1 files changed, 22 insertions, 0 deletions
diff --git a/paste/webkit/FakeWebware/MiscUtils/ParamFactory.py b/paste/webkit/FakeWebware/MiscUtils/ParamFactory.py
new file mode 100644
index 0000000..4b3f2f3
--- /dev/null
+++ b/paste/webkit/FakeWebware/MiscUtils/ParamFactory.py
@@ -0,0 +1,22 @@
+from threading import Lock
+
+class ParamFactory:
+    def __init__(self, klass, **extraMethods):
+        self.lock = Lock()
+        self.cache = {}
+        self.klass = klass
+        for name, func in extraMethods.items():
+            setattr(self, name, func)
+    def __call__(self, *args):
+        self.lock.acquire()
+        if not self.cache.has_key(args):
+            value = self.klass(*args)
+            self.cache[args] = value
+            self.lock.release()
+            return value
+        else:
+            self.lock.release()
+            return self.cache[args]
+    def allInstances(self):
+        return self.cache.values()
+