/**
* @param QOM\SelectorInterface|QOM\JoinInterface $left
* @param QOM\SelectorInterface $right
* @param QOM\JoinConditionInterface $condition
*
* @return string
*
* @throws NotImplementedException if a SameNodeJoinCondtion is used.
*/
public function walkJoinCondition($left, QOM\SelectorInterface $right, QOM\JoinConditionInterface $condition)
{
if ($condition instanceof QOM\ChildNodeJoinConditionInterface) {
return $this->walkChildNodeJoinCondition($condition);
}
if ($condition instanceof QOM\DescendantNodeJoinConditionInterface) {
return $this->walkDescendantNodeJoinCondition($condition);
}
if ($condition instanceof QOM\EquiJoinConditionInterface) {
if ($left instanceof QOM\SelectorInterface) {
$selectorName = $left->getSelectorName();
} else {
$selectorName = $this->getRightJoinSelector($left->getJoinCondition());
}
return $this->walkEquiJoinCondition($selectorName, $right->getSelectorName(), $condition);
}
if ($condition instanceof QOM\SameNodeJoinConditionInterface) {
throw new NotImplementedException("SameNodeJoinCondtion");
}
}
/**
* Selector ::= nodeTypeName ['AS' selectorName]
* nodeTypeName ::= Name
*
* @param QOM\SelectorInterface $selector
* @return string
*/
protected function convertSelector(QOM\SelectorInterface $selector)
{
return $this->generator->evalSelector($selector->getNodeTypeName(), $selector->getSelectorName());
}
