I don't know what code you want to see, but here's the bean code:
| @Stateful
| @Scope(ScopeType.SESSION)
| @Name("categorybean")
| public class CategoryBean implements CategoryLocal {
|
| private static final int PAGE_SIZE = 30;
|
| @In
| private EntityManager db;
|
| @RequestParameter
| private String id;
|
| private Category cat;
| private Query entryQuery;
| private int page = 0;
|
| public Category getCategory() {
| if (cat == null)
| cat = db.find(Category.class, Short.parseShort(id));
| return cat;
| }
|
| @SuppressWarnings("unchecked")
| public List<Entry> getEntries() {
| if (entryQuery == null) {
| Session session = (Session) db.getDelegate();
| entryQuery =
session.createFilter(getCategory().getEntries(), "");
| }
|
| entryQuery.setFirstResult(page * PAGE_SIZE).setMaxResults(30);
| return entryQuery.list();
| }
|
| public boolean isPreviousPageAvailable() {
| return page > 0;
| }
|
| public boolean isNextPageAvailable() {
| return page * PAGE_SIZE < getCategory().getNumEntries() - 1;
| }
|
| public void jumpPage() {
| // Dummy method for jumping pages
| }
|
| public void previousPage() {
| page--;
| }
|
| public void nextPage() {
| page++;
| }
|
| public int getPage() {
| return page;
| }
|
| public void setPage(int page) {
| this.page = page;
| }
|
| public int[] getPageNumbers() {
| int[] pageNumbers = new int[getCategory().getNumEntries()];
| for (int i = 0; i < getCategory().getNumEntries(); i++)
| pageNumbers = i + 1;
| return pageNumbers;
| }
|
| @Remove @Destroy
| public void destroy() {}
|
| }
|
and the local interface:
| @Local
| public interface CategoryLocal {
|
| Category getCategory();
|
| List<Entry> getEntries();
|
| int[] getPageNumbers();
|
| void jumpPage();
|
| int getPage();
|
| void setPage(int page);
|
| boolean isPreviousPageAvailable();
|
| boolean isNextPageAvailable();
|
| void previousPage();
|
| void nextPage();
|
| void destroy();
|
| }
|
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