Examples of com.sun.sgs.app.DataManager.createReference()

com.sun.sgs.app.DataManager.createReference()
Creates a managed reference to an object, storing the object in the data manager if it is transient. Applications should use managed references when a managed object refers to another managed object, either directly or indirectly through non-managed objects. @param < T> the type of the object @param object the object @return the managed reference @throws IllegalArgumentException if object does notimplement both {@link ManagedObject} and {@link Serializable} @throws ObjectNotFoundException if the object has been removed @throws TransactionException if the operation failed because of aproblem with the current transaction

        DataManager dm = AppContext.getDataManager();


        // short-circuit case if this element is the only element in
        // the deque (i.e. the deque was empty)
        if (headElement.get().get() == null) {
            ManagedReference<Element<E>> ref = dm.createReference(e);
            headElement.get().set(ref);
            tailElement.get().set(ref);
            return;
        }

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            tailElement.get().set(ref);
            return;
        }


        Element<E> oldHead = headElement();
        headElement.get().set(dm.createReference(e));
        e.setPrev(null);
        e.setNext(oldHead);
        oldHead.setPrev(e);
    }

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        DataManager dm = AppContext.getDataManager();


        // short-circuit case if this element is the only element in
        // the deque (i.e. the deque was empty)
        if (tailElement.get().get() == null) {
            ManagedReference<Element<E>> ref = dm.createReference(e);
            headElement.get().set(ref);
            tailElement.get().set(ref);
            return;
        }

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            tailElement.get().set(ref);
            return;
        }


        Element<E> oldTail = tailElement();
        tailElement.get().set(dm.createReference(e));
        e.setPrev(oldTail);
        e.setNext(null);
        oldTail.setNext(e);
    }

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        if (o == null || !(o instanceof ScalableDeque)) {
            return false;
        }
        ScalableDeque<E> d = uncheckedCast(o);
        DataManager dm = AppContext.getDataManager();
        return dm.createReference(this).equals(dm.createReference(d));
    }


    /**
     * Returns the next unique identifier for an {@code Element} that
     * is being added to the head of the deque.

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        if (o == null || !(o instanceof ScalableDeque)) {
            return false;
        }
        ScalableDeque<E> d = uncheckedCast(o);
        DataManager dm = AppContext.getDataManager();
        return dm.createReference(this).equals(dm.createReference(d));
    }


    /**
     * Returns the next unique identifier for an {@code Element} that
     * is being added to the head of the deque.

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        // next element references will only be null if an element is
        // at an end of the list.
        DataManager dm = AppContext.getDataManager();
        if (e.prevElement == null) {
            headElement.get().set((next == null)
                                  ? null : dm.createReference(next));
        }
        if (e.nextElement == null) {
            tailElement.get().set((prev == null)
                                  ? null : dm.createReference(prev));
        }

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            headElement.get().set((next == null)
                                  ? null : dm.createReference(next));
        }
        if (e.nextElement == null) {
            tailElement.get().set((prev == null)
                                  ? null : dm.createReference(prev));
        }
        AppContext.getDataManager().removeObject(e);


        return value;
    }

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         *       in the deque
         */
        void setNext(Element<E> next) {
            DataManager dm = AppContext.getDataManager();
            ManagedReference<Element<E>> ref =
                    (next == null) ? null : dm.createReference(next);


            dm.markForUpdate(this);
            nextElement = ref;
        }

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         *       in the deque
         */
        void setPrev(Element<E> prev) {
            DataManager dm = AppContext.getDataManager();
            ManagedReference<Element<E>> ref =
                    (prev == null) ? null : dm.createReference(prev);


            dm.markForUpdate(this);
            prevElement = ref;
        }

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