Improvements to user/project caching.

www/project_defs.php

@@ -84,7 +84,12 @@ class Project
     # Backwards compatable lookup by pid. Will eventually flush this.
     function LookupByPid($pid) {
 	$safe_pid = addslashes($pid);
+	global $project_cache;
 
+        # Look in cache first
+	if (array_key_exists($pid, $project_cache))
+	    return $project_cache[$pid];
+	
 	$query_result =
 	    DBQueryWarn("select pid_idx from projects where pid='$safe_pid'");
 
@@ -96,8 +101,11 @@ class Project
 
 	$foo = new Project($idx); 
 
-	if ($foo->IsValid())
+	if ($foo->IsValid()) {
+            # Insert into cache.
+            $project_cache[$pid] = $foo;
 	    return $foo;
+        }
 	
 	return null;
     }

www/user_defs.php

@@ -95,15 +95,21 @@ class User
 	    return $foo;
 	}
 	# Insert into cache.
-	$user_cache["$uid_idx"] =& $foo;
+	$user_cache["$uid_idx"]  =& $foo;
+	$user_cache[$foo->uid()] =& $foo;
 	return $foo;
     }
 
     # Backwards compatable lookup by uid. Will eventually flush this.
     function LookupByUid($uid) {
+	global $user_cache;
 	$safe_uid = addslashes($uid);
 	$status_archived = TBDB_USERSTATUS_ARCHIVED;
 
+        # Look in cache first
+	if (array_key_exists("$uid", $user_cache))
+	    return $user_cache["$uid"];
+
 	$query_result =
 	    DBQueryWarn("select uid_idx from users ".
 			"where uid='$safe_uid' and ".
@@ -711,6 +717,9 @@ class User
 	if (array_key_exists("$uid_idx", $user_cache))
 	    unset($user_cache["$uid_idx"]);
 	
+	if (array_key_exists($this->uid(), $user_cache))
+	    unset($user_cache[$this->uid()]);
+	
 	return 0;
     }