<?php
	/**
	 * InsertExpression
	 *
	 * @author Arnia Software
	 * @package /classes/db/queryparts/expression
	 * @version 0.1
	 */
	class InsertExpression extends Expression {
		/**
		 * argument
		 * @var object
		 */
		var $argument;

		/**
		 * constructor
		 * @param string $column_name
		 * @param object $argument
		 * @return void
		 */
		function InsertExpression($column_name, $argument){
			parent::Expression($column_name);
			$this->argument = $argument;
		}

		function getValue($with_values = true){
			if($with_values)
				return $this->argument->getValue();
			return '?';
		}

		function show(){
					if(!$this->argument) return false;
					$value = $this->argument->getValue();
					if(!isset($value)) return false;
					return true;
		}

		function getArgument(){
			return $this->argument;
		}

		function getArguments()
		{
			if ($this->argument)
			    return array($this->argument);
			else
			    return array();
		}
	}

?>
