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add methods to Memcached_DataObject for caching compound keys 

darcs-hash:20081002144715-5ed1f-97c8362c4fb4f6a761250b68e2f3311bcc5cba4f.gz
This commit is contained in:
Evan Prodromou 2008-10-02 10:47:15 -04:00
parent f290ae348a
commit 2f71f4d95a
1 changed files with 49 additions and 21 deletions
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70
classes/Memcached_DataObject.php
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@ -43,7 +43,25 @@ class Memcached_DataObject extends DB_DataObject
return $i;
}
}
function &pkeyGet($cls, $kv) {
$i = Memcached_DataObject::multicache($cls, $kv);
if ($i) {
return $i;
} else {
$i = new $cls();
foreach ($kv as $k => $v) {
$i->$k = $v;
}
if ($i->find(true)) {
$i->encache();
return $i;
} else {
return NULL;
}
}
}
function insert() {
$result = parent::insert();
return $result;
@ -96,26 +114,22 @@ class Memcached_DataObject extends DB_DataObject
if (!$c) {
return false;
} else {
$primary = array();
$pkey = array();
$pval = array();
$types = $this->keyTypes();
ksort($types);
foreach ($types as $key => $type) {
if ($type == 'K') {
$primary[] = $key;
$pkey[] = $key;
$pval[] = $this->$key;
} else {
$v = $this->$key;
if (!is_null($v)) {
$c->set($this->cacheKey($this->tableName(), $key, $v),
$this);
}
$c->set($this->cacheKey($this->tableName(), $key, $this->$key), $this);
}
}
# XXX: figure out what to do with compound pkeys
if (count($primary) == 1) {
$key = $primary[0];
$c->set($this->cacheKey($this->tableName(), $key, $this->$key),
$this);
}
# XXX: should work for both compound and scalar pkeys
$pvals = implode(',', $pval);
$pkeys = implode(',', $pkey);
$c->set($this->cacheKey($this->tableName(), $pkeys, $pvals), $this);
}
}
@ -124,21 +138,35 @@ class Memcached_DataObject extends DB_DataObject
if (!$c) {
return false;
} else {
$primary = array();
$pkey = array();
$pval = array();
$types = $this->keyTypes();
ksort($types);
foreach ($types as $key => $type) {
if ($type == 'K') {
$primary[] = $this->$key;
$pkey[] = $key;
$pval[] = $this->$key;
} else {
$c->delete($this->cacheKey($this->tableName(), $key, $this->$key));
}
}
# XXX: figure out what to do with compound pkeys
if (count($primary) == 1) {
$key = $primary[0];
$c->delete($this->cacheKey($this->tableName(), $key, $this->$key));
}
# should work for both compound and scalar pkeys
# XXX: comma works for now but may not be safe separator for future keys
$pvals = implode(',', $pval);
$pkeys = implode(',', $pkey);
$c->delete($this->cacheKey($this->tableName(), $pkeys, $pvals));
}
}
function multicache($cls, $kv) {
ksort($kv);
$c = Memcached_DataObject::memcache();
if (!$c) {
return false;
} else {
$pkeys = implode(',', array_keys($kv));
$pvals = implode(',', array_values($kv));
return $c->get(Memcached_DataObject::cacheKey($cls, $pkeys, $pvals));
}
}
}