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:com.twapime.app.util.AsyncImageLoader.java

/**
 * @param context/*from   www  .j  a  v a 2  s .  co  m*/
 */
private AsyncImageLoader(Context context) {
    this.context = context;
    //
    urlsBeingDownloaded = new Vector<String>();
    callbacks = new HashMap<String, List<ImageLoaderCallback>>();
    hardCache = new LinkedHashMap<String, Drawable>(HARD_CACHE_CAPACITY, 0.75f, true) {
        private static final long serialVersionUID = -4795168423098442895L;

        @Override
        protected boolean removeEldestEntry(LinkedHashMap.Entry<String, Drawable> eldest) {
            if (size() > HARD_CACHE_CAPACITY) {
                softCache.put(eldest.getKey(), new SoftReference<Drawable>(eldest.getValue()));
                //
                return true;
            } else
                return false;
        }
    };
    softCache = new ConcurrentHashMap<String, SoftReference<Drawable>>(HARD_CACHE_CAPACITY / 2);
    //
    loadCacheDir();
}

From source file:com.irurueta.server.commons.email.ApacheMailSender.java

/**
 * Returns or creates singleton instance of this class.
 * @return singleton of this class./* www.  ja  v  a 2s .c  o m*/
 */
public static synchronized ApacheMailSender getInstance() {
    ApacheMailSender sender;
    if (mReference == null || (sender = mReference.get()) == null) {
        sender = new ApacheMailSender();
        mReference = new SoftReference<>(sender);
    }
    return sender;
}

From source file:org.diorite.impl.world.io.ChunkRegionCache.java

public ChunkRegion getChunkRegion(final int regionX, final int regionZ) {
    final long key = BigEndianUtils.toLong(regionX, regionZ);
    final File file = new File(this.regionDir, "r." + regionX + "." + regionZ + this.extension);

    final Reference<ChunkRegion> ref = this.cache.get(key);

    if ((ref != null) && (ref.get() != null)) {
        return ref.get();
    }/*w w  w. j a v  a2 s . co m*/

    if (!this.regionDir.isDirectory() && !this.regionDir.mkdirs()) {
        System.err.println("[WorldIO] Failed to create directory: " + this.regionDir);
    }

    if (this.cache.size() >= this.maxCacheSize) {
        this.clear();
    }

    final ChunkRegion reg = this.createNewRegion(file, regionX, regionZ);
    synchronized (this.cache) {
        this.cache.put(key, new SoftReference<>(reg));
    }
    return reg;
}

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

public V put(K key, V value) {
    SoftReference<V> result = getCache(key).put(key, new SoftReference<V>(value));
    expiryCache.put(key, -1L);/*from  ww  w. j  a v a  2s  .c  o m*/

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

From source file:com.slytechs.capture.file.indexer.SoftTable.java

/**
 * @param i//from   w  w  w  . ja  v a  2s  .  co m
 * @param index
 * @throws IOException
 */
private long[] fetchIndexes() throws IOException {
    if (this.positions.get() != null) {
        return positions.get(); // Nothing to do
    }

    final long[] positions = new long[length];
    // Arrays.fill(positions, -1);

    final BasicRecordIterator iterator = new BasicRecordIterator(loader, loader.getLengthGetter());

    iterator.setPosition(first);

    for (int i = 0; i < length; i++) {
        positions[i] = iterator.getPosition();

        if (iterator.hasNext() == false) {
            throw new IllegalStateException("Not enough records in loader, expected upto " + length);
        }

        iterator.skip();
    }

    this.positions = new SoftReference<long[]>(positions);

    //      logger.info("fetched: [" + positions[0] + "-" + (positions[length - 1])
    //          + "]");

    return positions;
}

From source file:org.jboss.windup.metadata.type.XmlMetadata.java

public void setParsedDocument(Document parsedDocument) {
    this.parsedDocumentRef = new SoftReference<Document>(parsedDocument);
}

From source file:com.abelsky.idea.geekandpoke.entries.Entry.java

@Nullable
public BufferedImage getImage() {
    if (imageRef == null) {
        log.assertTrue(isDeleted());/*from  w ww  .  j  ava 2  s  .  c o m*/
        return null;
    }

    log.assertTrue(!isDeleted());

    @Nullable
    BufferedImage image = imageRef.get();
    if (image == null) {
        imageRef = new SoftReference<BufferedImage>(image = fetchCachedImage());
    }
    return image;
}

From source file:com.googlecode.fightinglayoutbugs.ScreenshotCache.java

public @Nonnull Screenshot getScreenshot(Condition condition) {
    SoftReference<Screenshot> softReference = _memoryCache.get(condition);
    Screenshot screenshot;//www. ja v  a  2 s.  c o  m
    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:com.guang.eunormia.common.cache.DefaultLocalCache.java

@Override
public V put(K key, V value) {
    SoftReference<V> result = getCache(key).put(key, new SoftReference<V>(value));
    expiryCache.put(key, -1L);//from w  w  w  .ja  v  a 2 s .c o m

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

From source file:org.videolan.vlc.util.HttpImageLoader.java

@Nullable
public static Bitmap downloadBitmap(String imageUrl) {
    if (iconsMap.containsKey(imageUrl)) {
        Bitmap bd = iconsMap.get(imageUrl).get();
        if (bd != null) {
            return bd;
        } else/*from w  w w  .ja  va 2s. c o  m*/
            iconsMap.remove(imageUrl);
    }
    HttpURLConnection urlConnection = null;
    Bitmap icon = null;
    try {
        URL url = new URL(imageUrl);
        if (url.getPort() <= 0)
            return null;
        urlConnection = (HttpURLConnection) url.openConnection();
        InputStream in = new BufferedInputStream(urlConnection.getInputStream());
        icon = BitmapFactory.decodeStream(in);
        iconsMap.put(imageUrl, new SoftReference<>(icon));
    } catch (MalformedURLException e) {
        e.printStackTrace();
    } catch (IOException e) {
        e.printStackTrace();
    } finally {
        if (urlConnection != null)
            urlConnection.disconnect();
    }
    return icon;
}