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:com.sworddance.taskcontrol.FutureListenerProcessor.java

/**
 * @param returnedFuture//w  w w .  j a  v  a 2 s .c  o  m
 */
public <P extends Future<RV>> void setReturnedFuture(P returnedFuture) {
    if (this.returnedFuture == null) {
        this.returnedFuture = new WeakReference<P>(returnedFuture);
    }
}

From source file:org.taverna.server.master.TavernaServer.java

@Override
@CallCounted//from  ww w .j  av a2 s.c  om
@PerfLogged
public ServerDescription describeService(UriInfo ui) {
    jaxrsUriInfo.set(new WeakReference<>(ui));
    return new ServerDescription(ui, resolve(interactionFeed));
}

From source file:org.openjira.jira.utils.LoadImageAsync.java

public static Bitmap getImageFromFile(String url) {
    try {//from w w w .  ja  v  a  2s  .  co m
        File root = Environment.getExternalStorageDirectory();
        if (root.canWrite()) {
            File dir = new File(root, "openjiracache");
            dir.mkdir();
            File file = new File(dir,
                    url.replace("/", "_").replace(":", "-").replace("?", "_").replace("=", "-"));
            if (file.exists() && file.length() > 0) {
                FileInputStream is = new FileInputStream(file);
                Bitmap bm = BitmapFactory.decodeStream(is);
                // Log.v(LOGTAG, "Loaded file from " +
                // file.getAbsolutePath());
                WeakReference<Bitmap> ref = new WeakReference<Bitmap>(bm);
                cachedBitmaps.put(url, ref);
                return bm;
            }
        }
    } catch (Throwable e) {
        Log.e(LOGTAG, "Could not read file " + e.getMessage());
    }
    return null;
}

From source file:org.taverna.server.master.TavernaServer.java

@Override
@CallCounted//  w w  w  .  j ava2  s  . c  o  m
@PerfLogged
@RolesAllowed(USER)
public RunList listUsersRuns(UriInfo ui) {
    jaxrsUriInfo.set(new WeakReference<>(ui));
    return new RunList(runs(), secure(ui).path("{name}"));
}

From source file:com.flexive.shared.XPathElement.java

private static XPathElement toElementImmutable(String xpath, int elemStart, int elemEnd) {
    final int indexPos = xpath.indexOf('[', elemStart);
    final XPathElement elem;
    if (indexPos == -1 || indexPos > elemEnd) {
        elem = new XPathElement(xpath.substring(elemStart, elemEnd), 1, false, true);
    } else {//from w  w  w.  ja va2s .  c om
        final int index = Integer.parseInt(xpath.substring(indexPos + 1, elemEnd - 1));
        elem = new XPathElement(xpath.substring(elemStart, indexPos), index, true);
    }
    // use canonical instances (xpath elements of nested types contain a lot of duplication)
    final WeakReference<XPathElement> ref = SHARED_ELEMENTS.get(elem);
    XPathElement cachedElem = ref != null ? ref.get() : null;
    if (ref == null || cachedElem == null) {
        SHARED_ELEMENTS.put(elem, new WeakReference<XPathElement>(elem));
        cachedElem = elem;
    }
    return cachedElem;
}

From source file:net.sf.maltcms.chromaui.charts.overlay.Peak2DOverlay.java

/**
 *
 * @return/* w  w w .j  a  v a 2 s  .  c om*/
 */
@Override
public Node createNodeDelegate() {
    Logger.getLogger(getClass().getName()).fine("Creating node delegate");
    Node node = null;
    if (nodeReference == null) {
        node = Charts.overlayNode(this, Children.create(new Peak2DOverlayChildFactory(this), true),
                getLookup());
        nodeReference = new WeakReference<>(node);
    } else {
        node = nodeReference.get();
        if (node == null) {
            node = Charts.overlayNode(this, Children.create(new Peak2DOverlayChildFactory(this), true),
                    getLookup());
            nodeReference = new WeakReference<>(node);
        }
    }
    return node;
}

From source file:com.boha.malengagolf.library.util.PagerTitleStrip22.java

void updateAdapter(PagerAdapter oldAdapter, PagerAdapter newAdapter) {
    if (oldAdapter != null) {
        oldAdapter.unregisterDataSetObserver(mPageListener);
        mWatchingAdapter = null;/*  ww  w.  j ava2 s.c  om*/
    }
    if (newAdapter != null) {
        newAdapter.registerDataSetObserver(mPageListener);
        mWatchingAdapter = new WeakReference<PagerAdapter>(newAdapter);
    }
    if (mPager != null) {
        mLastKnownCurrentPage = -1;
        mLastKnownPositionOffset = -1;
        updateText(mPager.getCurrentItem(), newAdapter);
        requestLayout();
    }
}

From source file:android.support.v7.widget.XpAppCompatCompoundDrawableHelper.java

private Drawable resolveDrawable(@DrawableRes int resId, int index) {
    if (resId != 0) {
        final Drawable d = mDrawableManager != null ? mDrawableManager.getDrawable(mView.getContext(), resId)
                : ContextCompat.getDrawable(mView.getContext(), resId);
        final ColorStateList tint = mDrawableManager != null
                ? mDrawableManager.getTintList(mView.getContext(), resId)
                : null;//from  w w w  .j ava 2 s .c om
        setInternalTint(d, tint, index);
        if (d != null) {
            DrawableUtils.fixDrawable(d);
        }
        mDrawables.put(index, new WeakReference<>(d));
        return d;
    } else {
        setInternalTint(null, null, index);
        mDrawables.put(index, new WeakReference<Drawable>(null));
        return null;
    }
}

From source file:com.alexandreroman.nrelay.NmeaRelayService.java

public void addListener(NmeaRelayListener listener) {
    clearListeners();/* www. j  a v  a2  s.  c  o m*/
    if (listener != null) {
        listenerRefs.add(new WeakReference<NmeaRelayListener>(listener));
    }
}

From source file:org.taverna.server.master.TavernaServer.java

@Override
@CallCounted//  w  ww. j  a va2 s . c o  m
@PerfLogged
@RolesAllowed(USER)
public Response submitWorkflow(Workflow workflow, UriInfo ui) throws NoUpdateException {
    jaxrsUriInfo.set(new WeakReference<>(ui));
    checkCreatePolicy(workflow);
    String name = support.buildWorkflow(workflow);
    return created(secure(ui).path("{uuid}").build(name)).build();
}