Example usage for java.util WeakHashMap WeakHashMap

Introduction

In this page you can find the example usage for java.util WeakHashMap WeakHashMap.

Prototype

public WeakHashMap()

Source Link

Document

Constructs a new, empty WeakHashMap with the default initial capacity (16) and load factor (0.75).

Usage

From source file:com.jaspersoft.jasperserver.api.metadata.common.domain.util.FileBufferedOutputStream.java

public FileBufferedOutputStream(int memoryThreshold, int initialMemoryBufferSize, int inputBufferLength) {
    this.memoryThreshold = memoryThreshold;
    this.initialMemoryBufferSize = initialMemoryBufferSize;
    this.inputBufferLength = inputBufferLength;

    size = 0;/*from  ww w.ja  va2 s  . co  m*/
    if (this.memoryThreshold == 0) {
        memoryOutput = null;
    } else {
        int initialSize = this.initialMemoryBufferSize;
        if (initialSize > this.memoryThreshold) {
            initialSize = this.memoryThreshold;
        }
        memoryOutput = new ByteArrayOutputStream(initialSize);
    }

    this.inputStreams = new WeakHashMap<DataStream, Boolean>();
}

From source file:org.openmrs.module.ModuleClassLoader.java

/**
 * @param module Module/*from ww w  .j a va2 s.c o m*/
 * @param urls resources "managed" by this class loader
 * @param parent parent class loader
 * @param factory URL stream handler factory
 * @see URLClassLoader#URLClassLoader(java.net.URL[], java.lang.ClassLoader,
 *      java.net.URLStreamHandlerFactory)
 */
protected ModuleClassLoader(final Module module, final List<URL> urls, final ClassLoader parent,
        final URLStreamHandlerFactory factory) {
    super(urls.toArray(new URL[urls.size()]), parent, factory);

    if (parent instanceof OpenmrsClassLoader) {
        throw new IllegalArgumentException("Parent must not be OpenmrsClassLoader nor null");
    } else if (parent instanceof ModuleClassLoader) {
        throw new IllegalArgumentException("Parent must not be ModuleClassLoader");
    }

    if (log.isDebugEnabled()) {
        log.debug("URLs length: " + urls.size());
    }
    this.module = module;
    requiredModules = collectRequiredModuleImports(module);
    awareOfModules = collectAwareOfModuleImports(module);
    libraryCache = new WeakHashMap<URI, File>();
}

From source file:org.eknet.neoswing.view.DefaultVisualizationViewFactory.java

@Override
public VisualizationViewer<Vertex, Edge> createViewer(Graph<Vertex, Edge> graph, GraphDb db) {
    final VisualizationViewer<Vertex, Edge> vv = new VisualizationViewer<Vertex, Edge>(
            new FRLayout2<Vertex, Edge>(graph));
    vv.getModel().getRelaxer().setSleepTime(0);
    DefaultModalGraphMouse<Vertex, Edge> mouseSupport = new DefaultModalGraphMouse<Vertex, Edge>();
    final GraphModel model = new SimpleGraphModel(graph, vv, db);
    addMousePlugins(mouseSupport, model);
    vv.setGraphMouse(mouseSupport);//from w  w  w .j  a v  a2s  .  c  o m
    vv.addKeyListener(mouseSupport.getModeKeyListener());
    vv.setToolTipText("<html><center>Type 'p' for Pick mode<p>Type 't' for Transform mode");

    VertexLabelAsShapeRenderer<Vertex, Edge> vertexShape = new VertexLabelAsShapeRenderer<Vertex, Edge>(
            vv.getRenderContext()) {
        @Override
        public Shape transform(Vertex v) {
            Rectangle rect = (Rectangle) super.transform(v);
            return new RoundRectangle2D.Double(rect.x - 3, rect.y - 3, rect.width + 7, rect.height + 7, 10, 10);
        }
    };

    vertexShape.setPosition(Renderer.VertexLabel.Position.CNTR);
    vv.setBackground(Color.WHITE);
    vv.getRenderContext().setVertexShapeTransformer(vertexShape);
    vv.getRenderContext().setVertexLabelTransformer(new VertexTransformer(model));
    vv.getRenderer().setVertexLabelRenderer(vertexShape);
    vv.getRenderContext().setVertexFillPaintTransformer(new Transformer<Vertex, Paint>() {
        private Color nodefill = Color.getHSBColor(207, 19, 97);

        @Override
        public Paint transform(Vertex v) {
            //        if (v.getId() == 0) {
            //          return Color.green;
            //        }
            return nodefill;
        }
    });

    vv.getRenderContext().setEdgeLabelTransformer(new Transformer<Edge, String>() {

        private final WeakHashMap<Object, String> cache = new WeakHashMap<Object, String>();

        @Override
        public String transform(final Edge e) {
            String s = cache.get(e.getId());
            if (s == null) {
                s = "<null>";
                GraphDb.Tx tx = model.getDatabase().beginTx();
                try {
                    Edge edge = model.getDatabase().lookupEdge(e.getId());
                    s = edge.getLabel();
                    tx.success();
                    cache.put(edge.getId(), s);
                } catch (Exception e1) {
                    log.error("Error obtaining edge label", e1);
                } finally {
                    tx.finish();
                }
            }
            return s;
        }
    });

    return vv;
}

From source file:org.esa.snap.timeseries.ui.graph.TimeSeriesGraphModel.java

TimeSeriesGraphModel(XYPlot plot, Validation validation) {
    timeSeriesPlot = plot;/*from  w  w  w  . ja v a  2 s . c  o m*/
    this.validation = validation;
    validation.addValidationListener(() -> {
        updateTimeSeries(null, TimeSeriesType.INSITU);
        updateTimeSeries(null, TimeSeriesType.PIN);
    });
    eoVariableBands = new ArrayList<>();
    displayControllerMap = new WeakHashMap<>();
    workerChainSupport = createWorkerChainSupport();
    workerChain = new WorkerChain();
    initPlot();
}

From source file:uk.ac.cam.cl.dtg.segue.auth.FacebookAuthenticator.java

/**
 * @param clientId The registered Facebook client ID
 * @param clientSecret The client secret provided by the Facebook api (https://developers.facebook.com/apps/)
 * @param callbackUri The callback url from the oauth process
 * @param requestedScopes The facebook permissions requested by this application
 */// w  w w . j a va 2  s. c o  m
@Inject
public FacebookAuthenticator(@Named(Constants.FACEBOOK_CLIENT_ID) final String clientId,
        @Named(Constants.FACEBOOK_SECRET) final String clientSecret,
        @Named(Constants.FACEBOOK_CALLBACK_URI) final String callbackUri,
        @Named(Constants.FACEBOOK_OAUTH_SCOPES) final String requestedScopes) {
    this.jsonFactory = new JacksonFactory();
    this.httpTransport = new NetHttpTransport();

    this.clientSecret = clientSecret;
    this.clientId = clientId;
    this.callbackUri = callbackUri;
    this.requestedScopes = Arrays.asList(requestedScopes.split(","));

    if (null == credentialStore) {
        credentialStore = new WeakHashMap<>();
    }

    if (null == tokenVerifier) {
        tokenVerifier = new GoogleIdTokenVerifier(httpTransport, jsonFactory);
    }
}

From source file:org.enerj.apache.commons.beanutils.BeanificationTestCase.java

/** Tests whether classloaders and beans are released from memory by the map used by beanutils */
public void testMemoryLeak2() throws Exception {
    // tests when the map used by beanutils has the right behaviour

    if (isPre14JVM()) {
        System.out.println("WARNING: CANNOT TEST MEMORY LEAK ON PRE1.4 JVM");
        return;// w w  w  . jav  a2s  . c  o  m
    }

    // many thanks to Juozas Baliuka for suggesting this methodology
    TestClassLoader loader = new TestClassLoader();
    ReferenceQueue queue = new ReferenceQueue();
    WeakReference loaderReference = new WeakReference(loader, queue);
    Integer test = new Integer(1);

    WeakReference testReference = new WeakReference(test, queue);
    //Map map = new ReferenceMap(ReferenceMap.WEAK, ReferenceMap.HARD, true);
    Map map = new WeakHashMap();
    map.put(loader, test);

    assertEquals("In map", test, map.get(loader));
    assertNotNull("Weak reference released early (1)", loaderReference.get());
    assertNotNull("Weak reference released early (2)", testReference.get());

    // dereference strong references
    loader = null;
    test = null;

    int iterations = 0;
    int bytz = 2;
    while (true) {
        System.gc();
        if (iterations++ > MAX_GC_ITERATIONS) {
            fail("Max iterations reached before resource released.");
        }
        map.isEmpty();

        if (loaderReference.get() == null && testReference.get() == null) {
            break;

        } else {
            // create garbage:
            byte[] b = new byte[bytz];
            bytz = bytz * 2;
        }
    }
}

From source file:org.shaman.terrain.sketch.SketchTerrain.java

public SketchTerrain() {
    this.featureCurves = new ArrayList<>();
    this.featureCurveNodes = new ArrayList<>();
    this.featureCurveMesh = new ArrayList<>();
    this.presets = DefaultCurvePresets.DEFAULT_PRESETS;
    this.controlPointMap = new WeakHashMap<>();
}

From source file:WeakHashSet.java

/**
 * Constructs a new, empty set; the backing <tt>WeakHashMap</tt> instance has
 * default initial capacity (16) and load factor (0.75).
 *///from w w w.j  av a 2s.  c o m
public WeakHashSet() {
    map = new WeakHashMap();
}

From source file:org.esa.beam.timeseries.ui.graph.TimeSeriesGraphModel.java

TimeSeriesGraphModel(XYPlot plot, Validation validation) {
    timeSeriesPlot = plot;//from  w  w  w  .j av a2s .  c  o m
    this.validation = validation;
    validation.addValidationListener(new ValidationListener() {
        @Override
        public void expressionChanged() {
            updateTimeSeries(null, TimeSeriesType.INSITU);
            updateTimeSeries(null, TimeSeriesType.PIN);
        }
    });
    eoVariableBands = new ArrayList<List<Band>>();
    displayControllerMap = new WeakHashMap<AbstractTimeSeries, TimeSeriesGraphDisplayController>();
    workerChainSupport = createWorkerChainSupport();
    workerChain = new WorkerChain();
    initPlot();
}

From source file:org.jhotdraw.samples.svg.figures.SVGImage.java

public SVGImage clone() {
    SVGImage that = (SVGImage) super.clone();
    that.bounds = (Rectangle2D.Double) bounds.clone();
    that.scaledImages = new WeakHashMap<Double, BufferedImage>();
    return that;/*www .j  a  v a2  s . co  m*/
}