Examples of java.lang.ref.Reference

java.lang.ref.Reference
Abstract base class for reference objects. This class defines the operations common to all reference objects. Because reference objects are implemented in close cooperation with the garbage collector, this class may not be subclassed directly. @version 1.43, 04/10/06 @author Mark Reinhold @since 1.2

    public SerializedBeanFactoryReference(String id) {
      this.id = id;
    }


    private Object readResolve() {
      Reference ref = serializableFactories.get(this.id);
      if (ref == null) {
        throw new IllegalStateException(
            "Cannot deserialize BeanFactory with id " + this.id + ": no factory registered for this id");
      }
      Object result = ref.get();
      if (result == null) {
        throw new IllegalStateException(
            "Cannot deserialize BeanFactory with id " + this.id + ": factory has been garbage-collected");
      }
      return result;

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   */
  static CachedIntrospectionResults forClass(Class beanClass) throws BeansException {
    CachedIntrospectionResults results;
    Object value = classCache.get(beanClass);
    if (value instanceof Reference) {
      Reference ref = (Reference) value;
      results = (CachedIntrospectionResults) ref.get();
    }
    else {
      results = (CachedIntrospectionResults) value;
    }
    if (results == null) {

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    public SerializedBeanFactoryReference(String id) {
      this.id = id;
    }


    private Object readResolve() {
      Reference ref = serializableFactories.get(this.id);
      if (ref == null) {
        throw new IllegalStateException(
            "Cannot deserialize BeanFactory with id " + this.id + ": no factory registered for this id");
      }
      Object result = ref.get();
      if (result == null) {
        throw new IllegalStateException(
            "Cannot deserialize BeanFactory with id " + this.id + ": factory has been garbage-collected");
      }
      return result;

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         }
      }


      private void clearCollected()
      {
         Reference ref;
         while ((ref = queue.poll()) != null)
         {
            observer.remove(ref);
         }

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        }
        if (iFixedOffsetCache == null) {
            iFixedOffsetCache = new HashMap();
        }
        DateTimeZone zone;
        Reference ref = (Reference) iFixedOffsetCache.get(id);
        if (ref != null) {
            zone = (DateTimeZone) ref.get();
            if (zone != null) {
                return zone;
            }
        }
        zone = new FixedDateTimeZone(id, null, offset, offset);

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       */
      IPath resolved = null;
      Map mapForBaseResource = null;
      mapForBaseResource = (Map) fResolvedMap.get(basePath);
      if (mapForBaseResource != null) {
        Reference resolvedReference = (Reference) mapForBaseResource.get(reference);
        if (resolvedReference != null)
          resolved = (IPath) resolvedReference.get();
      }
      else {
        mapForBaseResource = new HashMap();
        fResolvedMap.put(basePath, mapForBaseResource);
      }

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    IFile webxmlFile = ResourcesPlugin.getWorkspace().getRoot().getFile(webxmlPath);
    if (!webxmlFile.isAccessible())
      return null;


    Reference descriptorHolder = (Reference) fDeploymentDescriptors.get(webxmlPath);
    DeploymentDescriptor descriptor = null;


    if (descriptorHolder == null || ((descriptor = (DeploymentDescriptor) descriptorHolder.get()) == null) || (descriptor.modificationStamp == IResource.NULL_STAMP) || (descriptor.modificationStamp != webxmlFile.getModificationStamp())) {
      descriptor = fetchDescriptor(webxmlPath, new NullProgressMonitor());
    }
    return descriptor;
  }

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    if (grammerURI == null)
      return null;
    
    CMDocument cmDocument = null;
    if (CACHE_FIXED_DOCUMENTS) {
      Reference ref = (Reference) fFixedCMDocuments.get(publicId);
      if (ref != null) {
        cmDocument = (CMDocument) ref.get();
        if (cmDocument != null) {
          return cmDocument;
        }
      }
    }

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     * care must be taken if, for instance, you want stale
     * mappings to be removed on a periodic basis by some
     * background thread.
     */
    protected void purge() {
        Reference ref = queue.poll();
        while (ref != null) {
            purge(ref);
            ref = queue.poll();
        }
    }

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   */
  static CachedIntrospectionResults forClass(Class beanClass) throws BeansException {
    CachedIntrospectionResults results;
    Object value = classCache.get(beanClass);
    if (value instanceof Reference) {
      Reference ref = (Reference) value;
      results = (CachedIntrospectionResults) ref.get();
    }
    else {
      results = (CachedIntrospectionResults) value;
    }
    if (results == null) {

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