<?php
	class RecordField{
		private $_name		= NULL;
		private $_type		= NULL;		//string|integer|float
		private $_value		= NULL;		//real DB NULL is 'NULL'
		private $_default	= NULL;
		/**
		 * Contains an associative array with the reference of the RecordField
		 * object of this table as key and as its element an array of references
		 * to the RecordField objets to which this Record item is constraint.
		 *
		 * @var array
		 */
		private $_relationships	= array();
        /**
         * Reference to the Record object instantiated
         * @var <type>
         */
		private $_record           = NULL;
		//Constructor

		public function __construct(){
			$_args 		= func_get_args();
			if(is_array($_args[0])){
				$_args = array_values($_args[0]);
			}
			$_numargs 	= count($_args);

			if($_numargs === 0){
				$this->_name 	= NULL;
				$this->_type 	= NULL;
				$this->_value	= NULL;
				$this->_default = NULL;
			}else{
				if($_numargs >= 1){$this->setName	($_args[0]);}
				if($_numargs >= 2){$this->setType	($_args[1]);}
				if($_numargs >= 3){$this->setValue	($_args[2]);}
				if($_numargs >= 4){$this->setDefault($_args[3]);}
				if($_numargs >= 5){$this->setRecord	($_args[4]);}
			}
		}
		//Accessors & Mutators
		public function getName(){
			return $this->_name;
		}
		public function getType(){
			return $this->_type;
		}
		public function getValue(){
			if(preg_match('/(text|TEXT|blob|BLOB)$/',$this->_type) == true){
				return stripslashes($this->_value);
			}return $this->_value;
		}
		public function getDefault(){
			return $this->_default;
		}
		protected function &getRelationships($fieldname = NULL){
			return ($fieldname)?
						((array_key_exists($fieldname,$this->_relationships))?($this->_relationships[$fieldname]):(NULL))
						:
						($this->_relationships);
		}
		public function &getRecord(){
			return $this->_record;
		}

		public function setName($n){
			$this->_name = (string)($n);
			return $this;
		}
		public function setType($t){
			$this->_type = (string)($t);
			return $this;
		}
		public function setValue($v){
			$this->_value = $this->cast($v);
			return $this;
		}
		public function setDefault($d){
			$this->_default = $this->cast($d);
			return $this;
		}
		public function setRelationship(RecordField $_record_field){
			if(!isset($this->_relationships[$_record_field->getName()])){
				$this->_relationships[$_record_field->getName()] = &$_record_field;
			}
		}
		public function setRecord(Record $_record){
			$this->_record = &$_record;
			return $this;
		}
		//Methods & Functions
		private function cast($v){
			return sql_data_cast($v, $this->_type);
		}
		public function buildXML(){
			$xml_node = new SimpleXMLElement('<RecordField/>');
			$xml_node->addAttribute('name',		(string)($this->_name));
			$xml_node->addAttribute('type',		(string)($this->_type));
			$xml_node->addAttribute('value',	(string)($this->_value));
			$xml_node->addAttribute('default',	(string)($this->_default));
			return $xml_node;
		}
		public function parseXML(SimpleXMLElement $xml_node){
			if($xml_node->getName() == 'RecordField'){
				$this->setName($xml_node['name']);
				$this->setType($xml_node['type']);
				$this->setValue($xml_node['value']);
				$this->setDefault($xml_node['default']);
				return true;
			}return false;
		}
	}