/**
* Creates a rule description instance with specified XML string.
*
* @param string $ruleDescriptionXml A XML string representing the
* rule description.
*
* @return none
*/
public static function create($ruleDescriptionXml)
{
$ruleDescription = new RuleDescription();
$root = simplexml_load_string($ruleDescriptionXml);
$nameSpaces = $root->getNameSpaces();
$ruleDescriptionArray = (array) $root;
if (array_key_exists('Filter', $ruleDescriptionArray)) {
$filterItem = $ruleDescriptionArray['Filter'];
$filterAttributes = $filterItem->attributes('i', true);
$filterItemArray = (array) $filterItem;
$filterType = (string) $filterAttributes['type'];
$filter = null;
switch ($filterType) {
case 'TrueFilter':
$filter = new TrueFilter();
break;
case 'FalseFilter':
$filter = new FalseFilter();
break;
case 'CorrelationFilter':
$filter = new CorrelationFilter();
if (array_key_exists('CorrelationId', $filterItemArray)) {
$filter->setCorrelationId((string) $filterItemArray['CorrelationId']);
}
break;
case 'SqlFilter':
$filter = new SqlFilter();
if (array_key_exists('SqlExpression', $filterItemArray)) {
$filter->setSqlExpression((string) $filterItemArray['SqlExpression']);
}
break;
default:
$filter = new Filter();
}
if (array_key_exists('CompatibilityLevel', $filterItemArray)) {
$filter->setCompatibilityLevel((int) $filterItemArray['CompatibilityLevel']);
}
$ruleDescription->setFilter($filter);
}
if (array_key_exists('Action', $ruleDescriptionArray)) {
$actionItem = $ruleDescriptionArray['Action'];
$actionAttributes = $actionItem->attributes('i', true);
$actionType = (string) $actionAttributes['type'];
$action = null;
switch ($actionType) {
case 'EmptyRuleAction':
$action = new EmptyRuleAction();
break;
case 'SqlRuleAction':
$action = new SqlRuleAction();
if (array_key_exists('SqlExpression', $actionItem)) {
$action->setSqlExpression((string) $actionItem['SqlExpression']);
}
break;
default:
$action = new Action();
}
$ruleDescription->setAction($action);
}
if (array_key_exists('Name', $ruleDescriptionArray)) {
$ruleDescription->setName((string) $ruleDescriptionArray['Name']);
}
return $ruleDescription;
}
/**
* Creates a true filter with default parameter.
*/
public function __construct()
{
parent::__construct();
$this->attributes['xsi:type'] = 'TrueFilter';
}