topical media & game development
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professional-php-03-class.PropertyObject.php / php



  <?php
    require_once('interface.Validator.php');
  
    abstract class PropertyObject implements Validator {
     
      protected propertyTable = array();     //stores name/value pairs
                                              //that hook properties to
                                              //database field names
                                             
      protected changedProperties = array(); //List of properties that
                                              //have been modified
     
      protected data;                        //Actual data from
                                              //the database
                                             
      protected errors = array();            //Any validation errors
                                              //that might have occurred
                                            
     
      public function __construct(arData) {
        this->data = arData;
      }
     
      function __get(propertyName) {
        if(!array_key_exists(propertyName, this->propertyTable))
          throw new Exception("Invalid property \"propertyName\"!");
       
        if(method_exists(this, 'get' . propertyName)) {
          return call_user_func(array(this, 'get' . propertyName));
        } else {
          return this->data[this->propertyTable[propertyName]];
        }
      }
   
      function __set(propertyName, value) {
        if(!array_key_exists(propertyName, this->propertyTable))
          throw new Exception("Invalid property \"propertyName\"!");
       
        if(method_exists(this, 'set' . propertyName)) {
          return call_user_func(
                                array(this, 'set' . propertyName),
                                value
                               );
        } else {
         
          //If the value of the property really has changed
          //and it's not already in the changedProperties array,
          //add it. 
          if(this->propertyTable[propertyName] != value &&
             !in_array(propertyName, this->changedProperties)) {
            this->changedProperties[] = propertyName;
          }
         
          //Now set the new value
          this->data[this->propertyTable[propertyName]] = value;
         
        }
      }
       
      function validate() {
  
      }
   
    }
  ?>
[] readme course(s) preface I 1 2 II 3 4 III 5 6 7 IV 8 9 10 V 11 12 afterthought(s) appendix reference(s) example(s) resource(s) _

(C) Æliens 20/2/2008

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