Example usage for java.lang.ref SoftReference SoftReference

Introduction

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

Prototype

public SoftReference(T referent)

Source Link

Document

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

Usage

From source file:org.sleuthkit.autopsy.corecomponents.ThumbnailViewNode.java

@Override
@NbBundle.Messages({ "# {0} - file name",
        "ThumbnailViewNode.progressHandle.text=Generating thumbnail for {0}" })
public Image getIcon(int type) {
    Image icon = null;/*from ww w .j a v  a  2  s  .  c o  m*/

    if (iconCache != null) {
        icon = iconCache.get();
    }

    if (icon != null) {
        return icon;
    } else {
        final Content content = this.getLookup().lookup(Content.class);
        if (content == null) {
            return ImageUtils.getDefaultThumbnail();
        }
        if (swingWorker == null || swingWorker.isDone()) {
            swingWorker = new SwingWorker<Image, Object>() {
                final private ProgressHandle progressHandle = ProgressHandle
                        .createHandle(Bundle.ThumbnailViewNode_progressHandle_text(content.getName()));

                @Override
                protected Image doInBackground() throws Exception {
                    progressHandle.start();
                    return ImageUtils.getThumbnail(content, iconSize);
                }

                @Override
                protected void done() {
                    super.done();
                    try {
                        iconCache = new SoftReference<>(super.get());
                        fireIconChange();
                    } catch (InterruptedException | ExecutionException ex) {
                        Logger.getLogger(ThumbnailViewNode.class.getName()).log(Level.SEVERE,
                                "Error getting thumbnail icon for " + content.getName(), ex); //NON-NLS
                    } finally {
                        progressHandle.finish();
                        if (timer != null) {
                            timer.stop();
                            timer = null;

                        }
                        swingWorker = null;
                    }
                }
            };
            swingWorker.execute();
        }
        if (timer == null) {
            timer = new Timer(100, (ActionEvent e) -> {
                fireIconChange();
            });
            timer.start();
        }
        return waitingIcon;
    }
}

From source file:com.sqkj.engine.image.ImageCache.java

private void init(ImageCacheParams cacheParams) {
    mCacheParams = cacheParams;//from   w ww.  j  av a 2s.  c  om
    if (mCacheParams.memoryCacheEnabled) {
        WaterDropsLog.v("Memory cache created (size = " + mCacheParams.memCacheSize + ")");
        if (SdkUtils.hasHoneycomb()) {
            mReusableBitmaps = Collections.synchronizedSet(new HashSet<SoftReference<Bitmap>>());
        }
        mMemoryCache = new LruCache<String, BitmapDrawable>(mCacheParams.memCacheSize) {
            @Override
            protected void entryRemoved(boolean evicted, String key, BitmapDrawable oldValue,
                    BitmapDrawable newValue) {
                if (RecyclingBitmapDrawable.class.isInstance(oldValue)) {
                    ((RecyclingBitmapDrawable) oldValue).setIsCached(false);
                } else {
                    if (SdkUtils.hasHoneycomb()) {
                        mReusableBitmaps.add(new SoftReference<Bitmap>(oldValue.getBitmap()));
                    }
                }
            }

            @Override
            protected int sizeOf(String key, BitmapDrawable value) {
                final int bitmapSize = getBitmapSize(value) / 1024;
                WaterDropsLog.d("@@@@@@Bitmap Size==>" + bitmapSize);
                return bitmapSize == 0 ? 1 : bitmapSize;
            }
        };
    }
}

From source file:ProxyFactory.java

private synchronized Constructor getConstructor() {
    Constructor ctor = ctorRef == null ? null : (Constructor) ctorRef.get();

    if (ctor == null) {
        try {/*from  ww  w . j a  va2 s  .  co  m*/
            ctor = Proxy.getProxyClass(getClass().getClassLoader(), interfaces)
                    .getConstructor(new Class[] { InvocationHandler.class });
        } catch (NoSuchMethodException e) {
            throw new InternalError(e.toString());
        }

        ctorRef = new SoftReference(ctor);
    }

    return ctor;
}

From source file:com.pironet.tda.LogFileContent.java

/**
 * read the content in the soft reference object, currently used
 * StringBuffer to maintain 1.4 compability. Should be switched
 * to StringReader if switched to 1.5 for better performance as
 * synchronization is not needed here./* w  w  w  . ja  va 2s  .c  om*/
 */
private void readContent() {
    final StringBuffer contentReader = new StringBuffer();
    BufferedReader br = null;
    try {
        br = new BufferedReader(new FileReader(getLogfile()));
        while (br.ready()) {
            contentReader.append(br.readLine());
            contentReader.append('\n');
        }
    } catch (IOException ex) {
        ex.printStackTrace();
        contentReader.append("The Logfile unavailable! ").append(ex.getMessage());
    } finally {
        IOUtils.closeQuietly(br);
    }
    content = new SoftReference<>(contentReader);
}

From source file:be.fedict.trust.crl.CachedCrlRepository.java

private X509CRL refreshCrl(URI crlUri, X509Certificate issuerCertificate, Date validationDate) {
    X509CRL crl = this.crlRepository.findCrl(crlUri, issuerCertificate, validationDate);
    this.crlCache.put(crlUri, new SoftReference<X509CRL>(crl));
    return crl;//  ww w  . j ava  2  s . c  o m
}

From source file:edu.usc.goffish.gofs.formats.gml.KeyValuePair.java

@Override
public final String ValueAsString() {
    if (_cachedString != null) {
        String s = _cachedString.get();
        if (s != null) {
            return s;
        }/*from ww w . j  ava2  s  .c  o m*/
    }

    boolean foundAmpersand = false;
    for (int i = 0; i < _value.length; i++) {
        if (_value[i] == '&') {
            foundAmpersand = true;
            break;
        }
    }

    String value = new String(_value);
    if (foundAmpersand) {
        value = StringEscapeUtils.unescapeHtml(value);
    }
    _cachedString = new SoftReference<String>(value);
    return value;
}

From source file:org.appcelerator.titanium.view.TiDrawableReference.java

public TiDrawableReference(Activity activity, DrawableReferenceType type) {
    this.type = type;
    softActivity = new SoftReference<Activity>(activity);
    ApplicationInfo appInfo;/*from w w w. j av a2 s .  c  om*/

    if (activity != null) {
        appInfo = activity.getApplicationInfo();
    } else {
        appInfo = TiApplication.getInstance().getApplicationInfo();
    }
    anyDensityFalse = (appInfo.flags & ApplicationInfo.FLAG_SUPPORTS_SCREEN_DENSITIES) == 0;
}

From source file:org.codehaus.groovy.grails.commons.metaclass.WeakGenericDynamicProperty.java

public Object get(Object object) {
    String propertyKey = System.identityHashCode(object) + getPropertyName();

    SoftReference<Object> ref = propertyToInstanceMap.get(propertyKey);
    Object val = (ref != null) ? ref.get() : null;
    if (val != null) {
        return val;
    } else if (this.initialValueGenerator != null) {
        final Object value = this.initialValueGenerator.execute(object);
        propertyToInstanceMap.put(propertyKey, new SoftReference<Object>(value));
        return value;
    } else if (this.initialValue != null) {
        propertyToInstanceMap.put(propertyKey, new SoftReference<Object>(this.initialValue));
        return this.initialValue;
    }/*from w w w  . j  ava 2s  . co  m*/
    return null;
}

From source file:pl.otros.logview.gui.LogViewPanelWrapper.java

public LogViewPanelWrapper(String name, Stoppable stoppable, TableColumns[] visibleColumns,
        LogDataTableModel logDataTableModel, DataConfiguration configuration,
        OtrosApplication otrosApplication) {
    this.name = name;
    this.configuration = configuration;
    this.otrosApplication = otrosApplication;
    this.addHierarchyListener(new HierarchyListener() {

        @Override/*w  ww. j  av  a2 s  .  co m*/
        public void hierarchyChanged(HierarchyEvent e) {
            if (e.getChangeFlags() == 1 && e.getChanged().getParent() == null) {
                LOGGER.info("Log view panel is removed from view. Clearing data table for GC");
                dataTableModel.clear();
            }
        }
    });
    if (visibleColumns == null) {
        visibleColumns = TableColumns.ALL_WITHOUT_LOG_SOURCE;
    }

    fillDefaultConfiguration();

    stopableReference = new SoftReference<Stoppable>(stoppable);
    // this.statusObserver = statusObserver;
    dataTableModel = logDataTableModel == null ? new LogDataTableModel() : logDataTableModel;
    logViewPanel = new LogViewPanel(dataTableModel, visibleColumns, otrosApplication);

    cardLayout = new CardLayout();
    JPanel panelLoading = new JPanel(new GridBagLayout());
    GridBagConstraints c = new GridBagConstraints();
    c.insets = new Insets(10, 10, 10, 10);
    c.anchor = GridBagConstraints.PAGE_START;
    c.fill = GridBagConstraints.HORIZONTAL;
    c.gridx = 0;
    c.gridy = 0;
    c.ipadx = 1;
    c.ipady = 1;
    c.weightx = 10;
    c.weighty = 1;

    JLabel label = new JLabel("Loading file " + name);
    panelLoading.add(label, c);
    c.gridy++;
    c.weighty = 3;
    loadingProgressBar = new JProgressBar();
    loadingProgressBar.setIndeterminate(false);
    loadingProgressBar.setStringPainted(true);
    loadingProgressBar.setString("Connecting...");
    panelLoading.add(loadingProgressBar, c);
    statsTable = new JTable();

    c.gridy++;
    c.weighty = 1;
    c.weightx = 2;
    panelLoading.add(statsTable, c);
    c.gridy++;
    c.weightx = 1;
    stopButton = new JButton("Stop, you have imported already enough!");
    stopButton.addActionListener(new ActionListener() {

        @Override
        public void actionPerformed(ActionEvent e) {
            Stoppable stoppable = stopableReference.get();
            if (stoppable != null) {
                stoppable.stop();
            }
        }
    });
    panelLoading.add(stopButton, c);

    setLayout(cardLayout);
    add(panelLoading, CARD_LAYOUT_LOADING);
    add(logViewPanel, CARD_LAYOUT_CONTENT);
    cardLayout.show(this, CARD_LAYOUT_LOADING);

}

From source file:net.sf.maltcms.chromaui.charts.tooltips.RTIXYTooltipGenerator.java

/**
 *
 * @param xyd//from  www.j  a  v a2  s .  c  o m
 * @param i
 * @param i1
 * @return
 */
@Override
public String generateToolTip(XYDataset xyd, int i, int i1) {
    Point p = new Point(i, i1);
    if (hm.containsKey(p)) {
        SoftReference<String> sr = hm.get(p);
        if (sr.get() != null) {
            return sr.get();
        }
    } else {
        StringBuilder sb = new StringBuilder();
        int x = (int) xyd.getXValue(i, i1);
        int y = (int) xyd.getYValue(i, i1);
        double z = Double.NaN;
        if (xyd instanceof XYZDataset) {
            z = ((XYZDataset) xyd).getZValue(i, i1);
        }
        if (x >= 0 && x < lookup.length && y >= 0 && y < scansPerModulation) {
            sb.append("[ SCAN1: ");
            sb.append(x);
            sb.append(", SCAN2: " + y + " ]");
            sb.append(" at [ RT1: ");
            sb.append(lookup[x]);
            sb.append(" s, RT2: ");
            float off = (this.modulationTime * ((float) y / (float) (this.scansPerModulation)));
            sb.append(lookup[x] + off);
            sb.append("s ]");
            if (xyd instanceof XYZDataset) {
                sb.append(" = ");
                sb.append(z);
            }
            String s = sb.toString();
            SoftReference<String> sr = new SoftReference<>(s);
            hm.put(p, sr);
            return s;
        }
        return "";
    }
    return null;

}