X-Git-Url: http://dolda2000.com/gitweb/?p=didex.git;a=blobdiff_plain;f=didex%2Fvalues.py;h=ecb78dd26d1cd70ce5f1380279e7ab2d7613743e;hp=8479d4214086f63539315f05206d0ebd820d0400;hb=a19ad473ae0a534f454dadacb01d8252ab51c21f;hpb=fed04312788aef5e52e5549fe5325988d2bb56eb

diff --git a/didex/values.py b/didex/values.py
index 8479d42..ecb78dd 100644
--- a/didex/values.py
+++ b/didex/values.py
@@ -40,6 +40,27 @@ class base(storedesc):
     def get(self, **kwargs):
         return cursor(self.index().get(**kwargs), self.store)
 
+    def get1(self, *, check=False, default=KeyError, **kwargs):
+        with self.get(**kwargs) as cursor:
+            try:
+                k, v = next(cursor)
+            except StopIteration:
+                if default is not KeyError:
+                    return default
+                raise KeyError("no matches in " + self.name, kwargs)
+            if check:
+                try:
+                    next(cursor)
+                except StopIteration:
+                    pass
+                else:
+                    raise ValueError("unexpected multiple matchies in " + self.name, kwargs)
+            return v
+
+    def list(self, **kwargs):
+        with self.get(**kwargs) as cursor:
+            return [v for k, v in cursor]
+
 class descbase(base):
     def __init__(self, store, indextype, name, datatype, default):
         super().__init__(store, indextype, name, datatype)
@@ -113,6 +134,17 @@ class compound(base):
         self.parts = parts
         self.iattr = "__idx_%s_cur" % name
 
+    def minim(self, *parts):
+        return self.typ.minim(*parts)
+    def maxim(self, *parts):
+        return self.typ.maxim(*parts)
+
+    def get(self, *, partial=None, **spec):
+        if partial is not None:
+            return super().get(ge=self.minim(*partial), le = self.maxim(*partial), **spec)
+        else:
+            return super().get(**spec)
+
     def register(self, id, obj, tx):
         val = tuple(part.__get__(obj, None) for part in self.parts)
         self.index().put(val, id, tx=tx)