/**
* @param QOM\OperandInterface $operand
*/
private function walkOperand(QOM\OperandInterface $operand)
{
if ($operand instanceof QOM\NodeNameInterface) {
return ZendSearchAdapter::IDX_NODENAME;
}
if ($operand instanceof QOM\NodeLocalNameInterface) {
return ZendSearchAdapter::IDX_NODELOCALNAME;
}
if ($operand instanceof QOM\LiteralInterface) {
return $this->escape($operand->getLiteralValue());
}
if ($operand instanceof QOM\PropertyValueInterface) {
return $this->escape($operand->getPropertyName());
}
if ($operand instanceof QOM\LowerCaseInterface) {
return $this->walkOperand($operand->getOperand());
}
if ($operand instanceof QOM\UpperCaseInterface) {
return $this->walkOperand($operand->getOperand());
}
throw new InvalidQueryException("Dynamic operand " . get_class($operand) . " not yet supported.");
}
