hierarchy

I am creating a web-site on wordpress platform where I want to be able to post my own book texts. So what I want is to have a some kind of hierarchy where I would add a post and then add children to it (chapters). I found this: register_post_type( 'post', array( 'labels' => array( 'name_admin_bar' => _x( 'Post', 'add new on admin bar' ), ), 'public' => true, '_builtin' => true, /* internal use only. don't use this when registering your own post type. */ '_edit_link' => 'post.php?post=%d', /* internal use only. don't use this when registering your own post type. */ 'capability_type' => 'post',

for a simple data structure such as so: ID parentID Text Price 1 Root 2 1 Flowers 3 1 Electro 4 2 Rose 10 5 2 Violet 5 6 4 Red Rose 12 7 3 Television 100 8 3 Radio 70 9 8 Webradio 90 For reference, the hierarchy tree looks like this: ID Text Price 1 Root |2 Flowers |-4 Rose 10 | |-6 Red Rose 12 |-5 Violet 5 |3 Electro |-7 Television 100 |-8 Radio 70 |-9 Webradio 90 I'd like to count the number of children per level. So I would get a new column "NoOfChildren" like so: ID parentID Text Price NoOfChildren 1 Root 8 2 1 Flowers 3 3 1 Electro 3 4 2 Rose 10 1 5 2 Violet 5 0 6 4 Red Rose 12 0 7 3

I was wondering if there is a way to define hierarchy (not just order of execution) between rules and control the rule execution - i.e. if the parent rule fired then the ones below should not be evaluated etc... Information in this thread is an option but it is essentially IF/THEN/ELSE Is there a different option? thanks I am not sure if I understand your question, but using a combination of Activation Groups and the traditional conflict resolution strategies might achieve what you need. For instance, lets say you have 3 rules, A, B and C. You want to use, lets say, salience to give priority

I am creating a botanical database where the plants will be organized by their taxonomy: Life Domain Kingdom Phylum Class Order Family Genus Species I was considering using the example put forth by the article Managing Hierarchical Data in MySQL , however it is adding the above list as records inside the table....and I'm not sure if that is the best thing to do since I will be having multiple species per genus and multiple genus per family and so on. What would you suggest is the best way to approach this problem. Thanks in advance. Ante I worked with similar data, and I made it in 2 parts. In

I have one enum 'class' called Example as follows: enum Example { //enums belonging to group A: enumA1, enumA2, enumA3, //enums belonging to group B: enumB1, enumB2, enumB3, //enums belonging to group C: enumC1, enumC2, enumC3; } It's important for my project they all enums I work with belong to Example (since this is an argument in a constructor of a class). How do I use enum hierarchy/nesting in order to achieve the following: A method that tests whether an enum is of group A, B or C. For example, something like Example.enumA1.isGroupBelonging(Group.A) or isGroupBelonging(Example.enumA1

I'm working on a 2D game that has a huge amount of dynamic entities. For fun's sake, let's call them soldiers, and let's say there are 50000 of them (which I just randomly thought up, it might be much more or much less :)). All these soldiers are moving every frame according to rules - think boids / flocking / steering behaviour. For each soldier, to update it's movement I need the X soldiers that are closest to the one I'm processing. What would be the best spatial hierarchy to store them to facilitate calculations like this without too much overhead ? (All entities are updated/moved every