There’s a good-looking article over at mysql.com outlining various ways of managing hierarchical data. I think it provides a full solution to your question, and shows various less simple, but faster approaches (e.g. Nested Sets).
At this point in your code the view controller’s view has only been created but not added to any view hierarchy. If you want to present from that view controller as soon as possible you should do it in viewDidAppear to be safest.
So, you want your git repo to look like this: <projectdir> /.git /webroot /assets To do this, you must move the existing files in your repo into a new webroot subdirectory. cd <git repo root> mkdir webroot git mv <all your files> webroot git commit –all -m “moved all existing files to new ‘webroot’ directory” … Read more
It is possible in Access to create a query to find the root of your given job. Don’t forget the power of VBA functions. You can create a recursive function in a VBA module and use its result as an output field in your query. Example: Public Function JobRoot(Id As Long, ParentId As Long) As … Read more
Try this. It’s a hackerish solution but it will do. The field classes in any classloader (under Sun’s impl since 1.0) holds hard reference to the classes defined by the loader so they won’t be GC’d. You can take a benefit from via reflection. Field f = ClassLoader.class.getDeclaredField(“classes”); f.setAccessible(true); ClassLoader classLoader = Thread.currentThread().getContextClassLoader(); Vector<Class> classes … Read more
According to the Hibernate Reference Documentation it should be possible to mix different inheritance mapping strategies when using Hibernate’s XML-Metadata (…) Actually, it’s not really supported, they are “cheating” using a secondary table to switch from the single table strategy in the example of the documentation. Quoting Java Persistence with Hibernate: You can map whole … Read more
Package Explorer / View Menu / Package Presentation… / Hierarchical The “View Menu” can be opened with Ctrl + F10, or the small arrow-down icon in the top-right corner of the Package Explorer.
Yes, this is possible. This is a special case of the standard bidirectional @ManyToOne/@OneToMany relationship. It is special because the entity on each end of the relationship is the same. The general case is detailed in Section 2.10.2 of the JPA 2.0 spec. Here’s a worked example. First, the entity class A: @Entity public class … Read more
Put the bean in the view scope and get rid of any business logic in getter methods. The bean must be placed in the view scope so that all previous selections and new available items are remembered for subsequent postbacks, otherwise things will fail when JSF needs to validate the selected item against the list … Read more
I like the Modified Preorder Tree Traversal Algorithm. This technique makes it very easy to query the tree. But here is a list of links about the topic which I copied from the Zend Framework (PHP) contributors webpage (posted there by Posted by Laurent Melmoux at Jun 05, 2007 15:52). Many of the links are … Read more