From fa535ce0dccb13a92c6d8523def328c976b99b75 Mon Sep 17 00:00:00 2001
From: helmutm <helmutm@fd906abe-77d9-0310-91a1-e0d9ade77398>
Date: Thu, 6 Sep 2007 09:43:55 +0000
Subject: [PATCH] let subclasses of TrackingStorage define their own Track
 class (trackFactory)

git-svn-id: svn://svn.cy55.de/Zope3/src/cybertools/trunk@2003 fd906abe-77d9-0310-91a1-e0d9ade77398
---
 tracking/btree.py | 73 ++++++++++++++++++++++++++++-------------------
 1 file changed, 43 insertions(+), 30 deletions(-)

diff --git a/tracking/btree.py b/tracking/btree.py
index 3dc02fd..dae4a7f 100644
--- a/tracking/btree.py
+++ b/tracking/btree.py
@@ -52,10 +52,41 @@ class Run(object):
                                        str(self.finished)))
 
 
+class Track(Persistent):
+
+    implements(ITrack)
+
+    metadata_attributes = ('taskId', 'runId', 'userName', 'timeStamp')
+
+    @property
+    def metadata(self):
+        return dict((attr, getattr(self, attr)) for attr in self.metadata_attributes)
+
+    def __init__(self, taskId, runId, userName, data={}):
+        self.taskId = taskId
+        self.runId = runId
+        self.userName = userName
+        self.timeStamp = getTimeStamp()
+        self.data = data
+
+    def update(self, newData):
+        self.timeStamp = getTimeStamp()
+        data = self.data
+        data.update(newData)
+        self.data = data
+
+    def __repr__(self):
+        md = self.metadata
+        md['timeStamp'] = timeStamp2ISO(md['timeStamp'])
+        return '<Track %s: %s>' % (`[md[a] for a in self.metadata_attributes]`,
+                                     `self.data`)
+
 class TrackingStorage(BTreeContainer):
 
     implements(ITrackingStorage)
 
+    trackFactory = Track
+
     trackNum = runId = 0
     runs = None
 
@@ -119,7 +150,7 @@ class TrackingStorage(BTreeContainer):
             self.trackNum += 1
             trackNum = self.trackNum
             trackId = self.idFromNum(trackNum)
-        track = Track(taskId, runId, userName, data)
+        track = self.trackFactory(taskId, runId, userName, data)
         self[trackId] = track
         self.indexTrack(trackNum, track)
         return trackId
@@ -163,6 +194,13 @@ class TrackingStorage(BTreeContainer):
         for idx in kw:
             value = kw[idx]
             if idx in self.indexAttributes:
+                #if type(value) not in (list, tuple):
+                #    value = [value]
+                # TODO: handle a list of values, provide union of results
+                # resultx = None
+                # for v in value:
+                #     result = self.union(result, self.indexes[idx].apply((v, v)))
+                # result = self.intersect(result, resultx)
                 result = self.intersect(result, self.indexes[idx].apply((value, value)))
             elif idx == 'timeFrom':
                 result = self.intersect(result,
@@ -170,6 +208,10 @@ class TrackingStorage(BTreeContainer):
             elif idx == 'timeTo':
                 result = self.intersect(result,
                                         self.indexes['timeStamp'].apply((None, value)))
+            elif idx == 'timeFromTo':  # expects a tuple (from, to)
+                start, end = value
+                result = self.intersect(result,
+                                        self.indexes['timeStamp'].apply((start, end)))
         return result and [self[self.idFromNum(r)] for r in result] or set()
 
     def intersect(self, r1, r2):
@@ -182,35 +224,6 @@ class TrackingStorage(BTreeContainer):
         return self.taskUsers.keys()
 
 
-class Track(Persistent):
-
-    implements(ITrack)
-
-    metadata_attributes = ('taskId', 'runId', 'userName', 'timeStamp')
-
-    @property
-    def metadata(self):
-        return dict((attr, getattr(self, attr)) for attr in self.metadata_attributes)
-
-    def __init__(self, taskId, runId, userName, data={}):
-        self.taskId = taskId
-        self.runId = runId
-        self.userName = userName
-        self.timeStamp = getTimeStamp()
-        self.data = data
-
-    def update(self, newData):
-        self.timeStamp = getTimeStamp()
-        data = self.data
-        data.update(newData)
-        self.data = data
-
-    def __repr__(self):
-        md = self.metadata
-        md['timeStamp'] = timeStamp2ISO(md['timeStamp'])
-        return '<Track %s: %s>' % (`[md[a] for a in self.metadata_attributes]`,
-                                     `self.data`)
-
 def timeStamp2ISO(ts):
     return time.strftime('%Y-%m-%d %H:%M', time.gmtime(ts))