* @param mixed $v key field value, or leave out for primary key lookup
* @return mixed Memcached_DataObject subtype or false
*/
- function &staticGet($cls, $k, $v=null)
+ static function getClassKV($cls, $k, $v=null)
{
+ if (!is_a($cls, __CLASS__, true)) {
+ throw new Exception('Trying to fetch ' . __CLASS__ . ' into a non-related class');
+ }
if (is_null($v)) {
$v = $k;
- // XXX: HACK!
- $i = new $cls;
- $keys = $i->keys();
+ $keys = self::pkeyCols($cls);
+ if (count($keys) > 1) {
+ // FIXME: maybe call pkeyGetClass() ourselves?
+ throw new Exception('Use pkeyGetClass() for compound primary keys');
+ }
$k = $keys[0];
- unset($i);
}
- $i = Memcached_DataObject::getcached($cls, $k, $v);
+ $i = self::getcached($cls, $k, $v);
if ($i === false) { // false == cache miss
- $i = DB_DataObject::factory($cls);
- if (empty($i)) {
- $i = false;
- return $i;
- }
+ $i = new $cls;
$result = $i->get($k, $v);
if ($result) {
// Hit!
}
/**
- * @fixme Should this return false on lookup fail to match staticGet?
+ * Get multiple items from the database by key
+ *
+ * @param string $cls Class to fetch
+ * @param string $keyCol name of column for key
+ * @param array $keyVals key values to fetch
+ * @param boolean $skipNulls return only non-null results?
+ *
+ * @return array Array of objects, in order
+ */
+ static function multiGetClass($cls, $keyCol, array $keyVals, $skipNulls=true)
+ {
+ $result = self::pivotGetClass($cls, $keyCol, $keyVals);
+
+ $values = array_values($result);
+
+ if ($skipNulls) {
+ $tmp = array();
+ foreach ($values as $value) {
+ if (!empty($value)) {
+ $tmp[] = $value;
+ }
+ }
+ $values = $tmp;
+ }
+
+ return new ArrayWrapper($values);
+ }
+
+ /**
+ * Get multiple items from the database by key
+ *
+ * @param string $cls Class to fetch
+ * @param string $keyCol name of column for key
+ * @param array $keyVals key values to fetch
+ * @param boolean $otherCols Other columns to hold fixed
+ *
+ * @return array Array mapping $keyVals to objects, or null if not found
+ */
+ static function pivotGetClass($cls, $keyCol, array $keyVals, array $otherCols = array())
+ {
+ if (!is_a($cls, __CLASS__, true)) {
+ throw new Exception('Trying to fetch ' . __CLASS__ . ' into a non-related class');
+ }
+ if (is_array($keyCol)) {
+ foreach ($keyVals as $keyVal) {
+ $result[implode(',', $keyVal)] = null;
+ }
+ } else {
+ $result = array_fill_keys($keyVals, null);
+ }
+
+ $toFetch = array();
+
+ foreach ($keyVals as $keyVal) {
+
+ if (is_array($keyCol)) {
+ $kv = array_combine($keyCol, $keyVal);
+ } else {
+ $kv = array($keyCol => $keyVal);
+ }
+
+ $kv = array_merge($otherCols, $kv);
+
+ $i = self::multicache($cls, $kv);
+
+ if ($i !== false) {
+ if (is_array($keyCol)) {
+ $result[implode(',', $keyVal)] = $i;
+ } else {
+ $result[$keyVal] = $i;
+ }
+ } else if (!empty($keyVal)) {
+ $toFetch[] = $keyVal;
+ }
+ }
+
+ if (count($toFetch) > 0) {
+ $i = new $cls;
+ foreach ($otherCols as $otherKeyCol => $otherKeyVal) {
+ $i->$otherKeyCol = $otherKeyVal;
+ }
+ if (is_array($keyCol)) {
+ $i->whereAdd(self::_inMultiKey($i, $keyCol, $toFetch));
+ } else {
+ $i->whereAddIn($keyCol, $toFetch, $i->columnType($keyCol));
+ }
+ if ($i->find()) {
+ while ($i->fetch()) {
+ $copy = clone($i);
+ $copy->encache();
+ if (is_array($keyCol)) {
+ $vals = array();
+ foreach ($keyCol as $k) {
+ $vals[] = $i->$k;
+ }
+ $result[implode(',', $vals)] = $copy;
+ } else {
+ $result[$i->$keyCol] = $copy;
+ }
+ }
+ }
+
+ // Save state of DB misses
+
+ foreach ($toFetch as $keyVal) {
+ $r = null;
+ if (is_array($keyCol)) {
+ $r = $result[implode(',', $keyVal)];
+ } else {
+ $r = $result[$keyVal];
+ }
+ if (empty($r)) {
+ if (is_array($keyCol)) {
+ $kv = array_combine($keyCol, $keyVal);
+ } else {
+ $kv = array($keyCol => $keyVal);
+ }
+ $kv = array_merge($otherCols, $kv);
+ // save the fact that no such row exists
+ $c = self::memcache();
+ if (!empty($c)) {
+ $ck = self::multicacheKey($cls, $kv);
+ $c->set($ck, null);
+ }
+ }
+ }
+ }
+
+ return $result;
+ }
+
+ static function _inMultiKey($i, $cols, $values)
+ {
+ $types = array();
+
+ foreach ($cols as $col) {
+ $types[$col] = $i->columnType($col);
+ }
+
+ $first = true;
+
+ $query = '';
+
+ foreach ($values as $value) {
+ if ($first) {
+ $query .= '( ';
+ $first = false;
+ } else {
+ $query .= ' OR ';
+ }
+ $query .= '( ';
+ $i = 0;
+ $firstc = true;
+ foreach ($cols as $col) {
+ if (!$firstc) {
+ $query .= ' AND ';
+ } else {
+ $firstc = false;
+ }
+ switch ($types[$col]) {
+ case 'string':
+ case 'datetime':
+ $query .= sprintf("%s = %s", $col, $i->_quote($value[$i]));
+ break;
+ default:
+ $query .= sprintf("%s = %s", $col, $value[$i]);
+ break;
+ }
+ }
+ $query .= ') ';
+ }
+
+ if (!$first) {
+ $query .= ' )';
+ }
+
+ return $query;
+ }
+
+ static function pkeyCols($cls)
+ {
+ if (!is_a($cls, __CLASS__, true)) {
+ throw new Exception('Trying to fetch ' . __CLASS__ . ' into a non-related class');
+ }
+ $i = new $cls;
+ $types = $i->keyTypes();
+ ksort($types);
+
+ $pkey = array();
+
+ foreach ($types as $key => $type) {
+ if ($type == 'K' || $type == 'N') {
+ $pkey[] = $key;
+ }
+ }
+
+ return $pkey;
+ }
+
+ static function listFindClass($cls, $keyCol, array $keyVals)
+ {
+ if (!is_a($cls, __CLASS__, true)) {
+ throw new Exception('Trying to fetch ' . __CLASS__ . ' into a non-related class');
+ }
+
+ $i = new $cls;
+ $i->whereAddIn($keyCol, $keyVals, $i->columnType($keyCol));
+ if (!$i->find()) {
+ throw new NoResultException($i);
+ }
+
+ sprintf(__CLASS__ . "() got {$i->N} results for class $cls key $keyCol");
+ return $i;
+ }
+
+ static function listGetClass($cls, $keyCol, array $keyVals)
+ {
+ if (!is_a($cls, __CLASS__, true)) {
+ throw new Exception('Trying to fetch ' . __CLASS__ . ' into a non-related class');
+ }
+ $pkeyMap = array_fill_keys($keyVals, array());
+ $result = array_fill_keys($keyVals, array());
+
+ $pkeyCols = self::pkeyCols($cls);
+
+ $toFetch = array();
+ $allPkeys = array();
+
+ // We only cache keys -- not objects!
+
+ foreach ($keyVals as $keyVal) {
+ $l = self::cacheGet(sprintf("%s:list-ids:%s:%s", strtolower($cls), $keyCol, $keyVal));
+ if ($l !== false) {
+ $pkeyMap[$keyVal] = $l;
+ foreach ($l as $pkey) {
+ $allPkeys[] = $pkey;
+ }
+ } else {
+ $toFetch[] = $keyVal;
+ }
+ }
+
+ if (count($allPkeys) > 0) {
+ $keyResults = self::pivotGetClass($cls, $pkeyCols, $allPkeys);
+
+ foreach ($pkeyMap as $keyVal => $pkeyList) {
+ foreach ($pkeyList as $pkeyVal) {
+ $i = $keyResults[implode(',',$pkeyVal)];
+ if (!empty($i)) {
+ $result[$keyVal][] = $i;
+ }
+ }
+ }
+ }
+
+ if (count($toFetch) > 0) {
+ try {
+ $i = self::listFindClass($cls, $keyCol, $toFetch);
+
+ while ($i->fetch()) {
+ $copy = clone($i);
+ $copy->encache();
+ $result[$i->$keyCol][] = $copy;
+ $pkeyVal = array();
+ foreach ($pkeyCols as $pkeyCol) {
+ $pkeyVal[] = $i->$pkeyCol;
+ }
+ $pkeyMap[$i->$keyCol][] = $pkeyVal;
+ }
+ } catch (NoResultException $e) {
+ // no results foudn for our keyVals, so we leave them as empty arrays
+ }
+ foreach ($toFetch as $keyVal) {
+ self::cacheSet(sprintf("%s:list-ids:%s:%s", strtolower($cls), $keyCol, $keyVal),
+ $pkeyMap[$keyVal]);
+ }
+ }
+
+ return $result;
+ }
+
+ function columnType($columnName)
+ {
+ $keys = $this->table();
+ if (!array_key_exists($columnName, $keys)) {
+ throw new Exception('Unknown key column ' . $columnName . ' in ' . join(',', array_keys($keys)));
+ }
+
+ $def = $keys[$columnName];
+
+ if ($def & DB_DATAOBJECT_INT) {
+ return 'integer';
+ } else {
+ return 'string';
+ }
+ }
+
+ /**
+ * @todo FIXME: Should this return false on lookup fail to match getKV?
*/
- function pkeyGet($cls, $kv)
+ static function pkeyGetClass($cls, array $kv)
{
+ if (!is_a($cls, __CLASS__, true)) {
+ throw new Exception('Trying to fetch ' . __CLASS__ . ' into a non-related class');
+ }
$i = Memcached_DataObject::multicache($cls, $kv);
if ($i !== false) { // false == cache miss
return $i;
} else {
- $i = DB_DataObject::factory($cls);
- if (empty($i) || PEAR::isError($i)) {
- return false;
- }
+ $i = new $cls;
foreach ($kv as $k => $v) {
- $i->$k = $v;
+ if (is_null($v)) {
+ // XXX: possible SQL injection...? Don't
+ // pass keys from the browser, eh.
+ $i->whereAdd("$k is null");
+ } else {
+ $i->$k = $v;
+ }
}
if ($i->find(true)) {
$i->encache();
return $ckeys;
}
- function multicache($cls, $kv)
+ static function multicache($cls, $kv)
{
ksort($kv);
$c = self::memcache();
'delete',
'update',
'find');
- $ignoreStatic = array('staticGet',
+ $ignoreStatic = array('getKV',
+ 'getClassKV',
'pkeyGet',
+ 'pkeyGetClass',
'cachedQuery');
$here = get_class($this); // if we get confused
$bt = debug_backtrace();
continue;
}
if (in_array($func, $ignoreStatic)) {
- continue; // @fixme this shouldn't be needed?
+ continue; // @todo FIXME: This shouldn't be needed?
}
$here = get_class($frame['object']) . '->' . $func;
break;
if (!$dsn) {
// TRANS: Exception thrown when database name or Data Source Name could not be found.
- throw new Exception(_("No database name or DSN found anywhere."));
+ throw new Exception(_('No database name or DSN found anywhere.'));
}
return $dsn;
projects / quix0rs-gnu-social.git / blobdiff