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.apache.ojb.broker.cache.ObjectCacheLocalDefaultImpl.java

/**
 * Makes object persistent to the Objectcache.
 * I'm using soft-references to allow gc reclaim unused objects
 * even if they are still cached.//from  www. j  av a 2  s .  c  om
 */
public void cache(Identity oid, Object obj) {
    if ((obj != null)) {
        SoftReference ref = new SoftReference(new CacheEntry(obj));
        objectTable.put(oid, ref);
    }
}

From source file:myfightinglayoutbugs.ScreenshotCache.java

@Nonnull
public Screenshot getScreenshot(Condition condition) {
    SoftReference<Screenshot> softReference = _memoryCache.get(condition);
    Screenshot screenshot;//  www.  j  a  va 2 s. com
    if (softReference == null) {
        // Cache miss, take screenshot ...
        screenshot = takeScreenshot(condition);
        // ... and cache it ...
        _memoryCache.put(condition, new SoftReference<Screenshot>(screenshot));
        _diskCache.put(condition, saveToTempFile(screenshot));
    } else {
        screenshot = softReference.get();
        if (screenshot == null) {
            // screenshot in _memoryCache was garbage collected, read it from _diskCache ...
            File file = _diskCache.get(condition);
            screenshot = readFromFile(file);
            // ... and put it into _memoryCache again ...
            _memoryCache.put(condition, new SoftReference<Screenshot>(screenshot));
        }
    }
    return screenshot;
}

From source file:org.appcelerator.titanium.util.TiDownloadManager.java

protected void startDownload(URI uri, TiDownloadListener listener) {
    String hash = DigestUtils.shaHex(uri.toString());
    ArrayList<SoftReference<TiDownloadListener>> listenerList = null;
    synchronized (listeners) {
        if (!listeners.containsKey(hash)) {
            listenerList = new ArrayList<SoftReference<TiDownloadListener>>();
            listeners.put(hash, listenerList);
        } else {/*from  www . j  a v a2  s .  c  o m*/
            listenerList = listeners.get(hash);
        }
        // We only allow a listener once per URI
        for (SoftReference<TiDownloadListener> l : listenerList) {
            if (l.get() == listener) {
                return;
            }
        }
        listenerList.add(new SoftReference<TiDownloadListener>(listener));
    }
    synchronized (downloadingURIs) {
        if (!downloadingURIs.contains(hash)) {
            downloadingURIs.add(hash);
            threadPool.execute(new DownloadJob(uri));
        }
    }
}

From source file:com.taobao.common.tedis.cache.DefaultLocalCache.java

public V put(K key, V value, Date expiry) {
    SoftReference<V> result = getCache(key).put(key, new SoftReference<V>(value));
    expiryCache.put(key, expiry.getTime());

    return result == null ? null : result.get();
}

From source file:org.copperengine.core.persistent.hybrid.StorageCache.java

@Override
public ListenableFuture<Void> safeEarlyResponse(String correlationId, String serializedResponse)
        throws Exception {
    earCache.put(correlationId, new SoftReference<String>(serializedResponse));
    return delegate.safeEarlyResponse(correlationId, serializedResponse);
}

From source file:com.anrisoftware.prefdialog.miscswing.dialogsworker.AbstractCreateDialogWorker.java

/**
 * Returns the dialog. If not already created, the dialog is created on the
 * AWT event thread./*  www.ja  v a  2s  .c  om*/
 *
 * @return the dialog.
 *
 * @throws CreateDialogWorkerException
 *             if there was an error creating the dialog.
 *
 * @throws CreateDialogInterrupedException
 *             if the dialog creation on the AWT event thread was
 *             interrupted.
 */
public synchronized DialogType getDialog() throws CreateDialogWorkerException, CreateDialogInterrupedException {
    if (needRecreateDialog()) {
        this.dialog = new SoftReference<DialogType>(doCreateDialog());
    }
    return dialog.get();
}

From source file:org.knime.knip.base.data.ObjectRepository.java

/**
 * Caches an object. Can be retrieved by {@link #getCachedObject(MemoryReleasable)}, if not deleted.
 *
 * @param obj/*from w ww  .j  ava 2  s.com*/
 */
@SuppressWarnings("javadoc")
public final void cacheObject(final Object obj) {
    synchronized (CACHED_OBJECTS) {
        final SoftReference<Object> ref = new SoftReference<Object>(obj);
        CACHED_OBJECTS.put(obj.hashCode(), ref);
        ref.get();
        LOGGER.debug("Cached another object!");
    }

}

From source file:com.eviware.soapui.security.log.SecurityTestLogModel.java

/**
 * called before TestStep SecurityScans just to mark beginning of TestStep
 * SecurityLog part to be updated after step scans finish with proper values
 * // www  . j  a  v a  2s  .  c  o  m
 * @return true - if added, false - otherwise
 */
public synchronized boolean addSecurityTestStepResult(TestStep testStep) {
    stepCount++;
    checkCount = 0;

    currentStepEntriesCount = 1;
    int size = items.size();
    if (AbstractSecurityScan.isSecurable(testStep)) {
        SecurityTestStepResult result = new SecurityTestStepResult(testStep, null);
        SoftReference<SecurityResult> stepResultRef = new SoftReference<SecurityResult>(result);
        items.add("Step " + stepCount + " [" + result.getTestStep().getName() + "] ");
        results.add(stepResultRef);

        fireIntervalAdded(this, size, items.size() - 1);
        enforceMaxSize();
        return true;
    } else
        return false;
}

From source file:com.siahmsoft.soundroid.sdk7.util.ImageUtilities.java

/**
 * Retrieves a drawable from the book covers cache, identified by the specified id.
 * If the drawable does not exist in the cache, it is loaded and added to the cache.
 * If the drawable cannot be added to the cache, the specified default drwaable is
 * returned./*from  w  ww .  jav a2 s.com*/
 *
 * @param id The id of the drawable to retrieve
 * @param defaultCover The default drawable returned if no drawable can be found that
 *         matches the id
 *
 * @return The drawable identified by id or defaultCover
 */
public static FastBitmapDrawable getCachedCover(String id, FastBitmapDrawable defaultCover) {
    FastBitmapDrawable drawable = null;

    SoftReference<FastBitmapDrawable> reference = sArtCache.get(id);
    if (reference != null) {
        drawable = reference.get();
    }

    if (drawable == null || drawable == NULL_DRAWABLE) {
        final Bitmap bitmap = loadCover(id);
        if (bitmap != null) {
            drawable = new FastBitmapDrawable(bitmap);
        } else {
            drawable = NULL_DRAWABLE;
        }

        sArtCache.put(id, new SoftReference<FastBitmapDrawable>(drawable));
    }

    return drawable == NULL_DRAWABLE ? defaultCover : drawable;
}

From source file:com.guang.eunormia.common.cache.DefaultLocalCache.java

@Override
public V put(K key, V value, Date expiry) {
    SoftReference<V> result = getCache(key).put(key, new SoftReference<V>(value));
    expiryCache.put(key, expiry.getTime());

    return result == null ? null : result.get();
}