phptek / silverstripe-jsontext

            throw new JSONTextException($msg);

        }

        if ($isEx && !$this->isValidExpression($operator)) {

            $msg = 'JSON expression: ' . $operator . ' is invalid.';

            throw new JSONTextException($msg);

        }

        $validType = ($isEx ? self::JSONTEXT_QUERY_JSONPATH : self::JSONTEXT_QUERY_OPERATOR);

        if ($marshalled = $this->marshallQuery(func_get_args(), $validType)) {

        if (!$expr) {

            $this->value = $value;

        } else {

            if (!$this->isValidExpression($expr)) {

                $msg = 'Invalid JSONPath expression: ' . $expr . ' passed to ' . __FUNCTION__;

                throw new JSONTextException($msg);

            }

            if (!$this->jsonStore->set($expr, $value)) {

                $msg = 'Failed to properly set custom data to the JSONStore in ' . __FUNCTION__;