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navigation MDL-20227 Added compare function

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This allows us to compare the modinfo stored in the cache with that against that active course
This commit is contained in:
samhemelryk 2009-09-08 08:49:12 +00:00
parent 3175908906
commit fdd35767f3
1 changed files with 24 additions and 3 deletions
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27
lib/navigationlib.php
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@ -912,7 +912,7 @@ class global_navigation extends navigation_node {
$course = $PAGE->course;
}
if (!$this->cache->cached('modinfo'.$course->id)) {
if (!$this->cache->compare('modinfo'.$course->id, $course->modinfo)) {
$this->cache->{'modinfo'.$course->id} = get_fast_modinfo($course);
}
$modinfo = $this->cache->{'modinfo'.$course->id};
@ -969,7 +969,7 @@ class global_navigation extends navigation_node {
$course = $PAGE->course;
}
if (!$this->cache->cached('modinfo'.$course->id)) {
if (!$this->cache->compare('modinfo'.$course->id, $course->modinfo)) {
$this->cache->{'modinfo'.$course->id} = get_fast_modinfo($course);
}
$modinfo = $this->cache->{'modinfo'.$course->id};
@ -1276,7 +1276,7 @@ class global_navigation extends navigation_node {
$sections = $this->cache->$coursesecstr;
}
if (!$this->cache->cached('modinfo'.$course->id)) {
if (!$this->cache->compare('modinfo'.$course->id, $course->modinfo)) {
$this->cache->{'modinfo'.$course->id} = get_fast_modinfo($course);
}
$modinfo = $this->cache->{'modinfo'.$course->id};
@ -3073,6 +3073,27 @@ class navigation_cache {
}
return true;
}
/**
* Compare something to it's equivilant in the cache
*
* @param string $key
* @param mixed $value
* @param bool $serialise Whether to serialise the value before comparison
* this should only be set to false if the value is already
* serialised
* @return bool If the value is the same false if it is not set or doesn't match
*/
public function compare($key, $value, $serialise=true) {
if ($this->cached($key)) {
if ($serialise) {
$value = serialize($value);
}
if ($this->session[$key][self::CACHEVALUE] === $value) {
return true;
}
}
return false;
}
/**
* Whipes the entire cache, good to force regeneration
*/