from  ww  w . ja  v a 2s . co m
    // handle command line options
    //
    Application.Parameters params = getParameters();

    List<String> unnamedList = params.getUnnamed();

    Options options = new Options();
    options.addOption("help", false, "Print this message");
    options.addOption("hidpi", false, "Use high-DPI scaling");

    CommandLineParser p = new BasicParser();
    CommandLine cmd = p.parse(options, unnamedList.toArray(new String[0]));

    HelpFormatter formatter = new HelpFormatter();

    if (cmd.hasOption("help")) {
        if (log.isDebugEnabled()) {
            log.debug("[START] running as help command");
        }
        formatter.printHelp("Main", options);
        return;
    }

    AbstractModule module = null;
    if (runningAsJNLP()) {

        if (log.isInfoEnabled()) {
            log.info("using jnlp module and jnlp favorites store");
        }
        module = new MPUJNLPModule();
    } else {

        if (log.isInfoEnabled()) {
            log.info("using standalone module and in-memory favorites store");
        }
        module = new MPUStandaloneModule();
    }

    //
    // setup google guice
    //
    final Injector injector = Guice.createInjector(module);

    BuilderFactory builderFactory = new JavaFXBuilderFactory();

    Callback<Class<?>, Object> guiceControllerFactory = clazz -> injector.getInstance(clazz);

    //
    // setup icons
    //
    primaryStage.getIcons().add(new Image("images/mpu_icon_64.png"));

    //
    // load fxml and wire controllers
    //
    FXMLLoader mainViewLoader = new FXMLLoader(getClass().getResource("mavenpomupdater.fxml"), null,
            builderFactory, guiceControllerFactory);
    Parent mainView = mainViewLoader.load();
    MainViewController mainViewController = mainViewLoader.getController();

    FXMLLoader alertViewLoader = new FXMLLoader(getClass().getResource("alert.fxml"), null, builderFactory,
            guiceControllerFactory);
    Parent alertView = alertViewLoader.load();

    //
    // i'm continuing this manual wiring to 1) accommodate a potential
    // bi-directional reference problem and 2) to make sure that guice
    // doesn't return different object for the main -> alert and alert ->
    // main dependency injections
    //

    final AlertController alertController = alertViewLoader.getController();
    mainViewController.alertController = alertController;
    alertController.mainViewControllerRef = new WeakReference<MainViewController>(mainViewController);

    //
    // add FlowPane, StackPane objects (defined in program and outside of 
    // FXML)
    //
    final FlowPane fp = new FlowPane();
    fp.setAlignment(Pos.CENTER);
    fp.getChildren().add(alertView);
    fp.getStyleClass().add("alert-background-pane");

    final StackPane sp = new StackPane();
    sp.getChildren().add(fp); // initially hide the alert
    sp.getChildren().add(mainView);

    //
    // setup scene
    //
    Scene scene = new Scene(sp);
    scene.getStylesheets().add("com/bekwam/mavenpomupdater/mpu.css");

    scene.setOnKeyPressed(keyEvent -> {
        KeyCode key = keyEvent.getCode();
        if (key == KeyCode.ESCAPE && (sp.getChildren().get(1) == fp)) {
            if (log.isDebugEnabled()) {
                log.debug("[ESCAPE]");
            }
            alertController.action();
        }
    });

    //
    // setup stage
    //
    primaryStage.setTitle("Maven POM Version Updater");
    primaryStage.setScene(scene);

    if (cmd.hasOption("hidpi")) {

        if (log.isInfoEnabled()) {
            log.info("running in Hi-DPI display mode");
        }
        primaryStage.setWidth(2560.0);
        primaryStage.setHeight(1440.0);
        primaryStage.setMinWidth(1920.0);
        primaryStage.setMinHeight(1080.0);

        mainViewController.adjustForHiDPI();

    } else {
        if (log.isInfoEnabled()) {
            log.info("running in normal display mode");
        }

        primaryStage.setWidth(1280.0);
        primaryStage.setHeight(800.0);
        primaryStage.setMinWidth(1024.0);
        primaryStage.setMinHeight(768.0);

    }

    primaryStage.show();
}