Re: [bdbxml] XmlManager.openContainer

Andrew,

It's odd that the open would succeed, but the query fail,
unless something else is going on.

Are you changing directories between the openContainer()
call and the query that uses collection('rssfeeds.dbxml') ?

One thing to try that eliminates paths in container names
in queries is the XmlContainer::addAlias() call.  E.g.:
     container = manager.openContainer("rssfeeds.dbxml")
     container.addAlias("feeds")

Then you can do things like this:
     ...
     results = manager.query("collection('feeds')/xml", qc)

George


> hi,
>    I'm having trouble opening a container separately from creating  
> it.  I'm working in the python port of BDB XML on a UNIX  
> machine...I'll just paste the code where the container is created  
> originally:
>
> def StoreFeeds(feedDocs,feedNames):
>
>    manager = XmlManager()
>    updateContext = manager.createUpdateContext()
>    container = manager.openContainer("rssfeeds.dbxml",DB_CREATE)
>      for n in range(0,len(feedDocs)):
>        feedString = feedDocs[n].toxml("utf-8")
>        feedName = feedNames[n]
>        clockTime = str(clock())
>        feedID = feedName + " " + clockTime
>          container.putDocument(feedID,feedString,updateContext)
>    #End for
> #End StoreFeeds
>
> That works fine.  The file is created as I expect.  In another  
> program I want to use to query the DB, I use this code:
>
> manager = XmlManager()
> uc = manager.createUpdateContext()
>
> container = manager.openContainer("rssfeeds.dbxml")
> qc = manager.createQueryContext()
> results = manager.query("collection('rssfeeds.dbxml')/xml",qc)
> results.reset()
>
> for value in results:
>    document = value.asDocument()
>    print document.getName(), "=", value.asString()
> #End while
>
> This code doesn't work.  On running I get a Runtime Error as follows:
>
> -bash-3.00$ python RSSretrieve.py
> Traceback (most recent call last):
>  File "RSSretrieve.py", line 27, in ?
>    results = manager.query("collection('rssfeeds.dbxml')/link",qc)
>  File "/home/afister/lib/python/dbxml.py", line 124, in query
>    def query(*args): return _dbxml.XmlManager_query(*args)
> RuntimeError: Error: Cannot query in container  
> dbxml:rssfeeds.dbxml.  Container not open and auto-open is not enabled
>
> Any help would be appreciated :-)
>
> -Andrew



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