Red Hat Web Application Framework 6.1 Manuale Utente Scaricare il pdf (Pagina 143)

Chapter 11. Services Tutorials 129

Figure 11-5. Category hierarchy before and after deleting a category

You can delete a category in the following ways:

• Deleting Leaf Category — If the category is a leaf, call Category.delete().

• Remapping Child Categories — If you want to remove the current category and make all

categories that were pointing to it point to its default parent (as in the example), call

Category.deleteCategoryAndRemap().

• Orphaning Children — If you want to delete the category without remapping any of the child

categories, call Category.deleteCategoryAndOrphan(). Note that there is no way to navigate

from the root to orphaned categories. Effectively, the orphaned categories are no longer part of the

categorization schemes, unless they have non-default parents.

• Deleting Category Subtree — If you want to delete the entire subtree, including the passed-in

category and all categories below it whose default ancestry can be traced to the root, call Cate-

gory.deleteCategorySubtree().

11.2.3. Adding more Parent Categories

Category a = new Category(new OID(123));

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Red Hat Web Application Framework 6.1 Manuale Utente Pagina 143