public function getConflictsCriteria()
{
// get conflicting page locks
// if lock for a new page...
// anyway one should also check if a page does not exist
// (done somewhere else)
if ($this->getPageId() == null) {
$c = new Criteria();
$c->add("page_unix_name", $this->getPageUnixName());
$c->add("site_id", $this->getSiteId());
if ($this->getLockId() != null) {
$c->add("lock_id", $this->getLockId(), "!=");
}
} else {
// now if the page exists.
if ($this->getMode() == "page") {
// conflicts with any other type of lock for this page...
$c = new Criteria();
$c->add("page_id", $this->getPageId());
if ($this->getLockId() != null) {
$c->add("lock_id", $this->getLockId(), "!=");
}
}
if ($this->getMode() == "append") {
// conflicts only with "page" mode
$c = new Criteria();
$c->add("page_id", $this->getPageId());
if ($this->getLockId() != null) {
$c->add("lock_id", $this->getLockId(), "!=");
}
$c->add("mode", "page");
}
if ($this->getMode() == "section") {
// conflicts with "page" mode and "section" mode when regions overlap
$c = new Criteria();
// create query by hand...
$q = "page_id = " . $this->getPageId() . " ";
if ($this->getLockId() != null) {
$q .= "AND lock_id != " . $this->getLockId() . " ";
}
$q .= "AND (mode = 'page' " . "OR (" . "mode = 'section' AND (" . "(range_start >= '" . db_escape_string($this->getRangeStart()) . "' AND range_start <= '" . db_escape_string($this->getRangeEnd()) . "') " . "OR (range_end >= '" . db_escape_string($this->getRangeStart()) . "' AND range_end <= '" . db_escape_string($this->getRangeEnd()) . "') " . "OR (range_start <= '" . db_escape_string($this->getRangeStart()) . "' AND range_end >= '" . db_escape_string($this->getRangeEnd()) . "')" . ")))";
$c->setExplicitWhere($q);
}
}
return $c;
}
