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:cn.moon.superwechat.runtimepermissions.PermissionsManager.java

/**
 * This method adds the {@link PermissionsResultAction} to the current list
 * of pending actions that will be completed when the permissions are
 * received. The list of permissions passed to this method are registered
 * in the PermissionsResultAction object so that it will be notified of changes
 * made to these permissions./*from ww  w .j a va2s  . c  o m*/
 *
 * @param permissions the required permissions for the action to be executed.
 * @param action      the action to add to the current list of pending actions.
 */
private synchronized void addPendingAction(@NonNull String[] permissions,
        @Nullable PermissionsResultAction action) {
    if (action == null) {
        return;
    }
    action.registerPermissions(permissions);
    mPendingActions.add(new WeakReference<PermissionsResultAction>(action));
}

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From source file:com.adeptj.runtime.server.Server.java

/**
 * Bootstrap Undertow Server and OSGi Framework.
 *//*w ww.ja  va  2 s . c  o m*/
@Override
public void start() {
    LOGGER.debug("AdeptJ Runtime jvm args: {}", this.runtimeArgs);
    this.cfgReference = new WeakReference<>(Configs.of().undertow());
    Config undertowConf = Objects.requireNonNull(this.cfgReference.get());
    Config httpConf = undertowConf.getConfig(Constants.KEY_HTTP);
    int httpPort = this.handlePortAvailability(httpConf);
    LOGGER.info("Starting AdeptJ Runtime @port: [{}]", httpPort);
    this.printBanner();
    this.deploymentManager = Servlets.newContainer().addDeployment(this.deploymentInfo());
    this.deploymentManager.deploy();
    try {
        this.rootHandler = this.rootHandler(this.deploymentManager.start());
        this.undertow = this
                .enableHttp2(ServerOptions.build(this.workerOptions(Undertow.builder()), undertowConf))
                .addHttpListener(httpPort, httpConf.getString(Constants.KEY_HOST)).setHandler(this.rootHandler)
                .build();
        this.undertow.start();
    } catch (Exception ex) { // NOSONAR
        throw new InitializationException(ex.getMessage(), ex);
    }
    this.createServerConfFile();
}

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From source file:WeakReferenceList.java

/**
 * Creates a new reference for the given object.
 *
 * @param o the object.//from   w  w  w.  j av  a  2  s .co  m
 * @return a WeakReference for the object o without any ReferenceQueue attached.
 */
private Reference createReference(final Object o) {
    return new WeakReference(o);
}

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From source file:cn.com.loopj.android.http.AsyncHttpResponseHandler.java

@Override
public void setTag(Object TAG) {
    this.TAG = new WeakReference<Object>(TAG);
}

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From source file:architecture.ee.component.core.lifecycle.BootstrapImpl.java

@SuppressWarnings("unchecked")
public <T> T getBootstrapComponent(Class<T> requiredType) throws ComponentNotFoundException {
    if (requiredType == null) {
        throw new ComponentNotFoundException();
    }//from www.j  a  va  2 s .co m

    if (requiredType == Repository.class) {
        lock.lock();
        try {
            if (repository.getState() != State.INITIALIZED) {
                repository.initialize();
            }
        } catch (Exception e) {

        } finally {
            lock.unlock();
        }
        return (T) repository;
    }
    if (references.get(requiredType) == null) {
        try {
            if (getBootstrapApplicationContext() == null) {
                throw new IllegalStateException(L10NUtils.getMessage("003051"));
            }
            if (ContextLoader.getCurrentWebApplicationContext() != null) {
                log.debug("searching in current web application context");
                references.put(requiredType, new WeakReference<T>(
                        ContextLoader.getCurrentWebApplicationContext().getBean(requiredType)));
            } else {
                log.debug("searching in bootstrap application context");
                references.put(requiredType,
                        new WeakReference<T>(getBootstrapApplicationContext().getBean(requiredType)));
            }
        } catch (BeansException e) {
            throw new ComponentNotFoundException(L10NUtils.format("003052", requiredType.getName()), e);
        }
    }
    return (T) references.get(requiredType).get();
}

---

From source file:ch.entwine.weblounge.common.impl.content.image.LazyImageResourceImpl.java

/**
 * Loads the image header only.// w w  w.  j  a  v a 2 s.  c o m
 */
protected void loadImageHeader() {
    try {

        // Get a hold of the image reader
        ImageResourceReader reader = (readerRef != null) ? readerRef.get() : null;
        if (reader == null) {
            reader = new ImageResourceReader();
            readerRef = new WeakReference<ImageResourceReader>(reader);
        }

        // If no separate header was given, then we need to load the whole thing
        // instead.
        if (headerXml == null) {
            loadImage();
            return;
        }

        // Load the image header
        image = reader.readHeader(IOUtils.toInputStream(headerXml, "utf-8"), uri.getSite());
        isHeaderLoaded = true;
        if (isHeaderLoaded && isBodyLoaded)
            cleanupAfterLoading();
        else
            headerXml = null;

    } catch (Throwable e) {
        logger.error("Failed to lazy-load header of {}", uri);
        throw new IllegalStateException(e);
    }
}

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From source file:at.the.gogo.panoramio.panoviewer.ImageManager.java

/**
 * Adds an observer to be notified when the set of items held by this
 * ImageManager changes./*from   w  w  w  . j  a  va2  s.  c  o m*/
 */
public void addObserver(final DataSetObserver observer) {
    final WeakReference<DataSetObserver> obs = new WeakReference<DataSetObserver>(observer);
    mObservers.add(obs);
}

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From source file:org.Cherry.Modules.Web.Engine.RequestInterceptor.java

protected User getUser(final HttpRequest request) {
    User result = null;//w  ww . ja  v a2s.c o m

    if (request instanceof HttpEntityEnclosingRequest) {
        final HttpEntity entity = ((HttpEntityEnclosingRequest) request).getEntity();

        final long contentLength = entity.getContentLength();

        if (0 < contentLength) {
            WeakReference<InputStream> is;

            try {
                is = new WeakReference<InputStream>(entity.getContent());
            } catch (IllegalStateException | IOException err) {
                throw new IllegalStateException(err);
            }

            try {
                result = getObjectMapperService().readValue(is.get(), User.class);
            } catch (final IOException err) {
                throw new IllegalStateException(err);
            }
        } else
            warn("{}", "Undefined content/length 0! Did the sender missed it?!");
    } else
        throw new IllegalArgumentException("Expected request of type [" + HttpEntityEnclosingRequest.class
                + "] but found [" + request.getClass() + "]");

    return result;
}

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From source file:ch.entwine.weblounge.common.impl.content.file.LazyFileResourceImpl.java

/**
 * Loads the file header only.//  w  w w.  j av a 2s  . com
 */
protected void loadFileHeader() {
    try {

        // Get a hold of the file reader
        FileResourceReader reader = (readerRef != null) ? readerRef.get() : null;
        if (reader == null) {
            reader = new FileResourceReader();
            readerRef = new WeakReference<FileResourceReader>(reader);
        }

        // If no separate header was given, then we need to load the whole thing
        // instead.
        if (headerXml == null) {
            loadPage();
            return;
        }

        // Load the file header
        file = reader.readHeader(IOUtils.toInputStream(headerXml, "utf-8"), uri.getSite());
        isHeaderLoaded = true;
        if (isHeaderLoaded && isBodyLoaded)
            cleanupAfterLoading();
        else
            headerXml = null;

    } catch (Throwable e) {
        logger.error("Failed to lazy-load header of {}", uri);
        throw new IllegalStateException(e);
    }
}

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From source file:android.content.res.VectorResources.java

@Override
Drawable loadDrawable(TypedValue value, int id) throws NotFoundException {
    boolean isColorDrawable = false;
    if (value.type >= TypedValue.TYPE_FIRST_COLOR_INT && value.type <= TypedValue.TYPE_LAST_COLOR_INT) {
        isColorDrawable = true;/*from ww w .j a  v  a  2 s  . c o m*/
    }
    final long key = isColorDrawable ? value.data : (((long) value.assetCookie) << 32) | value.data;

    Drawable dr = getCachedDrawable(isColorDrawable ? mColorDrawableCache : mDrawableCache, key);

    if (dr != null) {
        return dr;
    }

    if (isColorDrawable) {
        dr = new ColorDrawable(value.data);
    }

    if (dr == null) {
        if (value.string == null) {
            throw new NotFoundException("Resource is not a Drawable (color or path): " + value);
        }

        String file = value.string.toString();

        if (file.endsWith(".xml")) {
            // Trace.traceBegin(Trace.TRACE_TAG_RESOURCES, file);
            try {
                XmlResourceParser rp = getXml(id);
                // XmlResourceParser rp = loadXmlResourceParser(
                //         file, id, value.assetCookie, "drawable");
                dr = createDrawableFromXml(rp);
                rp.close();
            } catch (Exception e) {
                // Trace.traceEnd(Trace.TRACE_TAG_RESOURCES);
                NotFoundException rnf = new NotFoundException(
                        "File " + file + " from drawable resource ID #0x" + Integer.toHexString(id));
                rnf.initCause(e);
                throw rnf;
            }
            // Trace.traceEnd(Trace.TRACE_TAG_RESOURCES);

        } else {
            // Trace.traceBegin(Trace.TRACE_TAG_RESOURCES, file);
            try {
                InputStream is = openRawResource(id, value);
                //InputStream is = mAssets.openNonAsset(
                //        value.assetCookie, file, AssetManager.ACCESS_STREAMING);
                //                System.out.println("Opened file " + file + ": " + is);
                dr = Drawable.createFromResourceStream(this, value, is, file, null);
                is.close();
                //                System.out.println("Created stream: " + dr);
            } catch (Exception e) {
                // Trace.traceEnd(Trace.TRACE_TAG_RESOURCES);
                NotFoundException rnf = new NotFoundException(
                        "File " + file + " from drawable resource ID #0x" + Integer.toHexString(id));
                rnf.initCause(e);
                throw rnf;
            }
            // Trace.traceEnd(Trace.TRACE_TAG_RESOURCES);
        }
    }
    Drawable.ConstantState cs;
    if (dr != null) {
        dr.setChangingConfigurations(value.changingConfigurations);
        cs = dr.getConstantState();
        if (cs != null) {
            synchronized (mAccessLock) {
                //Log.i(TAG, "Saving cached drawable @ #" +
                //        Integer.toHexString(key.intValue())
                //        + " in " + this + ": " + cs);
                if (isColorDrawable) {
                    mColorDrawableCache.put(key, new WeakReference<Drawable.ConstantState>(cs));
                } else {
                    mDrawableCache.put(key, new WeakReference<Drawable.ConstantState>(cs));
                }
            }
        }
    }

    return dr;
}

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