Alan Runyan wrote at 2008-1-23 13:32 -0600: > ... >each record in a catalog may have an object for each index/metadata attribute >you are capturing. and possibly a few others. Each catalog entries contain >ts of object per object being indexed. That is my understanding.
It does not completely fit reality. There is no correspondence from catalogued objects to a single or even many persitent objects in the catalog. The catalog maintains a (non persistent) metadata record for each catalogued object -- a single one, for all metadata fields. These records (they are tuples) are maintained in "IOBucket"s. An "IOBucket" can have up to 60 entries. Each index maintains some information for a catalogued object -- but not in individual (object specific) objects. Instead persistent objects (such as "IITreeSet|IOBTree|OIBTree"s) are used to combine the information about many (about 40 to 120) objects. -- Dieter _______________________________________________ For more information about ZODB, see the ZODB Wiki: http://www.zope.org/Wikis/ZODB/ ZODB-Dev mailing list - ZODB-Dev@zope.org http://mail.zope.org/mailman/listinfo/zodb-dev
