/**
* Строит запрос для группы выражений
* @param IExpressionGroup $exprGroup
* @return string
*/
private function buildExpressionGroup(IExpressionGroup $exprGroup)
{
$result = [];
foreach ($exprGroup->getExpressions() as $expression) {
list($leftCond, $operator, $rightCond) = $expression;
$leftCond = $this->protectExpressionValue($leftCond);
$rightCond = $this->protectExpressionValue($rightCond);
$result[] = $leftCond . ' ' . $operator . ' ' . $rightCond;
}
foreach ($exprGroup->getGroups() as $subGroup) {
$result[] = '(' . $this->buildExpressionGroup($subGroup) . ')';
}
if (!count($result)) {
return '1';
// WHERE 1, if no expressions
}
return implode(' ' . $exprGroup->getMode() . ' ', $result);
}
