OOP

fontener

I am going to attempt and explain my problem without confusing anyone (no promises).

Ok, so I have a few classes:

Building
Story
Space

I create a building object.
I create a space object.
Then I create a story object (a floor).
I add the space to the story
and I add the story to the building.

Now each space has a set square footage, however, there are times when I might want to combine multiple spaces into a single space or split a single space into multiple spaces.

For example:
I have a floor with Suite 102 and Suite 104. These suites are adjacent and can be combined into a single suite.
OR
I have a floor with a single space (the entire floor) that can be divided into 10 separate suites.

So I guess my problem lies in which class I should create the methods to perform the tasks.

Here's a visual for clarity sake:

Building Object
(
    [floors] => Array
        (
            [0] => Story Object
                (
                    [spaces:Story:private] => Array
                        (
                            [0] => Space Object
                                (
                                    [suite] => 102
                                    [squareFootage] => 1482
                                    [occupant] => 
                                    [divisible] =>
                                )

                        [1] => Space Object
                            (
                                [suite] => 104
                                [squareFootage] => 2483
                                [occupant] => 
                                [divisible] =>
                            )

                    )

            )
        [1] => Story Object
            (
                [spaces:Story:private] => Array
                    (
                        [0] => Space Object
                            (
                                [suite] => 200
                                [squareFootage] => 3965
                                [occupant] => 
                                [divisible] =>
                            )

                    )

            )

    )

)

Bonesnap

Personally I would use the story class for the combine and split methods.

fontener

How would I go about the divideSpace() method so that after it divides the space to create a number of new spaces, it also removes the original space.

For example, let's say I have a space of 1000 square feet and i want to divide it into 3 spaces (400 square feet, 400 square feet, and 200 square feet)

I apologize for being such an OOP NEWB.

class Floor 
{
	private $squareFeet = 0;
	private $spaces = array();

function __construct()
{

}

public function addSpace(Space $space)
{
	array_push($this->spaces, $space);
}

public function removeSpace(Space $space)
{
	if(($key = array_search($space, $this->spaces)) !== FALSE) {
		unset($this->spaces[$key]);
	} else {
		throw new Exception( "Cannot remove this space.");
	}
}

// Divide a single space into multiple spaces
public function divideSpace(Space $space)
{
	//If space has occupant, it cannot be divided
	if ($space->hasOccupant())
		throw new Exception( "This space is occupied! Cannot divide an occupied space." );

	// Total divided spaces square footage must be equal to the original space square footage

}

// Combine multiple spaces into a single space
public function uniteSpaces()
{
	// The new space square footage must equal the sum of the spaces being united

}
}

class Space
{
	private $squareFootage;
	private $occupant;
	private $divisible = FALSE;

function __construct($size)
{
	$this->squareFootage = $size;
}

function hasOccupant(){
	if($this->occupant)
		return TRUE;
	return FALSE;
}

function setOccupant($occupant)
{
	$this->occupant = $occupant;
}
}

Bonesnap

fontener;10998706 wrote:
How would I go about the divideSpace() method so that after it divides the space to create a number of new spaces, it also removes the original space.

For example, let's say I have a space of 1000 square feet and i want to divide it into 3 spaces (400 square feet, 400 square feet, and 200 square feet)

Can the original space not be changed to be one of the newer ones, or does that not fit with your business logic?

For example:

Space 1 = 1000 feet

Split it:

Space 1 = 400 feet
Space 2 = 400 feet
Space 3 = 200 feet

Otherwise, create the three new Spaces and then in your Spaces array in your Story object, unset the "old" Space, which will effectively remove it.

fontener

Ok, so I have an object like below and I need to generate methods for acquiring the total available space for the building(add up square footage of all spaces in building where the status is set to available), the max contiguous space(the highest max contiguous space of all available spaces), the min divisible space(the lowest min divisible of all available spaces), and the rental rate(lowest '-' highest rental rates of all available spaces).

Once these arrays start getting deep, I start getting lost. Guess it's the newb in me. Any help is appreciated.

Derokorian

Iterate through the floors then for each floor you'll need to iterate the spaces on the floor. Then for each space check if its available and if so add its SQFT to a running total. This is my best guess at what you would need:

class OfficeBuilding {
   function getTotalAvailableSpace() {
      $tot = 0; //Initialize the total
      foreach( $this->floors as $floor ) { // Loop through each floor
         foreach( $floor->spaces as $space ) { // Loop through the spaces on this floor
            if( $space->status == 'Available' ) {
               $tot += $space->squareFootage;
            } // endif available
         } // end space loop
      } // end floor loop
      return $tot;
   }
}

Of course I'm not entirely sure this works, but hopefully it moves you in the right direction. Hope it helps.

Bonesnap

Agreed, getting into objects that have arrays of other objects can be daunting.

I have a question though before I take a stab:

I see in the Floor class you have the properties size and totalSpace. I'm curious what the difference between the two are. Is the size the total possible space for that floor? So for example, the first Floor object has a size of 1200 but totalSpace of 800. Does that mean you could add another OfficeSpace object of 400 square feet to that floor?

fontener

Bonesnap;10998946 wrote:
Agreed, getting into objects that have arrays of other objects can be daunting.

I have a question though before I take a stab:

I see in the Floor class you have the properties size and totalSpace. I'm curious what the difference between the two are. Is the size the total possible space for that floor? So for example, the first Floor object has a size of 1200 but totalSpace of 800. Does that mean you could add another OfficeSpace object of 400 square feet to that floor?

That is correct. So you set the floor size when you create the floor object, therefore, when you are creating spaces for the floor, you cannot exceed the given floor space.
(Most likely an unnecessary precaution.. but I like to think people are completely stupid)

fontener

Derokorian;10998945 wrote:
Iterate through the floors then for each floor you'll need to iterate the spaces on the floor. Then for each space check if its available and if so add its SQFT to a running total. This is my best guess at what you would need:

Of course I'm not entirely sure this works, but hopefully it moves you in the right direction. Hope it helps.

It works as long as I make the properties public. And it does help move me in the right direction, thank you!

fontener

I forgot.. I need to add minDivisible and maxContiguous properties to the spaces object before we can calculate any of that. But what my head is thinking, is to iterate through the spaces much like the code provided by Derokorian and place the values into an array of their own and return the Max/Min of the respective array?