Maurits van Rees wrote at 2008-3-5 23:57 +:
...
I have an item in the portal_catalog of my Plone site that has some
string as description. The real object meanwhile has had a code
change so the description field now returns unicode. When I now
recatalog that object it throws an error:
Module Products.ZCatalog.Catalog, line 359, in catalogObject
Module Products.ZCatalog.Catalog, line 318, in updateMetadata
UnicodeDecodeError: 'ascii' codec can't decode byte 0xc2 in position 159:
ordinal not in range(128)
/home/maurits/buildout/projectdeploy/parts/zope2/lib/python/Products/ZCatalog/Catalog.py(318)updateMetadata()
- if data.get(index, 0) != newDataRecord:
You must not mix unicode and str as keys in the same index.
If you do, errors as the above are very likely.
You can try the following approaches:
* if you know the encoding used by your str objects,
you can set Python's default encoding to this encoding.
Whenever unicode and str come together, the str
is converted to unicode using this encoding (which hopefully
is the correct one in all such cases).
sys.setdefaultencoding is only available at startup.
Thus, setting defaultencoding must happen in a sitecustomize
or site module.
* You completely switch to unicode for the given index
and convert the BTrees used be the index.
An index usually uses two BTrees: the so called forward index
(usually called _index)
(it maps the index terms to sets of record ids indexed under this term)
and the reverse index (usually called _unindex)
(it maps record ids to the values corresponding
to these objects).
You need to convert the keys of the forward index
and the values of the reverse index. For a FieldIndex,
the value is the index term, for a KeywordIndex it it
a sequence of index terms (all need be converted).
The forward index can be converted as follows:
self._index = OOBTree(((s.decode(your encoding), v) for (s,v) in
self._index.items()))
The reverse index uses an IOBTree and is similar to the above.
But the details depend on index type.
--
Dieter
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