/**
* Validates the given condition formula and checks if the given conditions match the formula.
*
* @param array $object
*
* @return bool
*/
public function validate($object)
{
// validate only custom expressions
if ($object['evaltype'] != CONDITION_EVAL_TYPE_EXPRESSION) {
return true;
}
// check if the formula is valid
$parser = new CConditionFormula();
if (!$parser->parse($object['formula'])) {
$this->error($this->messageInvalidFormula, $object['formula'], $parser->error);
return false;
}
// check that all conditions used in the formula are defined in the "conditions" array
$conditions = zbx_toHash($object['conditions'], 'formulaid');
$constants = array_unique(zbx_objectValues($parser->constants, 'value'));
foreach ($constants as $constant) {
if (!array_key_exists($constant, $conditions)) {
$this->error($this->messageMissingCondition, $constant, $object['formula']);
return false;
}
unset($conditions[$constant]);
}
// check that the "conditions" array has no unused conditions
if ($conditions) {
$condition = reset($conditions);
$this->error($this->messageUnusedCondition, $condition['formulaid'], $object['formula']);
return false;
}
return true;
}
/**
* Validates the given condition formula and checks if the given conditions match the formula.
*
* @param array $object
*
* @return bool
*/
public function validate($object)
{
if ($object['evaltype'] == CONDITION_EVAL_TYPE_AND) {
// get triggers count in formula
$trigger_count = 0;
foreach ($object['conditions'] as $condition) {
if (array_key_exists('conditiontype', $condition) && array_key_exists('operator', $condition) && $condition['conditiontype'] == CONDITION_TYPE_TRIGGER && $condition['operator'] == CONDITION_OPERATOR_EQUAL) {
$trigger_count++;
}
}
// check if multiple triggers are compared with AND
if ($trigger_count > 1) {
$this->error($this->messageAndWithSeveralTriggers);
return false;
}
}
// validate only custom expressions
if ($object['evaltype'] != CONDITION_EVAL_TYPE_EXPRESSION) {
return true;
}
// check if the formula is valid
$parser = new CConditionFormula();
if (!$parser->parse($object['formula'])) {
$this->error($this->messageInvalidFormula, $object['formula'], $parser->error);
return false;
}
// check that all conditions used in the formula are defined in the "conditions" array
$conditions = zbx_toHash($object['conditions'], 'formulaid');
$constants = array_unique(zbx_objectValues($parser->constants, 'value'));
foreach ($constants as $constant) {
if (!array_key_exists($constant, $conditions)) {
$this->error($this->messageMissingCondition, $constant, $object['formula']);
return false;
}
unset($conditions[$constant]);
}
// check that the "conditions" array has no unused conditions
if ($conditions) {
$condition = reset($conditions);
$this->error($this->messageUnusedCondition, $condition['formulaid'], $object['formula']);
return false;
}
return true;
}
/**
* Replace formula IDs with numeric IDs using the pairs given in $ids.
*
* Notes:
* - $formula must be valid before the function call
* - $ids must contain all constants used in the $formula
*
* @param string $formula
* @param array $ids array of formula ID - numeric ID pairs
*
* @return string
*/
public static function replaceLetterIds($formula, array $ids)
{
$parser = new CConditionFormula();
$parser->parse($formula);
foreach (array_reverse($parser->constants) as $constant) {
$formula = substr_replace($formula, '{' . $ids[$constant['value']] . '}', $constant['pos'], strlen($constant['value']));
}
return $formula;
}