function views_content_cache_plugin_cache::cache_expire in Views content cache 7.3

Same name and namespace in other branches

1. 6.2 views/views_content_cache_plugin_cache.inc \views_content_cache_plugin_cache::cache_expire()

Return the expiry time for this cache plugin.

This should be the last time that the content has changed, altered to allow for the the min/max lifetimes.

Overrides views_plugin_cache::cache_expire

File

views/views_content_cache_plugin_cache.inc, line 87

Provides the Views content cache, views cache plugin.

Class

views_content_cache_plugin_cache

Simple caching of query results for Views displays. Includes listening for changes/posts/deletions of certain node types.

Code

function cache_expire($type) {
  $cutoff = 0;

  // Retrieve the latest update time matching the settings on this View.
  $cid = array();
  if (!empty($this->options['keys'])) {
    foreach ($this->options['keys'] as $key_id => $key_values) {
      if ($plugin = views_content_cache_get_plugin($key_id)) {
        $cid[$key_id] = $plugin
          ->view_key($key_values, $this);
      }
    }
  }
  if (!empty($cid) && ($timestamp = views_content_cache_update_get($cid))) {
    $cutoff = $timestamp;
  }

  // If there's a minimum lifetime, enforce it:
  if ($min_lifespan = $this->options[$type . '_min_lifespan']) {
    $min_lifespan = REQUEST_TIME - $min_lifespan;
    $cutoff = min($min_lifespan, $cutoff);
  }

  // Only enforce a maximum lifetime if it's been specifically selected:
  if ($max_lifespan = $this->options[$type . '_max_lifespan']) {
    if ($max_lifespan != -1) {
      $max_lifespan = REQUEST_TIME - $max_lifespan;
      $cutoff = max($max_lifespan, $cutoff);
    }
  }
  return $cutoff;
}