[Zope-Checkins] CVS: ZODB3/ZODB/zodb4 - conversion.py:1.1.2.3

[Fred L. Drake, Jr.]

Update of /cvs-repository/ZODB3/ZODB/zodb4
In directory cvs.zope.org:/tmp/cvs-serv25129

Modified Files:
      Tag: zope3-zodb3-devel-branch
	conversion.py 
Log Message:
use a proxy object for each transaction to present the ZODB3 view on
the transaction; this will be responsible for the data record format
conversion as well


=== ZODB3/ZODB/zodb4/conversion.py 1.1.2.2 => 1.1.2.3 ===
--- ZODB3/ZODB/zodb4/conversion.py:1.1.2.2	Thu Jan 29 16:31:42 2004
+++ ZODB3/ZODB/zodb4/conversion.py	Fri Jan 30 12:32:13 2004
@@ -37,3 +37,33 @@
 
     def iterator(self):
         return self
+
+    def __iter__(self):
+        baseiter = z4iterator.FileIterator.__iter__(self)
+        for txn in baseiter:
+            yield DataRecordConvertingTxn(txn)
+
+
+class DataRecordConvertingTxn(object):
+
+    def __init__(self, txn):
+        self._txn = txn
+        self.user = str8(txn.user)
+        self.description = str8(txn.description)
+
+    def __getattr__(self, name):
+        return getattr(self._txn, name)
+
+    def __iter__(self):
+        for record in iter(self._txn):
+            record.tid = record.serial
+            yield record
+
+
+def str8(s):
+    # convert unicode strings to 8-bit strings
+    if isinstance(s, unicode):
+        # Should we use UTF-8 or ASCII?  Not sure.
+        return s.encode("ascii")
+    else:
+        return s