Examples of VirtualLibraryEngine

org.apache.tapestry.vlib.VirtualLibraryEngine
The engine for the Virtual Library. This exists to implement the external service, which allows the {@link org.apache.tapestry.vlib.pages.ViewBook}and {@link org.apache.tapestry.vlib.pages.ViewPerson}pages to be bookmarked, and to provide a way for shutting down the application when the user logs out. @version $Id: VirtualLibraryEngine.java,v 1.12 2004/04/30 15:17:22 hlship Exp $ @author Howard Lewis Ship

Examples of org.apache.tapestry.vlib.VirtualLibraryEngine

        }
    }


    private IPropertySelectionModel buildBooksModel()
    {
        VirtualLibraryEngine vengine = (VirtualLibraryEngine) getEngine();
        Visit visit = (Visit) vengine.getVisit();
        Integer userPK = visit.getUserId();
        Book[] books = null;


        int i = 0;
        while (true)
        {
            books = null;


            try
            {
                IBookQuery query = vengine.createNewQuery();


                int count = query.ownerQuery(userPK, null);


                if (count > 0)
                    books = query.get(0, count);


                break;
            }
            catch (RemoteException ex)
            {
                vengine.rmiFailure(readBooksFailure(), ex, i++);
            }
        }


        EntitySelectionModel result = new EntitySelectionModel();

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Examples of org.apache.tapestry.vlib.VirtualLibraryEngine

        setBookId(bookId);
    }


    private void readBook()
    {
        VirtualLibraryEngine vengine = (VirtualLibraryEngine) getEngine();
        Integer bookId = getBookId();


        int i = 0;
        while (true)
        {
            IOperations bean = vengine.getOperations();


            try
            {
                setBook(bean.getBook(bookId));


                return;
            }
            catch (FinderException ex)
            {
                vengine.presentError("Book not found in database.", getRequestCycle());
                return;
            }
            catch (RemoteException ex)
            {
                vengine.rmiFailure("Remote exception obtaining information for book #" + bookId
                        + ".", ex, i++);
            }
        }


    }

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Examples of org.apache.tapestry.vlib.VirtualLibraryEngine

            getBrowser().setResultCount(count);
    }


    private int runQuery()
    {
        VirtualLibraryEngine vengine = (VirtualLibraryEngine) getEngine();
        Integer personId = getPersonId();


        SortOrdering ordering = new SortOrdering(getSortColumn(), isDescending());


        int i = 0;
        while (true)
        {
            IBookQuery query = getQuery();


            if (query == null)
            {
                query = vengine.createNewQuery();


                setQuery(query);
            }


            try
            {
                return query.ownerQuery(personId, ordering);
            }
            catch (RemoteException ex)
            {
                vengine.rmiFailure("Remote exception for owner query.", ex, i++);


                setQuery(null);
            }
        }

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Examples of org.apache.tapestry.vlib.VirtualLibraryEngine

    {
        Person person = getPerson();


        if (person == null)
        {
            VirtualLibraryEngine vengine = (VirtualLibraryEngine) getEngine();


            person = vengine.readPerson(getPersonId());


            setPerson(person);
        }
    }

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Examples of org.apache.tapestry.vlib.VirtualLibraryEngine

        _userConverter = null;
    }


    private void readUsers()
    {
        VirtualLibraryEngine vengine = (VirtualLibraryEngine) getEngine();
        Visit visit = getVisitState();


        Integer userId = visit.getUserId();
        Person[] users = null;


        int i = 0;
        while (true)
        {
            try
            {
                IOperations operations = vengine.getOperations();


                users = operations.getPersons();


                break;
            }
            catch (RemoteException ex)
            {
                vengine.rmiFailure(readFailure(), ex, i++);
            }
        }


        UserConverter converter = getUserConverter();

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Examples of org.apache.tapestry.vlib.VirtualLibraryEngine


    public void updateUsers(IRequestCycle cycle)
    {
        Visit visit = getVisitState();


        VirtualLibraryEngine vengine = (VirtualLibraryEngine) cycle.getEngine();


        UserConverter converter = getUserConverter();


        Person[] updates = (Person[]) converter.getValues().toArray(new Person[0]);
        Integer[] deletedIds = extractIds(converter.getDeletedValues());
        Integer[] resetPasswordIds = extractIds(converter.getResetPasswordValues());


        String password = getPassword();
        setPassword(null);


        if (HiveMind.isBlank(password) && resetPasswordIds.length > 0)
        {
            getValidationDelegate().record(getPasswordField(), needPassword());
            return;
        }


        Integer adminId = visit.getUserId();


        int i = 0;
        while (true)
        {
            try
            {
                IOperations operations = vengine.getOperations();


                operations.updatePersons(updates, resetPasswordIds, password, deletedIds, adminId);
                break;
            }
            catch (RemoteException ex)
            {
                vengine.rmiFailure(updateFailure(), ex, i++);
            }
            catch (RemoveException ex)
            {
                throw new ApplicationRuntimeException(ex);
            }

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Examples of org.apache.tapestry.vlib.VirtualLibraryEngine

            browser.initializeForResultCount(count);
    }


    private int executeQuery()
    {
        VirtualLibraryEngine vengine = (VirtualLibraryEngine) getEngine();


        MasterQueryParameters parameters = getQueryParameters();


        SortOrdering ordering = new SortOrdering(getSortColumn(), isDescending());


        int i = 0;
        while (true)
        {
            try
            {
                IBookQuery query = getBookQuery();


                if (query == null)
                {
                    query = vengine.createNewQuery();
                    setBookQuery(query);
                }


                return query.masterQuery(parameters, ordering);
            }
            catch (RemoteException ex)
            {
                vengine.rmiFailure("Remote exception processing query.", ex, i++);


                setBookQuery(null);
            }
        }
    }

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Examples of org.apache.tapestry.vlib.VirtualLibraryEngine

        List selectedBooks = getSelectedBooks();


        Integer[] keys = (Integer[]) selectedBooks.toArray(new Integer[0]);
        Person toUser = getToUser();


        VirtualLibraryEngine vengine = (VirtualLibraryEngine) getEngine();


        int i = 0;
        while (true)
        {
            try
            {
                IOperations operations = vengine.getOperations();


                operations.transferBooks(toUser.getId(), keys);


                break;
            }
            catch (FinderException ex)
            {
                throw new ApplicationRuntimeException(ex);
            }
            catch (RemoteException ex)
            {
                vengine.rmiFailure("Unable to transfer ownership of books.", ex, i++);
            }
        }


        Person fromUser = getFromUser();

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Examples of org.apache.tapestry.vlib.VirtualLibraryEngine

        return selectPage;
    }


    private IPropertySelectionModel buildUserBookModel(Person user)
    {
        VirtualLibraryEngine vengine = (VirtualLibraryEngine) getEngine();
        Book[] books = null;


        int i = 0;
        while (true)
        {
            books = null;


            try
            {
                IBookQuery query = vengine.createNewQuery();


                int count = query.ownerQuery(user.getId(), null);


                if (count > 0)
                    books = query.get(0, count);


                break;
            }
            catch (RemoteException ex)
            {
                vengine.rmiFailure("Unable to retrieve books owned by " + user.getNaturalName()
                        + ".", ex, i++);
            }
        }


        EntitySelectionModel model = new EntitySelectionModel();

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Examples of org.apache.tapestry.vlib.VirtualLibraryEngine

        return model;
    }


    private Person readPerson(Integer personId)
    {
        VirtualLibraryEngine vengine = (VirtualLibraryEngine) getEngine();


        return vengine.readPerson(personId);
    }

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