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Notice::whereSinceId() and Notice::whereMaxId() encapsulate logic for building where clauses for since_id/max_id parameters. Can override the field names from 'id' and 'created'.

This commit is contained in:
Brion Vibber 2010-12-17 13:03:18 -08:00
parent 53dd2583fc
commit 9e8bbff8ac
1 changed files with 44 additions and 4 deletions
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48
classes/Notice.php
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@ -668,14 +668,14 @@ class Notice extends Memcached_DataObject
$notice->whereAdd('is_local !='. Notice::GATEWAY);
}
$since = Notice::getAsTimestamp($since_id);
$since = Notice::whereSinceId($since_id);
if ($since) {
$notice->whereAdd(sprintf("(created = '%s' and id > %d) or (created > '%s')", $since, $since_id, $since));
$notice->whereAdd($since);
}
$max = Notice::getAsTimestamp($max_id);
$max = Notice::whereMaxId($max_id);
if ($max) {
$notice->whereAdd(sprintf("(created < '%s') or (created = '%s' and id <= %d)", $max, $max, $max_id));
$notice->whereAdd($max);
}
$ids = array();
@ -2006,4 +2006,44 @@ class Notice extends Memcached_DataObject
return false;
}
/**
* Build an SQL 'where' fragment for timestamp-based sorting from a since_id
* parameter, matching notices posted after the given one (exclusive).
*
* If the referenced notice can't be found, will return false.
*
* @param int $id
* @param string $idField
* @param string $createdField
* @return mixed string or false if no match
*/
public static function whereSinceId($id, $idField='id', $createdField='created')
{
$since = Notice::getAsTimestamp($id);
if ($since) {
return sprintf("($createdField = '%s' and $idField > %d) or ($createdField > '%s')", $since, $id, $since);
}
return false;
}
/**
* Build an SQL 'where' fragment for timestamp-based sorting from a max_id
* parameter, matching notices posted before the given one (inclusive).
*
* If the referenced notice can't be found, will return false.
*
* @param int $id
* @param string $idField
* @param string $createdField
* @return mixed string or false if no match
*/
public static function whereMaxId($id, $idField='id', $createdField='created')
{
$max = Notice::getAsTimestamp($id);
if ($max) {
return sprintf("($createdField < '%s') or ($createdField = '%s' and $idField <= %d)", $max, $max, $id);
}
return false;
}
}