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.openanzo.rdf.MemVariable.java

/**
 * Static factory method that uses an WeakHashMap cache to reuse {@link MemVariable} objects for variables with the same name.
 * /*  w  w w . ja  v  a 2  s .c om*/
 * @param variableName
 *            name of variable
 * @return {@link MemVariable} for given name
 */
static public MemVariable createVariable(String variableName) {
    if (variableName.startsWith("?")) {
        throw new AnzoRuntimeException(ExceptionConstants.CLIENT.VARIABLE_START_QUESTION, variableName);
    }
    if (!StringUtils.containsNone(variableName, " \t\n\r\f")) {
        throw new AnzoRuntimeException(ExceptionConstants.CLIENT.VARIABLE_NO_SPACES, variableName);
    }
    SoftReference<MemVariable> ref = cache.get(variableName);
    MemVariable var = (ref != null) ? ref.get() : null;
    if (var == null) {
        var = new MemVariable(variableName);
        cache.put(variableName, new SoftReference<MemVariable>(var));
    }
    return var;
}

From source file:net.sf.nmedit.jtheme.JTCursor.java

public static Cursor getJackCursor(int id) {
    if (!(0 <= id && id < names.length))
        return null;

    SoftReference<?> ref = cursors[id];

    Cursor cursor = null;//  ww  w .j a  v  a  2s  . c o  m
    if (ref == null) {
        cursor = createCursor(id);
        cursors[id] = new SoftReference<Cursor>(cursor);
        return cursor;
    }
    cursor = (Cursor) ref.get();
    if (cursor == null) {
        cursor = createCursor(id);
        cursors[id] = new SoftReference<Cursor>(cursor);
    }

    return cursor;
}

From source file:net.cs76.projects.student10792819.DrawableManager.java

/**
 * Fetch drawable. This fetches a drawable from the url and returns it. Returns null on errors.
 *
 * @param urlString the url string//from  w w  w  .java  2s  .c  om
 * @return the drawable
 */
public static Drawable fetchDrawable(String urlString) {
    if (drawableMap.containsKey(urlString)) {
        Drawable o = drawableMap.get(urlString).get();

        if (o != null)
            return o;
    }

    try {
        InputStream is = fetch(urlString);
        Drawable drawable = Drawable.createFromStream(is, "src");

        if (drawable != null) {
            drawableMap.put(urlString, new SoftReference<Drawable>(drawable));
        } else {
            Log.w("DrawableManager", "could not get thumbnail");
        }

        return drawable;
    } catch (MalformedURLException e) {
        Log.e("DrawableManager", "fetchDrawable failed", e);
        return null;
    } catch (IOException e) {
        Log.e("DrawableManager", "fetchDrawable failed", e);
        return null;
    }
}

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

@Override
public void safeWorkflowInstance(WorkflowInstance wfi, boolean initialInsert) throws Exception {
    wfCache.put(wfi.id, new SoftReference<WorkflowInstance>(wfi));
    delegate.safeWorkflowInstance(wfi, initialInsert);
}

From source file:com.eviware.soapui.impl.wsdl.testcase.TestCaseLogModel.java

public synchronized void addTestStepResult(TestStepResult result) {
    stepCount++;/*w  w w  .  j a  v  a 2  s . c o m*/

    int size = items.size();
    items.add("Step " + stepCount + " [" + result.getTestStep().getName() + "] " + result.getStatus()
            + ": took " + result.getTimeTaken() + " ms");
    SoftReference<TestStepResult> ref = new SoftReference<TestStepResult>(result);
    results.add(ref);
    for (String msg : result.getMessages()) {
        items.add(" -> " + msg);
        results.add(ref);
    }

    fireIntervalAdded(this, size, items.size() - 1);
    enforceMaxSize();
}

From source file:org.jactr.core.utils.collections.CachedMap.java

synchronized protected Collection<V> getCachedValues() {
    Collection<V> rtn = null;
    if (_cachedValuesReference == null || (rtn = _cachedValuesReference.get()) == null) {
        rtn = Collections.unmodifiableCollection(new ArrayList<V>(_backingMap.values()));
        _cachedValuesReference = new SoftReference<Collection<V>>(rtn);
    }//from   w w w  .j a va2  s. c o m
    return rtn;
}

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

/**
 * @param length/*  w w w.j  av  a  2s. com*/
 */
public SoftTable(final List<Long> list, PartialLoader loader) {
    this.loader = loader;
    this.length = list.size();
    this.first = list.get(0);
    this.last = list.get(list.size() - 1);

    final long[] positions = new long[length];
    for (int i = 0; i < list.size(); i++) {
        positions[i] = list.get(i);
    }

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

From source file:org.grouplens.lenskit.core.LenskitInfo.java

/**
 * Get the set of revisions LensKit is built from.
 * @return The set of revisions included in this build of LensKit.
 *///from  w  w w.  j ava2s .c om
public static synchronized Set<String> getRevisions() {
    Set<String> revisions = revisionSet == null ? null : revisionSet.get();
    if (revisions == null) {
        revisions = loadRevisionSet();
        revisionSet = new SoftReference<Set<String>>(revisions);
    }
    return revisions;
}

From source file:org.jboss.windup.resource.type.XmlMeta.java

protected Document hydrateDocument() {
    if (parsedDocumentRef == null) {
        FileInputStream fis = null;
        try {/*  w w  w  . ja  v a  2  s .  c  o  m*/
            fis = FileUtils.openInputStream(filePointer);
            Document parsedDocument = PositionalXmlReader.readXML(fis);

            LOG.debug("Hydrating XML Document: " + filePointer.getAbsolutePath());
            parsedDocumentRef = new SoftReference<Document>(parsedDocument);
        } catch (Exception e) {
            LOG.error("Bad XML? " + filePointer.getAbsolutePath());
            LOG.info("Skipping file. Continuing Windup Processing...");

            Summary sr = new Summary();
            sr.setDescription("Bad XML? Unable to parse.");
            sr.setLevel(NotificationLevel.CRITICAL);
            sr.setEffort(new UnknownEffort());
            this.getDecorations().add(sr);
            this.parsedDocumentRef = null;

            return null;
        } finally {
            IOUtils.closeQuietly(fis);
        }
    }
    return parsedDocumentRef.get();
}

From source file:org.seasar.mayaa.impl.engine.SpecificationCache.java

protected void postNewGabage() {
    Object gabage = new Object();
    _gabage = new SoftReference(gabage);
    _gcChecker.add(gabage);
}